- Thread starter drsixty7
- Start date
Up your gas flow.
It's difficult to see what it looks like with all that oxidisation on it and the out of focus pic doesn't help either.
It looks like you deviated off the line and weren't consistent in your 'pulses' though.
Cheers Wozzaaaah, I'll give it another dress rehearsal before I hit the stage.
Mick
madjakmclaferty
Member
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Spent the last few days welding my old camper which is pretty thin in places. Only way I could do it was to weld in really short pulses, stitching it bit by bit. Welding on to steel thats rusting from the back is always going to be a problem as you don't know how thick it is. Trying to do too long a run will build up heat and blow a hole.
Distortion is also an issue in the cosmetic work, take it slowly. And make sure you really clean all the old rust/paint/isopon/tar/inderseal/selotape or whatever "the previous owner user to get it through it MOT" off to clean shiny metal before welding. Easier said than done in some places!
Distortion is also an issue in the cosmetic work, take it slowly. And make sure you really clean all the old rust/paint/isopon/tar/inderseal/selotape or whatever "the previous owner user to get it through it MOT" off to clean shiny metal before welding. Easier said than done in some places!
Thanks for the advice, doing 66 beetle actually, you don't have to dig too deep to find a VW connection. Had another, more successful try at pulse welding last night, pics to follow later. Getting more frustrated now by the limitations of disposable gas bottles. Looking for a refillable option instead.
Mick
madjakmclaferty
Member
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I got a argoshield light bottle from my local supplier at a very reasonable price only 12 quid for a refill.
Just popped into a place in staines but he's a BOC supplier and wanted £54 for annual rental plus £30 for a cylinder, and £60 on top for a regulator. Just found a site that does the regulator alone for £16. Wouldn't mind if the welder was mine but it's borrowed from a mate!
Mick
Not blowing holes anymore and spoke to a kindly old welder who told me that back in the day all mig welding was done with c02, it's a bit of a knack and welds at a much cooler temperature than argon. So I'm now on the prowl for a pub gas set-up as I think I'm almost ready to start the job, what do you guys think?
Check out the middle 2 welds on the pics below
Mick
Check out the middle 2 welds on the pics below
Mick
shenion
Tool Pack Rat
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- Stone Mountain, GA USA
CO2 adds heat to the weld pool and increases its fluidity. Argon actually cools it.
CO2 penetration is wide while argon is deeper and narrow. CO2 does reduce the current some.
Stick with an argon mix, with CO2 you will blow bigger holes.
CO2 penetration is wide while argon is deeper and narrow. CO2 does reduce the current some.
Stick with an argon mix, with CO2 you will blow bigger holes.
Cheers, Shenion, seams like just as I've made my mind up to go Argon mix, someone suggest going with c02, then I get a great explanation like yours and I'm all confused again. Basically I want to try and avoid spending £000's on little disposable bottles but also it seems equally expensive to sign up with BOC, take out a yearly rental, blah, blah blah.
Mick
shenion
Tool Pack Rat
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- 7,586
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- Stone Mountain, GA USA
CO2 doe reduce current a bit, may help on some machines. In reality, i found both were about the same, just they blow holes differently. CO2 will have a big area just drop out. Argon mix tends to cut a slot.
I bet you guys are jealous of us on this side of the pond. I have 2 big tanks, no rental so they cost me nothing just sitting there
Oh, also have Oxy/Acetyl tanks that cost nothing.
I bet you guys are jealous of us on this side of the pond. I have 2 big tanks, no rental so they cost me nothing just sitting there
Oh, also have Oxy/Acetyl tanks that cost nothing.
jugs
Dont wish to offend & annoy, but...
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I bet you guys are jealous of us on this side of the pond. I have 2 big tanks, no rental so they cost me nothing just sitting there
Oh, also have Oxy/Acetyl tanks that cost nothing.
Is this why it's called the land of the free ?
madjakmclaferty
Member
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- 34
I got argon co2 mix like argosheild light but not from BOC, from a local supplier. £35 for 3 years cylinder hire (5Litre) £15 for the deposit and £15 to charge the cylinder with gas. 65 quid one off payment and recharge at £15 a time and no adittional charges (for three years). BOC are a bit steep.
A very exciting day today. Took delivery of 10litres of C02 and married it up with the regulator I bought from Weldequip and couldn't resist having a quick blast. Initially laid a great weld on top of some thin steel and it went on nice and smooth with great penetration too. Naturally I thought to myself I'd cracked it so tried a quick butt weld, the spots were Ok but blew a few holes when filling in. I was trying all of this with the same settings that were successful using the argon/c02 mix ((1)/2, (min)/max, wire speed 4) . So tonight I need to try and find new settings for this c02 setup. It does spatter a little more than the argon mix but the weld is a nice bright silver colour and it's a damn sight cheaper than the disposable bottles (£40 deposit and £20 for a full cylinder, delivered and inc VAT). Pics of tonight's practice session to follow. Any tips on pure c02 welding gratefully received.
Mick
Mick
Wozzaaaah, I it's what was loaded up when it arrived, .8mm.
