金属切削过程中,刀具即从工件上切除多余的金属层,被切除的金属是经过弹性变形和塑性变形成为切屑的,变形所需要的功绝大部分转变为切削热。为了提高加工表面质量及降低切削温度,工业上常采用水溶液、切削油和乳化液作为冷却润滑液。但人们同时认识到:水溶液的润滑性能差,单纯的水更易使金属生锈而且某些有色金属 Metal cutting process, the tool that is removed from the workpiece on the extra metal layer, the metal is removed after the elastic deformation and plastic deformation of the chip, the deformation of the vast majority of work required to change into cutting heat. In order to improve the processing surface quality and reduce the cutting temperature, the industry often use aqueous solution, cutting oil and emulsion as a cooling lubricant. However, at the same time, people realize that the lubricating property of aqueous solution is poor, the pure water is more likely to rust the metal, and some non-ferrous metals