oxy-acetylene brazing question

[Bluesman]

Uerah, poly is standard here too now.

[tigqk]

I am pretty sure the flighting is an alloy that is harder wearing than the auger shaft, but I don't see why you cannot mig or tig weld these two together with with e70s6 mig or tig wire other than oa being conveinent to use, to me braze weld is more suseptable to breakage from flexing than two fusion welded parent metals. I farm part time and would not braze it, if I had another process handy, yes they can be burning the zinc out of the brass, and reason for not getting a good mig weld is wrong electrode selection and poor welding technique from most farm hand.Seems to me people think mig welding is for idiots, automated and easy, when you have to be aware of your limits the machine isn't doing it for you, you still need a good weld.Recenlty I had a weld fail on a pin I made, burned it in cold, on a hardened steel pin, went back and did it right with 6010,nice root, right penetration lesson learned for awhile.

[Bluesman]

It is not a regular type auger with a shaft and flighting. There is no shaft, the flighting is spring steel and it has to be able to flex up, down make curves and corners. It is ran through a piece of 3 and half inch pvc pipe. It is not only made of spring steel, but is coiled in a spring spiral. I can assure you that stick or mig welding will make it too stiff and brittle. It will not have ANY flex in the area of the repair and it WILL fail. Brazing seems to be the ONLY process that will successfully repair it and so far, I've been growing chickens for Sanderson Farms for 11 years and have been repairing auger lines and NOT once has a braze failed. Have had several that I experimeted with with stick and mig and they always break after about the second use. I will take some pics of the auger flighting if I get a chance tomorrow so you fellas will see what I'm talking about.

[rustycase]

Duct tape is a "modern" convenience. We used bailing wire for most everything that was not brazed or welded and used bailing wire many times for filler wire for welding. Can't find bailing wire any more here though. Everyone has gone to poly twine (I hate that stuff). Thurmond

Everything gots its limitations, T...

i've re-used that bale twine for lots of things... Probably most noticeable was for guys on an 80ft ham radio antenna mast... it lasted over 5yrs!
Multi strands were NOT good for towing a car, though. THAT was not even a spectacular failure... it just didn't work.

Good luck
rc