表面微织构Al_2O_3-TiC陶瓷刀具的切削性能研究

Cutting Performance of Al_2O_3-TiC Micro Textured Ceramic Cutting Tool

研究了不同形状和不同结构尺寸的表面微织构陶瓷刀具切削45#淬火钢后,陶瓷刀具的前刀面月牙洼磨损形貌和后刀面磨损量,进而分析表面微织构对陶瓷刀具的作用机理和不同表面微织构的影响。其中,分别针对无微织构和三种不同形状,不同深度、宽度和间距的表面微织构陶瓷刀具做了单因素切削实验。实验结果表明,具有表面微织构的陶瓷刀具切削性能优于无微织构陶瓷刀具,过大的深度、宽度和间距反而不利于刀具前刀面的减摩。刀具表面微织构深度为10μm、宽度为25μm、间距为50μm时,与切削刃平行的横向微织构陶瓷刀具的切削性能最好,即该表面微织构的减摩效果最明显。

After using ceramic cutting tool with different morphology and structure size micro texture on the rake surface to cut 45# hardened steel, to study ceramic cutting tool rake face of crater wear morphology and the wear of the cutting tool flank, then analyze the mechanism and the influence of different surface micro texture to ceramic cutting tool. In detail, respectively doing single factor cutting experiment with ceramic cutting tool having non-micro texture, three kinds of different morphology, different depth, width and space of surface texture, The experimental results show that the cutting performance of surface micro textured ceramic cutting tool is better than that of the non-micro textured ceramic cutting tool, and the oversized depth; width and space go against the anti-frictian of the rake surface, When the size of micro texture in the rake surface are 10μm depth, 25 μm width and 50μm space, the cutting performance of transverse micro texture ceramic cutting tool is best, that is, this kind of surface micro texture has an obvious anti-friction effect.