Plasma arc Welding of Centrifugal Cast Steel Pipe (HK-40) (Report 1)

Abstract

It is proved that the keyhole type plasma arc welding method is very effective to the high speed circumferential joint weld of centrifugal cast steel pipe HK-40.
In such a case, however, the proper programming is necessary as to the start of weld, formation of back bead, crater treatment, etc.
Such an optimum programming is obtained.