Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Case Study of the Effect of Precoating on the Decarburization of the Surface Layer of Forged Parts during the Hot Die Forging Process

Version 1 : Received: 9 December 2020 / Approved: 10 December 2020 / Online: 10 December 2020 (10:25:38 CET)

A peer-reviewed article of this Preprint also exists.

Widomski, P.; Zwierzchowski, M.; Barełkowski, A.; Tympalski, M. Case Study of the Effect of Precoating on the Decarburization of the Surface Layer of Forged Parts during the Hot Die Forging Process. Materials 2021, 14, 422. Widomski, P.; Zwierzchowski, M.; Barełkowski, A.; Tympalski, M. Case Study of the Effect of Precoating on the Decarburization of the Surface Layer of Forged Parts during the Hot Die Forging Process. Materials 2021, 14, 422.

Journal reference: Materials 2021, 14, 422
DOI: 10.3390/ma14020422

Abstract

Based on tests results, the possibility of using this solution in the technique of industrial hot forging was evaluated. The results of laboratory tests have confirmed that lubrication of metal pieces is sufficient as well as proved it to be effective in reducing decarburization of the surface layer. Research works conducted in an induction heater showed differences in decarburization depending on a substance and concentration of lubricants that were used. These differences become more apparent when observing the surface layer of the forged parts. Results indicate that decarburization may be reduced to a minimum when we use Bonderite product in a concentration of 66% and 50%. Another lubricant, Berulit 913, may also be used. However, due to burning graphite in high temperatures, reduction of decarburization goes only as far as half of the thickness of the decarbonized layer. Condursal has no significant effect; nevertheless, it protects over the induction heating stage.

Subject Areas

decarburization; precoating; hot forging

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