Back to welding

[fridgeman999]

Hi, have watched this site for a while, now thought be polite and introduce myself.
Live in dorset, hate rainy weekends.
Found the site via malcome,and clementine, yes i have a R4gtl, just begging to be welded!!!!!!!
Should not be a problem, did evening classes, thirty years ago, in gas, mma, and mig, and just love gas, very civilised way to weld.
The mig i was used to, was esab, big as a bungalow, but got nice welds.
Yes should have found this site years ago, but had some spare money few years ago, and bought a SIP mig welder
Just about to sign up for a large bottle of gas, or as i call it being mugged.
Will start with the Sip, but looks like, fool and his money etc, the question is, should i buy a new clark, or second hand Murex, etc, only need 240v, but will be used on very low amps.
Last thing use oxy propane, for silver solder in my business, now see same kits being sold as welding kits, have tried, but nowhere near hot enough. Is it Mapp gas, that makes the difference?

Happy welding
Chris.

 

[zardoz]

Greetings. I also did a welding course 30 years ago with gas/mma etc. Didnt do me any good though, as i forgot it all by the time i got another welder 4 years ago! Dont buy anything else yet. See how you get on with the SIP. Some people have reported doing ok with them. As for oxy propane, it is not hot enough to weld, only braze, or heat, or cutting with added oxy and special torch. I think maybe the MAPP gas is a bit hotter yes.

 

[Hitch]

Welcome to the forum Fridgeman, i gather you must be a refrigeration engineer?

Im just across the border, which bit or Dorset are you from?

For actual welding, i dont think mapp is suitable either, i think it has something to do with the flame, it makes too much hydrogen when burned, iirc.
Okay for brazing though.

 

[Rubber Duck]

Ohh some one else from Dorset!

 

[Omniata]

Welcome to the forum Fridgeman, i gather you must be a refrigeration engineer?

Im just across the border, which bit or Dorset are you from?

For actual welding, i dont think mapp is suitable either, i think it has something to do with the flame, it makes too much hydrogen when burned, iirc.
Okay for brazing though.

Yeah not much use, the secondary flame is equivalently way hotter than the primary as opposed to that of acetylene and the area around that to be welded tends to melt before the bit you want to weld.
Although it is used in industry in Germany and other parts of europe as it can be stored liquified as opposed to acetylene which needs to be dissolved, it's explosive limits are a lot more forgiving as well...
ie: You get more gas in you cylinder

There's an alternative here in the UK, propylene or Apachi by Air Products, quite a bit hotter than propane with oxygen but still not quite hot enough to weld I don;t think.
Might just about manage thinner section though or faster cutting...
It's targetted more at the chemical and polymer industry...

Edit: Oh and welcome to the forum

 

[ESTAlfisti]

Hello and Welcome to MIG Welding Forum!

Reijo

 

[malcolm]

Do post photos of the Renault as you get going. I have a little SIP (I use it for experiments) and it works a bit with a steel liner but isn't brilliant. Others have reported big improvements by supplying the wire feed motor independently from the main transformer.

Murex would be nice if it has a fairly low minimum current and isn't an agricultural machine. It's a steady minimum current that's important for elderly Renaults constructed from tin foil. Clarkes might be a bit fierce.

Clementine says hi.

 

[fridgeman999]

Hi, thanks for the welcoms.
Yes i am a fridge engineer, hence the question about oxy/butane, use it every day, thought the advert for gas welding was misleading. ( Omniata, wish i paid more attention to chemistry at school, rather than metalwork!!).
The R4 resto is on hold at the moment, as i need to find her a barn/workshop to rent. Think its a body off job, thanks for the site Malcom, how does Clementine keep her paws clean?
Hitch, i live about 3 miles north of Blandford Forum, small village called Shroton, but also called Iwerne Courtney, we are strange in Dorset!!! Keeps the postie on his toe's.
Regards Chris.

 

[zardoz]

Hitch, i live about 3 miles north of Blandford Forum, small village called Shroton, but also called Iwerne Courtney, we are strange in Dorset!!! Keeps the postie on his toe's.
Regards Chris.

lol. brilliant!