This is EXACTLY !!!! what I needed to know. Absolutely excellent. More oxy/propane please 👍🍺🇦🇺

@Welddotcom

Жыл бұрын

Glad to hear!!

I've been running propane for the last 12 years there is a little bit of a learning curve when you switch over but once you understand it its pretty much better all the way around. On a #1 tip I use 4psi propane 30 psi o2 and back the torch off about 2-3 times the distance you would use for acetylene. Propanes heat is further out in the cone than acetylene so you have to give it more room if the flame is making a star pattern on the plate you are too close

Nice video Paul. In industry, we used Propane (LPG) all the time to cut material up to 24 inches (special set up) thick with no problems. For normal cutting, with Propane/LPG I usually did not find it necessary to pre-heat. It just takes a little longer to bring the steel to ignition temperature. Just a couple of things you probably could have mentioned. Propane does not flash back like Acetylene. It can be stored in bulk storage tanks where Acetylene cannot. Propane is approx 2x heavier than air and will sink towards lower spaces or the floor so this can be a hazard. It would have been a nice for you to have demonstrated the correct technique to light the Propane/Oxy cutting torch as well. Although it is true that Oxy/Propane is cheaper than Oxy/Acetylene, you use twice as much oxygen. Acetylene equipment with change of nozzle can be used for Oxy/Propane, but it is advisable for long term use to use hose designed specifically for Propane/LPG. Propane gear cannot however be used with Oxy/Acetylene as it will flash back. Oxy/Acetylene is mixed in a mixing chamber while a dedicated Propane/LPG torch has an injector. Acetylene cannot be injected. If you used the same size nozzle to cut the 3/8" and the 1" material, that is more than likely why you got the adhering slag on the 1". I observed that you also used quite a rigid flame which was not really necessary, a less rigid flame would have produced the same result

@leerevell5998

Жыл бұрын

That's a good idea hope they can show this safety and how to and not to do it? 🤔

@Welder-vv9rf

Жыл бұрын

Better information than what was provided in the video. Thank you.

Thanks a lot boys, i'm currently working in a fabrication shop where propane is the only fuel available for cutting/heating, and the collegues there tend to use a 6 inches grinder to cut thick steel, so i was curious about the right pressure for propane to try and show them thermal cutting. Useful as always.

Thanks for the advice, Paul! I've never preheated anywhere except for the start of where I wanted to cut. I think your method of preheating the metal a lot more will greatly improve my cutting!

Thanks Paul we use propane a lot in the UK and your video was really helpful . Thank you

Thanks Paul, great tips.

I bought a set of torches that came with propane and was getting ready to get rid of it because I never heard of using propane until I saw your video, thanks I’m going out in the shop and try it again

I’ve used both and found that Propane not being as hot a flame requires a bit more preheat. These days I hardly ever use Acetylene or Propane unless I am cutting materials over 15 mm thick. We use plasma getting similar results. Plasma is great since you’re not using gas just compressed filtered air. Soon we will be getting lasers with our automated upgrade. With Oxygen Acetylene using a profile cutter material thicknesses up-to 100 mm I would cut with a smooth cut surface while I was an apprentice. It required preheating and descaling, the preheating and descaling before cutting. With propane 50 mm was achieved by continuous preheating during the cutting process. Dam I wish I didn’t figure out how to do that because they kept me on that machine for months at a time cutting parts for everyone in the workshop 😢.

Thanks 4 this invaluable information 👍

Actually those tips are mixed up easily by people that dont know the difference, glad you brought it up. Acetylene will melt that propylene tip.

I am so bad at oxy-fuel cutting I bought a high capacity plasma cutter. Now I get very good results! (Besides, compressed air is tons cheaper than oxygen and acetylene.)

@hifartingoctopuss

Жыл бұрын

Main advantage of oxy fuel for me is the portability, bottle of oxygen is cheaper than a 3 phase generator. Also useful for bending metal. I use plasma for cutting sheet metal.

@stovepipe9er

Жыл бұрын

I bought a plasma cutter as well. But I still need something for heating. Need to straighten damage, heat up rusty fasteners, cut a bearing off a shaft etc I still need some kind of o/a or o/p torch.

Thanks for this

We had to work with propane overseas. Had nothing but problems. But we only had acetaline tips. It worked, just not good.

