东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2016, Vol. 37 ›› Issue (2): 218-222.DOI: 10.12068/j.issn.1005-3026.2016.02.015

• 机械工程 • 上一篇    下一篇

高温合金K445微磨削表面质量实验研究

周云光， 巩亚东， 温雪龙， 朱宗孝   

  1. (东北大学 机械工程与自动化学院， 辽宁 沈阳110819)
  • 收稿日期:2014-12-23 修回日期:2014-12-23 出版日期:2016-02-15 发布日期:2016-02-18
  • 通讯作者: 周云光
  • 作者简介:周云光(1986-)，男，河北秦皇岛人，东北大学博士研究生； 巩亚东(1958-)，男，辽宁本溪人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51375082).

Experimental Study on Surface Quality in Micro-grinding of Superalloy K445

ZHOU Yun-guang， GONG Ya-dong， WEN Xue-long， ZHU Zong-xiao   

  1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China.
  • Received:2014-12-23 Revised:2014-12-23 Online:2016-02-15 Published:2016-02-18
  • Contact: ZHOU Yun-guang
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摘要： 为探究镍基高温合金的微尺度磨削表面质量，首先采用0.9mm磨头直径、500#磨粒的微磨棒对典型镍基高温合金材料K445进行微尺度磨削三因素五水平正交试验.通过极差分析找出影响微磨削表面质量的主次因素:进给速度的影响最大、主轴转速次之、磨削深度的影响最小；优化出了微磨削K445的理想工艺组合，即进给速度f○m=20μm/s、磨削深度a○p=6μm、主轴转速v○g=58kr/min时，加工表面粗糙度最小，R○a为462nm.其次通过单因素实验总结出了进给速度、磨削深度、主轴转速及微磨棒悬伸量对K445磨削表面质量的影响规律，并对其原因进行了深入分析，使之为镍基高温合金微小零件的加工提供重要的理论依据.

关键词: 微磨削, 镍基高温合金, 磨削参量, 表面粗糙度, K445

Abstract: To explore the micro-grinding surface quality of nickel-based superalloy， orthogonal experiments of three factors and five levels on nickel-based superalloy K445 were performed using a micro-grinding tool with #500 grains and 0.9mm diameter. The influencing factors on the surface roughness were clarified according to the range analysis: the feed rate was a dominant factor， followed by spindle speed and grinding depth. The optimized parameters combination was as follows: feed rate f○m=20μm/s， the grinding depth a○p=6μm and the feed speed v○g=58kr/min， on which the surface roughness R○a=462nm， being minimum. Then， how the factors such as spindle speed， feed speed， grinding depth and overhanging length affected grinding surface quality was analyzed through a single-factor experiment so as to provide important theoretical basis for fabricating micro nickel-based superalloy workpiece.

Key words: micro-grinding, nickel-based superalloy, grinding parameter, surface roughness;K445

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