Effect of Gas Nitrocarburizing Process on Hardening of High Speed Tool Steel Grade SKH51

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Published: Dec 22, 2021
Keywords:
Gas Nitrocarburizing High Speed Tool Steel Retained Austenite

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Wanna Homjabok
Department of Materials Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakorn Ratchasima
Sirawich Keawdonree
Department of Materials Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakorn Ratchasima
Surasak Duadsanthia
Department of Materials Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakorn Ratchasima
Narongsak Thammachot
Department of Industrial Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakorn Ratchasima
Tanabodee Praditja
Thai Tohken Thermo Company Limited, Chon Buri
Nipon Taweejun
Thai Tohken Thermo Company Limited, Chon Buri

Abstract


In this study, effect of nitrocarburizing process on hardened and tempered high speed tool steel (SKH51) by difference heat treatment processes (tempering 2 cycles and 3 cycles before nitrocarburizing process) were studied. The results showed that nitrocarburizing process gave a higher surface hardness approximately 4.4 times compare to non-heat treatment or approximately 1.4 times compare to hardened and tempered specimen. In addition, the nitrocarburizing process can be used instead of a tempering process. Therefore, heat treatment process and the production cost can be reduced by nitrocarburizing process.


Article Details

Issue
Vol. 32 No. 1 (2022): January-March, 2022
Section
Engineering Research Articles

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