Process introduction
Silver tungsten powder contact is one kind of silver-base electrical contact materials with tungsten frame which is produced by powder metallurgy method. It combines the excellent thermal and electrical conductivities of silver and the high melting point and small burning loss of tungsten. It has high hardness, low mechanical abrasion, excellent arc erosion resistance and fusion welding resistance. The AgW material has high brazed area ratio and welding strength, the small size contact can be used in automotive welding, and the large size contact with brazing material is easy and efficient to weld.
Performance introduction
Raw material powder of different particle size is selected, trace elements such as nickel and cobalt are added, and pre-sintering and activation sintering technologies are adopted to improve the product density, thus improving the electrical properties of contact materials
Application area
Applied to all kinds of universal circuit breakers, molded case circuit breakers, heavy load ac, dc contactors and other switching electrical appliances.
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