[TheForge] Question about MIG welding, spray deposition?

[Peter Fels & Phoebe Palmer]

I've been trying for this since reading about it years ago.
I lacked the amps and specific info to make it work.
Woolley kindly gave this link
> http://www.welding-advisers.com/Mig-welding-tips.html
The pertinent chart is here
> http://www.welding-advisers.com/PRACTICAL_WELDING_LETTER-PracticalWeldingLetterNo24.html
For 1/4" ( i assume single pass) they list 700 IPM , 280 to 350 Amps,and 
31 to 34 Volts!...035 wire
HONK! deposition rate is 11#/hr.
That must leave me with a duty cycle time of about 12 seconds!.
Try that Andy..pf



Andy Gladish wrote:
> Right now for me it's like forge welding once was- a miraculous operation  
> that some folks do but I don't know how to make happen. I've tried just  
> turning the steam way up on my millermatic but odd things happen that  
> don't resemble what you're describing.
> If you should feel like it, how about settings for spray on a given  
> material, such as 1/4" plate?
> Thanks for your input Pete!
> 
> On Tue, 03 Mar 2009 09:54:57 -0800, Peter Fels & Phoebe Palmer  
> <artgawk at thegrid.net> wrote:
> 
>> Andy and James:
>> I'm the wrong person to answer but that's never stopped me before.
>> So far as i can see at this point, the main advantages to spray
>> deposition are that it's faster, low spatter and better  penetration..it
>> also seems to be less sensitive to the odd bit of rust and crud.
>> The web site was talking .035 wire, 420 to 700 IPM wire feed speed, 180
>> to 350 amps, and 25 to 34 volts..electrode positive.
>> They suggest getting spray with the volts a bit low and upping the
>> voltage till the noisy crackling sound quiets some and the bead flattens
>> some..too high and it gets quiet and the puddle gets runny.pf
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