Main Factors on the Quality of Tungsten Contacts (1)

1. Metallurgical defects of tungsten blanks can affect the quality of tungsten contacts

Metallurgical defects of tungsten blanks mainly refer to: in the smelting process, tungsten blanks inside form inclusions, porosity and other defects. Moreover, some of these defects, there is no way to exclude even in stamping process, for example, Ni, Fe and other impurities or compounds distribute in the grain boundary. Because the presence of these pores, impurities and other defects undermine the combination of grain surface, so the metal base is not continuous, which will lead to tungsten blanks in the process generate cracks or tears, may also lead to the final product --- tungsten contacts produce splitting and brittle fracture.


 

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