Comprehensive study of wear resistance of coatings formed on the surface of cast parts under abrasive wear
Abstract
The working elements of agricultural and road construction machinery operating in abrasive environments often fail prematurely due to intense wear. Enhancing their wear resistance is therefore a pressing challenge. This scientific article presents the results of laboratory, bench, and field tests of undercarriage components of tracked machines, whose working surfaces were strengthened with wear-resistant coatings. Borided and boro-titanized coatings were formed on the working surfaces of the support and drive rollers, while composite bimetallic coatings based on PG-S27 “Sormite” with the addition of boron carbide were applied to the running surfaces of track links directly during casting. Numerous tests have demonstrated that the developed technologies for forming wear-resistant coatings on the friction surfaces of tracked machine undercarriage parts increase their wear resistance by a factor of 5 to 7. This represents an effective solution to one of the most critical operational challenges for machinery working under conditions of severe abrasive wear.