Possible to weld metal with small butane torches????

[Hybrid fourdoor]

Hey guys, I was wondering if you can do light use welding of like steel and aluminum with these hand held butane torches. They say they can get up to and over 2000*F

Like these little things;

 

[Nisbeth]

Most likely not. Temperature isn't everything, you also need to consider the energy the torch is able to put out. If it doesn't put out enough energy, the material you're welding will dissipate so much heat that the torch is unable to heat it enough. Look for something a little heavier


/U.

 

[Sch3mat1c]

Ya. It can't even weld your fingers, and skin is really weak stuff when it comes to comparisons with metal. Seriously, those POC's have less heat than a candle.

Note that with a burner like THIS, it only gets maybe orange hot (1600-1700øF) in free air, despite the prodigious amount of power output. Putting up some firebricks to hold the heat in can bring that to melt steel but the heat is too diffuse to actually weld a joint or anything.

So. For one you need a temperature higher than the melting point of around 3,000°F. Acetylene and pure oxygen burns upwards of 5,000 degrees, it's very hot stuff. Plasma in the form of a high-current arc has even more, the low end being around 10,000°F. Put 100 amps at about 20V into a space that small and you'll melt anything.

Heh. This post looks more like describing how to build something, without giving anywhere near enough details to do so, than just telling you why it won't work. S'pose I *am* tired yet...

Tim

 

[karma]

mine is older but you can braze weld with it and more cost me $100. i have had it for 5 year's now it's worth the money


http://www.bernzomatic.com/bernzoma...OUKYRDXB4CQHUCBCF3QKA4QGIIY4?_requestid=87320

 

[karma]

here it is there high end model

 

[Magura]

To join aluminium you can use a torch like that for fusion welding. Technoweld have some little kits for that purpose, that comes with a good beginners manual.

Ive been building bicycle frames like that once, just to see what happened....and it worked rather well.

Magura

 

[li_gangyi]

actually I have found welding with a standard torch on aluminium difficult...hold it too long and it'll burn through the metal...duhz...

 

[Sch3mat1c]

Oh, I was going to add, oxy-acetylene (O/A) can weld steel but oxypropane won't work. I don't know why, I'm not a weldor. Works fine for cutting though. AFAIK, anything with enough concentrated power (arc, O/A, O/P I guess... possibly oxybutane to keep it on topic ) can do aluminum. As I recall, you need special fluxes for gas but arc is done on AC and that has a fluxing effect. Not to mention being under an inert gas.

Tim

 

[Brian Donaldson]

Oxy acetylene is too hot for aluminum. You need oxy hydrogen. Or better yet mig. Hobart sells a small mig setup for $650.00. you can also use it for steel up to 3/16" in single pass.

Stick with screws and rivits for aluminum unless you want to spend big bucks and lots of time learning.

 

[karma]

with my torch metal's fine aluminum no. i didnt say anything about that lol. it would burn a nice hole in it

Possible to weld metal with small butane torches????

yes u could if it's metal and hot enuff

aluminum? brian has a point use screw's. or pay $650 ouch


http://www.millerwelds.com/education/library.html

 

[purplepeople]

Epoxy. Cheap and no extinguisher needed.

ensen.

 

[Magura]

Epoxy. Cheap and no extinguisher needed.

ensen.

No extinguisher needed...at least till you mix bigger quantities in a cup or the like

Magura

 

[Tmak]

If I get a torch from Bernzomatic: http://www.bernzomatic.com/bernzoma...OUKYRDXB4CQHUCBCF3QKA4QGIIY4?_requestid=87320

which one would I have to get in order to attach a steel plate to a stainless steel piece?

I'm looking towards welding a logo onto a large stainless steel piece.

Thanks

 

[Sch3mat1c]

You need something oxy. Oxy-MAPP can weld, I believe. O/A obviously can. Oxy-propane can't (it gets hot enough, but I've never heard anyone say they have done it effectively). Any gas and air cannot weld, such as the torch on the page you linked. Solders quite well though.

Which reminds me, you can solder with these torches, and braze (at least with a large one). Is there any reason why you can't use that instead? You can get fluxes for stainless, relatively strong silver-bearing solders, and the heat won't discolor it. Brazing uses lower temperatures than welding while providing nearly the same strength, and you can get a color match.

Tim