镁铝尖晶石的塑性域磨削

发布时间：2018-02-21 03:29

  本文关键词： 镁铝尖晶石 塑性域磨削 金刚石砂轮 表面粗糙度　出处：《光学精密工程》2017年04期 　论文类型：期刊论文

【摘要】：为了避免和减小镁铝尖晶石在研磨工艺中产生的亚表面损伤,研究了合理控制磨削参数,实现镁铝尖晶石塑性域磨削的方法。分析了镁铝尖晶石的脆塑转变机理,采用不同尺寸规格的金刚石砂轮磨粒和改变砂轮进给量等参数进行了大量实验,探索了镁铝尖晶石的塑性磨削条件及影响因素,实现了镁铝尖晶石的塑性域高精度磨削。采用VG401MKⅡ型超精密磨床和3000#金刚石砂轮,设定砂轮速度为20m/s,工件速度为0.3m/s,进给量为0.5~3μm/r进行了磨削实验。结果显示:当金刚石砂轮磨粒的平均尺寸小于8μm时可以实现镁铝尖晶石的塑性磨削,其表面粗糙度Ra可以达到2.291nm,透光率可提高17%。研究结果表明,砂轮的平均磨粒尺寸和砂轮进给量对镁铝尖晶石材料的表面加工质量影响很大,该结果为研究磨削高质量镁铝尖晶石表面提供了依据。
[Abstract]:In order to avoid and reduce the subsurface damage of magnesia-aluminum spinel in grinding process, the method of reasonably controlling grinding parameters to realize the plastic domain grinding of magnesia-aluminum-spinel was studied, and the mechanism of brittle plastic transition of magnesia-aluminum spinel was analyzed. A large number of experiments were carried out using diamond wheel abrasive particles of different sizes and changing the feed rate of grinding wheel. The plastic grinding conditions and influencing factors of magnesia-aluminum spinel were explored. The high precision grinding of magnesia-aluminum spinel in plastic domain is realized. The VG401MK 鈪，

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