Abstract In this study, the cutting edge passivation by a micro-abrasive blasting method for cermet inserts and its machining performance were investigated. The micro-abrasive blasting parameters for cermet inserts were optimized and the micro-creation of cutting edge was determined with detail. A Back Propagation (BP) neural network prediction model was further established based on our micro-abrasive blasting experiment datum, which can directly evaluate the micro-abrasive blasting ability to generate the specific edge radius. The improvement of cutting performance of micro-abrasive blasted cermet inserts benefits from the strengthening of cutting edge that caused by the obvious elimination of a large number of micro-defects rooted around the edge, and the formation of circular cutting edge is the result of brittle removal and plastic removal. The micro-creation of inserts can acquire a circular cutting edge, and the optimal edge radius is 15 μm under the selected cutting conditions when the tool life was chosen as an optimization target and the surface roughness was simultaneously taken into account. It is found that the blasted cermet inserts can prolong the tool life by at least 86% and the machined-surface quality can be improved by up to 1.65 μm, compared to inserts without micro-abrasive blasting.

中文翻译：

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Ti(C,N)金属陶瓷刀片微喷砂工艺微创及其刀具性能

摘要 在这项研究中，研究了金属陶瓷刀片通过微磨料喷砂方法的切削刃钝化及其加工性能。优化了金属陶瓷刀片的微喷丸参数，并详细确定了切削刃的微创。基于微磨料爆破实验数据，进一步建立了反向传播（BP）神经网络预测模型，可以直接评价微磨料爆破产生特定边缘半径的能力。微磨料喷砂金属陶瓷刀片切削性能的提高得益于切削刃的强化，明显消除了大量根植于切削刃周围的微缺陷，形成圆形切削刃是脆性的结果。去除和塑料去除。刀片的微创可以获得圆形切削刃，在选择刀具寿命作为优化目标并同时考虑表面粗糙度的情况下，在所选切削条件下的最佳刃口半径为15μm。结果表明，与未进行微喷砂处理的刀片相比，经过喷砂处理的金属陶瓷刀片可将刀具寿命延长至少 86%，加工表面质量可提高多达 1.65 μm。