运用于化工、石油、城建、冶金、纺织工业中的球罐,最常见的缺陷有错边、角变形,裂纹、气孔和夹渣、未焊透、未熔合等。而裂纹是危险性最大的一种缺陷。为了准确、有效地无损检验出球罐的内部缺陷,使用铱-192γ射线探伤机探伤则可代替传统的100％超声探伤及表面探伤为主,辅以适量的X射线拍片抽查及复核的方法。铱-192γ射线探伤机是利用材料对γ射线吸收程度的差异,通过γ射线拍片的方法,从 It is used in the chemical tank, petroleum, urban construction, metallurgy, textile industry in the tank, the most common defects are wrong edge, corner deformation, cracks, porosity and slag, not penetration, not fusion. The crack is the most dangerous one of the defects. In order to accurately and effectively non-destructive examination of the internal defects of the spherical tank, the use of iridium -192γ ray detector flaw detection instead of the traditional 100% ultrasonic flaw detection and surface flaw detection, supplemented by the amount of X-ray film sampling and review methods. Ir -192 γ-ray detector is the use of materials on the degree of γ-ray absorption differences, through the gamma ray film method, from