Improving the efficiency of multirun submerged-arc welding by the use of a forward fed metal powder addition

TWI Industrial Member Report Summary 367/1988

By K W Middleton

Background

Metal powder additions during the submerged-arc welding (SAW) of 50 and 75mm thick steel plate have been investigated in order to demonstrate the potential economic and technical benefits of this technique. Specific attention has been given to improving the completion rate in the root region of single V and T butt joint preparations using the powder addition to reduce significantly the effect of the highly penetrating arc.