[TheForge] TheForge Digest, Vol 62, Issue 2

[Cindy and James]

I have wondered about the mig spray process myself, and only have pure 
co2 and 75/25 mix gas to use.  My Lincoln 215 likely will not run hot 
enough to do the spray, but my trailblazer w/ portable wire feeder will, 
but just WHAT am I accomplishing??? and how is this better than just 
simply making a good weld in the first place?  I  would like to know.
JA
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> Been trying to figure out MIG spray deposition now that i have the 
> power to do it.
> Using .035 wire and argon75% CO2 25% mix gas. Electrode negative.
> If i crank it up to about 400 ipm and about 25 volts i get spray 
> deposition as i imagine it to be, but the nozzle and contact tip seem 
> to foul pretty quickly.
> Part of the problem was the awkward position  of the welds and a sore 
> back...which contributed to the fouling i'm sure.
> Looking on the web, they were talking about a different gas mix ( i 
> was using what i have and can easily get) and electrode positive setting.
> Is that right? I keep imagining the wire fusing to the contact tip as 
> soon as the trigger is pulled with electrode pos.
> Can the gas  i have be made to do spray deposition decently?
> Sure appreciate having you folks around to straighten my path every 
> now and then...pete f
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