Hunan aluminum alloy bar-how much

Hunan aluminum alloy bar-how much is it, the difference is that 63 aluminum plate has silicon and Si in addition to magnesium and Mg.Slightly better than 52 in strength.The same point is the aluminum alloy with magnesium Mg as the main alloying element.Now the 52 aluminum plates and 63 aluminum plates on the market are very popular and widely used. So, what is the difference between 52 aluminum plates and 63 aluminum platesThe technician will help you.

Supply of overcapacity in large areas of aluminum plate material-supply of aluminum plate material, ceramic aluminum plate, punched aluminum plate, aluminum ceiling, mesh, aluminum plate, carved aluminum plate, shaped tile, aluminum plate, and other large areas of overcapacity. "From 100 million tons to 800 million tons now, Still talking about overcapacity," the deputy secretary-general of China Iron and Steel Association said in an interview with "China".Recently, the China Iron and Steel Association announced that China's steel production capacity had reached 800 million tons at that time, but in practice, the compliant steel production capacity was only 400 million tons, and 400 million tons of production capacity had not been approved by the state..Demand status edit annealing temperature is 345.Elastic modulus (E) 63-70.7Gpa condition yield strength 0.2(MPa65 Tensile strength 170 3MPa Aluminum Al allowance; Silicon Si0.25; Copper Cu0.10; Magnesium Mg 2 8; Zinc Zn0.10; Manganese Mn0.10; chromium Cr0.15-0.35; Iron Fe0.40.Chemical composition and performance.

This mirror surface is produced by mechanical polishing, and there is no electroplated coating on the surface. Before the sandblasting anode processing, there is no need to remove the anode or electroplating film. It can be directly sandblasted and anode processed. The sandblasted rough grain size can reach 240# or more without pretreatment , Can be directly printed, stamped and processed, with high reflectivity.The mirror surface features pure material, suitable for high-demand and stable anodized surface treatment, such as chemical polishing, atomization, chemical sanding, electro-polishing, dyeing and sealing.Surface treatment.

In order to solve the thermal stress and deformation of the aluminum plate surface, some enterprise production equipment manufacturers, especially when using aluminum-plastic composite panels through panel data, safely add a circle of side ribs to the periphery of the unit teaching plate. From the production technology process, it is The panel is grooved and folded into a box shape on the groover according to the hemming size of the plate.The other line is to cut and assemble the side rib profile into a side rib frame according to the development of the plate..

Fan Shunke, vice chairman of the Party Committee of China Nonferrous Metals Industry Association, pointed out at the 8th Guangdong Aluminum Processing Technology (International) Seminar that in recent years, with the joint efforts of the entire industry, China's aluminum processing industry has achieved World-renowned achievements, production and consumption have ranked in the world for 11 consecutive years. In 2016, the output of aluminum processing materials reached 35.2 million tons. From the perspective of industrial scale, industrial standard, quality, technology and equipment, China is already a veritable aluminum processing power, and to a certain extent Shanghai has become a powerful country.In the future, my country's aluminum processing industry should focus on increasing investment in research and development and improving independent innovation capabilities. At the same time, environmental protection and recycling are still important development directions for the industry.Independent innovation and green environmental protection are still important development directions of China's aluminum processing industry.tungsten carbide.

But the actual consumption in the past reached 700 million tons.The China Iron and Steel Association estimates that the consumption of crude steel will reach 800 million tons, while the steel capacity agreed by the state at that time is only 400 million tons. There are still 400 million tons of illegal capacity in the market that will compensate for the demand gap..In fact, in the past 10 years of micro-control of the aluminum plate data, China's steel, cement, non-ferrous metals and other industries have been continuously defined as "overcapacity" industries, and have been applied to relatively serious construction sites, such as the approval of fiscal and taxation projects. policy.

3A21 aluminum plate.Aircraft fuel tank oil pipe rivet wire, etc.; construction materials and food and other industrial equipment, etc. 31 aluminum plates.Room partition baffle, movable house slab gutter and downpipe, thin plate forming processing parts, bottle caps and corks, etc. 30 aluminum plates.The body of all-aluminum cans requires higher strength parts than 3003 alloy. Chemical products are producedTungsten WeightProduction and storage equipment, sheet processing parts, construction processing parts, construction tools, various lamps and lanterns.

Inferior aluminum alloy profiles will greatly reduce the sealing time, and at the same time reduce the loss of chemical reagents and cost, but the corrosion resistance of the profiles will also be greatly reduced..Unqualified chemical composition, the cost of aluminum alloy profiles doped with a large amount of miscellaneous aluminum and scrap aluminum in the product will be greatly reduced, but it will cause the chemical composition of the architectural aluminum alloy profiles to be unqualified, and severely endanger Construction safety.

Most of the industrial aluminum alloys are developed according to the existing needs of users. Some industries have strong development capabilities, such as rail vehicle manufacturing and automobile manufacturing, but some small industries lack their own development capabilities, or have not realized that they can be replaced by industrial aluminum alloys. Current materials require manufacturers to assist users in developing alternative industrial aluminum alloys. To do this, they need to go out and conduct detailed investigations of materials used in various industries to find out which ones are suitable to be replaced by aluminum alloys. Materials used, through these developments, can expand the market for industrial aluminum alloy demand, especially the development of large-scale industries.rock drill bits Increasing market demand can alleviate the fierce competition faced by the large and extra-large extrusion lines under construction after completion.Improve the overall production technology of industrial aluminum alloy.Most of the industrial aluminum types have strict requirements on material performance, size tolerances, etc. Although the profit of industrial aluminum alloys is higher than that of architectural aluminum alloys, its production is also relatively difficult and the technical requirements are higher, especially for complex flats. The production technology of large-scale industrial aluminum alloys with wide and thin walls is still far behind foreign countries..Further efforts are needed to improve the technical level. Only when the overall technical level is improved, can my country's industrial aluminum alloy be in a favorable position in international competition and create conditions for opening up foreign markets and participating in international competition..With the continuous development of the industrial aluminum alloy industry, more and more enterprises have applied to the industrial aluminum alloy industry. Among them, the rapid development of a number of enterprises has attracted wide attention. For example, the industrial aluminum alloy enterprises in Tianjin and Shanghai are domestic production. Key areas of industrial aluminum alloy.Equipped with mold design and development of aluminum extrusion production industrial frame and assembly line conveyor line equipment development and installation of aluminum products deep processing and other non-standard industrial aluminum alloy products.After years of development, we have a complete aluminum alloy structure installation accessories.The design of various accessories is reasonable, which can greatly improve the assembly efficiency of the aluminum alloy frame and reduce the cost of customers. Various precision machining equipment can provide a one-stop service area for the design, processing and assembly of aluminum alloy structural frames..In recent years, China's aluminum processing industry has closely combined with the needs of the market and scientific development, so that traditional aluminum processing materials have gradually completed the transformation to modern aluminum processing materials. Therefore, China's aluminum processing materials have undergone tremendous changes..The important feature of China's aluminum processing materials is the development of high performance, high precision, energy saving and environmental protection. Many products have become well-known brands at home and abroad, and enjoy a high reputation in the domestic and foreign markets; product quality has been steadily improved, and product standards have been in the international ranks. In addition to producing according to standards, aluminum manufacturers can directly accept orders according to some key standards.This shows that the production of aluminum processing materials in my country has been further internationalized, and in order to meet the various needs of the national economy and science and technology for high-precision aluminum materials, major aluminum processing companies have also formulated many internal supply technology standards. The status of industrial aluminum alloys What?

