奥氏体不锈钢对接焊接接头的超声检测中，带焊缝的对比试块的制作对检测评价结果非常重要，也能为超声波仪器探头系统的灵敏度调整提供较为客观有效的参考。为使对比试块更贴近实际检测的需要，采用将试块竖立焊接方式设计制作了超声检测对比试块。并与平躺X型坡口对比试块进行了细致对比，结果显示采用竖立焊接试块调试的检测灵敏度更为恰当。实际检测工作也验证了竖立焊接对比试块能更好地满足检测要求。

During the ultrasonic testing of the butt joint of Austenitic stainless steel, it is very important to fabricate the comparison test block with weld for the evaluation; and it is also effective method to adjust sensitivity for the system of probe and UT instrument. In order to make the block further meet the actual requirements, the specific block was designed and fabricated by the way of vertical welding, and compared with the block using flat and X-type groove, the block was regarded that it was more suitable to adjust the reference sensitivity. It was verified that the block satisfied the requirement in practice.