第五篇难加工材料的磨削划伤磨削划伤,是个比较新颖的问题,在通常情况下,往往被表面粗糙度所代替,对在正常工作条件下的普通零件,其影响并不明显,故磨削划伤易被忽视。但是,在磨削难加工材料中出现的划伤问题,却经常成为影响零件抗疲劳强度和耐腐蚀能力的主要因素,有时还会造成重大技术故障。因此,对难加工材料的磨削划伤问题,进行深入探讨是完全必要的。一、磨削划伤的形貌在已加工表面上形成不同于正常磨削纹路,较深的、独立的磨削划痕,称为磨削划伤。其划伤的方向 The fifth hard-to-machine material grinding Scratch grinding scratches, is a relatively new issue, under normal circumstances, often replaced by the surface roughness of ordinary parts under normal working conditions, the impact is not obvious , So grinding scratches easily overlooked. However, scratches that appear in the grinding of difficult-to-machine materials often become a major factor affecting the fatigue and corrosion resistance of parts, sometimes causing major technical problems. Therefore, it is absolutely necessary to conduct deep research on the problem of grinding and scratching of difficult-to-machine materials. First, the morphology of grinding scratches formed on the machined surface is different from the normal grinding lines, deep, independent grinding scratches, called grinding scratches. Its scratched direction