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在炭素钢的结构上应用埋弧自动焊是一种高效率,高质量的工艺方法。而对于镍铬不锈钢的埋弧自动焊,由于缺乏合适的焊接材料没有得到使用。最初我们采用过瑞典的832MVT焊丝配上焊108焊剂,由于该焊丝铬镍比很低(Cr/Ni≈1.4),在产品上发现有大量的宏观裂缝。后又改用OCr18Ni9Ti焊丝配上焊112A陶质焊剂,虽在抗裂性及耐腐蚀性方面能满足产品的技术要求,但尚存在焊剂吸潮性强,焊缝表面有“压痕”等不
The application of submerged arc welding in the structure of carbon steel is a high efficiency and high quality process. For submerged arc welding of Ni-Cr stainless steel, it is not used due to the lack of suitable welding material. Originally, we used a Swedish 832MVT wire with a flux of 108. Due to the very low chromium / nickel ratio (Cr / Ni≈1.4), a large number of macroscopic cracks were found in the product. And then use OCr18Ni9Ti wire coupled with welding 112A ceramic flux, although in the crack resistance and corrosion resistance to meet the technical requirements of the product, but there is strong moisture absorption flux, weld surface “indentation”, etc.