Increasing the durability of the parts of tillage machines due to replaceable wear-resistant elements

Abstract

Annotation Purpose. Increasing the durability of the parts of tillage machines due to the use of replaceable wear-resistant elements in their design. Methods. Abstract-logical, monographic, computational-constructive, graphic, micrometer, mathematical and physical modeling, experiment planning, mathematical statistics and regression analysis of experimental data, comparative and field tests of locally hardened experimental parts of tillage machines using the main provisions of the theory of friction and wear in abrasive environment. Results. A process of hardening with replaceable wear-resistant elements of ЧГ-40 subsoiler bits and a group process of hardening with replaceable wear-resistant elements of cutting knives (left and right) ЧГ-40 subsoiler points has been developed. Conclusions 1. A list of materials has been determined that are recommended for the manufacture of wear-resistant replaceable elements of the parts of soil cultivation machines, in particular, based on the results of accelerated comparative tests for the abrasive wear resistance of samples of different materials for replaceable elements, tungsten plates ВК-13 are recommended. 2. The processes of hardening with replaceable wear-resistant elements of chisels and cutting knives of the ЧГ-40 subsoiler points have been developed, which are based on hardening by the soldering method of tungsten plates ВК-13. 3. Based on the results of the production check of technological processes in the conditions at the Agricultural Limited Liability Company “Agrofirma “Krasne”, it was established that the operating time of the experimental working bodies of tillage machines exceeds the operating time of the serial chisel-subsoiler ЧГ-40 paws by more than 3 times. Keywords: durability, replaceable elements, hardening, wear resistance, soldering, parts, processes.