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针对低温(—46～—101℃)设备用钢(3.5Ni钢)的使用要求,在对其焊接性分析的基础上,正确地选择焊接材料以及制定合理的工艺措施,从而改善了该钢种接头的缺口韧性。
Aiming at the requirements of low temperature (-46 ~ -101 ℃) equipment steel (3.5Ni steel), based on the analysis of its weldability, the correct choice of welding materials and to develop reasonable process measures to improve the steel Notch toughness of joints.