The Effects of Cutting Tool Coating on the Surface Roughness of AISI 1015 Steel Depending on Cutting Parameters

Authors : Hasan GÖKKAYA

Pages : 307-316

Doi:10.3906/sag-1209-76

View : 19 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The effects of a number of cutting tool coating materials on the surface quality of workpieces, depending on various cutting parameters, were investigated. AISI 1015 steel was processed without cooling on a lathe using 4 different cemented carbide cutting tools, i.e. uncoated, coated with AlTiN and coated with TiAlN using the PVD technique, and one with 3-layer coatings insert ignore into journalissuearticles values(outermost being TiN); applied by the CVD technique. Among the cutting parameters, the depth of cut was kept constant insert ignore into journalissuearticles values(2.5 mm); while the cutting speed and feed rate were changed. Five cutting speeds insert ignore into journalissuearticles values(50, 73, 102, 145, 205 m/min); and 2 feed rates insert ignore into journalissuearticles values(0.24 and 0.32 mm/rev); were used during the machining process. Coating type, feed rate and cutting speed have different effects on surface roughness. In the experiments, less average surface roughness was obtained by using a 3-layer coated tool coated outermost with TiN. The lessening of cutting speed by about 33% improves the surface roughness by about 26%, and increasing the cutting speed by about 310% resulted in an improvement of about 69%.
Keywords : Machining, Surface roughness, Cutting tool coating, Cutting parameters