Strengthening machine elements working under abrasive environment by alloying with hard layers and their estimation

Abstract

The possibilities of the life increase of machine elements working under intensive abrasive wear conditions by alloying with electric arc coating electrodes are ana-lysed. The research objective is plough points – the ele-ments working under intensive abrasive wear. The analysis of worn points is presented. Methods of both choosing strengthening materials of intensively wearing parts and estimating coating cost and varying wear intensity are de-veloped. The materials forming low or medium alloy lay-ers on surfaces are found to be unsuitable for coating of agricultural machine elements. The resistance to abrasive wear of alloyed layers has been experimentally tested and their chemical composition, hardness have been deter-mined. A proper choice of the materials strengthening sur-faces working under quartz sand environment compared to boron micro-alloyed steel is estimated to reduce wear up to 9.7 times.