welding gas

channi · Dec 17, 2014

brittle welds brought up by thor

ronsealdeath · Dec 17, 2014

I used one a foam fire extinguisher and got brittle welds.......

ronsealdeath · Dec 17, 2014

I did a bit of research on this and for my circumstances the volkzone boc y bottle offer is best deal about. Luckily I have an argon regulator to fit. Ring boc and ask them about the offer its cheap if you are going to be welding a lot. But yes pub co2 or any co2 will do, I just cant get hold of any and boc is near my work so easy.

channi · Dec 17, 2014

i will have to look into it

cheers bud

Dippypud · Dec 17, 2014

Have a read up on 'Adams Gas' ...

listerdiesel · Dec 17, 2014

Have a look at this for interest:

MIG Welding Gas Comparison

Peter

Chrisw8 · Dec 17, 2014

+1 for Adams Gas

b20wnx · Dec 17, 2014

timtheenchanteruk said:
not sure why CO2 would cause brittle welds, AFAIK the gas is to sheild it from oxidising, CO2 is good at this, Argon better, as a result you need less argon to sheild than you do CO2???
Seeing as a big pub bottle costs me around £11 a fill, and everyone else I know uses CO2 for general work, Ill stick with CO2 unless somone can give me a good reason not to

Tim where do you get the bottles and refills? + how much?

leeby7 · Dec 18, 2014

Yes my questions the same I have a pub bottle where can you get refill?

cheers lee

timtheenchanteruk · Dec 18, 2014

Im on the comittee of a local club, I get the steward to order me one in when hes doing a gas order, if your friendly with a local landlord, they will probably do the same

Like I said refills are £11 and most companies dont do bottle deposits any more, but if they do they are usually around £20 a bottle.

timtheenchanteruk · Dec 18, 2014

listerdiesel said:
Have a look at this for interest:

MIG Welding Gas Comparison

Peter

Interesting reading there, cheers.

Might get meself a little bottle of mixed for tidier welds when I need em, but tbh I bought me welder mainly for the chassis, so the bit of untidyness doesnt really matter, and its still infinatly tidier than gassless.

listerdiesel · Dec 18, 2014

We proved the worth of the mixture when the boys did the 109" chassis a few years back, it was so much nicer to use, although having the big 250A MIG welder helped a lot in that respect.

We get full-size Coogar bottles from one of our metalbashers, we pay the rental and for the gas, but a big bottle lasts up to 2 years for what we do. Saves us having an account with Air Products.

Now we have the additional TIG unit we'll probably look at a second bottle, that or arrange a split feed from the existing one.

Peter

b20wnx · Dec 18, 2014

timtheenchanteruk said:
Im on the comittee of a local club, I get the steward to order me one in when hes doing a gas order, if your friendly with a local landlord, they will probably do the same

Like I said refills are £11 and most companies dont do bottle deposits any more, but if they do they are usually around £20 a bottle.

Ty

channi · Dec 18, 2014

listerdiesel said:
Have a look at this for interest:

MIG Welding Gas Comparison

Peter

interesting read i must admit how sad it sounds but i do like a tidy weld over a splatter looking one but then the grinder is a welders best friend

listerdiesel · Dec 18, 2014

When the boys were getting the 109" Safari Wagon chassis repaired, they got through a lot of gas and a lot of MIG wire:

That chassis was almost rotten through and through, we got through a lot of 14g new steel to make it good again.

Peter

Thor1950 · Dec 18, 2014

why would they patch with a thinner steel than original?

pressbrake · Dec 19, 2014

listerdiesel said:
We proved the worth of the mixture when the boys did the 109" chassis a few years back, it was so much nicer to use, although having the big 250A MIG welder helped a lot in that respect.

We get full-size Coogar bottles from one of our metalbashers, we pay the rental and for the gas, but a big bottle lasts up to 2 years for what we do. Saves us having an account with Air Products.

Now we have the additional TIG unit we'll probably look at a second bottle, that or arrange a split feed from the existing one.

Peter

you need pure argon for tig as you need a active gas
i love the term metal basher

listerdiesel · Dec 19, 2014

Thor1950 said:
why would they patch with a thinner steel than original?

That was what the chassis was made of, apart from some 3mm stiffeners.

Peter

listerdiesel · Dec 19, 2014

pressbrake said:
you need pure argon for tig as you need a active gas
i love the term metal basher

Argon organised

Peter

timtheenchanteruk · Dec 19, 2014

pressbrake said:
you need pure argon for tig as you need a active gas
i love the term metal basher

Surely the point of argon is it isnt an active gas? chemically speaking it reacts with naff all, being one of the noble gases, presuming with welderficating, it prevents reaction with O2, so make all the heat go into the metal, as apposed to CO2, where a very small amount will break down to Carbon and O2

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