zeppelin builder
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- 2,174
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- peoples republic of scotland
Stupid if you ask me, a top end regulator over £200 and it doesn't suit the application it's designed for. I don't know any industries which need 32lpm of purge gas nor welding gas unless youre talking purging an entire pipe system. I couldn't imagine running mig over 25lpm. Robotic applications? Who knows. Just want a gas saving regulator now, the elga just offers the neatest solution.[/QUOT
if we were doing big riser work in inconel our best set up would be 2 purge hoses running at over 30 lpm 3 foam dams 2 below one above the joint a vent running from the lower dam to vent to open end{lets out any pressure fluctuation due to movement of water column in pipe]and another vent for the welding enclosure venting to the open end, foam mushrooms would be taped on to the purge hose ends as difusers to tame any turbulence effect .we would record oxy readings and have a helper remove the tape and hand the welder wire so we could weld a full area between the tacks/bullets the lpm was reduced just before tying in the bead ,and kept on for the remainder of the weld on completion and xray a mobile camera was put inside the pipe to check the colour of root and haz has to be shiney so best to use an excess of gas and vent it as gas is cheaper than chopping /rewelding