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EFFECT OF LAP SURFACE PROFILE ON LAPPING EFFICIENCY

Chinese Journal of Aeronautics 1999年第2期12卷 53-58页

作者：左敦稳王珉南京航空航天大学机电工程系江苏南京 Kumamoto University 日本

To meet the requirements of improving the efficiency in lapping operat ion, the effect of lap surface profile on the efficiency is analyzed theoretical ly and an experimental study is carried out on lapping of Mn Zn ferrite. It is f ound that the profile of lap surface affects significantly the efficiency by mea ns of its capacity to keep loose grains and fixed grains during lapping, and tha t the efficiency can be increased by several times by using a lap with proper surface profile, while the same work surface roughness can be finally obtained.

关键词： lapping efficiency lap surface profile loose grain fixed grain ferrite

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Grinding Characteristics Of Directionally Aligned SiC Whisker Wheel - Comparison With A12O3 Fiber Wheel

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Journal of Donghua University(English Edition) 2003年第4期20卷 70-75页

作者：魏源迁山口胜美菊泽贤二洞口严中根正喜 School of Engineering Nagoya University Furo-cho Chikusa-ku Nagoya 464 - 8603 Japan Xebec Technology Company Ltd. 3-2-2 Kudan-minami Chiyoda-ku Tokyo102 Japan Toyota College of Technology Eisei-cho 2-1 Toyota-shi Aichi-ken 4 71 Japan Sumitomo Metal Industries Ltd. 4-5-33 Kitahama Osaka 541 -0041 Japan unique SiC whisker wheel was invented in which the whiskers were aligned normally to the grinding wheel surface. In this paper grindabilities of the SiC whisker wheel are investigated and compared with those of other wheels of SiC grains Al2O3 grains as well as Al2O3 long and short fibres which were also aligned normally to the grinding wheel surface respectively. The main research contents concern grinding characteristics of a directionally aligned SiC whisker wheel such as material-removal volume wheel-wear rates integrity of the ground surfaces grinding ratios and grinding efficiency. Furthermore grinding wheels of whiskers and fibres have a common disadvantage: they tend to load easily. The authors have proposed a simple method of loading-free grinding to overcome this propensity and investigate some related grinding characteristics under loading-free grinding conditions.

A unique SiC whisker wheel was invented,in which the whiskers were aligned normally to the grinding wheel *** this paper,grindabilities of the SiC whisker wheel are investigated and compared with those of other wheels of SiC grains,Al2O3 grains,as well as Al2O3 long and short fibres which were also aligned normally to the grinding wheel surface,*** main research contents concern grinding characteristics of a directionally aligned SiC whisker wheel such as material-removal volume,wheel-wear rates,integrity of the ground surfaces,grinding ratios and grinding ***,grinding wheels of whiskers and fibres have a common disadvantage:they tend to load *** authors have proposed a simple method of loading-free grinding to overcome this propensity and investigate some related grinding characteristics under loading-free grinding conditions.

关键词： Grinding Grinding wheel SiC whisker Al2O3 fiber Directional alignment loose grain Loading-free Grinding ratio Surface roughness

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