电解-磁力复合研磨TA18钛合金管内表面研究
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摘要
为了改善TA18合金制造零部件的表面质量,降低其表面粗糙度,提出了一种高效率的电解-磁力复合研磨加工方法,采用电解的钝化作用辅助磁力研磨,对比了复合加工与单纯磁力研磨加工前后表面粗糙度与表面形貌的变化,通过单因素试验分析磁极转速、电解电压对表面质量的影响。结果表明:电解-磁力复合加工实现了对TA18管内表面的精密研磨,与单纯磁力研磨相比,经过50min加工,表面粗糙度由原始的0.9μm下降到0.08μm,残余应力有效降低,表面微观形貌得到明显改善,有效提高了工件疲劳强度。
In order to improve the surface quality of parts made of TA18 alloy,reduce the surface roughness,proposes an efficient electrolytic magnetic abrasive machining method,the passivation effect of magnetic abrasive assisted electrolysis,were compared before and after machining and simple magnetic abrasive machining surface roughness and surface morphology changes,by single factor test effect of rotational speed of magnetic pole,electrolytic voltage on surface quality. The results showthat the realization of the precision grinding of TA18 pipe inner surface of the electrolytic magnetic composite processing,compared with the pure magnetic abrasive,after 50 min processing,the surface roughness by the original 0. 9μm down to0. 08μm,effectively reduce the residual stress,surface morphology improved,effectively improving the fatigue strength of the workpiece.
In order to improve the surface quality of parts made of TA18 alloy,reduce the surface roughness,proposes an efficient electrolytic magnetic abrasive machining method,the passivation effect of magnetic abrasive assisted electrolysis,were compared before and after machining and simple magnetic abrasive machining surface roughness and surface morphology changes,by single factor test effect of rotational speed of magnetic pole,electrolytic voltage on surface quality. The results showthat the realization of the precision grinding of TA18 pipe inner surface of the electrolytic magnetic composite processing,compared with the pure magnetic abrasive,after 50 min processing,the surface roughness by the original 0. 9μm down to0. 08μm,effectively reduce the residual stress,surface morphology improved,effectively improving the fatigue strength of the workpiece.
引文
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[2]TK B JVINOD,Y Cylindrical.Electrochemical Magnetic Abrasive Machining of AISI-304 stainless steel[J].Materials and Manufacturing Processes,2013(28):449-456.
[3]任敬心,康仁科,吴小玲,等.钛合金的磨削烧伤和磨削裂纹[J].制造技术与机床,2000(10):40-42.
[4]辛磊,范文胜.磁力研磨优化钛合金管内表面光整度试验研究[J].现代矿业,2015(2):168-170.
[5]韩冰,邓超,陈燕.球形磁铁在弯管内表面磁力研磨中的应用[J].摩擦学学报,2013,33(6):565-570.
[6]廖明,韩冰,陈燕,等.钛合金管内表面的电化学磁力研磨复合光整试验[J].中国表面工程,2016,29(3):123-131.
[7]焦安源,全洪军,李宗泽,等.磁力研磨法光整外环槽的工艺参数研究[J].组合机床与自动化加工技术,2015(5):119-123.
[8]张琳,赵吉宾,李论.复杂曲面磁力研磨加工方法研究[J].组合机床与自动化加工技术,2014(1):36-40.
[9]Ferreira N G,Aramof E,Corat E J,et al.Residual stresses and erystalline quality of heavily boron-doped diamond films analysed by micro-Raman spectroscopy and X-ray diffraction[J].Carbon,2003,41(6):1301-1308.
[10]Meng Longhui,He Ning,Yang Yinfei,et al.Method for Measuring Residual Stresses Induced by Boring in Internal Surface of Tube and Its Validation with XRD Method[J].Transaction of Nanjing University of Aeronautics and Astronautics,2014,31(5):508-514.
[11]罗玉梅,任凤章,张伟,等.X射线法测量多晶体材料残余应力[J].材料导报,2014,28(6):112-114.
[12]陈燕,张耀明,邓超.V型磁铁在SUS304管内表面抛光中的应用[J].机械工程学报,2014,50(15):187-191.