The Influence of High-Chromium Powder Coatings on Wear Resistance of Working Parts
摘要
The article proposes a method for increasing the workability of a part by creating friction coatings from high-chromium metal powder on the working surface of the working parts. In order to increase the wear resistance of the working parts, tests were carried out in which iron-based powder with a high chromium content was applied using the plasma coating method, the result of which was an increase in its wear resistance by 3–4 times. A technology for the efficiency of high-chromium iron-based powder from local raw materials has been developed, as a result it allows increasing the efficiency of the powder by 85%. It was determined that when forming friction coatings from a high-chromium powder mixture using a gas flame, the porosity of the coating decreased to 7%, and the hardness reached 54…56 HRC. Also, the service life of a share made of steel 40X (alloy carbon steel) increased by 3.5–4 times compared to a share made of steel L53 (ploughshare steel), subject to heat treatment.