中间相炭微球对多层钎焊金刚石砂轮电解修整 磨削性能的影响

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中图分类号：TG74；TG580.6DOI：10.3969/j.issn.1004-132X.2025.06.002 开放科学（资源服务）标识码（OSID）：

Influences of MCMBs on Electrolytic Dressing and Grinding Performances of Multi-layer Brazed Diamond Grinding Wheels

LIU Wei1，2 * CHANG Jiaqi1'² LI Boxin1，² YAN Can1，²DENG Zhaohui³WAN Linlin1，2

1.School of Mechanical Engineering，Hunan University of Science and Technology，Xiangtan， Hunan，411201 2.Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of

Difficult-to-cut Material，Hunan University of Science and Technology，Xiangtan，Hunan，411201 3.Institute of Manufacturing Engineering，Huaqiao University，Xiamen，Fujian，361021

Abstract： The oxide film of large particle size multi-layer brazed diamond grinding wheel had poor quality and insufficient thickness during electrolytic dressing，which led to poor grinding performances.MCMB were added to the abrasive layers to improve this situation. The effects of different MCMB contents on the performances of the grinding wheel and the electrolytic dressing grinding characteristics were investigated. The results show that MCMB may significantly improve the electrolytic film-forming ability of the grinding wheel， the maximum thickness of the oxide film is as 104μm ，and the compactnessand adhesion are improved. The ground surface morphology of the test groups containing MCMB has higher integrity and fewer fracture pits. Compared with the test groups without MCMB，the values of surface roughness Ra of the MCMB test groups with a volume fraction of 5% decrease by 29.8% when the workpiece speed is as 40mm/s and the grinding depth is as 15μm ，and the subsurface damage depth is reduced by 47.9% when the workpiece speed is as 30mm/s and the grinding depth is as 20μm ：

Key words： multi-layer brazed grinding wheel； electrolytic dressing grinding； mesocarbon mi-crobead（MCMB）；oxide film;subsurface damage

0 引言

磨削通常用于加工硬质合金、工程陶瓷、光学玻璃等难加工材料，砂轮对磨粒把持能力的强弱很大程度上决定了被磨削工件的表面质量[1]。（剩余13859字）