中国机械工程

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预应力淬硬磨削工件表面层质量试验研究

白斌1,2;修世超1;张修铭1   

  1. 1.东北大学,沈阳,110819
    2.沈阳工程学院,沈阳,110136
  • 出版日期:2016-06-25 发布日期:2016-06-24
  • 基金资助:
    国家自然科学基金资助项目(51375083);沈阳市科技计划资助项目(F13-316-1-59) 

Experimental Study on Surface Layer Quality of Prestressed Grindhardening Parts

Bai Bin1, 2;Xiu Shichao 1;Zhang Xiuming1   

  1. 1.Northeastern University,Shenyang,110819
    2.Shenyang Institute of Engineering,Shenyang,110136
  • Online:2016-06-25 Published:2016-06-24
  • Supported by:

摘要: 从抗疲劳制造与绿色制造的观念出发,融合预应力磨削与磨削淬硬技术原理,提出了将残余应力控制、表面淬火及磨削三者集成于一体的预应力淬硬磨削技术理论与方法。对45钢试件进行了预应力淬硬磨削加工试验,以工件淬硬层表面残余应力、硬度及粗糙度为研究对象,与相同条件下的磨削淬硬工艺试验结果进行了对比分析。结果表明:预应力淬硬磨削工艺可增大工件表面残余压应力,减小拉应力,其工件表面残余应力状态优于磨削淬硬工艺;预应力淬硬磨削工件表面硬度可以达到基体硬度的3倍左右,而工件表面粗糙度小于磨削淬硬工艺工件表面粗糙度。因此,在相同的加工条件下,预应力淬硬磨削工艺比磨削淬硬工艺具有更好的抗疲劳性、耐腐蚀性及表面完整性。

关键词: 预应力, 淬硬磨削, 表面层质量, 复合加工

Abstract: Starting from the antifatigue manufacturing and green manufacturing concepts, fusing the principles of prestressed grinding and grindhardening technology, an prestressed grindhardening approach integrated with residual stress control, surface quenching and grinding was presented. Based on the prestressed grindhardening test of 45 steel, the residual stress, hardness and roughness of the workpiece grindhardening layer surface were studied and analyzed. Comparing with the results for the grindhardening process under the same conditions. the results are as follows: the residual stress status of the prestressed grindhardening workpieces are better than that of grindhardening specimens, revealing that prestressed grindhardening process has significant effects on the drop of residual stretch stress and increase of residual press stress; the surface hardness of prestressed grindhardening workpiece is almost three times of original hardness, meanwhile, prestressed grindhardening workpieces can achieve lower roughness than that of grindhardening workpieces. Therefore, the fatigue resistance, corrosion resistance and surface integrity of prestressed grindhardening workpieces are better than that of the grinding hardening workpieces.

Key words: prestress, grindhardening, surface layer quality, combined machining

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