Characterization of multilayer coated cutting tools in different machining processes – A review

• Main Authors: Ganeshkumar, S., Gokilakrishnan, G., Dharanidharan, M., Manoj, S., Gautam, K.
• Format: Conference Proceeding
• Language: English
• Subjects: Aluminum oxide; Carbon steels; Comminution; Cutting tool materials; Cutting tools; Cutting wear; Dry machining; Inserts; Machinability; Milling (machining); Multilayers; Nickel base alloys; Physical vapor deposition; Process parameters; Productivity; Protective coatings; Superalloys; Surface finish; Thickness; Tool life; Tool wear; Turning (machining); Wear resistance; Workpieces
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0176778

Metal removal is predominant in manufacturing industries to finish the product with desired dimensions. The conventional machining processes with single-point cutting tool turning operation, grinding, shaping, and milling involve cutting metals which leads to wear. The worn-out tools decrease productivity, increases the machining cost, and decrease the poor dimensional accuracy. Several pieces of research have been carried out to increase dimensional accuracy, reduce wear and increase productivity. The researchers investigated materials’ characteristics, cutting tool conditions, machining process parameters, etc. This article explores the characterization of multilayer coated cutting tools in turning operations. The correlation of multilayer thickness and tool wear with the surface finish of the workpiece. The multilayer of TiSiN, Al2O3, Al2O3ZrN, ZrN, TiAlN, and AlCrN coated tool inserts with varied multilayer coating thickness leads to changes in machining characteristics. The thickness of up to 5 µ of coating leads to optimum wear resistance and good machining properties. The literature study of multilayer coating materials in turning operation concludes that TiAlN multilayer coated tool inserts behave with good machinability and wear resistance properties in the machining of steels. Under dry machining conditions, it was reported that an average tool life of 75% and 85% improved using PVD (Physical vapor deposition method of coating technique) in the machining of Inconel 718 and carbon steel workpieces, respectively.