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RT，如个别词汇属于专业范畴，不好翻译的话请留言，我会提供的，谢谢啦，最近实在太忙了。 金刚石树脂基砂轮是以金刚石为磨料，以树脂为结合剂，加入适当的填充材料，通过配制、混合、热压成型、固化、机械加工等工艺过程制成的具有一定刚性的磨削工具。其具有制造工艺简单，成本低，砂轮易修整等优点，而且树脂基磨具具有一定的弹性，有利于改善工件表面的粗糙度，被广泛应用于陶瓷、玻璃、硬质合金等硬脆材料的磨削加工中。但由于金刚石的化学稳定性极好，在常温下，金刚石对酸、碱、盐等化学试剂都表现为惰性。因此，树脂与金刚石颗粒之间的结合性能不理想。目前常用的处理方法如镀铜、镀镍等虽然能改善树脂与金刚石颗粒之间的浸润性，但多是机械嵌合，难以形成化学键的结合，还会影响金刚石磨粒的自锐性；而且关于偶联剂处理金刚石磨料的文献所见较少，文献中所采用的处理方法均为单独使用偶联剂处理，未对金刚石进行预处理，处理工艺杂乱，改性效果不稳定，对砂轮的性能提升不明显。 本文中采用NaOH溶液对金刚石磨料进行了预处理，然后用硅烷偶联剂进行表面改性，通过FTIR，润湿性，冲击强度，磨削性能等对处理效果进行表征，发现经过处理后，金刚石表面的化学成分发生改变，羟基吸收峰的强度减小；金刚石的润湿性也发生了变化，由亲水变为疏水，最明显的是为了减小与水的接触面积，经过处理的金刚石在水面上由分散状态变为聚拢状态；通过对树脂样条冲击强度和洛氏硬度的测试发现，处理后的金刚石对树脂基体的冲击强度有增强作用，但洛氏硬度无明显变化。 |
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alsjiao
至尊木虫 (著名写手)
- 翻译EPI: 1
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- 帖子: 1492
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- 虫号: 577464
- 注册: 2008-06-23
- 性别: GG
- 专业: 电化学
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Diamond resin grinding wheel is a diamond abrasive to resin binder filled with suitable material, through the preparation, mixing, hot pressing, curing, machining and other process made of a certain rigidity of the grinding tool. Qi with the manufacturing process is simple, low cost, wheel easy to repair, etc., and resin-based abrasive has a certain flexibility, improves the surface roughness, is widely used in ceramics, glass, carbide and other hard and brittle materials grinding. However, due to excellent chemical stability of diamond at room temperature, the diamond of acid, alkali, salt and other chemicals have shown to be inert. Therefore, the resin and binding properties between the diamond particles are not ideal. The commonly used treatments such as copper, nickel, etc. Although the resin can improve the wettability between diamond grains, but mostly mechanical chimera, a combination difficult to form chemical bonds, but will also affect the self-sharpening diamond grits; and coupling agents on the literature of diamond abrasive saw less literature approach used coupling agents are used alone, without pretreatment of the diamond, treatment process messy, unstable modification effect on the grinding wheel performance is not obvious. NaOH solution used in this article were pretreated diamond abrasive, and surface modification with silane coupling agent, by FTIR, wettability, impact strength, such as grinding performance was characterized on the treatment effect was found after treatment, the diamond surface the chemical composition changes, reducing the intensity of hydroxyl absorption peak; diamond wetting is also changed from hydrophilic into hydrophobic, the most obvious is to reduce the contact area with water, treated diamonds on the water gather in the dispersed state to state; spline through the impact on resin strength and Rockwell hardness tests showed that after the diamond on the impact strength of the resin matrix can enhance the effect, but no significant change in Rockwell hardness. |
2楼2010-10-24 18:46:39
3楼2010-10-24 18:56:24
yunyanwuhen
木虫 (正式写手)
- 翻译EPI: 21
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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
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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。 |
4楼2010-10-25 19:47:20