APPLICATION OF WC-Ni PLASMA SPRAY COATING TECHNOLOGY TO RESTORE AND ENHANCE WEAR RESISTANCE FOR LATHE SLIDEWAYS

Abstract

Wear is one of the main causes of damage and reduced performance of machine parts operating under harsh conditions. In practice, various types of wear exist, making wear control and durability enhancement crucial concerns for manufacturing industries. This paper explores the application of plasma spray coating technology for repairing and improving the wear resistance of lathe tool slideways. The lathe slideway is a crucial component that determines the accuracy of parts during machining, requiring high durability and good wear resistance. WC-Ni material was chosen for its superior mechanical properties and durability. Before applying the coating to the product, the WC-Ni coating was created on samples with a substrate material similar to the product using plasma spray technology. The samples were then evaluated for properties such as adhesion strength, hardness, and wear resistance of the coating through standard testing methods. The spraying parameters included a current intensity of I = 678.9A, a powder feed rate of m = 30.8g/min, and a spraying distance of L = 159.3mm, applied to both test samples and products. The results showed that the WC-Ni coating applied using plasma spray technology significantly improved the wear resistance of the slideways, thereby considerably increasing the lifespan and performance of the lathe.