Firstly, advanced inspection methods such as magnaflux method, portable roll surface rigidity detector, macrostructure analysis and so on should be applied to find out the roll defects, which are difficult to be observed with naked eyes. 首先,采用磁粉探伤、便携式轧辊表面硬度检测仪、低倍组织分析等先进检测手段,及时发现肉眼难以观测到的轧辊缺陷。
Discussion on magnaflux inspection standard for locomotive diesel engine crankshaft 关于机车曲轴磁粉探伤标准的探讨