About Abrasive Properties of Steel Erosion Products During Electrospark Processing

摘要

An investigation was made of abrasive properties of metal powders, obtained by the electro-spark method. Investigated were steels 40KH, 2KH13, R18, and alloy T15K6, as well as boron and silicon carbides. Dispersion of these materials took place in kerosene with the aid of an electro-spark installation. The investigated material in amount of 100 mg, wettened by 2-3 droplets of water, was introduced between the glass and steel disks. The abrasive properties of the materials were measured by the wear of the glass disk after each 3000 revolutions and quantitatively evaluated on the basis of the following values: wear intensity of glass disk, representing the magnitude of wear, calculated per one revolution; by relative intensity of wear (ratio of wear intensity under effect of metal powders I sub e to wear intensity under effect of boron or silicon carbidy powders I sub k); and relative summary wear (ratio of summary wear under effect of metal powders within any given testing time to summary wear under effect of silicon or boron carbide powders during the very same testing time).