An experimental analysis of Nanocoated cutting tool inserts on Turning aisi 416 and en24 steels

Abstract

In the current situation coated tungsten carbide cutting tool inserts are broadly used in market to bring high level of productivity in manufacturing engineering. Coated tungsten carbide cutting tool inserts are used for machining super alloys and stainless steel. In the manufacturing sector new materials are invented with high hardness, hence for machining hard materials advanced nanocoated cutting tool inserts are essential. Thus the coated cutting tool inserts plays an important role in manufacturing industry. The selection of right coating materials and the coating methods are very important consideration. There are two different kind of methods are employed for coating processes, one is the Chemical Vapor Deposition (CVD) and another Physical Vapor Deposition (PVD).The PVD and CVD are the methods for coating processes with coating range of up to 20 microns. The PVD working temperature is 500°C is suitable for coatings but in the CVD the working temperature is 1000°C which tends to reduce the dense property of the cutting tools. Hence a method of PECVD (Plasma Enhanced Chemical Vapor Deposition) with a working temperature of 500°C is chosen instead of CVD coatings. Therefore, the present study is undertaken for analyzing the tool life, tool hardness, flank wear and surface roughness of the coatings fabricated using PECVD and PVD processes. This research focuses on the comparison of experimental and theoretical results obtained during the turning of AISI 416 stainless steel using tungsten carbide nanocoated cutting tools. The current work aimed the experimental study of (PECVD) and Physical Vapor Deposition (PVD) multilayer nanocoatings on the tungsten carbide cutting tool inserts. The tungsten carbide cutting tool inserts are coated with PECVD-TiAlSiN and PVD-TiAlN multilayer nanocoatings their investigation on the experiment proceeded. newline