An investigation into the grindability of additively manufactured 42CrMo4 steel
Journal article, 2024

This study investigates post-processing of additively manufactured (AM) low-alloy 42CrMo4 steel (AISI 4140) produced by powder bed fusion – laser beam (PBF-LB). While the PBF-LB process produces tempered martensite by in-situ heat-treatment, resulting in superior mechanical properties, finishing by grinding remains critical for use in precision components such as automotive gears. The grindability of the AM material is compared to conventionally produced steel and reveals comparable results to most of the grindability criteria tested. However, higher wheel wear is observed when grinding the AM material. This is likely due to the lack of machinability-enhancing inclusion treatment common in conventional steelmaking.

Grindability

Grinding

Additive manufacturing

Author

Philipp Hoier

Chalmers, Industrial and Materials Science, Materials and manufacture

Deepa Kareepadath Santhosh

University of Ljubljana

Eduard Hryha

Chalmers, Industrial and Materials Science, Materials and manufacture

Peter Krajnik

Chalmers, Industrial and Materials Science, Materials and manufacture

CIRP Annals - Manufacturing Technology

0007-8506 (ISSN) 17260604 (eISSN)

Vol. 73 1 257-260

Subject Categories

Tribology

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials

DOI

10.1016/j.cirp.2024.04.039

More information

Latest update

8/8/2024 1