Mig Set Up, Need Help
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Joined: Jul 2003
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From: Independence, MO
Mig Set Up, Need Help
Hi, guys, i have a Linclon WELD-PAK 100 welder and love it, it works great! I just got the mig conversion kit for and have it all set using Argon mix C-25, My problem is that i cant find in the paper work anywhere as to what flow rate to set the regulator at, Can any of you certified welders help me with this? Please, if you dont know please dont guess at, I could do that my self. 
Thanks DW
Thanks DW
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From: fremont ohio
Yeah, I set mine at 25. a little higher if welding outside. There's not really a precise setting. In fact, my guage broke on mine, I just go by sound, if it sounds like its blowing too much gas, I turn it down a bit.
Laughing Gas
Joined: Apr 2003
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From: La Ronge Saskatchewan
How can you tell if the polarity is correct. Mine was flux wire, all i did was change spools and turn the gas on (Cemont brand welder). What happens to the welds if the polarity is backwards ??
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From: Independence, MO
Okay well i i guess i'll just play with it some, i just didn't want to waste gas. And i did change the polarity, I've mig welded a little before, but some else set up the machine.
Thanks for the imput. DW
Thanks for the imput. DW
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From: fremont ohio
Originally Posted by laynrubber
How can you tell if the polarity is correct. Mine was flux wire, all i did was change spools and turn the gas on (Cemont brand welder). What happens to the welds if the polarity is backwards ??
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Fleet Mechanic
Joined: Jul 2000
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From: SE Iowa
I wouldnt the gas below 25psi. There is more to a shielding gas than just removing oxygen from the welding environment. It also aids in the depth of penetration. Besides, once you have the bottle, gas is cheap! For a 40 cu. ft. bottle in my area its $18 for a refill and $25 for a 80 cu.ft. So dont worry about wasting gas.
Stryder
Stryder
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Tuned
Joined: Sep 2003
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I am not sure how the amount of gas would effect penetration but the type of gas does. CO2 digs deeper than C25 and for sheetmetal its one of the reasons to use C25 as well as some slightly better metalurgical properties.
Elder User
Joined: Mar 2003
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From: Hendersonville, TN
Use as little as possible. Turn down till you get porosity and then back up just a little as suggested by Sberry27. CO2 will give a hotter weld but more spatter. The C25 is probably the best compromise and is the most common mixture. Good call on the polarity change too. Confirm with a voltmeter if unsure. Having it backwards will result in less penetration and more heat dissipated in the mig gun itself.
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From: Independence, MO
thanks for all the help guys, wow what a difference, the welds are much smoother and cleaner. I've been working with 16ga sheet metal the last few days building me a storage box for the bed of my truck, I'try to get some pics in a few days, i thought it looked decent for my first atemp at something like that! DW