I just saw what's new to me in the Forney section at my local shop: A very compact (6.2lb) inverter Mig unit for $299 retail. They advertise it as "scratch-start TIG ready" (TIG torch and supplies sold separately)
The MIG specs are 85 amps at 35% duty cycle. It looks like an entertaining addtion to my shop (even though I have a little Lincoln MIG already... mine's not TIG capable.) I didn't note the input voltage.
LLoyd
entertaining
I bought a 60% duty cycle 185 amp tig welder. I wish I bought a bigger one. :(
A MIG that does TIG!? Not so common for the prize tag.
85A @ 35%, that sounds like Mikey Mouse. _That_ is entertainment.Nick
I figured it would fit the sort of teensy work I'd need to TIG. But then, like getting a new hammer, everything in the shop would start looking like it needed TIG-ing, and I'd be sorry I got such a small machine.
Still... the thought of picking up a little 6lb job instead of my 100lb Lincoln has its attractions.
LLoyd
It is not hard to build a power source that would be either constant current and constant voltage at the same time, so if Forney did it, that would be great. Does it have gas valves etc?
85 amps is too low to weld a lot of things that need welding, though. i
I was not clear, I meant a device that could operate either in constant current or in constant voltage mode depending on setting.
i
Probably the same one that Harbor Freight sells.
Gunner
"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster
Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton
I didn't have time to actually look at the machine. I will next time in town.
No, Iggy... you cannot have both constant voltage and constant current simultaneously, unless you also maintain exactly the same arc length all the time -- a little hard for a handheld torch.
LLoyd
How much 3 phase do you have available? Ive a Hobart CyberTig 2, that Id give someone who wanted it. Capable of 600 amps
Gunner
"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster
Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton
Ok... I take my chide back. THAT you can do.
LLoyd
I think very highly of those CyberTigs.
i
Come get it. Its been sitting out side for a year now, hopefuly with a tarp still on it...and it needs to find a home. Its got the full programmer drawer in it too.
Gunner
"Aren't cats Libertarian? They just want to be left alone. I think our dog is a Democrat, as he is always looking for a handout" Unknown Usnet Poster
Heh, heh, I'm pretty sure my dog is a liberal - he has no balls. Keyton
Want to bet that Iggy *cant* kludge together a torch head that haz a servo to maintain a constant arc length? :-) Sounds like just the sort of little project he'd enjoy sketching plans for while recovering from the christmas dinner.
Man! I wish we lived closer. I've only got 200 amps of 3 phase, but I can get all I need. :)
Theres no reason an inverter should be less than 100% duty .
It runs cool, cause it dont store energy .
common welders store a tremendous energy
in the inducance between the primary and secondary .
laminated core helps greatly to store .
But its just 2 capacitors that store the energy in
an inverter . The amps goin in and out have a very
low ohms , so cant heat up .
They put such a small core in , that it heats up ....
They should just use a proper ferritte core and run
it the normal 150 khz .
I got PC power supplies , that have a 300 watt core , so small
you could 4 in ur hand ! They run cool .
It all just false economy .
And you are making electronics as a profession!?
Merry Christmas!
Nick
Input is only 100 amps. So you would be golden
On a cart. Needs a pedal..though thats easy enough
Road Trip!!!!
Gunner
Political Correctness
A doctrine fostered by a delusional, illogical liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.