Alumiweld welding rods ?

Has anyone tried these to weld aluminum ? It is a low temp. melting point . I need to weld .25" plate. Is this stuff as good as they claim ?
Thanks for any replies..
 
Hello farmallstrong,

Years back I tried some, what a joke! May be now they are better? Doubt it very much. A total waste of time. If by .25" you mean 1/4 in" I would use a MIG gun. If it is .025 sheet, then TIG would be the ticket............

Guido
 
(quoted from post at 21:22:05 10/16/14) Has anyone tried these to weld aluminum ? It is a low temp. melting point . I need to weld .25" plate. Is this stuff as good as they claim ?
Thanks for any replies..
've only tried Alumalloy once, without success. The instructions specify using a stainless steel brush to clean the area, which couldn't do because I didn't have a ss brush. Maybe that was my problem. It isn't really welding, it's more like brazing (if you can get it to stick). I wish I had a TIG rig, but alas I don't.
 
FOLLOW the directions! You neeed to have everything surgicaly clean first off. Clean the area with SS brush. Metal will poison the weld. Gentle heat and it will weld. I have used them quite a few times and they work. There is a video somewhere that is like 20 minutes long and shows how to use them.
 
Technically they are brazing rods. If you need to weld quarter-inch aluminum, chances are it's something structural. I'd find someone with a TIG rig.
 
Many years ago... My now ex wife worked at a company that manufactured aluminum evaporators for air conditioners. She was one of the few they were able to teach to braze thin wall aluminum fittings.
Otherwise, she couldn't poor pi$$ out of a boot or boil water, but somehow she could braze aluminum! LOL
 
I tried it once years ago, but it didn't work good. But then I had good equipment and other options so there was no reason to work at it to try and figure it out. The genersl consensus on the welding sites I go to is that it's not that good and very tough to use.
 
Where I used to work, we always mig welded aluminum and more than 1/16" thick.

Also, if the weld has to be strong, or is in any way structural, it should be welded with 5356 wire, and 100% argon gas. Using any helium will create way too much penetration. I'd suggest using a backing plate also, if possible. Trying to do a full penetration weld on material that thick will produce too many burn throughs. (over penetration)
 
Hello Steve@Advance,

The fellow that sold the company that wire was a welder by trade. My boss wanted to try it.
He said that he worked in production is Scotland, brazed aluminum most of the time. Amana farmed out this piece, aluminum and copper tubing.
They had aluminum evaporator and copper condenser.
This piece made the transition with no leaks. It was a friction weld process, I believe out of
Philadelphia?

Guido.
a171762.jpg
 
I want to thank everyone who replied to my post. I watched a clip on u tube about it. They also said to clean it with a ss brush.
It also said you can get the rod at Harbor Freight. I checked H.F. and it is $15.99 for 8 rods. I am a Plumber by trade so I have a lot of experience with a torch . Thanks again for the replies.
 
I"ve used in to fill holes in aluminum irrigation pipe and it worked well. I tried it with cracks in the pipe, after stop drilling the cracks and it eventually popped off after a few months of 24/7 use. I think it"s because because the crack area flexes under pressure. Turning the crack into a slot then using Alumaweld would probably work better.
I would not use this product on 1/4" plate in a structural application.
 

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