AXSR Copper Alloy Material Technology Group is an invisible champion enterprise in the field of high-performance electrical contact materials and products in China.
The company has 9 product divisions:
●Medium voltage vacuum copper-chromium series contact material division
The medium voltage vacuum copper-chromium series contact material division specializes in the production of CuCr10-CuCr50 (containing Cr10%-50%) series of contact materials, which have excellent vacuum breaking and pressure resistance capabilities. It is widely used in the contact material of vacuum interrupter for vacuum circuit breakers of 126kV and below. It is currently the main contact material used in vacuum interrupter. The company currently has four production lines of vacuum infiltration, vacuum casting, vacuum arc melting, and powder mixing sintering. There are more than 100 vacuum sintering and smelting equipments. The company has the ability to produce 8 million pieces of CuCr contacts of various specifications. The world’s largest manufacturing base for vacuum contact materials.
●Medium and high voltage tungsten copper series contact material division
The medium and high voltage tungsten copper series contact material division specializes in the production of copper-tungsten alloy materials, which have high voltage resistance and arc ablation resistance. It is widely used in various switch arc contacts, and is currently the most widely used contact material in various switches. The company has built production lines for producing copper-tungsten contact materials by means of vacuum infiltration, atmosphere protection infiltration, friction welding, electron beam welding, etc., and has the ability to provide 200,000 pieces of various copper and tungsten products to the market every year.
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Vacuum consumable arc melting CuCr25~CuCr50 electrical contacts
The product is manufactured by vacuum consumable arc melting process, and has the characteristics of low gas content, uniform microstructure and excellent consistency of product quality. It is widely used in 1.14KV-126kV voltage class vacuum switch field.
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High performance CuCr₂ contact cup
The product is a core element applied to the vacuum arc quenching chamber. Our company uses vacuum casting process to produce CuCr₂ material. It has the characteristics of high conductivity, high strength and excellent high temperature resistance.
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CuW conducting rod
One of the key parts of high voltage switch, mainly used in 40.5KV-1100kV voltage level switch. Considering the resistance to arc ablation and high electrical conductivity, the company uses vacuum penetration/atmosphere penetration + friction welding/electron beam welding/brazing process.
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●Electromechanical Division-High conductivity, high strength, high temperature resistant copper alloy materials and products
The main products of the Electrical and Mechanical Division are high-conductivity, high-strength, high-temperature resistant copper alloy materials, such as end rings, guide bars, shrink rings for high-speed railway motors and subways, and slot wedges, hollow conductors and damping parts for large generators. . Mainly used in high-speed railways, subways, oil and gas and wind power generation.
●Copper Busbar division
The copper busbar business unit is based on the fact that the company is the only domestic copper alloy company that has passed the rail transit IRIS certification. This business unit provides special-shaped copper busbars and flexible connections for rail transit locomotives to European and American foreign companies.
●High temperature alloy precision turbine disc division
In response to the domestic and foreign markets’ demands for high-precision precision machining of high-power diesel locomotives, gas turbines, and aero-engine superalloy turbine disks, the company introduced the world’s most advanced five-axis turning-milling composite machining center and two high-speed horizontal machining centers of 6 meters and 4.5 meters. The side broaching machine has built a high-temperature alloy turbine disc precision processing production line, which is the only private enterprise in China, and has supplied products to the domestic and international high-end markets in batches.
●Medical Products Division
Based on the company’s technical reserves and advantages in vacuum smelting copper alloy materials, at the request of Siemens Medical Business Department, we developed special performance copper alloy materials (copper nickel 44 manganese) and vacuum welding components for medical CT equipment X-ray tubes for them. And expanded to support this product for several well-known domestic and foreign enterprises.
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Copper-nickel alloy shell assembly
Supporting the anode and cathode, the key component of the X-ray export. Keep the ultra-high vacuum environment clean to maintain high vacuum and high pressure. It involves copper nickel alloy and stainless steel welding. After surface treatment, the specified heat radiation coefficient is reached, which is conducive to the heat dissipation in the tube.
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Stainless steel shell assembly
Supporting the anode and cathode, the key component of the X-ray export. Keep ultra-high vacuum environment, keep clean, to maintain high vacuum and high pressure; It involves multistage welding of stainless steel, copper alloy, beryllium sheet, nickel ring and kevlar alloy, which requires higher position relations. By means of surface greening, the thermal radiation coefficient in the shell and tube can be increased.
