Markminibike
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Can I weld with steel with a handheld blow torch?
as I do not want spend alot of money on a huge welding machine.
as I do not want spend alot of money on a huge welding machine.
steel welding
- Thread starter Markminibike
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exenos
Project Nut
If it's a oxy acetelyne torch then yes you can braze steel, if not then you should get a used stick welder since they are cheap.
Fallenleopard
New member
but if it is cheaper for you to but buy an oxy torch then i would do that, unless you see further use for a welder.
exenos
Project Nut
A torch by itself will probably be cheaper than the welder, but the gas bottles can cost around $500 so a cheap buzz box will probably be cheaper if he has to buy something, not to mention that brazing isn't ideal for a kart, you could probably get away with it but its not recommended.
souperman000
New member
With a hand held (assumingly propane) torch, no. Get a welder.
Jonester 123
New member
Like all welding machines it takes alot of practice to make good solid welds, oxyacetylene welding will work fine but you need to now how to use it properly and safely. Welders these days a fairly cheap for a descent quality machine, mig welder with the gas hookup and a bottle of argon/co2 mix for nice cleaner welds. You need the right equipment to do the job right, are you planning on working with steel to build alot of stuff, then getting a welder is a must in my opinion and 2 cents worth.
jfxwave
New member
If I was welding more I might buy this. You don't need any gas, it welds with rubbing alcohol and water, cuts with water only. Welds any type of metal and you don't even need a face mask just some suntan lotion. Don't ask I have no clue but I was looking at some YouTube videos about Multiplaz (Video 2) and it's very impressive. The last welder or touch you will ever need.
http://www.youtube.com/watch?v=h9HAGjR1IIU
http://www.youtube.com/watch?v=tb2wRSw-Ylg
http://www.youtube.com/watch?v=h9HAGjR1IIU
http://www.youtube.com/watch?v=tb2wRSw-Ylg
Doc Sprocket
*********
Nope. You now have a choice. Pony up a hundred or two for the cheapie Harbour Fright flux core welder, or pony up a hundred or two for somebody else to fabricate your frame for you. At least the first choice gives you a major learning experience, and the ability to build/modify other things.
souperman000
New member
http://www.diygokarts.com/vb/showthread.php?t=19080
Yeah, I heard about that a little while ago, pretty crazy. Too bad it costs a small fortune...
machinist@large
Active member
:toetap05:I'm in heavy industry; welding is just one part of my job. None of my suppliers have anything on this unit, and if they thought they could sell them and make money, they would be the talk of the town.
Until I see one in the flesh, and get to put it thru it's paces (we rebuild high tonnage stamping presses as just a part of our job where I work; if this thing is so great, we'll figure it out real quick) it's all just snake oil. Save your money and go shopping for more pedestrian hardware; it'll save you a lot of money/ greif.
Jonester 123
New member
I have three welders on my workshops, one little lincoln fluxcore machine, one lincoln 18o amp with gas hookup for argon/co2. The other is a snap on big stand up mig welder made for proffessional production welding 220 amp with gas hook up, also can weld aluminum with it. Worth every penny i paid for them all, about thousand dollars total costs for all three. Hard part is deciding what one to use for each job.
porsche930dude
New member
yes oxy/acetyelene or oxy/propane brazing works fine. Thats how they put together steel bicycles thats why you dont see any welds on them. its very strong
http://www.youtube.com/watch?v=l6HVJHsOGa0&feature=related
http://www.youtube.com/watch?v=l6HVJHsOGa0&feature=related
exenos
Project Nut
Oxy is not as strong as welding. Its basically just acting as glue while welding is truly fusing the metal together.
machinist@large
Active member
:toetap05: Oxygen/Acetylene brazing is not as strong: properly done O/A welding can be (and often is) as strong as Electric Arc welding.
Doc Sprocket
*********
Right- except the wording of the original post would seem to indicate a plumber's torch (throwaway propane cylinder like you use for camping). You ain't welding spit with that!
exenos
Project Nut
What uh Huh? I thought you could only braze with oxy acetylene? Whats difference between welding and brazing with a oxy?
devino246
Official DIYGK Chem Nerd
That applies to a select few bikes. Most are welded using wither GMAW or GTAW.
That video shows welding, not brazing. Two different processes.
Oxy what? Oxygen-acetylene can be used for soldering, brazing, welding, thawing, melting, cutting, etc. An oxygen-acetylene setup with a welding tip, using filler, is just as strong as any other welding process in most cases.
Just to clarify...
Braze: To solder with a nonferrous alloy having a lower melting point than the metals being joined. (Merriam-Webster)
Weld: To unite (metallic parts) by heating and allowing the metals to flow together or by hammering or compressing with or without previous heating. (Merriam-Webster)
Popular methods of welding in the non-industrial sector include oxygen-acetylene, SMAW (Arc), FCAW (Fluxcore), GMAW (MIG), and GTAW (TIG).
Methods of brazing include oxygen-acetylene, oxygen-propane, and oxygen-MAPP.
devino246
Official DIYGK Chem Nerd
See above post..
exenos
Project Nut
Is it as simple as that? Use a steel filler rod?
devino246
Official DIYGK Chem Nerd
Not really. Welding (modern, anyway) requires melting both work pieces in order to join them together, with or without the use of filler. Brazing, on the other hand, involves heating both work pieces to sub-melting temperatures. A filler metal with a lower melting point than the work pieces is then melted into the joint where it joins the work pieces together. The only difference between soldering and brazing is the temperature at which the process is performed. IIRC, anything under 1,800*F is considered soldering; above 1,800*F is brazing.
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