Using Lpg to heat up metal

[Mattt]

Hey guys

I have recently been setting up my garage with some gear and i want something that i can heat up metal with thats cheap and doesnt cost to have on hand if i'm not using it. I noticed Super cheat have some oxy acetylene kits on clearance and i was wondering if i would be able to use LPG only through the kit to heat up metal for bending / shaping or whether i would have to use oxy aswelll. I know you need oxy and LPG for welding but will it heat ok? The main thing i have in mind at the moment is i want heat and mould slightly my inner guards as my new tyres rub SLIGHTLY on the inside. (73 crown) so maybe 2-3mm thick panel steel.

[UTERUS]

http://www.trademe.co.nz/business-farming-industry/industrial/manufacturing-metalwork/other/auction-570124044.htm

[Mattt]

that would be sweet but was hoping to use a 9kg bbq bottle...

[Llama]

Regs are pretty cheap afaik. Either that or look at the mapp kits.

[Llama]

Also,

http://www.trademe.co.nz/business-farming-industry/industrial/manufacturing-metalwork/other/auction-570392596.htm

[Mattt]

those cylinders are fucking expensive when compared to the bbq bottles hence why i want to use 9kg bottle. i've found an adaptor from 9kg to camping so that torch uterus listed will work sweet. I'm taking it from the responses that it will get hot enough for what i'm wanting to do?

[spangleR]

We just use lpg and oxygen and works fine for bending,beating and getting stubborn bolts out. Can't cut put sacrifices have to be made.

[Mattt]

wont get hot enough without oxy though?

[Bling]

I'd be suprised if it did TBH, I weld copper with just LPG and even that takes it's time to heat up. I don't know the temps it will produce or what temps you'll require though. I can probably give it a try on some scrap next week if you PM me to remind me (next week).

I'd just get a sledge in there.

[Mattt]

cool thanks man.

[spangleR]

I've tried it without ox but doesn't really do much in the way of heating just paints everything a nice black lol.

[Llama]

LPG burns hot enough to weld, it's just on larger bits (ie, bigger than jewellery sized) you are going to loose to much heat to the surroundings to build up the piece to temp.

[SOHC]

you might buckle and warp your panels if you used an LPG burner to heat your gurds, the flame is quit big. A normal oxyacetylene welding set up can be adaped to use lpg by counter sinking the tip holes a bit, even the cutting torch, its not as good as acetylene tho.

I do alot of steel,bronze,copper work and have made 2 home made lpg burners witch are 20 times better than anything you could buy, they will heat up big chunks of steel to a dull red in to time

[smokin'joe]

you might buckle and warp your panels if you used an LPG burner to heat your gurds, the flame is quit big. A normal oxyacetylene welding set up can be adaped to use lpg by counter sinking the tip holes a bit, even the cutting torch, its not as good as acetylene tho.

I do alot of steel,bronze,copper work and have made 2 home made lpg burners witch are 20 times better than anything you could buy, they will heat up big chunks of steel to a dull red in to time

if using LPG as you gas, why can one use compressed air ( from rattly in the corner ) as your oxygen supply, then use oxy/axcetylene gear ?? would save renting bottles.

[flyingbrick]

Because oxy in a bottle is much different to the gas you breathe

[Llama]

Pure oxygen is so volatile is will combust on it's on xD

Compressed air/LPG/Propane torches are probably better than the NA equivalent, but I'd say still wouldn't touch a oxy/fuel set.

[Rookie]

FYI Oxygen is neither volatile, nor will it combust.

[Testament]

however, pure oxygen will make OTHER things combust exceedingly easily. e.g. oily rags or cardboard or wood, your pants etc. etc. etc.

it's still got lots of dangers that need to be understood and respected.

[Rookie]

Tom knows whats up/is safety Steve.

[Llama]

Yeah, I had to google that but I can admit to being wrong xD