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Copper shell component
Support the cathode and anode, the key component of X-ray export. Maintain the ultra-high vacuum environment and keep it clean to maintain high vacuum and high pressure. It involves welding of oxygen-free copper, beryllium sheet, Kovar alloy, nickel alloy and other alloys, and improves heat dissipation in the tube through internal surface treatment.
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Rotor brazing assembly
Connecting precision bearings and metal target plates up to 4KG involves multi-stage high-temperature vacuum brazing of refractory metals, steel, and copper, requiring sufficient material strength and welding strength combined with ultra-high precision machining and annealing processesSpecial coatings are required to improve the thermal radiation coefficient (materials involved: Molybdenum and molybdenum alloy, stainless steel, oxygen-free copper, low expansion superalloy)
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Bearing sleeve component
Protective bearing, high temperature strength and high thermal conductivity, dispersion strengthened oxygen free copper is the best choice, requires vacuum grade materials and vacuum brazing process. Materials involved: dispersion copper enhanced oxygen – free copper, Kovar alloy, stainless steel.
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Brazed components used in the medical imaging industry
Exhaust pipe components, nuclear magnetic resonance service towers, etc, involve vacuum brazing of copper alloy, nickel alloy, and stainless steel materials to provide customers with better services.
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The business unit has supplied various special copper alloy products with independent intellectual property rights to domestic and foreign customers in batches, contributing to the localization of key materials and components for national medical equipment.
●Metal Chrome Division
The company has a unique ultra-low temperature (minus 196 degrees) production line for preparing high-quality low-oxygen metal chromium powder in China, which is one of the core technologies for the performance and quality assurance of copper-chromium series contact materials and chromium-zirconium-copper alloy materials.
In addition to satisfying the company’s use of high-quality chromium powder, it also supplies high-quality chromium powder to Siemens, GE and other European and American companies.
Based on more than 20 years of technological precipitation in metal chromium treatment, the future will provide strong technical support for the development of high-end national nickel-based and chromium-based superalloys.
●High Voltage Products Division
The high-voltage products division specializes in the production of copper-chromium (VI), tungsten-copper (SF6) and chromium-zirconium-copper series electrical alloy materials, sputtering targets for vacuum coating, and electrode products for automotive welding.
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High-speed rail transit motor rotor end ring (short circuit ring), as a part of the rotor winding, a general motor rotor needs two end rings (short circuit ring), the guide bar extended at both ends of the core with two end rings (short circuit ring) to connect all the two ends of the guide bar. It has excellent electric and thermal conductivity, high strength and high temperature softening resistance. |
At present, the company has formed four major technical systems: melting casting, infiltration, cold and hot extrusion, and precision casting, which support the production and development of different products.
●Advanced Copper Alloy Material Preparation Division
The Advanced Copper Alloy Material Preparation Division mainly produces chromium-zirconium-copper alloy bars, wires, wires, other special alloys, master alloy materials and special-shaped casting products. Currently, it has multiple vacuum induction melting furnaces, non-vacuum intermediate frequency induction furnaces, forging, Machining and other equipment, the annual production of copper materials and products exceeds 3000T. With the development of the project, it has successfully developed CuNi2Si series alloys, CuAlNi series alloys, CuFeP alloys and other materials, and produced copper-magnesium, copper-chromium, copper-zirconium and other intermediate alloy materials. It is widely used in electric power, electrical, rail transit, automobile, magnetic materials and other industries.
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Customer Reference
XASR is not only a leading alloy technology company specializing in R&D and manufacturing of a new generation of high-conductivity and high-strength copper-based alloy new materials in China, but also the world’s largest professional R&D and manufacturing copper-chromium series contact material manufacturer. Products are exported to more than 60 world-renowned large companies in dozens of countries including the United States, Britain, France, Germany, and have established strategic partnerships with many domestic and foreign companies such as Siemens Power, ABB, Schneider, Toshiba, Eaton, GE Transportation, Alstom, CRRC, National Grid, Siemens Medical,CRRC. Won Bombardier‘s “Best Quality Supplier”, GE “Best Competitive Supplier Award”, and GE Transportation “Global Best Supplier”……