Nuclear power,as a safe,economical,clean,and reliable energy source,holds significant im-portance in ensuring national energy security.By local nuclear power technology,we can reduce de-pendence on foreign technologies and equipment,enhance our autonomous innovation capabilities,and ensure the safe and stable operation of nuclear power plants.DN1050 main steam isolation valve and the DN500 main feedwater check valve,during their manufacturing process,face increased welding difficul-ties due to such as valve size,welding gun interference,and long welding distances.The rotary head au-tomatic hot wire TIG welding uses a welding gun with a length of 500 mm and an outer diameter of 25 mm to effectively preheat the welding wire,avoiding defects such as welding cracks and incomplete fu-sion.This evaluates the welding process to realize the application of new equipment in the localization of nuclear power,and also provides effective reference for welding similar products.
关键词
核电国产化/热丝氩弧焊/焊接工艺评定
Key words
domestication of nuclear power/hot wire TIG/welding process evaluation
维普
万方数据