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在磁粉探伤中,有时为了评价和纪录缺陷,需要保存工件上的缺陷磁痕,则需进行原始磁痕象的复制。下面介绍一种简易,快速的方法: 1.将检测出的磁痕部位擦拭干净; 2.用酒精调制磁悬液,一般应用黑色磁粉(干法也可以,但图象不如湿法清晰、逼真),通电检测,使缺陷磁痕清晰显示,自然挥发1～2分钟; 3.将事先备好的透明胶粘薄膜(胶带)覆在漏磁部位,这样漏磁部位的磁(痕)粉将粘在胶带上,仔细取下粘有磁粉的胶带;
In magnetic particle inspection, sometimes in order to evaluate and record defects, the need to preserve the defect magnetic marks on the workpiece, you need to copy the original magnetic mark. The following describes a simple and quick method: 1. Will detect the magnetic mark parts wipe clean; 2. Preparation of magnetic suspension with alcohol, the general application of black magnetic powder (dry method can be, but the image is not as clear as wet, realistic ), The power detection, so that the defect magnetic marks clearly show the natural volatilization 1 to 2 minutes; 3. Will be prepared in advance transparent adhesive film (tape) covered in the magnetic leakage parts, magnetic leakage part of the magnetic Stick to the tape, carefully remove the adhesive tape with magnetic powder;