【摘要】 针对以不同超声检测探头对某大厚度(大于30 mm)钛合金窄间隙(坡口间隙小于20mm)TIG焊缝进行超声检测时,检测结果存在差异的问题,对焊缝进行多次解剖,结合射线透照检测方法,分析了差异产生的原因,最终将位于判废线以上Ⅲ区缺陷判定为非危害性缺陷,对不同检测条件下检测结果的分析可供同行参考。更多还原

【Abstract】 Ultrasonic testing was used to detect the large thickness(more than 30 mm)and narrow-gap(less than 20mm)weld in a titanium alloy product.Under different detecting conditions,the results were found to be different,and a defect whose wave amplitude was located in area III above rejection line was even found.This paper further analyzed the causes of the diference,and the defect was ultimately identified as non-dangerous defect by dissection and radiography of the weld.This paper can work as a reference to those who are concerned.更多还原