Research on Welding Material and Process of High Manganese Low Temperature Steel SAW for LNG Storage Tank
- Vol. 53, Issue 5, Pages: 113-118(2023)
DOI: 10.7512/j.issn.1001-2303.2023.05.17
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陈成,汪昌红,包润新,等.LNG储罐用高锰低温钢埋弧焊焊接材料及工艺研究[J].电焊机,2023,53(5):113-118.
CHEN Cheng, WANG Changhong, BAO Runxin, et al.Research on Welding Material and Process of High Manganese Low Temperature Steel SAW for LNG Storage Tank[J].Electric Welding Machine, 2023, 53(5): 113-118.
研制出适用于LNG储罐用高锰低温钢配套的埋弧焊丝和焊剂。采用C-Mn-Cr-Ni-Mo合金体系设计,形成的焊缝金属中Mn含量为22.5%~25.5%,焊缝金属抗拉强度和-196 ℃低温冲击等力学性能优良,与奥氏体高锰低温钢匹配性良好。通过分析道间温度和热输入对熔敷金属力学性能的影响,结果表明,在焊接奥氏体高锰低温钢时,须控制好道间温度和采用较小的热输入,确保焊缝金属具有优良的综合力学性能。
The submerged arc welding wire and flux suitable for high manganese cryogenic steel used in LNG storage tank were developed. The C-Mn-Cr-Ni-Mo alloy system was used to design, and the Mn content in the weld metal formed is 22.5% ~ 25.5%.The weld metal has excellent mechanical properties such as tensile strength and -196 ℃ low temperature impact, and has a good match with austenitic high manganese cryogenic steel. By analyzing the influence of inter-pass temperature and heat input on the mechanical properties of deposited metal, the results show that when welding austenitic high manganese cryogenic steel, inter-pass temperature controlled and smaller heat input must be used to ensure that the weld metal has excellent comprehensive mechanical properties.
高锰低温钢-196 ℃低温冲击埋弧焊丝焊剂道间温度
high manganese cryogenic steel-196 ℃ low temperature impactsubmerged arc welding wirewelding fluxinter-pass temperature
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