高速钢涂层刀具的切削和摩擦学性能研究

Cutting and Tribological Properties of High Speed Steel Coated Tools

采用非平衡磁控溅射离子镀方法,对高速钢刀具表面进行了涂层沉积处理,研究了表面涂层的显微形貌、物相组成和涂层的摩擦磨损性能,并对比分析了无涂层和有涂层刀具的切削性能。结果表明,高速钢表面的涂层组织致密、均匀,实现了与基体的良好冶金结合;不同偏压下涂层的物相均为Cr、Cr_2N、Cr N和Fe_3Mo_3N;高速钢刀具表面涂层在使用温度为600℃以下时具有较高的抗热摩擦磨损性能,而在温度为600℃以上时抗热摩擦磨损性能相对较差;高速钢刀具表面进行的非平衡磁控溅射离子镀沉积处理涂层,可以对切削刃起到良好的保护作用,并可以抑制或者减少刀具的磨损。

The coating deposition was prepared on the high-speed steel tool surface by unbalanced magnetron sputtering ion plating method, the microscopic morphology, phase composition and friction and wear properties of the coating was investigated, and the cutting performance of coating cut tools was comparative analyzed with without coating. The results show that the coating on the surface of the high speed steel is compact structure, uniform, and achieve a good metallurgical bonding with the substrate; the phase of coating under different bias are mainly Cr, Cr2N, CrN and Fe3Mo3N; It could work under 600 ℃, the coating on the high speed steel cutter surface has high thermal friction and wear resistance, on the country, it will be a relatively poor heat friction and wear performance above 600 ℃; The unbalanced magnetron sputtering ion plating deposition coating on the high speed steel cutter surface can be a good impact on the cutting edge of protection, and can inhibit or reduce tool wear.