Lower gas and impurities made ​​of tungsten sheet

Physical properties and electrical properties of tungsten-copper contact materials are used in a large number of high-voltage switchgear, load switch , automatic breaking and other high-voltage switchgear , switches and security , reliability , largely depends on the contact material . Fiber reinforced metal matrix composites having a good transverse mechanical properties, electrical conductivity, high thermal conductivity , having a higher corrosion resistance . This paper uses netting lamination , tungsten fiber weft , copper ( small) for the two-dimensional warp knitted mesh, the mesh and copper billets stacked together in a vacuum  sandblasted tungsten target  infiltration preparation of new tungsten copper contacts materials , and electrical properties were studied in vacuo . Low gas content and impurity content of the rule of law into the tungsten-copper composite electrode material tissue while avoiding the traditional process of mixing the powder caused by uneven uneven , making partial contact material does not appear in the course of ablation phenomenon . This paper studied the preparation of novel specific copper tungsten contact material , the fibrous  Tungsten copper alloy  liquid infiltration process . While using a small current through the circuit design their own experiments , direct and effective measure of the value of its closure and arc life, breakdown voltage , arc resistance and examine the strength of the new tungsten-copper contact materials by observing the morphology after arc erosion according to arcing and electrical contact theory, the erosion mechanism arc erosion morphology .