SMG型渗透剂是一种新型表面探伤剂,使用后1分钟即可达到自显像效果,可以不用显像液,且可以重复多次显像,不会产生过洗。其特点是:①一种渗透两种显像(自显像和常规显像);②绿色环保。铸件表面非常粗糙且几何形状复杂,所产生的缺陷也形状各异,给检测带来一定困难。特别是高压阀门、叶片、复杂的关键性零部件等,如果存在隐患,会在使用过程中造成严重事故。而有些部件由 SMG penetrant is a new type of surface flaw detection agent, which can achieve the self-imaging effect within 1 minute after use. It can dispense with imaging fluid and can be repeatedly developed for many times without over washing. Its features are: ① a penetration of two imaging (self-imaging and conventional imaging); ② green. Casting the surface is very rough and the geometry is complex, the resulting defects are also different shapes, to bring some difficulties in testing. In particular, high-pressure valves, blades, complex key components, etc., if there are hidden dangers, will cause serious accidents during use. And some parts from