介绍了大型管网施工工艺程序和混合型立向下焊焊接工艺原理。
Construction technology of large-scale pipeline and mixing type vertical downwards-welding technology is introduced.
采用药芯焊丝对奥氏体不锈钢管道进行打底焊接，MAG焊填充及盖面焊，立向上的水平固定全位置焊接。
Flux-cored wire is applied to the austenitic stainless steel pipe by back weld, MAG for the filling and cosmetic weld, at horizontal fixed round welding vertically up.
目前，国内带有立辊组的直缝焊管成型机大都采用双半径孔型。
The double radius hole type was commonly adopted for the forming machine of straight weld pipe with vertical roller in domestic present.
技术特点：本生产线具有翼板与腹板自动对中组立、翼板变形矫正、焊板速度可调等功能。
Technical character:This machine can perform the centering and assembling of both flange and web automatically, straightening of flange deformation, welding speed adjustment.
本衬垫由陶瓷衬块和铁皮槽组成，供立向气电自动单面焊。
This backing consists of the ceramic backing block and the metal case. It is suitable for SEGARC automatic process.
本衬垫由陶瓷衬块和铁皮槽组成，供立向气电自动单面焊。
This backing consists of the ceramic backing block and the metal case. It is suitable for SEGARC automatic process.
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