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切削油是切削加工不可缺少的润滑冷却油,使用切削油目的是为了提高刀具的耐用度,改善加工零件的质量,减少切削力和功率,以保证切屑易于从切削区冲走。根据加工材料、切削量、机床种类和加工工种等条件的不同,所采用的切削油也各有差异。在切削加工中恰当地选用切削油可以使表面光洁度提高1～2级,切削力减少15～30%,降低切削温度,成倍地提高刀具的耐用度。对切削油的一般要求如下:
Cutting oil is indispensable for cutting lubrication oil cooling, the purpose of cutting oil is to improve the durability of the tool to improve the quality of the processed parts, cutting force and reduce power to ensure that the chip away from the cutting zone easy to wash away. According to the processing of materials, cutting capacity, machine type and processing conditions and other different, the use of cutting oil also have their own differences. Appropriate choice of cutting oil cutting oil can improve the surface finish 1 to 2, the cutting force reduced by 15 to 30%, reducing the cutting temperature, doubling the durability of the tool. The general requirements for cutting oil are as follows: