set-up for 16ga. tubing?

[Srubrn]

Alright resident experts. I have a MM210 and need a setup for welding some 16ga. square tubing. What wire, flow rate, wire speed and tap setting?

[cope]

Todd, Miller's calculator shows for C-25 and .035 wire:

17-18 volts/90-110 amps/180-220 wire speed

.030 wire:
17-18 volts/90-110 amps/220-250 wire speed.

Don't have a 210, so I can't tell you which tap, but I believe either the panel settings or owner's manual settings will tell you which tap coincides with what I gave you. You need to order the $25 educational student kit from Miller . Many books, all their slide rule calculators and a certificate for a free Miller jacket w/ proof of purchase of your 210. I know it gets cold enough in Meridian for a jacket.

[Srubrn]

I was thinking of using .023 wire with a tap setting of one and speed at about 28

[cope]

Originally posted by Srubrn
I was thinking of using .023 wire with a tap setting of one and speed at about 28

Miller conveniently left .023 wire settings off the calculator. Best advice I can give you is try some welds on scrap and see what happens. Calculators and manual settings are just a starting spot.

[dseman]

Srubrn,

Your owner's manual on page 21 has a nice chart to use as a general starting point for parameter setting. For 16guage metal, .023 wire, and straight CO2, try Voltage=3, Wire=45, flow=25CFH. For a 75/25 gas blend, try Voltage=2, Wire=40, same flow rate.

Did you get an owner's manual when you bought the MM210?

-dseman

[cope]

Originally posted by dseman
Srubrn,

Your owner's manual on page 21 has a nice chart to use as a general starting point for parameter setting. For 16guage metal, .023 wire, and straight CO2, try Voltage=3, Wire=45, flow=25CFH. For a 75/25 gas blend, try Voltage=2, Wire=40, same flow rate.

Did you get an owner's manual when you bought the MM210?

-dseman

Todd, if you didn't, you can download one at Miller's site.

[Dan]

Cope

In most cases for the short arc settings given on the Millermatic calculator for 16 ga - 3/8" if you actually go down one material thickness on the settings you end up with better results. For example, if your going to be welding 1/8" with an .035 wire and C25 use the 14 ga settings. Which are 17-18 volts and 240-260 IPM (120-130 amps). The short arc settings given on the calcuator are a little hot in this range because they are production settings, where speed is important.

[Planet X]

change your shielding gas to a low energy mix eg. 90/10 .030 will be fine with said mix.

[Srubrn]

I did get manual and have looked at it, but I just wanted some real world settings. Thanks for all the help.

[cope]

Originally posted by Dan
Cope

In most cases for the short arc settings given on the Millermatic calculator for 16 ga - 3/8" if you actually go down one material thickness on the settings you end up with better results. For example, if your going to be welding 1/8" with an .035 wire and C25 use the 14 ga settings. Which are 17-18 volts and 240-260 IPM (120-130 amps). The short arc settings given on the calcuator are a little hot in this range because they are production settings, where speed is important.

Dan, thanks for the input. I had noticed the same with my PowCon, but wasn't sure whether mine just ran hotter or what. Saw you were lurking around last night; surprised you didn't jump in then. How's the cold?

[10secBu]

I just did some work on a new exhaust system for my street/strip car. The tubing was 3 1/2" and 3" aluminized 16 ga. steel tubing.

I found that the aluminized tubing rquired a hotter machine setting to burn through the coating...still didn't weld terribly great.

If you have plain steel tubing, you'll have a pretty easy time welding. The aluminized takes some getting used to.

BTW, I was using a MM251.

[MikeG]

Subrn,
In a real world setting using 75/25 mixed gas and .023 wire welding on mild steel square tubing with wall thickness of 16ga., set your voltage to 2 and the wire feed speed to 40. Now things that will change these settings will be your actual input voltage. These settings are for a 230v primary input on a dedicated 230v, 30amp breakered circuit. If your actual input voltage is measured higher than 230 volts the settings may need to be lowered a bit. If your actual measured input voltage is lower than 230 volts you may need to raise the settings.
MikeG

[banzaitoyota]

I grind the area of aluminized tubing before I weld it. Welds much cleaner. I use 90/10 gas

[Srubrn]

I do have a HH 135 that has .023 wire in it and I could use it but I wanted to use my MM 210.

[Royal Fe]

How is that new 210? I'm ordering one this week and wanted to know what you think. Should I wait and get the 251 after saving more money?