大厚度钛合金窄间隙TIG焊缝的超声检测  

Ultrasonic Testing of Narrow-gap TIG Weld of Large Thickness Titanium Alloy

作　　者：王伏喜[1] 李斌[1] 王海登 鄂楠[1] 

机构地区：[1]洛阳船舶材料研究所,洛阳471039

出　　处：《无损检测》2017年第3期74-76,共3页Nondestructive Testing

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。Ultrasonic testing was used to detect the large thickness （more than 30 mm） and narrow-gap （less than 20 mm） weld in a titanium alloy product. Under different detecting conditions, the results were found to he 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.

关 键 词：超声检测 窄间隙焊缝 钛合金 缺陷 

分 类 号：TG115.28[金属学及工艺—物理冶金]