Hunan aluminum alloy bar-how much

Hunan aluminum alloy bar-how much is it, the difference is that 63 aluminum plate has silicon and Si in addition to magnesium and Mg.Slightly better than 52 in strength.The same point is the aluminum alloy with magnesium Mg as the main alloying element.Now the 52 aluminum plates and 63 aluminum plates on the market are very popular and widely used. So, what is the difference between 52 aluminum plates and 63 aluminum platesThe technician will help you.



Supply of overcapacity in large areas of aluminum plate material-supply of aluminum plate material, ceramic aluminum plate, punched aluminum plate, aluminum ceiling, mesh, aluminum plate, carved aluminum plate, shaped tile, aluminum plate, and other large areas of overcapacity. "From 100 million tons to 800 million tons now, Still talking about overcapacity," the deputy secretary-general of China Iron and Steel Association said in an interview with "China".Recently, the China Iron and Steel Association announced that China's steel production capacity had reached 800 million tons at that time, but in practice, the compliant steel production capacity was only 400 million tons, and 400 million tons of production capacity had not been approved by the state..Demand status edit annealing temperature is 345.Elastic modulus (E) 63-70.7Gpa condition yield strength 0.2(MPa65 Tensile strength 170 3MPa Aluminum Al allowance; Silicon Si0.25; Copper Cu0.10; Magnesium Mg 2 8; Zinc Zn0.10; Manganese Mn0.10; chromium Cr0.15-0.35; Iron Fe0.40.Chemical composition and performance.

This mirror surface is produced by mechanical polishing, and there is no electroplated coating on the surface. Before the sandblasting anode processing, there is no need to remove the anode or electroplating film. It can be directly sandblasted and anode processed. The sandblasted rough grain size can reach 240# or more without pretreatment , Can be directly printed, stamped and processed, with high reflectivity.The mirror surface features pure material, suitable for high-demand and stable anodized surface treatment, such as chemical polishing, atomization, chemical sanding, electro-polishing, dyeing and sealing.Surface treatment.


In order to solve the thermal stress and deformation of the aluminum plate surface, some enterprise production equipment manufacturers, especially when using aluminum-plastic composite panels through panel data, safely add a circle of side ribs to the periphery of the unit teaching plate. From the production technology process, it is The panel is grooved and folded into a box shape on the groover according to the hemming size of the plate.The other line is to cut and assemble the side rib profile into a side rib frame according to the development of the plate..


Fan Shunke, vice chairman of the Party Committee of China Nonferrous Metals Industry Association, pointed out at the 8th Guangdong Aluminum Processing Technology (International) Seminar that in recent years, with the joint efforts of the entire industry, China's aluminum processing industry has achieved World-renowned achievements, production and consumption have ranked in the world for 11 consecutive years. In 2016, the output of aluminum processing materials reached 35.2 million tons. From the perspective of industrial scale, industrial standard, quality, technology and equipment, China is already a veritable aluminum processing power, and to a certain extent Shanghai has become a powerful country.In the future, my country's aluminum processing industry should focus on increasing investment in research and development and improving independent innovation capabilities. At the same time, environmental protection and recycling are still important development directions for the industry.Independent innovation and green environmental protection are still important development directions of China's aluminum processing industry.tungsten carbide.

But the actual consumption in the past reached 700 million tons.The China Iron and Steel Association estimates that the consumption of crude steel will reach 800 million tons, while the steel capacity agreed by the state at that time is only 400 million tons. There are still 400 million tons of illegal capacity in the market that will compensate for the demand gap..In fact, in the past 10 years of micro-control of the aluminum plate data, China's steel, cement, non-ferrous metals and other industries have been continuously defined as "overcapacity" industries, and have been applied to relatively serious construction sites, such as the approval of fiscal and taxation projects. policy.


3A21 aluminum plate.Aircraft fuel tank oil pipe rivet wire, etc.; construction materials and food and other industrial equipment, etc. 31 aluminum plates.Room partition baffle, movable house slab gutter and downpipe, thin plate forming processing parts, bottle caps and corks, etc. 30 aluminum plates.The body of all-aluminum cans requires higher strength parts than 3003 alloy. Chemical products are producedTungsten WeightProduction and storage equipment, sheet processing parts, construction processing parts, construction tools, various lamps and lanterns.

Inferior aluminum alloy profiles will greatly reduce the sealing time, and at the same time reduce the loss of chemical reagents and cost, but the corrosion resistance of the profiles will also be greatly reduced..Unqualified chemical composition, the cost of aluminum alloy profiles doped with a large amount of miscellaneous aluminum and scrap aluminum in the product will be greatly reduced, but it will cause the chemical composition of the architectural aluminum alloy profiles to be unqualified, and severely endanger Construction safety.


