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前言结507底层焊条是一种采用硷性渣系打底焊的专用焊条。焊接时应采用直流反接电源。使用这种焊条焊接厚壁容器和钢制管道的第一道焊缝;单面焊双面成型,焊缝里波成形较好。可以免去铲焊根和封底焊工序,减轻焊工劳动强度,提高焊接生产率。
Foreword knot 507 bottom electrode is a kind of special welding rod with alkaline slag base welding. DC connection should be used when welding power supply. Use this kind of electrode to weld the first weld of thick-walled container and steel pipe. The one-sided welding is double-sided forming and the wave forming in the weld is better. Can remove the shovel root and back welding procedures, reduce welder labor intensity, improve welding productivity.