chassis welding or brazing?

[Rob Walker]

On thin tube or box section its only too easy to get the joint too hot.

[robbieclark]

I remember reading/hearing that the behavior of a bronze welded chassis was different in a crash, in that the welds deformed more before fracturing thus possibly absorbing more impact. Any truth in this - or just old wives tales?

[Bare]

V interesting so far.. so let me get this right?

Brazing and "Bronze Welding' are specialisations of the same thing.. both require Flux ..both are Brass based, but Bronze Welding uses a Nickel silicone added Alloy for a greater strength potential?

Except for Sales talk about Temp control consistency.. the Arc based heat implement is used Cuz it is cheaper than buying a Truckload of Gas Cylinders weekly ?.

I have seen more than enough Welders over the years to realize that Operator Skill is EVERYTHING.. Have even seen a fellow butt weld 20 Ga Ali sheet with an oxy/Acet. rig.. he made it look easier to do than soldering, and with absolutely flawless result... this kind of thing engenders Genuine respect for skill.

[I.Mupferit]

Bronze welding is a more difficult process to learn and get right. It is more suited to thinner gauge steel than mig and causes far less distortion. Our best welders can weld down to 26G (0.4mm) without blowing a hole in the parent metal but like I say, it isn't easy and has taken them years to become that skilfull.

 

We use it in my factory for welding thin gauge galvanised steel as the relatively low heat destroys less of the zinc galvanised plating.

 

Brent

 

2.3 DURATEC SV. Gad these things are expensive ❗

[JampJ]

I believe the main reason that brazing is prefered, is that it allows flexibility of the joint under stress, and has less chance of fracturing than a welded joint.

Cheers John Hall

 

 

[Joe 90]

The bronze filler is much stronger and a much better gap filler than braze. The lower temperature compared to a weld means you don't get much of a heat affected zone in the tubes, which is where they fail when overstressed. It's probably the best way to join chassis tubes, assuming the operator has the neccessary skill.

 

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