FLOW WELDING

woodchucker

woodchucker

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back in the 80s I went to a manufacturing trade show and saw an amazing welding setup. I think they called it FLOW WELDING. Has anyone seen it? What happened to it?

The guy took two piece of steel, set them out, then took the gun and ran the gun to the seam. Out came this black heavy looking slag as he moved the gun.
When he was done, a pair of pliers lifted the black slag, and a beautiful weld was underneath. NO FLASH no weaving..

Stunning welds, with what looked like no expertise.

I have never seen it since?
 
Haven't seen that one, but flow welding is usually done by the addition of molten metal to joint two parts.
 
How did they do it with a flexible hose? molten metal going through any hose has to be scorching hot?

it was really cool , and the weld was absolutely gorgeous.
 
damn, that's close. I don't remember the loose flux... I kind of remember the slag just lifting off, and being black, but that doesn't mean that they haven't changed it in 35 or so years.
 
Where I used to work, they made large diameter line pipe, up to 42" with 15/16" wall thickness, if the sub arc welds had a defect in an area inside or outside, they had a portable hand held sub arc gun that had a flux hopper built onto it. All the welds were X rayed for defects and repaired if necessary. Small skinny guys were in demand there for inside the pipe work, as small as 20" diameter.
 
benmychree said:
... Small skinny guys were in demand there for inside the pipe work, as small as 20" diameter.
Click to expand...
That reminds me of a coworker who, for his summer job, was a pipeline welder in El Centro California, which is basically a desert. He said that one day, he was welding inside a pipe when it was 114 F outside, and it was then that he decided to become an engineer...
 
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