|关键词: LNG 9%Ni钢 镍基埋弧焊丝 烧结焊剂
|Development of submerged arc welding materials for 9% Ni steel used in LNG cryogenic storage tank
Wei Tao 1,2 ， Xu Kai 2 ， Fei Wei 1,2 ， Feng Zhuo 1,2 ， Liang Jianming 3
|The research work on the welding materials and welding technology of 9% Ni steel was carried out. The nickel based welding wire HNi276 and sintered flux SJ609 applied to AC-DC arc welding power source were developed for submerged arc welding on flat and horizontal position. The results showed that chemical composition and properties of the deposited metal can reach the requirements of the project. The processing property and mechanical properties of the weld metal are equivalent to those of the foreign products of the same kind.
|Key words: LNG 9% Ni steel nickel based submerged arc welding wire sintered flux