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JPS60211359A Magnetic powder flaw detecting method 失效
标题翻译：磁粉检测方法
公开(公告)号：JPS60211359A
公开(公告)日：1985-10-23
申请号：JP6777284
申请日：1984-04-06
申请人： Nissan Motor Co Ltd
发明人： SASAKI YOSHIKUNI , TOMATSU KOREFUMI , KAWAGUCHI HIROSHI , MASUDA HIROSHI
IPC分类号： G01N27/84
CPC分类号： G01N27/84
摘要： PURPOSE:To read and decide on a magnetic powder pattern easily and accurately by forming the magnetic powder pattern and then washing away an artificial pattern. CONSTITUTION:When magnetic powder or inspection liquid is applied over a surface of a magnetized work 1, the magnetic pattern including the artificial pattern is formed on the surface of the work 1. The work 1 is washed in the next process. When the work 1 is, for example, a columnar member and the surface defect of a shoulder part encircled with a alternate long and short dash line C is discriminated, water is flowed to the shoulder part at a desired flow rate from a nozzle 2 distance from the shoulder part in the washing process while the work 1 is rotated at a desired speed. Further, when the water flowing from the nozzle 2 is applied directly to the shoulder part, the water is brought into contact with the small-diameter part 3 of the work 1 without removing magnetic powder sticking on the surface defect part, and the artificial pattern is washed away with the water which flows down along the part 3. Thus, the artificial pattern is removed to discriminate the surface defect from the magnetic pattern on the surface of the work 1.
摘要翻译：目的：通过形成磁粉图案，然后清洗人造图案，轻松，准确地阅读和决定磁粉图案。构成：将磁性粉末或检查液施加在磁化工件1的表面上时，在工件1的表面上形成包括人造图案的磁性图案。工件1在下一工序中洗涤。当工件1为例如圆柱形构件并且区别用间隔短的虚线C包围的肩部的表面缺陷时，水以所需的流速从喷嘴2距离流到肩部在工作1以期望的速度旋转的同时，在洗涤过程中从肩部进行。此外，当从喷嘴2流出的水直接施加到肩部时，使水与工件1的小直径部3接触，而不会去除粘附在表面缺陷部上的磁粉，并且人造图案被沿着部分3向下流动的水冲走。因此，去除人造图案以将表面缺陷与工件1的表面上的磁性图案区分开。

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