CAJ | 학술논문

直缝埋弧焊管生产线内外焊机组在焊接过程中会产生断弧烧穿缺陷，其主要原因为焊接车卡阻爬行和预焊及预焊修补焊缝浅等。分析了焊接车卡阻爬行的原因，并采取了相应的改进措施，即分别对焊接车道轨与横移车道轨、焊接车车体以及横移车减速机等进行了改造。改造后的实际使用结果表明，此次对焊接车输送系统的改造不仅直接降低了断弧烧穿缺陷的产生概率，而且使焊速更为稳定，也减少了咬边、夹渣等缺陷的出现几率。
직봉매호한관생산선내외한궤조재한접과정중회산생단호소천결함，기주요원인위한접차잡조파행화예한급예한수보한봉천등。분석료한접차잡조파행적원인，병채취료상응적개진조시，즉분별대한접차도궤여횡이차도궤、한접차차체이급횡이차감속궤등진행료개조。개조후적실제사용결과표명，차차대한접차수송계통적개조불부직접강저료단호소천결함적산생개솔，이차사한속경위은정，야감소료교변、협사등결함적출현궤솔。
The arc breaking burn through defects may generate in inside and outside unit of SAWL pipe production line, the main causes are welding carriage crawling, pre-welding and repair welding shallow for weld etc. In this article, it analyzed the reason of crawling, and adopted according improvement measures, that is conducting transform for welding carriage tracks, transverse carriage tracks, welding carriage body and reducer of transverse carriage. The modified actual use results showed that transportation system transform of welding carriage not only reduced probability of arc breaking burn through, but also decreased appear probability of undercut, slag inclusion etc., as well as welding speed more stable.