Electrical Life Research on Tungsten Copper Points

What decide appliances’ electrical life? The electrical wear of it determined. The electrical life of tungsten copper points’ is determined by the density, melting point and conductivity of its raw material.

There are three phase process (sophisticated phase, stable phase and failure phase) of tungsten copper points’ electrical wear. Among which the length of stable phase time is acting as a decisive role on points’ materials electrical life. Only when the binder phase’s component, copper and tungsten skeleton in points’ material, whose mass ratio is controlled in a certain extent, can the electrical wear time of points’ material stable stage could maintain the longest.

Points’ materials electrical wear, during its opening and closing process, which mainly owning to the arc and other thermal effects, making copper surface melting, vaporizing and splashing, leading to the rest skeleton materials, due to recrystallization, crystal growth, friction and wear, will break down soon in the subsequent process.

 

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