研究了Ｈ１１／Ｘ２ＣｒＮｉＭｏＮ２２．５双相不锈复合钢板埋弧自动焊工艺，焊接材料的选择及其焊接性。结果表明，复层焊缝的δ铁素体含量在３５％～４５％内，其焊接性优良。过渡层的焊接采用较弱焊接规范和单道焊工艺，以控制较小的稀释率和良好的焊缝成形，防止在与基层焊缝的熔合线附近产生大量马氏体组织和其它硬化相。Ｈ１１／Ｘ２ＣｒＮｉＭｏＮ２２．５双相不锈复合钢板埋弧自动焊焊接接头具有良好的力学性能，复层焊缝具有极为优良的抗晶间腐蚀和应力腐蚀的能力。本研究为煤气工程中汽化炉的制造选定了合适的焊接材料并制定了最佳埋弧自动焊工艺。 The submerged arc automatic welding technology of H11 / X2CrNiMoN22.5 duplex stainless steel plate, the choice of welding material and its weldability were studied. The results show that the δ-ferrite content of the cladding weld is within 35% -45%, and its weldability is excellent. The transitional layer is welded using a weaker weld specification and a single pass process to control smaller dilution rates and good weld seam formation and prevent the generation of large amounts of martensite and other hardened phases near the weld line with the base weld. H11 / X2CrNiMoN22.5 duplex stainless steel clad steel submerged arc welded joints with good mechanical properties, cladding weld has excellent resistance to intergranular corrosion and stress corrosion. This research selected suitable welding materials for the manufacture of gasification furnace in gas project and developed the best submerged arc automatic welding technology.