The wire looks expensive, so will the machines that are capable of it be i expect?
What is MIG Brazing?
- Thread starter Bury the Trash
- Start date
Clay shooter
Member
When I was in the motor trade a lot of the body repairs had to be done with mig brazing due to the lower heat that's produced not affecting the tensile strength of the steel.
The machine would be the same along with the nozzle, however I can't remember what gas was used
The machine would be the same along with the nozzle, however I can't remember what gas was used
Clay shooter
Member
What would you be using it for?
Would be ideal for sheet metal fabrication,
Not good for structural work or rot repairs for MOT work ,this is where it gets stupid you can in certain circumstances MIG braze a new panel on to a car,you can't gas/ mig braze a patch on a car!
Totally stupid really
Would be ideal for sheet metal fabrication,
Not good for structural work or rot repairs for MOT work ,this is where it gets stupid you can in certain circumstances MIG braze a new panel on to a car,you can't gas/ mig braze a patch on a car!
Totally stupid really
Ah i see because possibly /its perceived that the strength wont quite be there visa v noit melting the steel to be joined / ie zero penetration
Only thing is i read somewhere that on astrength /fatigue test the 1mm steel panel broke
before the actual braze in the joint.
Clay shooter
Member
Your Spot on with that, I think it's all to do with how hard the steel becomes when it's cooled as brazing is carried out at about 450°c and mig about 3000°c there's more chance of the metal becoming to hard when mig welded
- Location
- Near Beeston Castle
I had a brief go at it in my restoration days, found ordinary mig easier therefore neater job so never bothered.
Lakesdigger
Member
Vw are quite keen on it due to the lower heat input not adversely affecting the type of steel used as you say. Although depending on the repair being done i know bonding panels on is often used instead as mig braze isn't the neatest or easiest to do a decent job with.
Clay shooter
Member
You are right about the bonded panels,
Vauxhall use a two3pack bonding agent and pop rivets in some repairs ( boot floor etc) although a recommend repair teqnique it not one that sits well with me,a back street bodge comes to mind
Vauxhall use a two3pack bonding agent and pop rivets in some repairs ( boot floor etc) although a recommend repair teqnique it not one that sits well with me,a back street bodge comes to mind
Lakesdigger
Member
Bmw now recommend rivets and bonding for chassis legs etc.
tomlad
Member
- Location
- nr. preston
Honestly never heard of mig braze .
Interesting
Interesting
smcapstick
Member
- Location
- Kirkby Lonsdale
As above, it’s to keep the temperature down in the HAZ.
ACEngineering
Member
- Location
- Oxon
Most of the panels on my man TGE (vw crafter) are bonded from factory by the looks of it!
- Location
- southern riverina Australia
Uses a silicon bronze wire . Ideal for Galvanized sheets. 100% Argon gas , same as what you use for Aluminum. A good multi process mig /tig inverter uses same gas for the Tig. So not much more of an expense. Uses a different liner to steel wire.
Can also use it for welding copper sheeting to dissimilar metals too apparently. Haven't played with it yet , but it's on the "to teach myself" list....along with aluminum welding.
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