Most of the industrial aluminum alloys are developed according to the existing needs of users. Some industries have strong development capabilities, such as rail vehicle manufacturing and automobile manufacturing, but some small industries lack their own development capabilities, or have not realized that they can be replaced by industrial aluminum alloys. Current materials require manufacturers to assist users in developing alternative industrial aluminum alloys. To do this, they need to go out and conduct detailed investigations of materials used in various industries to find out which ones are suitable to be replaced by aluminum alloys. Materials used, through these developments, can expand the market for industrial aluminum alloy demand, especially the development of large-scale industries. Increasing market demand can alleviate the fierce competition faced by the large and extra-large extrusion lines under construction after completion.Improve the overall production technology of industrial aluminum alloy.Most of the industrial aluminum types have strict requirements on material performance, size tolerances, etc. Although the profit of industrial aluminum alloys is higher than that of architectural aluminum alloys, its production is also relatively difficult and the technical requirements are higher, especially for complex flats. The production technology of large-scale industrial aluminum alloys with wide and thin walls is still far behind foreign countries..Further efforts are needed to improve the technical level. Only when the overall technical level is improved, can my country's industrial aluminum alloy be in a favorable position in international competition and create conditions for opening up foreign markets and participating in international competition..With the continuous development of the industrial aluminum alloy industry, more and more enterprises have applied to the industrial aluminum alloy industry. Among them, the rapid development of a number of enterprises has attracted wide attention. For example, the industrial aluminum alloy enterprises in Tianjin and Shanghai are domestic production. Key areas of industrial aluminum alloy.Equipped with mold design and development of aluminum extrusion production industrial frame and assembly line conveyor line equipment development and installation of aluminum products deep processing and other non-standard industrial aluminum alloy products.After years of development, we have a complete aluminum alloy structure installation accessories.The design of various accessories is reasonable, which can greatly improve the assembly efficiency of the aluminum alloy frame and reduce the cost of customers. Various precision machining equipment can provide a one-stop service area for the design, processing and assembly of aluminum alloy structural frames..In recent years, China's aluminum processing industry has closely combined with the needs of the market and scientific development, so that traditional aluminum processing materials have gradually completed the transformation to modern aluminum processing materials. Therefore, China's aluminum processing materials have undergone tremendous changes..The important feature of China's aluminum processing materials is the development of high performance, high precision, energy saving and environmental protection. Many products have become well-known brands at home and abroad, and enjoy a high reputation in the domestic and foreign markets; product quality has been steadily improved, and product standards have been in the international ranks. In addition to producing according to standards, aluminum manufacturers can directly accept orders according to some key standards.This shows that the production of aluminum processing materials in my country has been further internationalized, and in order to meet the various needs of the national economy and science and technology for high-precision aluminum materials, major aluminum processing companies have also formulated many internal supply technology standards. The status of industrial aluminum alloys What?

Where can Jiangsu professional aluminum alloy bars have full service

Where can Jiangsu professional aluminum alloy bars have a full range of services? The anti-collision beams generally use steel plates and steel rolling parts.But now the anti-collision beam also uses automotive aluminum, because aluminum alloy has good energy absorption effect, it has been widely used in the bumper anti-collision beam assembly of joint venture brand models..However, domestic self-owned brand models are limited to cost and other reasons, and are less used.Jinyu Aluminum has done related research on aluminum alloy anti-collision beam assembly. The research shows that the weight of aluminum anti-collision beam is reduced by 25% compared with the original steel anti-collision beam, which has higher bending strength and low-speed crash test. Under the conditions, the energy absorption effect of aluminum alloy front anti-collision beam is 45% higher than that of steel parts system.

In 1915, Alcoa invented the 2017 alloy and in 1933 invented the 2024 alloy, which enabled the rapid expansion of the application of aluminum in aircraft.In 1933, Alcoa invented 61 alloy, and then created the extruder quenching process, which significantly expanded the application range of extruded profiles.In 19, Alcoa invented the electrical aluminum alloy 10 and made it into a steel core aluminum stranded wire, creating a pioneer in high-voltage remote power transmission.

Aluminum alloy is the aluminum material with different cross-sectional shapes through hot melt extrusion of aluminum rods.Its frame characteristics have the following 4 characteristics of industrial aluminum alloy frames. 16 After the wire drawing work piece undergoes alkali etching, it is possible to have a negative and positive surface (that is, when the work piece is illuminated at a certain angle, the surface has different shades of mottling). This is mainly caused by the material. The use of alkaline etching or acid etching before drawing can reduce or prevent this kind of phenomenon..

Hoof and casters as shown in the figure. Other accessories Industrial aluminum alloy. Other accessories include hinge end cover, movable hook, flat seal groove strip, U-shaped groove strip handle and lifting eyes, etc..Hinge is used for active connection between profile and profile or profile and plate.The end cover is installed on the end face of the profile, which is both beautiful and safe.The movable hook can be inserted into the groove of the profile to slide back and forth.



5182 thin plate for easy processingtungsten carbide rods Pull can cover, car body panel control panel reinforcement bracket and other components 5154 welded structure storage tank pressure vessel ship structure and offshore facility transportation tank 56 used in occasions that require high corrosion resistance, good weldability and medium strength , Such as ships, automobiles, airplanes, cryogenic equipment, television tower, drilling equipment, transportation equipment parts and decks.

