Girth weldability and welding process of Baosteel X80 UOE linepipes  

作　　者：LIU Shuo 

机构地区：[1]Welding ＆ Surface Technology Division, Research Institute, Baoshan Iron ＆ Steel Co, Ltd, Shanghai 201900, China

出　　处：《Baosteel Technical Research》2010年第3期15-19,共5页宝钢技术研究（英文版）

摘　　要：An analysis of the girth weldability of Baosteel X80 UOE （U-ing-O-ing-Expanding） linepipes was conducted using manual shielded metal arc welding （SMAW） and semiautomatic self-shielded flux cored wire arc welding （FCAW）. A technical specification for the optimum quality of a girth welding joint was obtained through a large amount of testing. According to the requirements of America Petroleum Institute（API） standard 1104 and the standards of the 2nd West-East natural gas transmission pipeline project,the mechanical properties of a girth welding joint were estimated. In addition,the effect of the girth welding procedure specifications and the consumable＇ s suitability on the impact toughness of the girth welding joint was discussed.An analysis of the girth weldability of Baosteel X80 UOE （U-ing-O-ing-Expanding） linepipes was conducted using manual shielded metal arc welding （SMAW） and semiautomatic self-shielded flux cored wire arc welding （FCAW）. A technical specification for the optimum quality of a girth welding joint was obtained through a large amount of testing. According to the requirements of America Petroleum Institute（API） standard 1104 and the standards of the 2nd West-East natural gas transmission pipeline project,the mechanical properties of a girth welding joint were estimated. In addition,the effect of the girth welding procedure specifications and the consumable＇ s suitability on the impact toughness of the girth welding joint was discussed.

关 键 词：X80 UOE linepipe girth weld SMAW FCAW mechanical performance 

分 类 号：TG457.11[金属学及工艺—焊接] TE973[石油与天然气工程—石油机械设备]