I'm taking welding classes and we are doing Oxy-A at the moment, but am
having great problems getting nice root penetration on simple butt welds at
the same time as adequate reinforcement of the weld face.
With a No3 nozzle (3 cu foot acetylene per hour), neutral flame, I'm using
2mm plate, spacing to about 2.5mm and using a leftwards technique. If I let
the 'onion' form then move off filling the puddle before I know it I've
blown a hole. If I feed fast enough to avoid blowing holes I end up with
insufficient root penetration and/or inadequate re-inforcement.
Any tips or advice would be appreciated whilst I go off and get my cylinders
refilled and try and find some more 2mm offcuts :(
Bromley, Kent, UK
17 years ago