Most of the industrial aluminum alloys are developed according to the existing needs of users. Some industries have strong development capabilities, such as rail vehicle manufacturing and automobile manufacturing, but some small industries lack their own development capabilities, or have not realized that they can be replaced by industrial aluminum alloys. Current materials require manufacturers to assist users in developing alternative industrial aluminum alloys. To do this, they need to go out and conduct detailed investigations of materials used in various industries to find out which ones are suitable to be replaced by aluminum alloys. Materials used, through these developments, can expand the market for industrial aluminum alloy demand, especially the development of large-scale industries. Increasing market demand can alleviate the fierce competition faced by the large and extra-large extrusion lines under construction after completion.Improve the overall production technology of industrial aluminum alloy.Most of the industrial aluminum types have strict requirements on material performance, size tolerances, etc. Although the profit of industrial aluminum alloys is higher than that of architectural aluminum alloys, its production is also relatively difficult and the technical requirements are higher, especially for complex flats. The production technology of large-scale industrial aluminum alloys with wide and thin walls is still far behind foreign countries..Further efforts are needed to improve the technical level. Only when the overall technical level is improved, can my country's industrial aluminum alloy be in a favorable position in international competition and create conditions for opening up foreign markets and participating in international competition..With the continuous development of the industrial aluminum alloy industry, more and more enterprises have applied to the industrial aluminum alloy industry. Among them, the rapid development of a number of enterprises has attracted wide attention. For example, the industrial aluminum alloy enterprises in Tianjin and Shanghai are domestic professionals. Key areas for the production of industrial aluminum alloys.Equipped with mold design and development of aluminum extrusion production industrial frame and assembly line conveyor line equipment development and installation of aluminum products deep processing and other non-standard industrial aluminum alloy products.After years of development, we have a complete aluminum alloy structure installation accessories.The design of various accessories is reasonable, which can greatly improve the assembly efficiency of the aluminum alloy frame and reduce the cost of customers. Various precision machining equipment can provide a one-stop service area for the design, processing and assembly of aluminum alloy structural frames..In recent years, China's aluminum processing industry has closely combined with the needs of the market and scientific development, so that traditional aluminum processing materials have gradually completed the transformation to modern aluminum processing materials. Therefore, China's aluminum processing materials have undergone tremendous changes..The important feature of China's aluminum processing materials is the development of high performance, high precision, energy saving and environmental protection. Many products have become well-known brands at home and abroad, and enjoy a high reputation in the domestic and foreign markets; product quality has been steadily improved, and product standards have been in the international ranks. In addition to producing according to standards, aluminum manufacturers can directly accept orders according to some key standards.This shows that the production of aluminum processing materials in my country has been further internationalized, and in order to meet the various needs of the national economy and science and technology for high-precision aluminum materials, major aluminum processing companies have also formulated many internal supply technology standards. The status of industrial aluminum alloys What?1.

In 1915, Alcoa invented the 2017 alloy and in 1933 invented the 2024 alloy, which enabled the rapid expansion of the application of aluminum in aircraft.In 1933, Alcoa invented 61 alloy, and then created the extruder quenching process, which significantly expanded the application range of extruded profiles.In 19, Alcoa invented the electrical aluminum alloy 10 and made it into a steel core aluminum stranded wire, creating a pioneer in high-voltage remote power transmission.

Where can Jiangsu professional aluminum alloy bars provide full service? In 1915, Alcoa invented 2017 alloy and in 1933 invented 2024 alloy, which enabled the rapid expansion of aluminum applications in aircraft.In 1933, Alcoa invented 61 alloy, and then created the extruder quenching process, which significantly expanded the application range of extruded profiles.In 19, Alcoa invented the electrical aluminum alloy 10 and made it into a steel core aluminum stranded wire, creating a pioneer in high-voltage remote power transmission.

Well-known manufacturer of Taiwan hard alloy bars and gaskets

HAO Carbide Co., Ltd is a production enterprise integrating R&D, production and sales of cemented carbide.HAO Carbide Co., Ltd has a group of experienced professional technical and management talents, and is dedicated to providing customers with high-quality cemented carbide products and non-magnetic products.

HAO Carbide Co., Ltd adopts advanced production technology and has domestic leading manufacturing equipment, with stable and reliable product quality.

Taiwan hard alloy bar


The cutting speed and cutting depth are reduced, but the width of the cut seam of the tungsten steel plate is increased, that is, the amount of material damage per unit time is increased.Under the same pressure condition, the diameter of comparison is 0.1mm and 0.The cutting quality of the material processed by the 4mm nozzle is stillTungsten WeightIt is found that as the nozzle diameter increases, the slit becomes wider, the chip size becomes larger, and the slit quality (roughness) also significantly deteriorates.In order to better reduce costs, engineers and manufacturers continue to explore, and now Anhui impact resistant waterjet can effectively reduce costs to create greater profits.

The requirement is to work under high pressure conditions, but inlay ceramics or high alloys.The nozzle for cleaning the net cage cloth is generally a fan nozzle or a self-cleaning nozzle.2. Electronics.The large space of the large electronic factory is to be humidified and cooled, and the spray nozzle is used..The cleaning carbide bushing of electronic board has fan-shaped and wide-angle.The rosin nozzle after the circuit board is formed is to protect the circuit board very well, and the nozzle of Saigang can also be used..3. Thermal power plant.Large-flow nozzles such as silicon carbide nozzles and spiral nozzles are used for desulfurization and dust removal.

For customers' personalized orders, there are corresponding engineers to formulate more suitable product plans for you, so as to be considerate and professional..HAO Carbide Co., Ltd adheres to the concept of "Being dedication to work and treating others sincerely", and sincerely look forward to working with you for a win-win.

Well-known gasket manufacturers


But if the power is too small, it will cause the workpiece to be oxidized, so we must pay attention to the use of power when using this method for welding.When the fighter plane reaches the sky above the target, it launches quickly.The modern hard alloy cold heading die is different from before. It used to put a heavy fire. For example, the Tomahawk bullet can carry 450 kg of TN and high explosive..Modern fighters can't carry much. It has changed a new concept of striking the target. Instead of using the traditional one, it puts a metal rod made of metal tungsten. This is the tungsten rod..

2. Flip type.The clamp has a supporting surface in the price direction. During processing, you can flip it by hand to each need to be drilled with confidence.This style of cemented carbide bushing is suitable for drilling small workpieces, not suitable for large or large-scale workpieces.If you want to drill, you need to consider which style to choose.3. Cover type.Free drilling template without clamping concrete. When using, install the drilling template directly on the positioning reference surface of the workpiece, which is suitable for drilling small holes on larger workpieces..

We firmly believe that cooperating with "HAO Carbide Co., Ltd " is your no regrets choice.The company insists on creating high-quality cemented carbide products with high-precision talents and high-precision technical equipment, and is determined to establish my country's cemented carbide national brand and make Zhuzhou manufacturing famous all over the world.

The company insists on innovation and development, develops new products with new technology and high rate, especially in the field of non-standard, special-shaped and cemented carbide materials, and establishes an influence, with strong supply capacity, fast delivery guarantee, and stable product quality. Global customer demand

Taiwan hard alloy bar

The grille should be replaced according to the actual cutting accuracy requirements. A grille that is too badly damaged will easily affect the cutting accuracy..Moving and flipping the workbench grid can extend its service life and reduce usage costs.Tungsten steel plate manufacturers summarize the daily problems encountered in waterjet cutting, which is also a good habit of using equipment, and can further reduce the cost of use.3Does waterjet cutting require fixtures?From a mechanical point of view, the material only bears the force in the vertical direction during the waterjet cutting process, and the force in the horizontal direction is very small..

