MMA DC Inverter = TIG?

[stollyman]

Can a DC MMA inverter be used for TIG welding by the addition of a TIG torch and gas supply?

 

[shenion]

There are boxes that add HF start to arc welders. They also control the gas solenoid.

You see them on ebay. Lincoln has some for their big arc welders.

 

[irondarren]

yes and no lol. TIG runs at a slightly different voltage from MMA, most inverter units have a switch that changes mode. MY inverter fusion 200phf, has MMA mode, HF tig mode and scratch tig mode (i think). Its just a matter of turning dial and it changes mode from MMA to TIG. Some of the cheaper MMA inverter units dont have a tig switch

 

[weldequip]

Can a DC MMA inverter be used for TIG welding by the addition of a TIG torch and gas supply?

Yes. You just add a valved TIG torch, argon gas regulator & argon gas supply and you have a basic, 'scratch-start' TIG machine.
weldequip

 

[akdaka]

Hello

I have some questions regarding TIG conversion kits. Apologies if the questions have been asked before.

Has anybody converted their MMA welder with the TIG torch kit? I am only looking at welding steel and stainless steel.

What results are you getting if you have?

What would the max. thickness be of material that could be acheived with 150A machine?

I am currently looking at the torches on ebay from DIYwelding, to give an option to MIG, for thinner materials.

Thanks in advance

Andy

 

[irondarren]

MY old EWM pico 140 is a basic inverter, with a switch for TIG (it just changes the voltage). You just need a tig torch with a gas valve and a few consumables and you can TIG, but its only scratch start, meaning you will have to scratch the torch against the work piece and lift it off slightly to get an arc. Its fine and works no problems, i change to an inverter fusion unit with HF start because, i found myself reshaping the tungsten to often for my likeing.