Surface ultrasonic wave detection technology was studied on the longitudinal defect on the outer surface of T91 steel tube.The change rule of acoustic beam's incidence angle on the surface of tube was analyzed.According to the tube's size and the acoustic velocity in T91 steel tube,appropriate incidence angle and point of the probe were calculated.Artificial defect reference block was designed,compared with the natural defect test block,a reasonable detection technology was formulated.The test results show ...
【更新日期】
2016-03-02
【分类号】
TG115.285
【正文快照】
ZHANG Hongjun,MENG Yongle,GAO Lei,YIN Zun,LYU Yinan(Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710032,China)T91/P91钢是在9Cr-1Mo钢的基础上通过添加V,Nb等微量合金元素发展而成的耐热钢,是9%~12%Cr铁素体耐热钢的典型代表。因其具有良好的热强性能和工艺?
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