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本文研究了切削液对光学玻璃SF6在金刚石切削加工中可加工性的影响.首先对SF6进行了维氏压痕试验,并分析切削液(处理液)浸泡试件前后,SF6材料的硬度及断裂韧性的变化.进而进行了SF6试件的变切深刻划试验,采用共聚焦显微镜检测SF6材料的临界切削深度,试验结果表明,与未采用切削液的刻划相比,以碳酸钠为切削液的刻划使SF6的临界切削深度增加了35.6%;最后以压痕及刻划试验的结果为基础,进行了SF6试件的金刚石切削加工试验,由原子力显微镜(AFM)检测可知有切削液作用的切削试验中获得工件的表面粗糙度值比无切削液作用试验中的粗糙度值降低超过50%.试验结果表明,以碳酸钠溶液为切削液可显著改善光学玻璃SF6的可加工性.
In this paper, the influence of cutting fluid on the workability of optical glass SF6 in diamond cutting was studied.Vickers indentation test was carried out on SF6 first, and the hardness and fracture of SF6 before and after the cutting fluid (treatment fluid) The change of the toughness of the SF6 specimen was further studied, and the critical depth of cut of the SF6 material was measured by confocal microscopy. The experimental results show that compared with the scoring without using cutting fluid, The critical cutting depth of SF6 increased by 35.6%. Finally, based on the result of indentation and scoring test, the diamond cutting test of SF6 specimen was carried out. The cutting fluid was detected by atomic force microscope (AFM) Of the cutting test to obtain the workpiece surface roughness value than the no-cutting fluid effect of the test to reduce the roughness value of more than 50% .Experimental results show that sodium carbonate solution as a cutting fluid can significantly improve the optical glass SF6 machinability.