基于长碳链醇和卤代烃的陶瓷磨削液的磨削特性及作用机理

Study on Mechanism and Characteristics of Grinding Fluid Made by Long Carbon Alcohols and Halogenated Hydrocarbon Compositions Used for Ceramic Grinding

以磨削液的第一类性能作为主要评价指标,对长碳链醇和卤代烃(CCl4)组成的多种配方进行了切入式磨削效率试验。结果表明,这两种有机物及其多种复配配方可以大幅提高氮化硅陶瓷磨削时的材料去除率。通过红外光谱测试发现,醇类磨削液与陶瓷间润滑膜的结合方式以化学吸附为主,并在摩擦高温条件下产生了具有良好减摩作用的烷氧基硅或聚烷氧基硅。卤代烃的加入可以进一步使磨削液具有良好的极压性能,并提高磨削效率。此外,首次引入质量热容作为分析手段,对使用上述磨削液时陶瓷材料去除率的影响因素进行了探讨。结果表明,氮化硅陶瓷磨削时的材料去除率随着热容的增大而提高。

The experiments, judged by the primacy characteristics of the grinding fluids were carried out for the long chain alcohol and the halogenated hydrocarbon compositions. The results show that two kinds of organic substance and the compounds which include both of them can enhance efficiency of the engineering ceramic grinding greatly. The infrared spectrum testing shows that alcohol soaking on the ceramics mainly formed interface chemical reaction adsorption membrane. And under conditions of the high temperature and high pressure, alcohol rubs with ceramics to produce the fric don-polymer which are attributed to the excellent friction and wear reduction. When adding with the halogenated hydrocarbon compositions, the grinding fluids possess extreme pressure property which can lubricate surface of the ceramics sufficiently and arise the efficiency further. Moreover, the specific heat was studied for the first time. As a result, the greater the specific heat is, the higher machining efficiency will be.