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    190404-磁性磨料和磨粒相粒径对磁力研磨效率的影响

       作者:姜林志,张桂香,等    单位:山东理工大学机械工程学院    日期:2019-03-01     浏览:116    评论:0    
    提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2019.04.004磁性磨料和磨粒相粒径对磁力研磨效率的影响姜林志,张

    中文核心期刊,中国科技核心期刊!


    DOI: 10.19289/j.1004-227x.2019.04.004

    磁性磨料和磨粒相粒径对磁力研磨效率的影响

    姜林志,张桂香*,秦璞,梁久平,滕潇,孙广志(山东理工大学机械工程学院,山东 淄博 255049)

    摘要:按照逐级研磨思路,采用目数和磨粒相直径不同的磁性磨料(MAP)对304 不锈钢进行磁力研磨光整加工(MAF),工艺条件为:磁极转速1 000 r/min,加工间隙2 mm,磁感应强度1.2 T,磨料填充量2 g。依次采用磨料目数与磨粒相粒径为50 ~ 80 目/W40、80 ~ 120 目/W40、120 ~ 200 目/W7、200 ~ 300 目/W7 的磁性磨料研磨工件2、2、3 和5 min(总研磨时间为12 min),工件表面粗糙度由初始的0.646 μm 降至0.021 μm,材料去除?#35838;?2.3 mg。而采用200 ~ 300 目、磨粒相粒径为W7 的单一磁性磨料研磨工件时,要降?#26009;?#21516;的表面粗糙度耗时30 min。因此,合理选用不同规格的磁性磨料对工件进行逐级研磨能大幅提升研磨效率,使工件表面质量在短时间内就得到明显改善。

    关键词:磁力光整加工;磁性磨料;磨粒相;粒径;表面粗糙度;材料去除量

    中图分类号:TG580.68 

    文献标志码:A 

    文章编号:1004 – 227X (2019) 04 – 0157 – 04

    Effects of particle size and core size of magnetic abrasive on efficiency of magnetic abrasive finishing// JIANG Lin-zhi, ZHANG Gui-xiang*, QIN Pu, LIANG Jiu-ping, TENG Xiao, SUN Guang-zhi

    Abstract: Magnetic abrasive finishing (MAF) of 304 stainless steel was conducted using magnetic abrasive particles (MAP) with different mesh number and core sizes based on the ideas of stepwise grinding under the following conditions: rotation rate of magnetic pole 1 000 r/min, magnetic induction 1.2 T, machining gap 2 mm, and abrasive amount 2 g. After being ground with magnetic abrasive with mesh number and core size of 50-80 mesh/W40, 80-120 mesh/W40, 120-200 mesh/W7,and 200-300 mesh/W7 step by step for 2, 2, 3, and 5 min respectively (total time 12 min), the surface roughness of workpiece was reduced from 0.646 μm initially to 0.021 μm finally, and the material removal was 42.3 mg. While it took 30 min for grinding with single 200-300 mesh/W7 MAP to the same roughness. Using different specifications of MAP suitably step by step improves the grinding efficiency and the surface quality of workpiece in a short time.

    Keywords: magnetic abrasive finishing; magnetic abrasive; particle size; surface roughness; material removal

    First-author’s address: School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China

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