How to Weld with Oxy-Acetylene
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- Опубліковано 23 сер 2024
- NAIT Video describing how to safely weld with an Oxy-Acetylene torch, flux and filler metal.
All rights to this video belong to Northern Alberta Institute of Technology. Sharing for educational purposes only.
They sure as hell don’t teach this kinda stuff anymore!!! FANTASTIC VIDEO
I’m in school for welding right now and the first 3 months were entirely based on oxy acetylene
I went to NAIT for my welding, and this OAC vid helped me much, in 2003 or so, and I love it. Thank you, wanna show it to the kids... and gonna
Thanks for uploading all of these, I find them entertaining.
NAIT is an outstanding school in Edmonton, AB. I think the Stanley cup was there for the Dynasty of the Oilers when this was recorded!
i believe it is correctly said 04:08 (mono-)carbon-di-oxide CO2 but wrongly written C2O (di-carbon mono-oxide)
first stage of combustion:
C2H2 + O2 = 2 CO + H2
second stage of combustion:
2 CO+O2= 2 CO2
2 H2 + O2 = 2 H2O (or, H2 + O = H2O)
Really nice to upload all these videos! Thank you. The guy at 2:15 min, has a Finnish flag on his chest :O ( Im from Finland). I know that we have a lot of knowledge about welding, specially oxy-acetylene, still here, and it looks that it was so, many, many years ago also...
Thanks for watching, I have a lot more videos to upload so you may see that guy again!
Not to my knowledge: using only acetylene (using a proper air aspirating acetylene nozzle) you may solder and braze but not weld steel nor cut it.
Way to burn up forty seconds of my life before you start the video.
No kidding, If only there would be a way to fast forward the video!
So Silly!
Hahahahaha yeah
If you were THAT busy, you wouldn't take another two minutes to complain! Let them have some fun! Not that many people are interested in gas welding, I can indulge them a little!
Does anybody know what the make up of this flux is? I have never used flux on Oxyacetylene welding of mild steel.
That wasn't steel. It was cast iron. As for the flux, borax.
There are thousands of materials you can use that bind with oxygen, like sand , or wood, etc
@@erikd4461 Also there are special cast-iron fluxes of commerce. Those rods aren't so common now, but still available if you look.
@@leonardpearlman4017 Hi Leonard, although this discussion is over two years old, I believe the OP was asking about flux for torch welding mild steel. Mild steel can be welded with oxy acetylene without a flux, so I pointed out he was not using mild steel for the coupon material, but he was using cast iron, in which torch welding cast iron is generally done with a flux, most commonly borax. However if I were to torch weld mild steel I would also use a flux as it will generally provide a sounder weld deposit with better esthetic quality as well. I have came across and used pure cast iron torch welding rods years ago, just like what is being used in the video. However I would be lying if I said what the flux composition was in the flux I was using as it was a "proprietary" branded flux. But a basic deoxidizer like borax does provide more then enough fluxing action and protection for satisfactory welding results on cast iron torch welding. The "brand" name flux I used if I recall did not provide anymore measurable benefit over borax from my experience. However from my experience torch welding cast iron with cast iron rod has minimal advantages in the vast bulk cases with regards to cast iron torch repair are from my knowledge aren't used in todays modern world for many cast iron torch repairs. One place where they would be needed is in applications where the cast iron has a high enough working service temperature that a brazing alloy would not provide enough strength at the elevated temps or in some extreme cases become plastic and weaken or turn fluid and melt out and fail. Cast iron internal combustion engine exhaust valves or cast iron turbocharger turbine housings come to mind. However if that is the case I would normally avoid torch welding the casting and move directly to smaw with a high percentage nickel bearing alloy such as NI99. I suppose the torch welding of cast iron would be best for highly restrained castings where they have a high service temperature requirement and where because of the restrained nature of the casting, stress cracking would be a problem with a cold smaw cast iron weld repair with a nickel based filled. In that case the high heat input of the torch based cast iron welding into the casting would provide stress relieving effect. But again I would opt for a hot "preheated and soaked" smaw cast iron repair with a nickel based filler over a torch based cast iron weld. The cost of acetylene being so great, at least in these parts of the world, it would be cheaper most likely for a NI based hot smaw repair using a LPG tiger torch for preheating and heat soaking the casting. Generally torch welding is a dead art. This video being very old and dated, although still very valuable. as such allot of torch welding is predominantly used for teaching manipulation and control in apprentices nowadays in vocational trade schools. It really has minimal commercial uses anymore. That is not true for torch brazing, which is still hugely used today and will be for many many years to come.
Subsequently most cast iron torch repairs today are being done by a bronze type or nickel silver type braze alloys. If anyone is interested in cast iron torch welding rods and a suitable flux I believe TinMan Tech sells them still.
Nor I.
Not even in my high school metals shop class.
What material-metal are you welding?
That's cast iron, and a cast iron "rod". And MISTER COUPON!
Tig comes close to gas welding or oxyacetylene welding. Tig is next best if no electricity in the job site. At all . What u going to use with no more electricity is available. That happenes in the field. Generator has exhausted all it's fuel. Only thing u got is oxyacetylene to do the weld .
No electricity to weld in the field what do u do ? With welding on all are electricity but gas or oxyacetylene welding is your last thing to do. What do u do without it. But you have only electricity to weld nothing more .
nice challen
You stole this video from bait