LIU Dongdong,HAN Bing*,CHEN Yan,et al.Research on Application of Magnetic Abrasive Particle Aided Magnetic Needles Grinding[J].Plating & Finishing,2019,(12):14-19.[doi:10.3969/j.issn.1001-3849.2019.12.004]
超声磁粒研磨Al 6061管内表面光整试验研究
- Title:
- Research on Application of Magnetic Abrasive Particle Aided Magnetic Needles Grinding
- Keywords:
- aluminum alloy tube; oscillator frequency; auxiliary magnetic pole; magnetic field gradient; surface roughness
- 文献标志码:
- A
- 摘要:
- 以提高铝合金管内表面光洁度和加工效率为指标。在传统磁粒研磨的基础上添加辅助磁极和超声波复合的磁粒研磨装置,研究辅助磁极开槽与未开槽磁极及不同振子频率下的光整加工对管内表面的影响。在超声复合开槽磁极的装置中,选取17 kHz、20 kHz和23 kHz三种不同的振子频率进行实验研究,在振子频率为17 kHz、23 kHz时,研磨60 min,铝合金管内表面粗糙度值由原来0.60 μm降至0.17 μm、0.20 μm,振子频率为20 kHz时,研磨60 min ,铝合金管内表面粗糙值由原来0.60 μm降至0.08 μm。在振子频率为20 kHz下,未开槽辅助磁极研磨光整60 min后,铝合金管内表面的粗糙度值由原来0.60 μm降至0.13 μm,开槽辅助磁极研磨光整60 min,铝合金管内表面的粗糙度值由原来0.60 μm降至0.08 μm。在振子频率为20 kHz和开槽磁极最佳条件下,超声磁粒研磨铝合金管内表面粗糙度值能达到最低为0.08 μm,且开槽磁极的磁场梯度相对未开槽磁极较大且有效研磨区域增大一倍,这使磨料粒子在研磨过程中更新的较为迅速,磨料利用率和研磨效率得到提高,研磨后表面纹理得到全部去除,表面均匀性达到最好。
- Abstract:
- In order to improve the surface finish and processing efficiency of aluminium alloy tubes, on the basis of traditional magnetic particle grinding, an auxiliary magnetic pole and ultrasonic composite magnetic particle grinding device were added to study the effect of auxiliary magnetic pole grooving and non-grooved magnetic pole and polishing at different oscillator frequencies on the inner surface of the tube. Three different oscillator frequencies, 17 kHz, 20 kHz and 23 kHz, were selected for experimental study in the ultrasonic composite slotted pole device. When the oscillator frequencies were 17 kHz and 23 kHz, the grinding time was 60 min, the surface roughness of aluminium alloy tube decreased from 0.60 ?m to 0.17 ?m and 0.20 ?m. When the oscillator frequencies were 20 kHz, the grinding time was 60 min, the surface roughness of aluminium alloy tube decreased from 0.60 ?m to 0.08 ?m. At the oscillator frequency of 20 kHz, the surface roughness of aluminium alloy tube decreased from 0.60 ?m to 0.13 ?m after 60 min polishing with uncut auxiliary magnetic pole, and the surface roughness of aluminium alloy tube decreased from 0.60 ?m to 0.08 ?m after 60 min polishing with slotted auxiliary magnetic pole. Under the optimum conditions of oscillator frequency of 20 kHz and slotted pole, the surface roughness of aluminium alloy tube can reach the lowest value of 0.08 ?m, and the magnetic field gradient of slotted pole was bigger than that of non-slotted pole and the effective grinding area was doubled, which made the abrasive particles renew rapidly in the grinding process, the utilization rate of abrasive and grinding efficiency were improved, and the surface after grinding was improved. The texture was removed completely and the surface uniformity was the best.
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备注/Memo
收稿日期: 2019-03-19;修回日期: 2019-04-18
通信作者: 韩冰,email: hanb75@126.com
基金项目: 国家自然科学基金项目(51105187)