Effect of Welding Process on Ultrasonic Testing of 9Ni Steel Weld Joint

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Yannan, Du^1^2 ; Xuchen, Zhu^1 ; Weiping, Zhu^1 ; Xiaoying, Tang^1^2 ; Xiaolong, Xue^1^2 ; Ju, Ding^1

Shanghai Inst. of Special Equip. Inspection and Tech. Res., Putuo, Shanghai

200062, China^1

Shanghai Engineering Research Center of Pressure Pipeline Intelligent Inspection, Putuo, Shanghai

200062, China^2

关键词: 9ni steels;    Coarse-grained;    High strength;    LNG storage tank;    Low temperature toughness;    Weld microstructures;    Welding process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042034/pdf
DOI  :  10.1088/1755-1315/310/4/042034

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In the world, 9Ni steel with the relatively low price, high strength, low temperature toughness and safety reliability has become the principal material of LNG storage tanks. The presence of coarse-grained microstructures in the weld microstructure has a substantial impact on the ultrasonic testing of the weld. Therefore, an excellent 9Ni steel ultrasonic testing technology is realized for a suitable welding process.