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在金属合金零件及焊缝的表面缺陷检验小是采用渗透探伤还是磁粉探伤？这取决于缺陷的大小及形状，芬兰技术研究中心进行的一项研究表明，着色渗透探伤对于大多教材料中存在的各种形状的表面缺陷一点状或线状均能给出最可靠的探伤结果，而磁粉探伤则能可靠地显示裂纹及线状不连
In the metal alloy parts and weld surface defects inspection is the use of penetrant testing or magnetic particle inspection? Depending on the size and shape of the defect, a Finnish Technical Research Center study shows that penetrant flaw detection gives the most reliable flaw detection for any shape defects or lines that are present in most materials , While magnetic particle inspection can reliably show cracks and linear discontiguous