钢板对接接头立焊位置的氩电联焊工艺

Argonelectro-welding technology in vertical position of steel plate butt joint

钢板对接接头立焊是焊接的基本操作方法,以尺寸规格为300 mm×150 mm×12 mm的20钢板件为例,采用?2.5 mm的H08Mn2SiA实心焊丝通过钨极氩弧焊进行打底层的焊接,选用?3.2 mm和?4.0 mm两种规格的E5015焊条进行填充层和盖面层的焊接,介绍了板状试件立位氩电联焊的焊前准备、组对和定位焊接、打底层焊接及填充层与盖面层焊接的工艺要点,说明了避免缺欠的焊接操作技巧和注意事项。结果表明,采用合适的试件钝边角度、组对间隙和焊接角度运条方式等焊接参数,可以获得合格的焊缝。

Vertical welding of steel plate butt joint is the basic operation method of welding.Take the 20 steel plate with the size of 300 mm×150 mm×12 mm as an example,use the?2.5 mm H08Mn2SiA solid core welding wire to weld the backing layer by argon arc welding,?3.2 mm and?4.0 mm E5015 electrode is used to filling and cover welding.This paper introduces the key points of the welding process of the argon electro-welding of the plate specimen in the vertical position,including the preparation before welding,the assembly and positioning welding,the welding of the backing layer and the welding of the filling layer and the covering layer,and explains the welding operation skills and precautions to avoid the defects.The results show that qualified welds can be obtained by using appropriate welding parameters,such as the angle of blunt edge of the specimen,the clearance of assembly and the way of welding angle.