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Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 945657, 7 pages
http://dx.doi.org/10.1155/2013/945657
Research Article

Effects of Deep Cryogenic Treatment on Wear Mechanisms and Microthermal Expansion for the Material of Drive Elements

1Department of Mechanical Engineering, Kun Shan University, Tainan 710, Taiwan
2Department of Power Mechanical Engineering, National Formosa University, Yunlin 632, Taiwan
3Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung 840, Taiwan
4Hiwin Technologies Corp., Taichung 40707, Taiwan

Received 15 September 2013; Accepted 2 November 2013

Academic Editor: Shoou-Jinn Chang

Copyright © 2013 Yuh-Ping Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

By the composite heat treatments, the strength and the surface hardness of the materials of drive elements can be improved. Moreover, the high accurate and capable machines can be obtained. For the numerous composite heat treatments, the deep cryogenic treatment has been used widely for the purpose of low thermal expansion in the industry. Therefore, this paper is further to investigate the low friction, wear resistance, and low thermal expansion for the carburizing steels of drive elements with deep cryogenic treatment. According to the experimental results, martensitic transformation occurred after the deep cryogenic treatment. The effects of deep cryogenic treatment on wear mechanisms are significant. The shape of wear particles changes from slip tongue to smooth stratification. Moreover, the surface magnetization is smaller for the case of Carburizing-Deep cryogenic treatment. Hence, the wear mechanism becomes simple. Besides, the thermal expansion is significantly smaller for the case of Carburizing-Deep cryogenic treatment.