The conditions which have an important influence on metal cutting are work material, cutting tool material, cutting tool geometry, cutting speed, feed rate, depth of cut and cutting fluid used.
对金属切削有重要影响的条件有工件材料、刀具材料、刀具几何形状、切削速度、进给率、切削深度和所用的切削液。
Cutting fluid is the important related material in metal cutting process.
切削液是金属切削加工中的重要配套材料。
The results show that the metal soften is dominant in dry turning process, a good surface can be acquired in wet turning, and the cutting fluid takes an effective effect at the end of tool wear.
试验表明：干切削状态下金属软化效应占主导地位，湿切削可获得更好的表面粗糙度，切削液在刀具磨损后期开始发挥作用。
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