Miller Millermatic Flux cored MIG Welding

How the process works for both self-shielded and gas-shielded wires, and where to set polarity. http://www.MillerWelds.com

Category:

Howto & Style

Tags:

• MIG
• Welding
• Weld
• Welder
• Miller
• Flux
• cored
• GMAW
• FCAW

[farmboy30117]

I never realized that about polarity. I'll have to check mine.

[robvk6]

youtube lol... just download them...

[TheHossHobart]

Fluxcore welding is a lot like stick welding.

[mccunecp]

look liek a lot of work to just switch the polarty I get a high current switch to do the switching saving time and ware and tare on the termals every time you have to take the nut off and then take it off. but I like the video good infor to learn

[MrStevilKneivel]

Check Craigslist for gas bottles. I picked up a 125 CF 75/25 full for $100 with recent 2010 hydro test. The deals are out there if you look.

[wwwweldercvfi]

Very good !

[TSorovanMHael]

@patron4life1 Most weld gas suppliers will charge a deposit and a one-time fee to "rent" one of their cylinders. usually something like 150-200$ for 3-5 years. This covers upkeep on the cyl, which by law, needs to be tested and the valves rebuilt every couple years. Some of them will even refuse to fill cylinders they don't own for liability reasons. Anyway, you pay the rental, then you can take the cyl. back and refill it as often as you like and they only charge for the gas.

[TSorovanMHael]

@coalandnuclear If your hard-wire MIG welds have poor fusion and/or penetration, usually it means you're not drawing enough current. One reason that dual-shield / self-shield penetrates better, is that elements in the flux such as potassium increase the conductivity of the arc, and increase the current vs. MIG. But the most common reason is that welders with MIG try to use "short circuit transfer" (a low-current process which lacks cleaning action), on material too thick to be appropriate.

[TSorovanMHael]

@coalandnuclear all those dexoidizers simply aren't necessary in stick which by design the arc area is better protected from O2 in the air than self-shielded FCAW. Even under ideal conditions, it's difficult to get rid of porosity and worm-tracks with self-shielded FCAW. In normal steels, such excessive amounts Si, Mn, & Al would be considered detrimental impurities. Finally, penetration is a function of joint design, material thickness, travel speed, weld position, and most of all weld current.

[TSorovanMHael]

@coalandnuclear Thanks for the reply. Yeah, I forgot the bottle, that's a one-time expense too. doesn't really figure into the net cost of materials at the end of the day. I disagree about stick welding. The physics and chemistry that goes on with self-shielded FCAW are quite different from stick. For example In the former, wire manufacturers are forced to add excessive amounts of oxygen scavengers such as Si, Mn, and Al which in these amounts increase brittleness and impact sensitivity.

[coalandnuclear]

@TSorovanMHael you forgot $300 tank. and good luck getting all that card board around big objects. and by the way if your saying this is garbage then you are saying all stick welding is too. this has its place in the field. and they arent stronger, the fluxcore can penatraite deeper on thicker metal