Improvement of ironing technology in restoring and hardening worn out car parts

Abstract

Currently, active research is being conducted in Russia and abroad to study the so-called composite electroplating coatings (CEC). The promise of this method lies in the fact that by introducing special additives into the electrolyte, which are usually fine powder, coatings can be obtained with properties unattainable with ordinary electrolytes. For the introduction into the electrolyte, as a hardening additive, it is recommended to use powders obtained by the method of electroerosive dispersion. The process of obtaining powder materials by the method of electroerosion dispersion differs favorably with the possibility of obtaining powders even from particularly hard and refractory materials. In the case of grinding material with this method, the only important criterion is the electrical conductivity of the material being ground. Worn parts and other scrap can be used as feedstock during the process. The purpose of the study is to improve the technology of restoring worn automotive parts with composite electroplated coatings due to the use of electroerosive powders as a hardening phase. Due to the study of samples of the used powder, as well as the study of the properties of the deposited coatings on modern devices, results were obtained showing the high potential of this recovery method. It has been established that even a small addition of EDM powder to the electrolyte (5 g/l) allows to improve the performance of the deposited coating.