Electrical materials

Tungsten copper alloy electrical material: mainly divided into electrical contact materials and electricalmaterials.

(1) electrical contact material. This is one of the most important electrical materials, they have high arc erosion resistance and anti welding properties, used for a variety of high and low voltage switchgear, and some instruments as electrical contacts, electrical contacts and the electrodes. Electrical contact is one of the largest amount of tungsten copper materials, especially the copper content in 20% ~ 40% of the maximum amount oftungsten copper material application, mainly used in high voltage, and switching apparatus, high current, such as the protection of circuit breaker contact transmission and other contacts, contact. With 15% ~ 20%Cutungsten copper contact can be used in voltage up to 500000 V or higher on a circuit breaker.

(2) electrical materials. By means of the resistance welding, riveting, electric upsetting, EDM technology ofelectrode and mould materials. EDM electrode requirements or mould material with conductive and anti arc erosion well, to ensure the machining accuracy, so the use of tungsten copper materials. Resistance weldingalso use tungsten copper materials. Electric riveting and electric upsetting in some occasions also usedtungsten copper materials.

The instantaneous high temperature materials

The instantaneous high temperature materials is an important and special tungsten and copper material, can be used in close to the melting point and slightly more than tungsten tungsten melting temperature, working time is very short, a few seconds to 200 seconds to complete the mission, so that the instantaneous high temperature materials. This kind of material is mainly used for high temperature components of spacecraft,such as rocket nozzle, guided missile, missile flight direction rudder head (nose, nose) and other components.Ablation resistance and thermal shock resistance is the main performance of instantaneous high temperature materials, because the gas temperature of solid fuel is as high as 2700 ~ 3300 DEG C, gas stream containing solid particles, with serious erosion and ablation of nozzle and gas vane and other components; and these components are in sharp temperature rise under the condition of (a few seconds to working temperature) work,resulting in damage to components of intense thermal shock. In the end, when the aircraft flying into spacebefore entering the atmosphere, due to intense friction speed by Li Ziyun to produce high temperature and erosion. W-Cu materials can meet the requirements of the good material.

With a carbon carbon (C - C) developed fiber composites and the development, because it is light and thermal shock resistance is good, the rocket nozzle throat are increasingly used to create. But the anti erosion is far better than the tungsten copper material, the nozzle throat those required for ablation of high tungsten based materials lining, rudder and other parts still need to be made.

Armor materials

Tungsten copper materials can be used as armor material, which is a so-called "Liner" material. With tungsten copper materials (usually W-30Cu material) made of cup-shaped or funnel-shaped hood, front flip to Janesammunition, gunpowder on the temperature and pressure of the jet formation and penetration into the cover.The earliest use of the copper manufacturing liner, and a large number of applications. In order to increase thecover unit quality so as to improve the penetration ability, cutting material type tungsten later research unitmass ratio of large copper cover, in the ideal case, it is the copper liner Armor ability is increased by about 30%.