郑喜贵,龚胜,尹韶辉,叶冰.磁控微粉砂轮固化工艺对砂轮磨削性能的影响[J].表面技术,2017,46(10):76-81.
ZHENG Xi-gui,GONG Sheng,YIN Shao-hui,YE Bing.Effects of Curing Process for Magnetic Control Micro Powder Grinding Wheel on Grinding Performance[J].Surface Technology,2017,46(10):76-81 |
| 磁控微粉砂轮固化工艺对砂轮磨削性能的影响 |
| Effects of Curing Process for Magnetic Control Micro Powder Grinding Wheel on Grinding Performance |
| 投稿时间：2017-05-25 修订日期：2017-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.10.011 |
| 中文关键词: 超精密磨削 环形磁场控制 磨粒规则排布 微粉砂轮 固化工艺 磨削性能 |
| 英文关键词:ultra-precise grinding annular magnetic field control grain uniform distribution micro powder grinding wheel curing process grinding performance |
| 基金项目:国家自然科学基金（51675171） |
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| Author | Institution |
| ZHENG Xi-gui | Henan Universities Engineering Research Center for CNC Processing, Zhengzhou University of Science and Technology, Zhengzhou 450064, China |
| GONG Sheng | National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China |
| YIN Shao-hui | National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China |
| YE Bing | National Engineering Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China |
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| 中文摘要: |
| 目的 研究砂轮在固化过程中，固化温度和固化时间对砂轮磨削性能的影响。方法 通过测试两种固化工艺制备的砂轮的抗压强度、硬度以及其加工硬质合金YG8的磨削比、表面粗糙度、加工非球面的形状精度随固化温度的变化，来评价固化温度对磁控微粉砂轮磨削性能的影响。结果 砂轮的磨削性能与其固化温度、时间有直接关系。磨削比随着固化保温时间的增长呈先增长后下降的趋势。固化温度决定砂轮固化速率和砂轮对过度固化的敏感程度，170 ℃固化能使砂轮在较短时间达到最佳磨削性能，但是固化时间超过8 h时，其性能会迅速衰减。130 ℃固化有利于防止砂轮过度固化而造成性能急剧降低。通过对固化工艺的研究，170 ℃/5 h+130 ℃/5 h固化工艺下制备的砂轮磨削性能最佳，该砂轮磨削YG8得到最佳的面形精度为365 nm，最佳表面粗糙度为3 nm。结论 砂轮在固化过程中，固化温度与固化时间直接影响树脂的固化反应速率与固化程度，通过对固化工艺的实验研究，在本实验条件下得到了最优的固化工艺参数。 |
| 英文摘要: |
| The work aims to study effects of curing temperature and curing time on grinding performance during curing process of grinding wheel. The effects of curing temperature on grinding performance of magnetic control micro powder grinding wheel were evaluated by testing changes in compressive strength, hardness of grinding wheels prepared by adopting two curing processes, grinding ratio, surface roughness and form accuracy of processed cemented carbide YG8 as curing temperature changed. Grinding performance of grinding wheel had direct relation with its curing temperature and time. The grinding ratio tended to rise first then decline as the curing holding time prolonged. Curing rate of grinding wheel and its sensitivity to excessive curing were determined by curing temperature. Optimal grinding performance could be achieved quickly at the curing temperature of 170 ℃, but grinding performance declined rapidly as the curing time exceeded 8 h. Curing at 130 ℃ might prevent sharp degradation of grinding performance caused by over-curing. The grinding wheel exhibited optimal grinding performance provided with the curing process of 170 ℃/5 h+130 ℃/5 h. A mirror surface with optimal surface roughness of 3 nm in Ra and optimal form accuracy of 365 nm in PV was obtained by grinding YG8. In the curing process of grinding wheel, curing temperature and curing time directly affect curing reaction rate and curing degree of resin, optimal curing process parameters are obtained under the experimental condition based upon experimental study of curing process. |
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