Investigation on the performance of deep and shallow cryogenic treated tungsten carbide drills in austenitic stainless steel

• Published in: Measurement : journal of the International Measurement Confederation Vol. 125; pp. 687 - 693
• Main Authors: Arun, M., Arunkumar, N., Vijayaraj, R., Ramesh, B.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2018
• Subjects: Austenitic stainless steel; Burr; Deep cryogenic treatment; Drilling; Ovality; RSM; Shallow cryogenic treatment; Surface roughness; Tempering; Drilling; Austenitic stainless steel; Shallow cryogenic treatment; Tempering; Surface roughness; Deep cryogenic treatment; Burr; Ovality; RSM
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2018.05.018

[Display omitted] •Cutting speed is more influential than feed in determining the hole quality.•Deep and shallow cryo-treated drills will exhibit equivalent performance in making short series of holes.•Shallow cryo-treated drills will be more economical for making short series of holes.•Deep cryo-treated drills will be more suitable in making long series of holes. To increase productivity and reduce production cost, cutting tool performance should be enhanced. When compared with conventional coated tools, cryogenic treatment enhances the life and quality of cutting tools. The mode of cryogenic treatment process affects the tool performance. Therefore, there is a need to reveal the appropriate mode of cryogenic treatment, which fits the requirement, by investigating its effect on the cutting tool performance. In this investigation, the performance of deep and shallow cryo-treated tungsten carbide drills has been evaluated and optimized based on minimum of: maximum thrust force, average surface roughness, circularity error and exit burr height while drilling 304 grade austenitic stainless steel which is a hard-to-machine material and widely used in industries. The significant contribution of this investigation is stating that shallow cryo-treated WC twist drills will be more economical for making small series of holes without compromising the hole quality whereas deep cryo-treated drills will be more suitable for making long series of holes.