ALU - Welder

[ZION]

Sounds like a Giant Anthem? They have lifetime warranties on the frame and normally don't argue about replacing.

HAHA..

Its a fuji,warranty over. Bike fine except for small crack on weld.Really a waste to turn rear stays into toilet roll holder.

[Brighter-Lights]

[ZION]

http://www.youtube.com/watch?v=6emWh53WpZI

Ty have watched this and a few others. Pitty he doesnt show end weld results... is good that you can pick up which rods to use just by the series alu,.. think the fuji 6000 series too.

[Mads]

Huh? Do alu welding everyday and have never had to do that. And no not just a quick weld here and there. Some of the jobs are tanks that transport flammable liquids. Certification is needed on welds like these so its not joe average welding.

Very scares skill you have Onetime. Not everyone or anyone can do it. l used to work for fabrication co and we had all our days finding the right employees. l answered the phone so l am not one, but to answer a phone at a fabrication co enquires a lot more skill than anyone might think.

[pastapouch]

Huh? Do alu welding everyday and have never had to do that. And no not just a quick weld here and there. Some of the jobs are tanks that transport flammable liquids. Certification is needed on welds like these so its not joe average welding.

hmmm, my previuos boss was in engineering for Krygkor and thats what he told me about alu welding, maybe another application or serios stuff. If you really into it, or not ,get a wasted piece of alu and your welder and play, experience is the best teacher. If you stuff it up, you've done it wrong.

[Christie]

If it is on a weld, there is a chance that a proper weld will last, as long as they dont try to pre-heat the frame too hot. Most bike aluminiums are precipitation hardened, to give it strength. If it is given too muchheat the precipitates gets messed up (a metallugist could explain why)

 

Try a good engineering shop with somebody that has alu welding experience.

[Brian Fantana]

TY for reply

Thats the price of a new dual frame ,tryna get the dude back on bike with minimal costs.

So no cheap decent welders. TIG welders even more expensive ?

 

Aluminium should be TIG welded, preferably AC TIG or AC squarewave TIG. In certain applications helium is incorporated with the Argon in order to obtain correct shielding. The above means serious $$$. Way better to have an expert do it for you, than buying a welder yourself.

 

We have a few artisans at our plant who weld Aluminium very well, but those are usually thick plates, and the components are not exposed to the type of stress like you will find in a MTB frame. On a MTB frame, the heat treatment is crucial.

 

But in the end a MTB frame is a relative inexpensive item, and a crack is a good excuse for an upgrade ( my opinion of course).

Edited June 8, 2013 by Brian Fantana

[Wez-O]

Speaking of aluminum welding, I posted a while back about an aluminum frame that I damaged in a crash and the derailer cable lug ripped a whole in the frame on the rear stay where the lug was welded to it.

 

Now I understand that this is not a weight bearing area of the bike, but would you guys recommend welding this including re-welding the lug onto the frame or should I just toss the frame and replace it?