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Brazing (was: Re: Large work holding)

 

I have the same problem, and at times (on motorcycle parts,? which are bigger), I've brazed with the work sitting on the burner of the gas stove I have in my basement, with that heat coming up from underneath, TWO propane or MAPP torches up top, and firebricks everywhere to keep the heat in.? That gave borderline enough heat, but if I'd had a third arm I'd have used another torch.

I have a variable power induction welder and using two carbon electrodes the way Jacques does is also something I've contemplated. I've also seen those PM articles, but I think the electrode holders are the only thing I'd need to make, right? Could a welder provide the juice?

Mike Taglieri?



On Fri, Sep 20, 2024, 4:38 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
I can "solder" in my sleep but have had problems with brazing. My first limitation is I only have a Turbo torch not oxy acetylene.

On Fri, Sep 20, 2024 at 3:42?PM Bruce J via <bruce.desertrat=[email protected]> wrote:
And honestly the only difference between ¡®brazing¡¯ and ¡¯soldering¡¯¡­is the temperature.?

Both are the same process: joining metal by melting a metal of a lower melting point to ¡®wet¡¯ the metal to be joined with the aid of a flux.

Cleanliness, flux, heat.?


On Sep 20, 2024, at 10:01?AM, Miket_NYC via <mctaglieri=[email protected]> wrote:

Actually, that old plumber's "3 basic rules" apply just as well to brazing as to soft soldering. You're just using different flux and (a lot) more heat.

Mike Taglieri?

On Fri, Sep 20, 2024, 12:46 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy





--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

 

Mike,
Yes, a welder can provide the juice. I have a carbon arc torch (cheap one) that I've used quite a bit with my AC arc welder. Gives you a lot more heat than gas torches.
Roger Cardon
 


here? the photo? of? my? special? carbone welder

the black part? are? insulated? ?and? the 2 part? can be? move? to? touch or? a bit? distenced for? plasma? building

jack 47 71


20240922_103757[1].jpg
20240922_103737[1].jpg
20240922_103733[1].jpg

 

¿ªÔÆÌåÓý

I used sil-phos in refrigeration. Doesn't need flux, prepping is minimal, stands up to relatively high pressures; Needs higher temps though.
 


I? verify? on? the? box

it is? mark? 50? amp

it? look to me? a bit? to hight? but? that? is? 500w? around?

the ok

jack 47 71


nb? the first? messge? said? server? was? bad? configured ??

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