4.6 Article

Laser tempering based turning process for efficient machining of hardened AISI 52100 steel

Journal

JOURNAL OF MANUFACTURING PROCESSES
Volume 15, Issue 3, Pages 318-328

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2013.03.002

Keywords

Laser tempering; Hard turning; Hardened steel; Thermal softening; Tempered white layer; Tool wear

Funding

  1. The Timken Company, Canton, OH, USA

Ask authors/readers for more resources

Cost-effective machining of hardened steel components such as a large wind turbine bearing has traditionally posed a significant challenge. This paper presents an approach to machine hardened steel parts efficiently at higher material removal rates and lower tooling cost. The approach involves a two-step process consisting of laser tempering of the hardened workpiece surface followed by conventional machining at higher material removal rates with lower cost ceramic tools to efficiently remove the tempered material. The laser scanning parameters that yield the highest depth of tempered layer are obtained from a kinetic phase change model. Machining experiments are performed to demonstrate the possibility of higher material removal rates and improved tool wear behavior compared to the conventional hard turning process. Tool wear performance, cutting forces, and surface finish of Cubic Boron Nitride (CBN) tools as well as low cost ceramic tools are compared in machining of hardened AISI 52100 steel (similar to 63 HRC). In addition, cutting forces and surface finish are compared for the laser tempering based turning and conventional hard turning processes. Experimental results show the potential benefits of the laser tempering based turning process over the conventional hard turning process. (C) 2013 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available