Abstract Superalloy is widely used in the aerospace industry and is a typical difficult-to-cut material. PCBN tool has good cutting efficiency in processing superalloy, but it has a larger cutting force, higher cutting temperature and severe tool wear in the cutting process. High-pressure cooling has great advantages in processing high strength steels such as superalloy, which can effectively reduce cutting temperature and improve tool-chip breaking performance, thereby reducing tool wear. Therefore, it is of theoretical significance and practical value to study tool wear mechanism of PCBN tool cutting superalloy under high-pressure cooling. Firstly, the wear form of the flank is analyzed to provide theoretical support for tool wear research; Secondly, the experimental study of tool wear under high-pressure cooling is carried out. The tool wear under different cutting time, cutting speed and cooling pressure is analyzed respectively, and the influence rule of different cutting conditions on tool wear is obtained; Finally, a tool wear prediction model under high-pressure cooling is established to provide theoretical basis and technical methods for efficient processing of superalloy and optimization of cutting parameters under high-pressure cooling.

中文翻译：

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高压冷却切削高温合金刀具磨损试验研究

摘要 高温合金广泛应用于航空航天工业，是一种典型的难切削材料。PCBN刀具在加工高温合金时具有良好的切削效率，但在切削过程中切削力较大，切削温度较高，刀具磨损严重。高压冷却在加工高温合金等高强度钢时具有很大优势，可有效降低切削温度，提高刀具断屑性能，从而减少刀具磨损。因此，研究高压冷却下PCBN刀具切削高温合金的刀具磨损机理具有理论意义和实用价值。首先分析了后刀面的磨损形式，为刀具磨损研究提供理论支持；其次，进行了高压冷却下刀具磨损的实验研究。分别分析了不同切削时间、切削速度和冷却压力下的刀具磨损情况，得到了不同切削条件对刀具磨损的影响规律；最后，建立了高压冷却下刀具磨损预测模型，为高温合金的高效加工和高压冷却下切削参数的优化提供理论依据和技术方法。