Abstract
A fundamental study was conducted to understand the changes in electrical- arc-induced wear. 303 stainless steel and a bearing made of 52100 steel were selected for the study. An arc was drawn between the two surfaces and experiments were conducted with external voltages of 10–90 V. The arc crater and mountain volumes, the average disturbance diameters, and the maximum crater depth and mountain heights were measured and correlated with the arcing power. A relatively large amount of energy was received by a small area over a short period of time. It was found to cause considerable melting, corrosion, hardness changes and other phase changes in the heat-affected zone and possibly direct ablation of the material. Lips were formed, which were sheared or fractured during subsequent relative movement of the mating member, leading to abrasion, corrosion, surface fatigue and fretting.
Published Version
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