INCREASE OF OPERATING STABILITY OF PRODUCTION TOOL UNDER CONDITIONS OF NON-UNIFORM REDUCTION ON BASIS OF DIFFERENTIAL APROACH TO STRENGTHENING OF ITS SURFACE

There the model of wearing process of rolls of many-roll passes has been developed, the differential approach to the working of effective areas of tool has been offered. The mathematical dependences to determine the heating temperature and the depth of strengthened layer have been found. The novelty has been documented by four Inventor's Certificates. The expectable profiles of wear of rolls of many-roll passes have been designed. The technique to determine the optimum modes of plasma strengthening has been presented. The processes of differential working of tool to decrease the wear and to decrease its non-uniformity have been substantiated by science and have been developed. The strengthening process of punches of cold heading is planned to introduce. The production tests of strengthened tool showed the increase of its wear resistance 1,5 - 2 times on the keeping of requirements of GOST standard for the metal productsAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio