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03-25-2010, 09:48 PM
| #1 |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
|  Propane Brazing
Would a propane torch work for brazing? I now it works for soldering. Would I use a simular filler as soldering? Related question, Can aluminum be brazed and is there a special procedure as with tig? |
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03-25-2010, 10:26 PM
| #2 |
| Rock Crawler  Join Date: Mar 2008 Location: 920 Valley of the Fox
Posts: 768
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Use mapp gas. Propane just wont cut it. Don't let Hank Hill fool ya,-PROPANE SUCKS  (when it comes to brazing or grillin' )and yes Alum. can be brazed. I personally have not tried yet-but I do have some alum. rods... |
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03-26-2010, 06:47 AM
| #3 |
| Quarry Creeper Join Date: Nov 2007 Location: NH
Posts: 427
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I hear this all the time and I beg to differ, I use propane 80% of the time when building my chassis, bumpers and what not. Bumpers I make from 1/4" solid rod and its brazed with a propane bottle. I am by no means a professional chassis builder, but I've built at least 4 chassis and all kinds of bumpers for my rigs and I've only had a few small failures mainly because of the lack of trianglated support. I will say that mapp gas is a little faster to use, but to say that propane does not work is not a real good answer.
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03-26-2010, 07:25 AM
| #4 |
| Quarry Creeper Join Date: Feb 2010 Location: Knee deep in a creek with a fish on the line
Posts: 456
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I just got a Mapp gas/Oxy tourch from home depot that works great, and it was cheaper then the straight mapp gas set up. I also talked with the guys at the welding shop, and they all said propane will work fine just takes a bit longer, but on the flip side it is 1/2 the price of mapp gas.
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03-26-2010, 09:08 AM
| #5 | |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
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03-26-2010, 09:57 AM
| #6 |
| Newbie Join Date: Mar 2010 Location: Beaumont
Posts: 32
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I just invested in to equipment and some brass rod to start my build. I went with Propane due to cost since it will do the same thing just a little slower! I have my plans but to be honest I am worried about weight with the 3/16 solid brass rod. I also got a sheet of aluminum to build some side panels to make it a little more realistic. I haven't started melting anything but looking forward to it. I need a solder/torch mat or a steal plate.
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03-26-2010, 10:13 AM
| #7 |
| Quarry Creeper Join Date: Dec 2008 Location: Australia
Posts: 239
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i have a bernzomatic propane, and a mapp fatboy. The propane works fine on the 3/16 brakeline Ive been using, but when Im brazing on brass sheet I use the mapp |
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03-26-2010, 11:22 AM
| #8 |
| Rock Stacker Join Date: Dec 2009 Location: Clemson
Posts: 67
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Propane is hot enough to braze steel.. The only problem is that it will take longer to heat up, so you will go through more gas. You don't really have to worry about melting the steel, which is a big plus when you are learning. Ideally, use the smallest rod possible and melt it with the hot steel rather than the flame. You can use the flux as a temperature indicator. When the flux is molten, the steel is hot enough to melt the rod (assuming the rod and flux match and the rod isn't too big). It is possible to weld aluminum with propane, since the flame (~2500F) is hotter than the melting point of aluminum (1220F). Aside from TIG, propane would actually be the best choice for small scale work due to the low heat and neutral flame. It is important to hit the aluminum with a scotchbrite pad to clean off the surface layer of aluminum oxide before welding. You should be able to find Harris bare aluminum rod at a local Tractor Supply Co. or welding shop. Copper alloys like brass and bronze can also be welded with propane, though 3/16in solid will take a long time to melt. You will probably want to consider a silver-based brazing alloy for that purpose. It will result in a fairly heavy chassis, so don't go crazy with bracing. Concentrate on good joints and you won't have any strength issues. |
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03-26-2010, 11:43 AM
| #9 |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
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I'm gonna try to do a trailor before I attempt a chassis or cage. I feel a trailor would be a bit easier to learn on cause I know how to mig a 1:1 trailor together.
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03-26-2010, 01:53 PM
| #10 |
| Quarry Creeper Join Date: Feb 2010 Location: Knee deep in a creek with a fish on the line
Posts: 456
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do yourself a favor and get the harris 45 saftey silver. The bras will be a PIA to melt, and i think the silver has a higher strength. I used brass then the silver, and I will never use the brass again.
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03-26-2010, 02:13 PM
| #11 |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
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For more info Im gonna be using alum. and steel, cause I have sheets of those around the house.
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03-26-2010, 02:58 PM
| #12 |
| Rock Crawler Join Date: Feb 2009 Location: On the "ROCKS"
Posts: 571
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Not today or tomorrow!  |
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03-26-2010, 02:59 PM
| #13 | |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
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03-26-2010, 04:55 PM
| #14 |
| Rock Crawler Join Date: Jun 2008 Location: Naples
Posts: 609
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Here is all the info on brazing, material, equipment, charts tables ect. http://www.handyharmancanada.com/The...ents.htm#Index |
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03-26-2010, 05:06 PM
| #15 | |
| Quarry Creeper Join Date: Sep 2009 Location: Ukiah
Posts: 280
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03-26-2010, 05:24 PM
| #16 | ||
| Rock Crawler Join Date: Mar 2008 Location: 920 Valley of the Fox
Posts: 768
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I use mapp & I am actually thinking of getting a Oxy/Mapp setup. Propane may work but it takes too long to heat up, Mapp takes long enough IMO...
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