STT+CO_2自动焊接技术  

STT+CO_2 Automatic Welding Technology

作　　者：范晓明[1] 

机构地区：[1]中国石化股份公司管道储运分公司鲁宁输油处,山东邹城273500

出　　处：《焊管》2005年第5期43-44,共2页Welded Pipe and Tube

摘　　要：针对CO2气体保护自动焊存在的“飞溅”这一严重缺陷,着重从STT控制原理和应用两方面阐述了STT+CO2自动焊技术。工程实践证实,应用STT控制的CO2气体保护焊能够极大地减少焊接时的飞溅,焊缝成型美观。并对甬—沪—宁进口原油管道工程中采用此焊接技术仍出现少量飞溅现象和爆裂声进行分析,指出美国LN-23P送丝机送丝速度的合理控制是改进这种现象的关键所在。新型改进的送丝机构已在仪征—长岭原油管道建设工程中得到应用,效果很好。It describes STT+CO_2 automatic welding technology from two aspects of STT control principle and application aimed to the serious defects——splash existed with CO_2 gas protective automatic welding.The project practice approves that to apply CO_2 gas protect automatic welding controlled by STT can greatly reduce the splash during welding and welded seam appears perfect.To analyze still occurred a little splash phenomena and crepitating by adopting this welding technology to Yong-Hu-Ning imported crude oil pipeline project and indicate that the rational control of feeding wire speed by feeding wire unit of US LN-23P is the key to improve this phenomena.The improved feeding wire mechanism applied to YiZheng-Changling crude oil pipeline construction project and gained good effect.

关 键 词：STT控制原理 CO2气体保护自动焊 焊接电流 焊接速度 送丝速度 

分 类 号：TG409[金属学及工艺—焊接]