If the damage is caused by the tissue stress, then the external environment and conditions of the processing equipment should be controlled first to reduce the possibility of damage; if it is caused by the mechanical stress, the use of the material itself should be considered As well as the possible external processing environment, etc., these are all good things to pay attention to.In order to prevent the roll from breaking, attention should be paid to reducing residual stress, organizational force and thermal stress during processing and use, and different planning considerations should be made in consideration of the needs of different processing environments..This is the matter to be considered when using cemented carbide bushings. You can also have a basic consideration when using it to see if it can meet your actual processing needs and reduce the possibility of fracture..

Method and process for eliminating shrinkage and porosity of vacuum smelting master alloy bars

The invention belongs to the technical field of smelting, and specifically relates to a method for eliminating shrinkage and porosity of a vacuum smelting master alloy bar.

Background technique:
During the casting and solidification of the master alloy, when the molten metal is poured into the ingot mold, since the temperature of the ingot mold where the master alloy is poured is significantly lower than the temperature of the molten metal, the temperature of the molten metal is quickly transferred to the ingot mold, which is close to the inner surface of the master alloy steel ingot mold. The molten metal solidifies rapidly, and the way the ingot solidifies is from the outside to the inside.The volume of the alloy shrinks during the solidification process, and shrinkage and porosity often appear at the last solidified part (center) of the master alloy.

When the master alloy is solidified, there is no continuous replenishment of molten metal above, and an open shrinkage cavity is formed in the head of the master alloy, which is a primary shrinkage cavity.The primary shrinkage cavity is usually through the use of an insulation riser to heat the solidified molten steel on the head to reduce the depth of the shrinkage cavity. After the ingot is cooled, the cap mouth is removed, which does not affect the internal quality of the alloy, but reduces the alloy yield rate. In the middle, the holes formed by the shrinkage of the final solidified part cannot be supplemented by the surrounding molten metal. A closed shrinkage cavity is formed inside the master alloy ingot, which is a secondary shrinkage cavity..Conventional casting method cannot eliminate secondary shrinkage.After the vacuum smelting master alloy is poured, there are often two problems in the ingot: one is that the primary shrinkage cavity is located at the uppermost end of the master alloy ingot and the shrinkage cavity is deep, and sometimes the depth of the shrinkage cavity even reaches 1/3 of the height of the master alloy. 1/2.The second is that the secondary shrinkage cavity exists inside the alloy ingot, which is continuous or discontinuous and cannot be removed.

Technical realization elements:
In view of the above-mentioned problems and deficiencies in the prior art, the present invention provides a method for eliminating shrinkage and porosity in vacuum smelting master alloy bars.

In order to achieve the above objectives, the present invention provides the following technical solutions:

A method for eliminating shrinkage and porosity in vacuum smelting master alloy bars. The method is carried out according to the following steps:

Step 1: Prepare the alloy raw materials according to the calculated batching list and load them into the melting crucible;

Step 2: Melt Tungsten Carbide Rods Crucible smelting for baking process and furnace washing process, the furnace washing process uses pure nickel or the same steel return material to wash the furnace;

Step 3: Baking and degassing the alloy raw materials;

Step 4: Bake the funnel brick and the shunt brick for 2 hours at 400C respectively;

Step 5: Use an annular heating furnace to heat the mold in the ingot chamber of the vacuum induction furnace;

Step 6: Smelt the alloy raw materials in the melting crucible under the condition of vacuum degree <4Pa to obtain alloy liquid;

Step 7: Pour the alloy liquid in step 6 into the mold;

Step 8: The mold is cooled and released. After the alloy liquid in the mold is fully solidified, the mold is demolded.

Further, in step 1, the melting crucible used is a magnesia or aluminum molding crucible.

Further, in step 5, the heating temperature of the casting mold is 600-650C.

Furthermore, in step 6, the process of smelting the alloy is divided into a melting period, a refining period and an alloying period. The melting period is to start with low power transmission, then gradually increase the power, increase the temperature in stages, and finally send the high power to the point The alloy raw materials are melted; the refining period is when the molten pool liquid level should remain calm, not bubbling, and the liquid level shall not turn over after the alloy raw materials are melted; the alloying period is when other required alloy elements are added to the alloy raw materials to be melted. Stir the molten pool to homogenize the alloy composition in the molten pool.

Further, in step 7, the superheating temperature of the alloy liquid is 100C-120C.

Further, in step 8, the cooling time of the mold is 10-15 minutes.

Compared with the prior art, the beneficial effects of the present invention are:

The invention is in vacuum inductionTungsten WeightThe ring heating furnace is used in the furnace to heat the mold. Because the mold is heated, when the alloy liquid is poured into the mold, the cooling and solidification rate of the alloy liquid in the mold is reduced, the fluidity of the molten metal is increased, and the surface of the ingot is smooth. The interior solidifies uniformly. During the solidification process, the casting speed is controlled according to the working conditions, so that the alloy liquid inside the mold solidifies from bottom to top, and the upper unsolidified alloy liquid supplements the lower solidification shrinkage, so that the solidified part of the master alloy is fully supplemented by the surrounding alloy liquid , The internal structure of the produced master alloy is dense, without holes, shrinkage and looseness.

Description of the drawings

Figure 1 is a schematic diagram of a longitudinal section of a master alloy with secondary shrinkage cavity without mold heating;

Figure 2 is a schematic diagram of the longitudinal section structure of the master alloy without secondary shrinkage after the mold is heated;

Figure 3 is a schematic diagram of the transverse macrostructure of the master alloy with secondary shrinkage cavity without mold heating;

Figure 4 is a schematic diagram of the transverse macrostructure of the master alloy without secondary shrinkage after the mold is heated.

Detailed ways

The present invention will be described in detail below through specific embodiments.

