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I hope this isn't a double thread... I just hit submit new thread and then couldn't see the first thread I posted on the identical subject. So here goes again...
I have had a Millermatic 350P for about 5 years mostly welding 1/8" non-critical steel.
I now have to reposition two lower hitch attachment arms on a 42" Gannon Earthcavator box scraper which are 1/2" x 2" flat bar.
In doing my internet research I have come across everything from it "is not advisable" to "use gas shielded flux core wire" to get an "arc/stick machine." Here's a sample:
"I use a 350P at work and the chart says not recommended on it. You realize short circuit should be restricted to under 1/4 inch clean NEW steel. Short circuit welds 1/4 inch steel fine, for dumpsters, gates, tables, just general welding. You should not use it for trailer building, implement repair, truck and car repair. For these things you should be using the flux cores, specifically the gas shielded flux cores if possible.
I don't know what steel is in your implement attachement. To be safe i would use a low hydrogen rod, or a low hydrogen gas sheilded flux core, that multi passes.. high tensile steels, such as t1 are often used in booms and such, and are absolutly not to be mig welded. Mig wires offer little fatigue resistance, the impact of a loader bucket, concerns me, the repeated abuse will cause the mig weld to fail in the HAZ, heat affected zone, on high tensile steels.
"You purchased a wire feed welder, not a mig welder. wire feed welders will weld with solid wire in the mig, metal inert gas mode, using short circuit, pulse or spray. It will also weld all fluxcore wire types just as well. You will need a fcaw-g wire that will multi pass, because a 1/2 single pass weld requires around 500 amps. The 350p will not put out 500 amps."
I also searched here for "350P flux core" and came up with, among other things, this:
"The 350P doesn't have any parameters on it's front door chart for fluxcore wire, at least mine doesn't. It is intended for only in-shop use and has no pulse program for fluxcore either. I guess Miller doesn't really expect anyone to be using it for fluxcore welding.
It has mig and pulse parameters for solid steel wire and gas and aluminum and stainless wire, as well as some other alloys, I think copper and bronze, I never use the other alloys so not familiar with it that way. Parameters for running fluxcore in a 350P have to either come from a slide chart or from the wire manufacturer or from seat of the pants.
I have not run a dual shield wire in my 350P but have run fluxcore self shield, both in mig and pulse. I used the solid wire and gas parameters as the starting point and adjusted from there."
http://www.millerwelds.com/resource....php?18604-gas-shielded-flux-core-weld-faults
For an arc/stick welder the following was suggested:
"Arc welding is a lot easier in my opinion. And faster, especially for repair work. I would use a 6010 and finish out with lincoln 7018,s one with a D designation."
However, if it is advisable, to use my 350P to do structural work with the appropriate wire/gas combination, I would like to learn what to use and then practice how to use it...
I usually tell people that I am really a "grinder" trying to learn my way towards becoming a "welder" so, any help would be appreciated.
I have had a Millermatic 350P for about 5 years mostly welding 1/8" non-critical steel.
I now have to reposition two lower hitch attachment arms on a 42" Gannon Earthcavator box scraper which are 1/2" x 2" flat bar.
In doing my internet research I have come across everything from it "is not advisable" to "use gas shielded flux core wire" to get an "arc/stick machine." Here's a sample:
"I use a 350P at work and the chart says not recommended on it. You realize short circuit should be restricted to under 1/4 inch clean NEW steel. Short circuit welds 1/4 inch steel fine, for dumpsters, gates, tables, just general welding. You should not use it for trailer building, implement repair, truck and car repair. For these things you should be using the flux cores, specifically the gas shielded flux cores if possible.
I don't know what steel is in your implement attachement. To be safe i would use a low hydrogen rod, or a low hydrogen gas sheilded flux core, that multi passes.. high tensile steels, such as t1 are often used in booms and such, and are absolutly not to be mig welded. Mig wires offer little fatigue resistance, the impact of a loader bucket, concerns me, the repeated abuse will cause the mig weld to fail in the HAZ, heat affected zone, on high tensile steels.
"You purchased a wire feed welder, not a mig welder. wire feed welders will weld with solid wire in the mig, metal inert gas mode, using short circuit, pulse or spray. It will also weld all fluxcore wire types just as well. You will need a fcaw-g wire that will multi pass, because a 1/2 single pass weld requires around 500 amps. The 350p will not put out 500 amps."
I also searched here for "350P flux core" and came up with, among other things, this:
"The 350P doesn't have any parameters on it's front door chart for fluxcore wire, at least mine doesn't. It is intended for only in-shop use and has no pulse program for fluxcore either. I guess Miller doesn't really expect anyone to be using it for fluxcore welding.
It has mig and pulse parameters for solid steel wire and gas and aluminum and stainless wire, as well as some other alloys, I think copper and bronze, I never use the other alloys so not familiar with it that way. Parameters for running fluxcore in a 350P have to either come from a slide chart or from the wire manufacturer or from seat of the pants.
I have not run a dual shield wire in my 350P but have run fluxcore self shield, both in mig and pulse. I used the solid wire and gas parameters as the starting point and adjusted from there."
http://www.millerwelds.com/resource....php?18604-gas-shielded-flux-core-weld-faults
For an arc/stick welder the following was suggested:
"Arc welding is a lot easier in my opinion. And faster, especially for repair work. I would use a 6010 and finish out with lincoln 7018,s one with a D designation."
However, if it is advisable, to use my 350P to do structural work with the appropriate wire/gas combination, I would like to learn what to use and then practice how to use it...
I usually tell people that I am really a "grinder" trying to learn my way towards becoming a "welder" so, any help would be appreciated.
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