Comparative studies of the properties of the tools made by electrodischarge sintering and hot pressing

摘要

The dependence of the abrading capability of the tools, made by electrodischarge sintering and hot compacting, on the usage duration has the periodical nature, each holding the periods 30-40 min for grinding samples and 100-120 min for cutting samples (plates). The abrading capability has the stable increase in the extreme points. The experimental criterion is proposed, that defines the tool operation regime the "index of grindability". The advantage in the processing abilities is observed for all types of the above tools made by the electrodischarge sintering.