A method for eliminating shrinkage and porosity in vacuum smelting master alloy bars. The method is carried out according to the following steps:

Step 1: Prepare the alloy raw materials according to the calculated ingredient list and put them into the melting crucible, the melting crucible is magnesium or aluminum forming crucible;

Step 2: Smelt the crucible for the baking process and the furnace washing process. The furnace washing process uses pure nickel or the same steel return material to wash the furnace;

Step 3: Baking and degassing the alloy raw materials;

Step 4: Bake the funnel brick and the shunt brick for 2 hours at 400C respectively;

Step 5: Use an annular heating furnace to heat the mold in the ingot chamber of the vacuum induction furnace, and the heating temperature of the mold is 600-650C;

Step 6: Melt the alloy raw materials in the melting crucible under the condition of vacuum degree <4Pa to obtain the alloy liquid. The process of melting the alloy is divided into the melting period, the refining period and the alloying period. The melting period starts with low power transmission, and then Gradually increase the power, increase the temperature and melt in stages, and finally send the high power to the alloy raw materials to melt; the refining period is when the alloy raw materials are melted, the molten pool should remain calm, not bubbling, and the liquid surface should not turn over; alloying The expectation is that after adding other required alloying elements to the alloy raw materials, stirring the molten pool makes the alloy composition in the molten pool uniform;

Step 7: Pour the alloy liquid in step 6 into the mold, and the superheat temperature of the alloy liquid is 100��C-120��C;

Step 8: After the mold is cooled for 10-15 minutes, it is released. After the alloy liquid in the mold is fully solidified, the mold is demolded to obtain the master alloy.

Example 1

(1) Name of smelted alloy: K418.

(2) Ingredients: do ingredients and charge according to the calculated ingredients list.

(3) Preparation for smelting: 1) The smelting crucible adopts magnesia or aluminum molding crucible;

2) The crucible is baked and the furnace is washed, and the furnace washing process uses pure nickel or the same steel return material to wash the furnace;

3) Baking of raw materials: Baking and degassing the above raw materials of Ni, Co, Cr, W and Mo respectively;

4) Baking of refractory materials: hopper bricks and shunt bricks are respectively baked at 400C for 2 hours;

5) The ring heating furnace is used to heat the mold in the ingot chamber of the vacuum induction furnace, and the heating temperature of the mold is 600

(4) Vacuum smelting: smelt the alloy raw materials in the smelting crucible under the condition of vacuum degree<4Pa to obtain the alloy liquid. The process of smelting the alloy is divided into the melting period, the refining period and the alloying period. The melting period starts with low power delivery Then, the power is gradually increased, the temperature is increased in stages, and finally the high power is sent to the alloy raw materials to melt; the refining period is when the alloy raw materials are melted, the molten pool should be kept calm, not bubbling, and the liquid surface should not turn over. ; The alloying period is after adding other required alloying elements to the alloy raw materials, stirring the molten pool to homogenize the alloy composition in the molten pool.

(5) Pouring: When the temperature of the molten pool is appropriate, the molten pool can be charged after stirring. When the alloy liquid temperature is overheated by 100, turn the crucible to pour the alloy liquid into the funnel and pour into the mold according to the shunt plate.

(6) After the mold is cooled for 10 minutes, it is released. After the alloy liquid in the mold is fully solidified, the mold is demolded to obtain the master alloy.

Example 2

(1) Name of smelted alloy: K418.

(2) Ingredients: do ingredients and charge according to the calculated ingredients list.

(3) Preparation for smelting: 1) The smelting crucible adopts magnesia or aluminum molding crucible;

2) The crucible is baked and the furnace is washed, and the furnace washing process uses pure nickel or the same steel return material to wash the furnace;

3) Raw material baking: the above raw materials Ni, Co, Cr, W and Mo are baked and degassed;

4) Baking of refractory materials: hopper bricks and shunt bricks are respectively baked at 400C for 2 hours;

5) The ring heating furnace is used to heat the mold in the ingot chamber of the vacuum induction furnace, and the heating temperature of the mold is 620.

(4) Vacuum smelting: smelt the alloy raw materials in the smelting crucible under the condition of vacuum degree<4Pa to obtain the alloy liquid. The process of smelting the alloy is divided into the melting period, the refining period and the alloying period. The melting period starts with low power delivery Then, the power is gradually increased, the temperature is raised and melted in stages, and finally the high power is sent to the alloy raw materials to melt; the refining period is when the alloy raw materials are melted, the molten pool should remain calm, not bubbling, and the liquid surface should not turn over. ; The alloying period is after adding other required alloying elements to the alloy raw materials, stirring the molten pool to homogenize the alloy composition in the molten pool.

(5) Pouring: When the temperature of the molten pool is appropriate, the molten pool can be charged after stirring. When the alloy liquid temperature is over 110 turn the crucible to pour the alloy liquid into the funnel, and then pour into the mold according to the shunt plate..

(6) After the mold is cooled for 13 minutes, it is released. After the alloy liquid in the mold is fully solidified, the mold is demolded to obtain the master alloy.

Example 3

(1) Name of smelted alloy: K418.

(2) Ingredients: do ingredients and charge according to the calculated ingredients list.

(3) Preparation for smelting: 1) The smelting crucible adopts magnesia or aluminum molding crucible;

2) The crucible is baked and the furnace is washed, and the furnace washing process uses pure nickel or the same steel return material to wash the furnace;

3) Baking of raw materials: Baking and degassing the above raw materials of Ni, Co, Cr, W and Mo respectively;

4) Baking of refractory materials: hopper bricks and shunt bricks are respectively baked at 400C for 2 hours;

5) The ring heating furnace is used to heat the mold in the ingot chamber of the vacuum induction furnace, and the heating temperature of the mold is 650.

(4) Vacuum smelting: smelt the alloy raw materials in the smelting crucible under the condition of vacuum degree<4Pa to obtain the alloy liquid. The process of smelting the alloy is divided into the melting period, the refining period and the alloying period. The melting period starts with low power delivery Then, the power is gradually increased, the temperature is increased in stages, and finally the high power is sent to the alloy raw materials to melt; the refining period is when the alloy raw materials are melted, the molten pool should be kept calm, not bubbling, and the liquid surface should not turn over. ; The alloying period is after adding other required alloying elements to the alloy raw materials, stirring the molten pool to homogenize the alloy composition in the molten pool.

(5) Pouring: When the temperature of the molten pool is appropriate, the molten pool can be charged after stirring. When the alloy liquid temperature is overheated by 120, turn the crucible, pour the alloy liquid into the funnel, and pour into the mold according to the splitter plate..

