对50mm厚EH550钢进行三丝埋弧焊接实验,配套焊丝材料为 DE-SD3,焊接热输入达50kJ/cm,母材的拉伸性能及焊接接头的-40℃冲击性能均满足要求。
The three-wire submerged arc welding experiment was carried out on 50mm thick EH550 steel, the filler material was DE-SD3, the welding heat input reached 50kJ/cm, the tensile properties of the base metal and the -40°C impact properties of the welded joints met the requirements.