[TheForge] TheForge Digest, Vol 62, Issue 2

[ironstash at comcast.net]

May I ask what wire you are using and what machine you are also using? Most of the guys I know use a 90 / 10 mix, but not out of position. 

Alfred 





> 
>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 
> 


Paul Boulay 
408-483-1986 
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