Current Influence on the Welding Force and Welding Strength of Silver Tungsten Points

If you electrify silver tungsten points for a short time, for one thing, the temperature of its contact surface will rise sharply, for another, because the current lines near the beam area is curved, it will appear the phenomenon of short-arc of silver tungsten points. The aforementioned conditions will melt silver tungsten points, and it will lead to silver tungsten points welding eventually. If the current used to energize silver tungsten points is near to the critical value of welding current, to some extent, silver tungsten points be welded. The material of silver tungsten points and its surface state will influence the welding resistance of silver tungsten points directly. In case of that there are surface film layers and uneven energized treatment, so you can reinforce the weld of silver tungsten points.

Silver tungsten points possess high welding force and welding strength. The initial welding current of silver tungsten points is around 1000A, and its maximum welding force is about 165N when the current is 0.9 peaks current; and silver tungsten points possess the largest welding strength of 750Pa around when the current is 4600A.




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