Sintered alloy powder alloy cutting tool

Abstract

In work results of a research of features of wear of the cutting tools manufactured by agglomera-tion of powders on the basis of quick cutting steel are presented. It is shown that the powder tool materials on the basis of quick cutting steel which are in addition alloyed by carbide of the titan have high wear resistance and they can be classified as a new class of the self-organized tool ma-terials. The received results allow to draw a conclusion that it is expedient to carry out an addi-tional alloying by means of the next 2 ways of impact on friction and wear of tools. The first is an alloying by means of connection which allows to reach considerable decrease in level of self-organization as a result of reduction of coefficient of friction at working temperatures. The sec-ond way is an alloying which gives the chance to expand a self-organization interval. It is reached by use of connections which cause transformations of structure of secondary structures and increase in coefficient of hardening. Application of both ways is followed by transition to friction with smaller effort and thermal loading that is confirmed by change in wear resistance and tribotechnical characteristics. As have shown researches, wear resistance of such tool is 2 – 3,5 times higher than wear resistance of ordinary tools from quick cutting steel.