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本文论述了空心阴极离子镀原理,高速钢刀具氮化钛涂层工艺条件的选择,如涂层材料、沉积温度、工件偏压、涂层相成分的选择依据等试验结果。介绍了高速钢刀具涂层相成分分析及断面成分的电子探针、离子探针、电子衍射分析以及涂层形貌的观测和涂层结晶择优取向的测定。报道了涂层耐磨性的测定和涂层刀具切削性能以及各种涂层高速钢刀具在生产线上的切削试验结果和涂层工具的经济效益分析。试验证明,用空心阴极法制得的氮化钛涂层高速钢刀具可以降低摩擦系数25%左右,降低刀具的切削力30%左右,可明显减少刀具切削时的积屑瘤,因而高提了加工件的尺寸精度和表面光洁度。氮化钛涂层高速钢刀具的使用寿命可提高3～5倍,涂层刀具的经济效益明显。
In this paper, the principles of hollow cathode ion plating, the selection of titanium nitride coating process conditions for high-speed steel cutting tools, such as the coating material, deposition temperature, workpiece bias and the selection of coating phase composition, are discussed. The composition analysis of high-speed steel cutting tool coating and the electronic probe, ion probe, electron diffraction analysis, the observation of the coating morphology and the determination of the preferred orientation of the coating crystal were also introduced. The measurement of coating abrasion resistance, the cutting performance of coated tools and the cutting test results of coating high speed steel cutting tools on the production line and the economic benefit analysis of coating tools are reported. Experiments show that the hollow cathode method of titanium nitride coated high-speed steel cutting tool can reduce the friction coefficient of about 25%, reducing the cutter cutting force of about 30%, can significantly reduce the tool cutting edge of the BUE, which raised the processing Part size accuracy and surface finish. Titanium nitride coated high-speed steel tool life can be increased by 3 to 5 times, the obvious economic benefits of coated tools.