鉄鋼材料の放電加工面における変質層

抄録

In the electrical-discharge machining, the eroded surfaces were often affected by working media or electrode materials, not only to their crystal structures, but also to compositions. The surfaces of some steels, eroded by electrical-discharge, using of kerosene as working media, were examined by X-ray diffraction and optical microscope. The eroded surfaces were carburized abnomally, and some rapid-melted and rapid-solidified layers of high carbon or white-pig-like structures were found.