EQUIPMENT FOR APPLICATION OF PLASMA WEAR-RESISTANT COATINGS BASED ON M-CROLL
Keywords:
plasma ceramic coatings, m-crоll, plasmatron, powder feeder, performance characteristics, adhesion strength, porosityAbstract
A set of equipment has been developed for the formation of plasma wear-resistant coatings based on M-rolls. The characteristics and parameters of the developed set of equipment for the formation of plasma coatings are presented, as well as the results of its testing. To implement new technological schemes for applying coatings with improved performance characteristics, a whole range of new equipment has been developed, patented and manufactured. The experiments carried out show that the PBG-1 plasma torch and the PPBG-04 powder feeder developed by the authors have at least a 2-3 times higher service life when spraying materials from M-rolls and ceramics compared to serial equipment from the Plasma-Tekhnik company, due to changes in the design of the cathode-anode unit of the plasma torch and the design of the feeding unit of the feeder, facilitating uniform supply of powder into the plasma jet and better penetration. The result is higher quality plasma coatings with improved performance characteristics: adhesion strength increases by 1.3-2 times, material utilization rate by 1.5-1.6 times, microhardness by 1.2-1.4 times, porosity decreases by 2-2.5 times.
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