In order to improve the welding productive and short the period efficiency of ship-building the high efficient welding technique has been used in many domestic shipyards . FCB is short for the high efficient technique of flux and copper backing with one-side welding both-side forming .

为了提高造船的生产效率，缩短造船周期，国内许多大型造船厂采用 焊剂铜 衬垫单面焊双面成形的高效 焊接方法，简称FCB法。

Welding efficiency is raised greatly by using submerged arc welding technology and erecting reliable flux backing simply .

采用带 焊剂 垫埋弧 自动 焊工艺可大大提高H型钢的焊接工作效率。

There are a lot of inclusions in weld bead by CO2 arc shielded welding using flux cored wire and ceramic backing .

药芯 焊丝陶质 衬垫CO2半 自动单面 焊焊缝中的夹杂物偏多。

The distinguishing features of welding and control method of welding deformation for welding of H section steel are introduced . The welding condition of automatic submerged arc welding with flux backing is determined by the test of welding technology .

介绍了H型钢的焊接特点及焊接变形的控制方法，并通过焊接工艺试验确定了带 焊剂 垫埋弧自动 焊的焊接工艺参数。