What are the properties of copper tungsten alloy contacts?

    In the 21st century, with the rapid development of social economy, the demand for polymer materials is getting higher and higher. In order to better meet the requirements of arc welding resistance, electric corrosion resistance, high oxidation-reduction potential, and low gas supply required by high-voltage arcs, we have carried out a series of technical improvements to the production technology of traditional high-voltage arcs. The excellent fusion of copper with high electrical conductivity and heat transfer and tungsten with high temperature compressive strength and strong resistance to arc burnout enables tungsten-copper composite materials to have a series of excellent properties, which are widely used in electrical contact raw materials, electronic packaging and heat sink materials. middle. According to the selection of pure tungsten powder molding, high temperature calcination, copper infiltration and copper cladding at one time to produce tungsten-copper composite material copper-tungsten alloy contacts suitable for high-voltage arc applications. This kind of manufacturing process makes the compressive strength of the tungsten frame extremely high, and the steel network is spread all over, the substrate structure is fine and uniform, and the vapor composition is low, and the copper clad layer is closely integrated with the tungsten-copper substrate, which not only achieves high pressure. The application of the arc is regulated, and the product cost of the high-voltage arc contact is reduced, thereby obtaining good economic benefits.

    performance

    High-quality copper-tungsten alloy contacts are the key components of high-voltage isolating switches, high-voltage switch cabinets, high-voltage isolating switches, and power switches for grounding devices. The quality of the electrical contacts, especially the arc contacts, will immediately endanger the quality and service life of such high-voltage household appliances. Thus, the performance requirements for contacts in high voltage arc r applications are relatively high. Precision copper-chromium alloy contacts have good arc ablation resistance and arc welding resistance, good arc breaking performance, good electrical conductivity and heat transfer, small thermal deformation, no softening at high temperature, high toughness, high density, high toughness, etc. characteristic. It has very good electrical conductivity and heat transfer, good high temperature compressive strength and certain plasticity. At the ambient temperature above 3000 ℃, the copper in the aluminum alloy is vaporized and volatilized, and a lot of digestion and absorption heat is generated, reducing the surface temperature of the raw material. It is not difficult to see that tungsten copper contacts are the choice for high-voltage arcs.