(6) The mold is released after cooling for 15 minutes. After the alloy liquid in the mold is fully solidified, the mold is demolded to obtain the master alloy.

The improvement effect comparison diagram of the improved master alloy shrinkage cavity is shown in Figure 1 to Figure 4, and the production effect comparison of the improved master alloy is shown in Table 1..

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Manufacturing method of aluminum strontium alloy production process

The invention belongs to the technical field of aluminum-strontium alloy production, and specifically relates to an aluminum-strontium alloy production process.

Background technique:

As the name suggests, aluminum-strontium alloy is an alloy whose main elements are metal aluminum and metal strontium.Aluminum-strontium alloy profiles include plates, bars, wires, etc..Among them, the production process of aluminum-strontium alloy wire usually includes batching, smelting, casting and extrusion..That is, select suitable elemental aluminum raw materials and elemental strontium raw materials, mix them according to requirements, and then smelt and cast them into aluminum-strontium alloy bars, and finally extrude the aluminum-strontium alloy bars into aluminum-strontium alloy wires.

In the existing production process, extrusion molding usually involves placing the heated and softened aluminum-strontium alloy bar in a bar containing cavity outside the forming die, as shown in Figure 1, the forming die (2) and the bar containing cavity ( 1) Both are straight cylindrical and coaxial. In order to avoid deformation of the aluminum-strontium alloy rod in the radial direction, the radial dimension of the rod-containing cavity (1) is the same as that of the aluminum-strontium alloy rod. The extrusion of the aluminum-strontium alloy bar by the extrusion head makes the aluminum-strontium alloy enter the forming die (2) for extrusion molding, in order to avoid the softened bar from the gap between the extrusion head and the bar containing cavity (1) Extrusion, the radial size of the extrusion head is the same as the radial size of the bar containing cavity (1).

During the extrusion molding operation, the extrusion head is against the end of the aluminum-strontium alloy bar away from the forming die (2), and pressure is applied to the aluminum-strontium alloy bar. The softened aluminum-strontium alloy bar undergoes axial deformation and gradually enters In the cavity of the forming die (2), and extruded from the other end of the forming cavity to form a smaller aluminum-strontium alloy wire.As the wire is extruded, the height of the bar is gradually reduced. When the height of the bar is reduced to a certain level, the extrusion head will press the remaining bar on the end of the forming die (2), and the remaining The lower bar cannot be squeezed into the forming die (2) for forming. Due to the restriction of the bar containing cavity (1), it cannot move outwards and is separated from the wire, and finally left in the extrusion head and forming die (2) In between, it is extruded into a block shape to form wire scrap.If the scrap is not cleaned, the molded wire cannot be demolded, and the scrap is cleaned, on the one hand, the extrusion molding cannot be continuously performed, and the efficiency of the extrusion molding is low. On the other hand, it is molded into a block When the waste material is recycled and reused, it needs to be reheated for smelting, which is troublesome..



Technical realization elements:


The present invention intends to provide an aluminum-strontium alloy production process to solve the technical problems that the existing production process cannot be continuously extruded and has low efficiency.

The aluminum-strontium alloy production process in this scheme includes batching, smelting, casting and extrusion molding, and is characterized in that the extrusion molding is:

Step 1) Set up a residual material cavity between the straight cylindrical molding die and the bar containing cavity. The shape of the residual material cavity is frustum shape, the bottom diameter of the frustum shape is 30mm, and the taper of the cone is 1/3. The remaining material cavity is coaxial with the forming mold, and the bottom surface of the remaining material cavity is close to the forming mold;

Step 2) Put the cast aluminum strontium bar into the remaining material cavity, and extrude the aluminum strontium bar, so that the aluminum strontium bar is extruded into a wire through a forming die, and the remaining height of the bar is 10 -20mm, put in the next bar and continue to squeeze.

The frustum shape refers to the remaining part of the cone after the tip is removed, the bottom surface of the frustum shape refers to the bottom surface of the cone, and the top of the frustum shape refers to the end of the cone opposite to the bottom surface.

The technical principles and technical effects of the aluminum-strontium alloy production process of this program are:

Put the aluminum-strontium alloy bar through the bar containing cavity from the top of the residual material cavity into the residual material cavity, and the extrusion head enters from the bar containing cavity to apply pressure to the aluminum strontium alloy bar, and the residual material cavity Under the action of the extrusion force, the bars in the squeeze into the molding die for extrusion molding.To be bar tungsten carbide rods When the remaining height is 10-20mm, put in the next bar and continue to squeeze. Under the extrusion of the next bar, the previous bar continues to enter the molding die for extrusion molding. At the same time, because The bar located in the residual material cavity has a cavity left in the circumferential direction, and the bar will bulge and deform in the circumferential direction. In particular, the end of the previous bar located outside the forming mold will bulge outward and follow the residual material shape. The inner wall of the cavity moves in the direction of the rod accommodating cavity to wrap the next rod and squeeze the next softened rod radially inward, so that the two front and rear rods move in the radial direction. It will be fused together under double extrusion in the axial direction to realize continuous extrusion of the bar..With this extrusion method, the previous bar will not produce excess waste, and it will be extruded continuously with the next bar, thus saving the time for cleaning the excess waste and processing the excess waste..

In the prior art, in order to avoid the inconvenient extrusion of the bar material in the circumferential direction, or to avoid the bar material from being extruded from the feed end, the technicians will always think of using the feed end of the forming die to accommodate and transport aluminum. The size of the cavity of the strontium alloy bar is designed to be the same as that of the aluminum-strontium alloy bar, and the cavity that contains the bar is designed to be a simple straight cylinder. This is the most conventional choice for technicians according to the existing thinking. However, this The shortcoming brought by the design is the generation of excess waste. Even with reference to the technical means in this solution, when the remaining height of the bar is 10-20mm, the next bar is placed, and the two front and rear bars are only on the axis. It will not fuse together under the pressure of the direction. When the previous bar is squeezed to the end, the material on the inner side will enter the forming mold, but due to the small amount of material, it is inconvenient to form a complete wire, while the outer material Since it is not fused with the latter bar, the latter bar can drain it to the inside.Because of the intermolecular force, it will not flow to the inside. Due to the restriction of the inner wall of the bar containing cavity, it will not flow to the outside. Therefore, it can only stay between the next bar and the forming mold to form excess waste. , It affects the demoulding of the previous wire and the extrusion of the next wire. Therefore, after each bar is extruded, the excess waste must be cleaned up, resulting in low production efficiency and troublesome operation.

