| 引用本文: | 丁浩东,张国富,焦安源,韩冰.磁粒研磨镍基高温合金群孔切出毛刺的研究∗[J].中国表面工程,2021,34(4):82~89 |
| DING Haodong,ZHANG Guofu,JIAO Anyuan,HAN Bing.Study on Exit Burrs in Group Holes of Nickel-based Superalloy by Magnetic Abrasive Finishing[J].China Surface Engineering,2021,34(4):82~89 |
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| 摘要: |
| 为解决镍基高温合金 GH3128 群孔切出毛刺难去除的问题,基于磁粒研磨法开展毛刺去除试验研究。 对镍基高温合金 GH3128 钻孔加工后孔缘毛刺进行分类,基于磁粒研磨法分析典型毛刺去除机理,并提出群孔毛刺去除的研磨轨迹和磁极形状初步方案。 开展磁粒研磨群孔试验研究,分析主轴转速和磨粒平均粒径对切出毛刺去除的影响。 结果表明:在主轴转速为 1 500 r/ min、磁性磨料平均粒径 250 μm、进给速度 2 mm/ s、磁性磨粒填充量 30 g、加工间隙 2 mm 的加工条件下,研磨 40 min 后,群孔切出毛刺平均高度由原始的 141 μm 降至 20. 5 μm,毛刺的平均宽度从原始 350 μm 降至 163 μm。 规划研磨轨迹、磁极开矩形槽以及优化研磨参数的方法,使镍基高温合金 GH3128 群孔切出毛刺得到了很好的去除,此加工方案可为群孔切出毛刺的去除提供参考。 |
| 关键词: 磁粒研磨 磁极 镍基高温合金 孔 毛刺去除 |
| DOI：10.11933/j.issn.1007-9289.20210331004 |
| 分类号:TG176;TB114 |
| 基金项目:辽宁省自然科学基金 (2019-ZD-0029)和辽宁科技大学骨干教师(601011507-32) 资助项目 |
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| Study on Exit Burrs in Group Holes of Nickel-based Superalloy by Magnetic Abrasive Finishing |
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DING Haodong1, ZHANG Guofu1, JIAO Anyuan2, HAN Bing1
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1.School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan 114051 , China;2.School of Applied Technology, University of Science and Technology Liaoning, Anshan 114051 , China
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| Abstract: |
| In order to solve the problem of difficult removal of the exit burrs of the nickel-based superalloy GH3128 group holes, an experimental study on burr removal was carried out based on the magnetic abrasive finishing( MAF) process. The exit burrs after drilling in the nickel-based superalloy GH3128 were classified, the removal mechanism of typical burr was analyzed based on the MAF process, and a preliminary burr removal plan of the group holes for the grinding trajectory and shape of magnetic pole was proposed. The experimental study of the group holes was carried out by use of magnetic abrasive, and the effects of spindle speed and average abrasives size on the removal of exit burrs were analyzed. The results show that as the spindle speed is 1 500 r/ min, the average abrasives size is 250 μm, the feed rate is 2 mm / s, the filling amount of abrasives is 30 g, and the machining gap is 2 mm, after 40 minutes of grinding, the average height of the exit burrs from the group holes decreased from the original 141 μm to 20. 5 μm,and the average width of the exit burrs decreased from the original 350 μm to 163 μm. According to the planning grinding trajectory, machining the rectangular slot on the magnetic pole and optimizing the grinding parameters, the exit burrs in group holes of the nickel-based superalloy GH3128 are well removed. The processing scheme provides a novel reference for the removal of exit burrs in group holes. |
| Key words: magnetic abrasive finishing magnetic pole nickel-based superalloy hole burr removal |
