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1前言众所周知．对接焊缝的未爆透缺陷采用X射线探伤是比较容易检出的。这里讨论的是一种比较特殊的未焊透其产生和射线探伤漏检的原因以及处理方法。产品为不锈钢烘筒．材质为1Cr18NigTi，壁厚3毫米，焊接方法为手工钨极氛弧焊．不开被日双面焊接。探伤比例：产品为≥20％．产
1 Preface We all know. Unexploded defects of butt welds using X-ray flaw detection is relatively easy to detect. Discussed here is a rather special reason for the lack of penetration and the underexposure of radiographic flaw detection and treatment methods. Products for stainless steel drying cylinder. The material is 1Cr18NigTi, wall thickness 3 mm, the welding method is manual tungsten arc welding. Do not open by the Japanese double-sided welding. Flaw detection ratio: the product is ≥20%. Production