钢级管线钢焊管研制

介绍了X80及X100管线钢管的开发,重点针对国家高强度管道建设工程的需要,介绍了高强度大直径埋弧焊管机组以及为适应X80钢管生产进行的制管工艺技术方面的研究改进,包括开发出适应于高速焊接的高强度、高韧性焊接材料,使西气东输二线用1 219 mm×18.4 mm X80螺旋焊管焊速达到1.75 m/min;研究了X80管线钢经受焊接热循环后性能变化规律及组织特征,提出合理的焊接线能量参数。介绍了1 219 mm×18.4 mm X80螺旋埋弧焊管、1 219 mm×15.3 mm X100螺旋埋弧焊管实物产品性能。采用国产X80管线钢以及自主研究开发的埋弧焊接材料,成功开发出了X80钢级1 219 mm×18.4 mm螺旋埋弧焊管和1 219 mm×22 mm直缝埋弧焊管产品,目前已为西气东输二线工程生产X80螺旋埋弧焊管和直缝埋弧焊管超过100万t,并在螺旋焊管机组上进行了1 219 mm×15.3 mm X100螺旋埋弧焊管试制。

The Development of High-grade Pipeline Steel Welded Pipe

This article introduced the development of X80 and X100 pipeline steel pipe,especially introduced the high strength and large diameter SAWH pipe mill and the pipe manufacture process improvement for X80 steel pipe,including the development of high strength and high toughness welding material for high speed welding,which made the welding speed up to 1.75 m/min for X80 1 219 mm×18.4 mm SAWH pipe used for the Second West to East Gas Pipeline Project.The performance variation and structure feature after welding thermal cycle for X80 pipeline steel was studied,and reasonable welding heat input was put forward.It also introduced the product performance of X80 1 219 mm×18.4 mm SAWH pipe and X100 1 219 mm×15.3 mm SAWH pipe.Adopting X80 pipeline steel and self-developed welding material to successfully manufacture X80 1 219 mm×18.4mm SAWH pipe and 1 219 mm×22 mm SAWL pipe.At present,the produced quantity of X80 SAWH pipe and SAWL pipe was over 1 000 000 tons,which was supplied for the Second West to East Gas Pipeline Project,and the X100 1 219 mm×15.3 mm SAWH pipe had been conducted trial production on the SAWH pipe mill.