Lapping performance of fixed silicon-based agglomerated diamond abrasive pad

被引：1
|
作者：
Sheng X. [1 ]
Zhu Y. [1 ]
Ren C. [1 ]
Ren Z. [1 ]
Dong Y. [1 ]
机构：
[1] Jiangsu Key Laboratory of Precision and Micro-manufacturing Technology, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2023年 / 31卷 / 06期
关键词：
agglomerated diamond abrasives; fixed abrasives pads; high-efficiency lapping; silicon-based bind;
D O I：
10.37188/OPE.20233106.0839
中图分类号：
学科分类号：
摘要：
Typically，abrasive microfracture is a predominant factor affecting fixed abrasive（FA）pad performance. Moreover，the compositions and bonding strengths of the binder determine its microfracture behavior. To realize a highly efficient lapping process，the preparation of silicon-based agglomerated diamond（SAD）abrasives and the effect of the binder composition on lapping performance were investigated. SAD abrasives with various silicon content binders were prepared at 840 ℃，880 ℃，and 920 ℃，and their micromorphologies were observed using a scanning electron microscope. Lapping tests were conducted on a K9 specimen，and the lapping performance of the aforementioned FA pads at loads of 7,14，and 21 kPa was compared. The higher the sintering temperature and silicon content of the binder，the more uniform the binder filling，the more reasonable the pore distribution，and the more evident the microbreakage during the SAD grinding process. Under the 21 kPa load，the material removal rate（MRR）of the FA pad with SAD abrasives possessing the highest silicon content and sintered at 920 ℃ was the highest reaching 63.32 μm/min，while the Ra was approximately 0.515 μm. Under the 7 kPa lapping load，the average surface roughness of a workpiece lapped by an FA pad with SAD abrasives possessing the lowest silicon content and sintered at 920 ℃ was the lowest reaching approximately 0. 182 μm，while the MRR was 7.89 μm/min. Efficient lapping of K9 optical glass can be achieved using a consolidated SAD abrasive pad. © 2023 Chinese Academy of Sciences. All rights reserved.
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页码：839 / 848
页数：9
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