GRINDING OF THE SURFACE OF RECONSTITUTED HARD-TO-PROCESS POWDER MATERIALS

Abstract

 The article discusses the use of impregnated abrasive wheels for grinding the surface of recovered hard-to-process powder materials. The paper investigates the formation of a rough surface during internal grinding of cylinders of marine engines after restoration to their 
original dimensions, with powder materials of grades PG-CP2, PG-10H-0.2 containing nickel, chromium, iron and other hard-to-work metals, which during the restoration process create a special protective metal layer on the surface of the cylinders, the processing of which is very difficult It's difficult. Therefore, the grinding of the internal surfaces of the restored cylinders of marine engines is a complex technological process that proceeds in strict compliance with all technological operations, in stages. According to the results of the study, the influence of the rotation speed of the workpiece on the roughness of the inner surface of the sleeve, accompanied by grinding with impregnated grinding wheels, was revealed. It has been experimentally confirmed that when treated with impregnated abrasive wheels, the roughness of the polished surface decreases by about 1.5-1.8 
times.