AC frequency harm 280DX?

[WillieB]

Sorry about that. Jody Collier and his weekly you tube videos & forum can be fairly blamed for a couple million people like me working up the nerve and interest to outfit for TIG welding. The man is brilliant. For reasons only he can know, he teaches VIA you tube. He has with others brought me from all thumbs to respectable welds in TIG, MIG, Stick. I wasn't bad with acetylene long before they invented computers.

[Broccoli1]

Okay, Jody is referred to in post #9 and 13, yet I didn't see anyone by that name posting in this thread, thus my title of "Who's Jody" no big deal just asking...

ahh- i don't think we noticed you had titled your post- at least I missed it.

[H80N]

Okay, Jody is referred to in post #9 and 13, yet I didn't see anyone by that name posting in this thread, thus my title of "Who's Jody" no big deal just asking...

Jody runs this site

http://www.weldingtipsandtricks.com/

[Ltbadd]

I think what he is saying is that Jody didn't notice much of a change in Arc profile from 200hz to 400hz.

Okay, Jody is referred to in post #9 and 13, yet I didn't see anyone by that name posting in this thread, thus my title of "Who's Jody" no big deal just asking...

[Broccoli1]

???

I think what he is saying is that Jody didn't notice much of a change in Arc profile from 200hz to 400hz.

[H80N]

http://forum.weldingtipsandtricks.co...php?f=5&t=6015

Not much more info there than i gave here, but that's the original comment.

Johnny

Thanks for posting the link..

You are right.. not much more info there...

would love to hear more from Miller on this... as to... if there is an actual problem or if it is much ado about nothing..

FWIW... I cannot see a need for 400HZ in anything that I am doing.. so is probably a moot point... but interesting...

[johnnyg340]

http://forum.weldingtipsandtricks.com/viewtopic.php?f=5&t=6015

Not much more info there than i gave here, but that's the original comment.

[snowbird]

I recall to have read somewhere my owner's manual ?? that HF and stick is not recommended and extremely dangerous.

If someone has more to the point infos on that...

(hope i'm not hijacking the thread)

[WillieB]

???

No argument here, do you disagree? I've never been there, I don't know.

[Ltbadd]

Who's Jody?

Jody says not much Earth shaking changes above 200 HZ but I wanted to see for myself.

???

[H80N]

Link..???

On Weldingtipsandtricks... I briefly related the experience of a customer who bought one when they were initially offered. He ran 400HZ and fried a board... Ran 400HZ again and fired the new board. Miller took the machine back and did indeed agree that it was a design issue. Never heard anything about it again. Perhaps they have solved the issue?

while interesting... that reference is not very useful without a link to the original posts on WeldingTipsandTricks... to understand the context...

pls post that link...

[WillieB]

On Weldingtipsandtricks... I briefly related the experience of a customer who bought one when they were initially offered. He ran 400HZ and fried a board... Ran 400HZ again and fired the new board. Miller took the machine back and did indeed agree that it was a design issue. Never heard anything about it again. Perhaps they have solved the issue?

Thanks for responding, I tried every search I could think of, but couldn't find it.


Jody says not much Earth shaking changes above 200 HZ but I wanted to see for myself. Logic says anything I can do to narrow the arc, concentrating the heat will give better penetration, melt what needs melting, and get me moved along quicker. Anything that shortens the time on the metal reduces HAZ and subsequently distortion.

As for the sound, I wear ear plugs, and I'm already quite deaf to high frequency sounds anyway. Still it's awful! I never knew what a happy, gentle sound I had from my 60 HZ Dialarc.

[WillieB]

I'll leave the question of HF on reverse polarity to greater minds than mine. The question of when you would use reverse polarity with TIG I pose to you. Reverse polarity would have limited application in TIG. It heats the tungsten real hot except at very low current. With SMAW or stick I doubt you want HF.

[zank]

not a bad compromise

[johnnyg340]

Very possible. Like I said, they may have the issue fixed, OR they saw a defect in his machine ONLY. But the message to him was clear: Your machine cannot do 400hz. He is now a happy owner of a 350...