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研究了切削热对超临界材料KT5331AS0钢表面成分的影响。结果表明:在切削加工过程中产生的切削热,引起钢中合金元素含量不同程度的变化,其中,W、B、Al、Cr变化较为明显,其他元素含量变化较小。当切削速度、切削深度、每齿进给量较小时,W、B的质量分数损失较大,随着切削深度和每齿进给量的增加,W、B含量损失逐渐减小;切削速度较低时,Al含量的烧损较多,每齿进给量的增加对Al含量的烧损影响不大;切削速度较低时,Cr含量减少较多;每齿进给量增加,Cr含量减少的趋势增大。
The effect of cutting heat on the surface composition of the supercritical material KT5331AS0 was studied. The results show that the cutting heat generated during the cutting process causes the content of alloying elements in steel to change to varying degrees. Among them, the changes of W, B, Al and Cr are obvious while the contents of other elements change little. When the cutting speed, depth of cut and feed rate of each tooth are small, the mass fraction of W and B will be greatly lost. With the increase of cutting depth and feed per tooth, the loss of W and B contents will decrease gradually. When the cutting speed is low, the content of Cr decreases more; the feed per tooth increases and the content of Cr decreases The trend has increased.