On the issue of improving the structure of tool steels

Abstract

The effect of carbide liquation on the local strength of T11302 and X165CrMoV12 ledeburite steels was studied. The features of the interaction of large carbide inclusions and a solid solution of alloys during the destruction of a composite material in which the lines of inclusions were located along and across the line of action of the tensile force, as well as at an angle of 45 degrees to it, were revealed. It is shown that in the manufacture of large matrices with a complex forming surface, the arbitrary orientation of carbides limits the durability of the tool in the manufacture of its working surface by methods of electro-erosion treatment. The use of triple reforging as a preliminary operation for processing the workpiece significantly increases the operational characteristics of the material by reducing the influence of carbide liquation.