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本标准规定了检验表面开口缺陷的渗透探伤方法及缺陷显示痕迹的等级分类。1 一般事项 1.1 探伤前应预先考虑到被检物表面上可能出现的缺陷种类及大小,被检物的用途、表面粗糙度、数量和尺寸以及探伤剂的性质,然后选择适当的方法及确定操作细则。 1.2 本标准中的等级分类适用于最终加工面上缺陷的显示痕迹。合格等级应事先由供需双方协商确
This standard specifies the inspection of open defects on the surface of the open flaw detection methods and defects show the level of classification. 1 General 1.1 Before flaw detection should be pre-considered to be on the surface of the type of defect may appear on the type and size of the test object, the use of surface roughness, the number and size and nature of the flaw detector, and then select the appropriate method and determine the operation Rules. 1.2 The classification of the standard applies to the final surface defects on the display traces. Qualified level should be prior consultation between supply and demand sides