Abstract High-speed turning ultra-high strength Steel—300M steel under dry and cryogenic minimum quantity of lubricant (CMQL) conditions was carried out to study the influence of different lubrication conditions on cutting force and tool wear. Through orthogonal test, the influence of cutting parameters such as cutting speed, feed and depth of cut on the flank wear under CMQL condition was studied. Finally, the forecasting model of tool wear under CMQL condition was established, and the cutting parameters were optimized. Compared with dry cutting condition, CMQL condition can better reduce the adhesion wear, oxidation wear and diffusion wear of coated carbide tools. The following cutting parameters v = 212.8 m/min, f = 0.14 mm/z and ap = 0.36 mm can be most effective in reducing tool wear under the CMQL condition.

中文翻译：

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干式和 CMQL 条件下高速车削超高强度钢的刀具磨损

摘要 对高速车削超高强度钢—300M钢进行干式低温极少量润滑剂（CMQL）条件下的研究，研究不同润滑条件对切削力和刀具磨损的影响。通过正交试验，研究了CMQL条件下切削速度、进给量、切深等切削参数对后刀面磨损的影响。最后，建立了CMQL条件下刀具磨损预测模型，并对切削参数进行了优化。与干切削工况相比，CMQL工况能更好地降低涂层硬质合金刀具的粘附磨损、氧化磨损和扩散磨损。以下切削参数 v = 212.8 m/min、f = 0.14 mm/z 和 ap = 0.36 mm 在 CMQL 条件下可以最有效地减少刀具磨损。