Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (1): 86-90.DOI: 10.12068/j.issn.1005-3026.2015.01.019

• Mechanical Engineering • Previous Articles     Next Articles

Study of the Surface Hardening in Pre-stressed Hardening Grinding Combined Machining

XIU Shi-chao1, BAI Bin1,2, ZHANG Xiu-ming1, LIU Ming-he1   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Department of Mechanical Engineering, Shenyang Institute of Engineering, Shenyang 110136, China.
  • Received:2013-12-09 Revised:2013-12-09 Online:2015-01-15 Published:2014-11-07
  • Contact: BAI Bin
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Abstract: Blending the principle of pre-stressed grinding and grinding hardening,an pre-stressed hardening grinding approach was presented. The microstructure, distribution characteristics, thickness and hardness of the grinding hardening layer were studied. The results showed that under the same condition, the microstructure and distribution characteristics of grinding hardening layer in pre-stressed hardening grinding was the same as in grinding hardening and the microstructure was the subcritical quenching. Pre-stressed hardening grinding process showed more restraint effect on grinding heat. The hardening layer thickness and hardness of pre-stressed hardening grinding specimens were slightly below the grinding hardening specimens, but the surface hardness was able to reach the general complete quenching state. The research provides the experiments and principle basis for pre-stressed hardening grinding process development and work-piece surface quality control.

Key words: pre-stress, grinding, combined machining, hardening layer, microstructure

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