固结磨料研磨镁铝尖晶石的平均切深和亚表面损伤行为

发布时间：2018-03-01 17:38

本文关键词： 镁铝尖晶石亚表面损伤研磨固结磨料　出处：《硅酸盐学报》2017年03期 　论文类型：期刊论文

【摘要】：根据接触力学原理建立了固结磨料研磨的平均切深模型,估算了不同粒径磨料作用下平均切深。依据磨粒平均切深值,采用离散元法对镁铝尖晶石固结磨料研抛的过程进行了模拟,并以此预测了固结磨料研磨条件下工件的亚表面损伤深度。采用角度抛光方法对亚表面损伤层深度的预测值进行了验证。结果表明:W5FAP研磨下工件亚表面损伤层深度的预测值为1.32μm、实测值为1.37μm;W14FAP研磨下的预测值为3.93 m,实测值为4.56μm;W50FAP研磨下的预测值为9.07μm,实测值为9.12μm;离散法的亚表面损伤层的预测结果与实测结果基本一致,验证了该方法的可靠性。
[Abstract]:According to the contact mechanics principle, the average cutting depth model of consolidation abrasive grinding is established, and the average cutting depth under the action of different particle sizes is estimated. A discrete element method was used to simulate the polishing process of magnesia-aluminum-spinel bonded abrasives. The subsurface damage depth of workpiece was predicted under the condition of consolidation abrasive grinding. The prediction value of subsurface damage layer depth was verified by angle polishing method. The results show that the depth of sub-surface damage layer of workpiece under W5FAP grinding is lower than that of workpiece. The predicted value of degree is 1.32 渭 m, the predicted value of measured value is 1.37 渭 m W14FAP is 3.93 m, the predicted value of measured value is 4.56 渭 m W50FAP grinding is 9.07 渭 m, and the measured value is 9.12 渭 m. The reliability of the method is verified.
【作者单位】：南京航空航天大学机电学院;河南科技学院机电学院;
【基金】：航空科学基金(2014ZE52055) 国家自然科学基金(51675276) 河南省高等学校重点科研项目(15A460004) 江苏省研究生培养创新工程(KYLX_0229) 中央高校基本科研业务费专项资金江苏省精密与微细制造技术重点实验室开放基金资助
【分类号】：TQ164.4

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