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water3033(金幣+150, 翻譯EPI+1):謝謝啦，翻譯的真好，除了個別專業(yè)詞，推薦中國期刊網(wǎng)的cnki翻譯助手，專業(yè)詞匯那里比較容易找。還有老兄你的眼光確實準(zhǔn)啊，就是畢業(yè)論文，不過我發(fā)上來的才是一半，另外一半以前寫小論文的時候自己翻了，呵呵，總之一句話，謝謝啦，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.
本人可是逐句翻譯的，累啊，呵呵，里面的專業(yè)詞匯可能有不準(zhǔn)確的（不過也都是我在網(wǎng)上搜索的大家使用過的詞匯），如有不滿意的請樓主自己修改，我只能保證語法是沒有問題的。 |
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