Tungsten Copper Electrode Erosion Mechanism II

There are four kinds of tungsten copper processing, liquid phase sintering – repressing – re-sintering, solid phase sintering – repressing – re-sintering, infiltration – machining and pre-sintering tungsten (W) skeleton – melt dipping – machining. The last method is more popular currently, which make material has good mechanical properties. Because W grains is not longer individual in this process, which becomes firm tungsten skeleton after high temperature sintering. Therefore, this stable structure can endure the impact of machinery. Besides, the ability of resistance of cracks and expanding is much better in this way.

However, it is unavoidable that tungsten copper electrode also has weakness in structure. One is tungsten maybe has cracks, but it is unlikely. The other is more probable, which has pore in Cu when tungsten skeleton forming and condensation. Under high temperature and 10-times pressure, tungsten will emerge compressive stress, which will tear the cracks already exist. In addition, with the increasing of arc frequency, the stress of matrix enduring will enhance so that the cracks will expand and connected with cracks of surface outside.

More infomation about tungsten copper electrode erosion mechanism, click here:

http://news.chinatungsten.com/en/tungsten-information/79477-ti-10142

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