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water3033(金币+150, 翻译EPI+1):谢谢啦，翻译的真好，除了个别专业词，推荐中国期刊网的cnki翻译助手，专业词汇那里比较容易找。还有老兄你的眼光确实准啊，就是毕业论文，不过我发上来的才是一半，另外一半以前写小论文的时候自己翻了，呵呵，总之一句话，谢谢啦，辛苦辛苦。 2010-10-26 10:53:44
Resin bond diamond grinding wheel was a rigid grinding tool, which was prepared with diamond as abrasive, resin as anchoring agent and proper filled material by a series of technical process including mix design, blending, hot compression moulding, curing and mechanical processing. The grinding wheel had advantages such as simple technology, low cost and easy to repire. Resin bond grinding tools had a certain resilience, which was in favor of improving the surface roughness of the workpiece, and was widely used in the grinding processing of hard and fragile materials, such as ceramics, glass and cemented carbide. But diamond was inert to chemical reagent such as acid, base and salt because of its excellent chemical stability at normal temperature, which resulted in the dissatisfactory bonding property between diamond and resin. At present though the normal treatment such as copperplating and nickelplating could improve the wetting quality between resin and diamond, it was mechanical chimeric and hard to form chemical bond, which would affect the self-sharpening performance of diamond grain. Now literatures on treating diamond grain with coupling agent were few, and the treatments adopted were singlely using coupling agent without the pretreatment of diamond. These processings had disadvantage such as unorderly treatment processing, unstable modification effect and unconspicuous performance improvement of grinding wheel.
In this paper, the diamond grain was pretreated with NaOH salution and modified the surface with silane coupling agent. The treating effect was characterized by Fourier Transform infrared spectroscopy (FTIR), wetting quality, impact strength and grinding performance. The results showed that the surface chemical composition of diamond was changed and absorption intensity of hydroxyl was decreased. The wetting quality of diamond was changed to hydrophobicity instead of hydrophilicity and the most obvious change was that the treated diamond kept together on the surface of the water instead of separateness to reduce the contact area with water. The impact strength and Rockwell hardness of resin strip were also studied. The results indicated that the treated diamond could enhance the impact strength of resin matrix but Rockwell hardness had no evident changes.
本人可是逐句翻译的，累啊，呵呵，里面的专业词汇可能有不准确的（不过也都是我在网上搜索的大家使用过的词汇），如有不满意的请楼主自己修改，我只能保证语法是没有问题的。 |
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一志愿北京科技材料科学与工程288分，求调剂
+14