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本文介绍了火力发电厂首次引用的海水淡化装置蒸发器上采用的316L不锈钢与2205双相不锈钢的焊接工艺。通过为实际焊接工况特制的氩弧焊背面保护装置,焊接获得了成功,对不锈钢的大管道焊接有一定的借鉴意义。
This paper describes the welding process of 316L stainless steel and 2205 duplex stainless steel used on the evaporator of seawater desalination unit first used in thermal power plant. Through the tailor-made TIG welding back protection device for the actual welding conditions, the welding has been successful, which is of great significance to the large-diameter pipe welding of stainless steel.