Cu-W alloy (generally wcu7-wcu50) has uniform microstructure, high temperature resistance, high strength, arc erosion resistance, high density, moderate conductivity and thermal conductivity, which is widely used in military high temperature resistant materials, electrical alloys for high-voltage switches, electrical processing electrodes, microelectronics materials, as spare parts and components, widely used in aerospace, aviation, electronics, electric power, metallurgy, machinery Sports equipment and other industries.
Tungsten copper alloy is used as nozzle, gas rudder, air rudder and nose cone of missile and rocket engine in aerospace. Its main requirements are high resistance (3000K ~ 5000K) and high temperature airflow erosion resistance. It mainly uses sweat cooling effect (copper melting point 1083 ℃) formed by copper volatilization at high temperature to reduce the surface temperature of tungsten copper and ensure its use at high temperature. Tungsten copper alloy is widely used in WCu / CuCr of 128kv SF6 circuit breaker of high-voltage switch, as well as high-voltage vacuum load switch (12kV 40.5kV 1000A) and arrester. The high-voltage vacuum switch is small in volume, easy to maintain and widely used, and can be used in humid, flammable, explosive and corrosive environment. The main performance requirements are arc erosion resistance, welding resistance, small cut-off current, low air content, low thermal electron emission capacity and so on.
It has good machining characteristics and can produce dumbbell products of various shapes. Because of its good ductility, tungsten nickel iron high density alloy can be machined by turning, milling, planing, threading and tapping. Its main processing advantages lie in the diversity of processing methods and high processing accuracy. The machining accuracy of high specific gravity tungsten alloy can be up to + / -0.05mm by turning, and the complex machining parts can be processed in the early stage.
High specific gravity tungsten alloy dumbbells can also be grinded. The precision of this processing method is higher than that of turning, which can reach + / -0.01mm. Grinding mainly deals with the surface, chamfer, groove and other parts of products. The processing of tungsten alloy dumbbells with high specific gravity can be roughly divided into the following situations: using vehicle, milling, planing, drilling, grinding and other general machine tools to process counterweight parts. For counterweight parts with high precision requirements, it is difficult to guarantee high machining accuracy only by using ordinary machine tools, so it is necessary to use machine tools for machining