Propane and Propylene both actually have a hotter secondary (or outer flame) than Acetylene which is why you hold the torch a little farther from the plate when cutting and initial heating for your start. In the end the total BTU value is just a little higher on the combined inner and outer flames for the acetylene but propylene and propane have much higher heat values on their outer Flames than acetylene When used correctly and we'll understood, the speed isn't much different at all. Where the difference is as well is with safety and economy since propane and propylene are much more stable and safer to start with and they consume more oxygen than fuel which is also less costly than Acetylene which consumes more of the fuel which costs more. The learning curve is a little hard at the start but I never looked back after switching to propylene myself. Why lug around a heavy gypsum filled bottle of acetylene when you can haul a lightish propane or propylene bottle that lasts longer. Well this is my point of view anyways

been out in shop trying to cut 1/4" angle iron, i used to do this in college but it wont even cut, gets red hot but black soot everywere, maybe i should get propane setup. in school i was able to cut thru 6" matl, o2 25, gas 5, not sure

Are the settings for propane and oxygen in PSI or kPa?

Can you explain? How and why it is also safer than acetalyne to use???? Thanks great video

Nice video. !!!

Many thanks buddy 🙏🏼🍺

very nice

what was pressure settings for 1 inch plate please. thnx

What's the thickness of the material first then you gotta move faster sounds like

So where did you set the gas pressure’s at?

Once the cut is started you don't even need the fuel; you can even turn it off and complete the cut. It's the oxygen that's doing the cutting. (I'm not saying it's a good idea. Know your equipment and follow safety rules.)

@hifartingoctopuss

Жыл бұрын

Try it. Doesn't work. Unless the metal is sufficiently pre heated it will quickly get too cold to cut.

@veljkosimic2793

Жыл бұрын

No...no you can't

@brapbrapmafucka

Жыл бұрын

You can use a welder to cut and you can cut using a welding tip on a torch as well lol

I'm a woman who's thinking about going into welding I want to be able to lift heavier things but until I can what would be the best welding choice or career for me? There are so many opportunities out there and I'm thinking of going to trade school to learn.

Hello. Doing oxy propane cutting with robot. What would be the result if torch is too close to material? The torch cuts, the result is a lot of slag on the back end. We are cutting straight cuts, and bevels. While it is cutting, the metal looks like it is melting like lava.

@leonardpearlman4017

9 ай бұрын

Well, one thing is the level of preheat. The tips are rated for that. There's the size of the tip, but also light, medium, heavy preheat. In tips for Acetylene this is easy to see, the holes around the central oxygen jet are larger or smaller. I'm not sure if this is done for Propane tips.

De lujo

Propane, and it’s derived gasses are easier for some companies to get insurance on then acetylene. I’ve worked at more places that use propylene then acetylene.

Curious as to why you say you must preheat... In 30 yrs I have never preheated for a cut, except when the material was thicker than my tip was designed for. Nice cuts.

@willgallatin2802

Жыл бұрын

Looked like he had an 0 tip. Works good for 5/8", not 1". Also propane is a bit colder, so yea preheat is a useful idea.

First step, start with a clean tip

there is also cutting methane + oxygen and gasoline + oxygen =) in Russia, it is very common in the north

👍👍👍

😍😍😍

How about aluminum or stainless

My opinion is oxy - propen and LPG best for cutting and heating

@hifartingoctopuss

Жыл бұрын

Acetylene is best for cutting, and is hotter. Propane is better for heating metal for bending or forging

@slhardmaster2514

Жыл бұрын

@@hifartingoctopuss I agree with you bro. But Safety is the best thing more than anything. LP and propane safety gases and economical helpful. That's what most people ask.

@Zigfried_von_Stahl

Жыл бұрын

Please, try methylacetylene-propadiene.

Chemtane2 is the best alt. fuel

like a bubbls without glasses ;)

Clean Clean Clean Clean Tip Clean Steel Clean Cut

I didn't know you couldn't weld with propane.

I,m confused. Is that a right or left handed wrench?😂😂😂

Propane almost 3 times the price it was 4 years ago, cheaper in this aspect, but not cheap.

@SouthernGround

4 ай бұрын

Elections have serious effects, TRUMP 2024 or prepare to pay more. 😮

❤❤🇸🇳🇸🇳

It’s seem to be harder to see the different in flame of the propane set up

I have been fabricating for over 55years, I was trained through an apprentiship. Any one who does not have a full understanding of these basics should not be in the trade or within a mile of this type of equipment. Go to trade school and be shown and taught in the best techniques. Way too many of these videos on KZread. Far too much information left out or ignored.

@jimw6991

Жыл бұрын

I don't think there are many apprenticeship programs in u.s. period. Trade schools are great but at the end of the day we are all teaching ourselves. I would agree lots of info missing, seems like this video blamed poor cut on too low pressure for both oxygen and gas but never considered improper mixing valve adjustments of flame, Only point I took away from this video was oxy propane has potential but I need to learn how to use properly.

this showed me nothing on instructional, lighting with striker, adjusting flame how long for preheat, height of tip from metal, and travel speed. Worthless video in my opinion.