Research and modeling of the wear process of parts of the soil tillage working implements

Abstract

Increasing the wear resistance of parts of tillage working implements and increasing their resource is an urgent problem. A decrease in the resource of tillage working implements occurs due to uneven wear of their parts and soil features. Accelerated wear of working surfaces reduces the quality of soil cultivation, increases the traction resistance of tillage machinery and thereby allows to an increase in the energy intensity of soil cultivation technology.The article presents the mathematical models developed by the authors that describe the process of interaction of the soil with the surface of parts of soil-cultivating working implements during their surfacing with hard alloys. The developed mathematical models make it possible to predict the values of traction resistance, the magnitude and rate of wear of the tillage working implements. The results of experimental studies confirm the adequacy of the developed mathematical models and indicate that the deposition of hard-facing from hard alloys of certain sizes and configurations on the working surfaces of the parts of soil-cultivating working implements ensures their wear resistance when working in an abrasive soil environment. The results of experimental studies of a plowing unit consisting of tractor MTZ-920 tractor and plow PLN-3-35 for sod-medium podzol, medium loamy (light loamy) soils on moraine loam showed that the wear resistance of the deposited share is 2.54 times higher than the wear resistance of the standard ( serial) plowshares without surfacing.