A STUDY ON CREATION OF TiN COATING ON CUTTING TOOL BY VACUUM ARC DEPOSITION METHOD

Abstract

In this paper, TiN coatingwas created on drills made of high-speed steel by
vacuum arc method using on HCM700 coating machine. At first, the TiN coating
is coated on P18 steel samples using proposed technological parameters to
evaluate the TiN coating properties such as the thickness, hardness and chemical
composition. Then, the coating technological process was applied to create the
TiN coating on the high-speed steel drills. The measurement results showed that
the TiN coating was uniform on the steel sample surface and met the
specifications of hardness and the valid ratio of Ti and N components. Test results
of drilling 45 steel with TiN - coated drills showed that the TiN coating adhere
well to the working surface of the drill, is not damaged after a period of
machining. TiN coating created by the vacuum arc method has the potential to
be applied to cutting tools and mechanical parts to improve working durability.