The following are the preferred solutions based on the above-mentioned basic solutions:

Preferred solution 1: In the step 1), the bottom diameter of the frustum shape is 30mm, the taper of the frustum shape is 1/3, and the height of the frustum shape is 30mm..

Preferred plan two: based on the basic plan or preferred plan one, in the step 2), when the remaining height of the bar is 15mm, put in the next bar to continue extrusion.

Preferred solution three: Based on preferred solution two, the smelting is:

Step 1) Heat the molten aluminum to 771-850C;

Step 2) Press the strontium ingot into the molten aluminum with a special tool until the strontium ingot is completely melted. The special tool includes a support rod. The lower end of the support rod is provided with a pressure cover, and the wall of the pressure cover is distributed with multiple through holes.In the prior art, strontium ingots are usually directly poured into molten aluminum, and the density of strontium is 2.54*103kg/m3, The density of aluminum is 2.7*103kg/m3, Strontium will float upwards after being put into molten aluminum, contact with air, it will be burnt easily at high temperature.In this solution, a pressure cover is used to press the strontium ingot to the bottom of the molten aluminum. On the one hand, it can prevent the strontium ingot from floating upwards and contacting the air and burning. Easier to dissolve in molten aluminum.Moreover, the strontium ingot reacts violently during the process of melting. The pressure cover is used to press it into the aluminum liquid. Compared with the pressure applied by an independent pressure rod, the strontium ingot will not continuously float upwards. Need to repeatedly apply pressure.There are a number of through holes distributed on the wall of the pressure cover. The through holes can facilitate the circulation of liquid aluminum and liquid strontium and the transfer of heat to facilitate the rapid melting of strontium ingots.

Preferred Option Four: Based on Preferred Option Three, during the smelting process, nitrogen is introduced into the molten aluminum for refining.Nitrogen refining can remove the oxygen in the aluminum liquid, avoid the oxidation of metal aluminum and metal strontium, which affects the alloy performance, and can also avoid the burning loss caused by the presence of oxygen in the aluminum liquid.

Preferred solution five: Based on preferred solution four, the support rod is provided with an air passage communicating with the pressure hood, and nitrogen gas is introduced into the molten aluminum through the air passage.In this way, nitrogen can be introduced into the molten aluminum. At the same time, the nitrogen can be introduced into the pressure hood, which can agitate the liquid in the pressure hood, which facilitates the melting of strontium ingots, and facilitates the circulation of liquid and the transfer of heat.

Preferred solution 6: Based on preferred solution 3 or 4 or 5, during the smelting process, while pressing the strontium ingot into the molten aluminum, a special tool is used to stir the molten aluminum.In order to facilitate the mixing of metal aluminum and metal strontium, and reduce the additional stirring process, the use of special tools in the present invention can skillfully achieve multiple functions at the same time: 1. Press the strontium ingot into the aluminum liquid to avoid the strontium ingot. Burnout; 2. Pour nitrogen into the molten aluminum to refine the molten aluminum. At the same time, it can strengthen the circulation and heat transfer of the liquid and accelerate the melting of the strontium ingot; 3. Stir the liquid to facilitate the mixing of the two metals.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of an extrusion molding die in the prior art;

Figure 2 is a schematic diagram of the structure of the extrusion molding die in the embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below through specific implementations:

Aluminum-strontium alloy production process, including four processes of batching, melting, casting and extrusion molding.among them:

Ingredients: select aluminum ingots and strontium ingots, weigh 100kg of strontium ingots and 1000kg of aluminum ingots in a ratio of 1:10, and mix.

Smelting:

Step 1) Put the aluminum ingot into the melting furnace and raise the temperature to melt the aluminum ingot into molten aluminum;

Step 2) Raise the temperature of the molten aluminum to 771-850C, and use special tools to press the strontium ingot into the molten aluminum. The special tools include a support rod. The lower end of the support rod is equipped with a pressure cover. The air passage connected by the hood, and the wall of the pressure hood is evenly distributed with multiple through holes.In the process of pressing the strontium ingot into the molten aluminum to melt the strontium ingot, use a special tool to stir the molten aluminum. At the same time, pass nitrogen into the molten aluminum through the air passage in the support rod for refining until the strontium ingot is completely melted.

Casting: The above-mentioned molten solution is slagged, and after standing for 5 minutes, it is cast into a cylindrical aluminum-strontium alloy bar to be extruded. The bar is 4kg/piece, the diameter of the bar is 20mm, and the height is 400mm; cooling with water.

Extrusion:

Step 1). As shown in Figure 2, a residual material cavity 2 is set between the straight cylindrical forming mold 3 and the bar containing cavity 1. The height of the forming mold 3 is 10mm and the diameter is 9.8mm; the shape of the residual material cavity 2 is frustum shape, the bottom diameter of the frustum shape is 30mm, the top diameter is 20mm, the taper of the cone is 1/3, the bottom surface of the residual material cavity 2 is close to the forming mold 3; the forming mold 3 The discharging end of the discharging end is provided with a discharging die 4, the discharging die 4 is frustum-shaped, the bottom diameter of the discharging die 4 is 20mm, and the top diameter is 9.8mm, the height of the output die 4 is 35mm.The bar containing cavity 1, the remaining material cavity 2, the forming mold 3, and the discharging mold 4 are coaxial, and the remaining material cavity 2, the forming mold 3, and the discharging mold 4 are integrally formed.

Step 2) Heat the aluminum-strontium alloy bar to 480-550C, and put it into the residual material cavity 2 through the bar containing cavity 1, and use the extrusion head to resist the end of the aluminum-strontium alloy bar , Use a 600-ton extruder to extrude the aluminum-strontium alloy bar, so that the aluminum-strontium bar is extruded into a wire through the forming die 3. When the remaining height of the bar is 15mm, put in the next bar to continue extrusion , And so on, to achieve continuous extrusion of aluminum-strontium alloy wire.

Through many experimental observations, when the production process in the embodiment is used to produce aluminum-strontium alloy wire, the strontium ingot will not be burnt, and during the extrusion process, no excess waste will be produced, and there is no need to extrude each one. The bar will treat the leftover waste.