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Author Topic: Square wave TIGgin' and conventional differences  (Read 10433 times)

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Offline Yoshi

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Re: Square wave TIGgin' and conventional differences
« Reply #45 on: March 31, 2009, 04:36:15 PM »
Quote from: Masterfabr on March 31, 2009, 04:22:07 PM
What diameter tungsten you using? 1/16"? Only way I can see it taking 125 amps is if the tungsten is undersize for the thickness metal you're welding and to me it looks like that is the case. It WOULD take more amps to get the same heat transfer as a larger tungsten. I use 3/32 on tube and nearly everything I do now.When doing aluminum head repair I used 1/8".
I use 3/32.  When I tig, I have almost zero gap all the way around, so I don't need to fluctuate my amps, but as I said before, if I have a bigger gap that comes up, i'll feather off the amps a bit to fill it.  I also only weld 1/4 sections after the part is tacked up.

I also use 3/32 filler rod, so it takes a little more heat to melt it down and flow smoothly....

I also don't have the tungsten sticking out very far, so it's putting more gas around the weld and cooling it more than being farther out, not sure how yours is setup....
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Offline fabr

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Re: Square wave TIGgin' and conventional differences
« Reply #46 on: March 31, 2009, 06:19:56 PM »
still a lot of amps for .120
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #47 on: March 31, 2009, 08:22:49 PM »
so did you try Alum yet Yoshi?
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Offline Yoshi

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Re: Square wave TIGgin' and conventional differences
« Reply #48 on: March 31, 2009, 09:44:04 PM »
Quote from: Boostinjdm on March 31, 2009, 08:22:49 PM
so did you try Alum yet Yoshi?
lol, no, it's something i'm curious about, but have no need to do at this point.....
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #49 on: March 31, 2009, 09:50:25 PM »
well.....get to it anyway.  you get a handle on it and a need will show up all on its own. ;D
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Offline fabr

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Re: Square wave TIGgin' and conventional differences
« Reply #50 on: March 31, 2009, 09:51:42 PM »
VERY true! and YOU'LL LEARN HOW TO USE A FOOT PEDAL! HEHEHHEHEHEEE
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #51 on: March 31, 2009, 09:54:11 PM »
 :m
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Offline Yoshi

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Re: Square wave TIGgin' and conventional differences
« Reply #52 on: March 31, 2009, 09:58:56 PM »
I can use the foot pedal, but as I said before, my notching is pretty much perfect for a tig weld, so I don't really have to vary the heat as I go, kinda like a mig, just pull and go.......

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Offline Reidy02

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Re: Square wave TIGgin' and conventional differences
« Reply #53 on: April 01, 2009, 03:38:07 AM »
Wow Guys I only posted that last night ya's don't muck around!! Anyway I noticed that someone said to post a pic of one of the ugly welds so here it is..
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Offline Reidy02

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Re: Square wave TIGgin' and conventional differences
« Reply #54 on: April 01, 2009, 03:47:50 AM »
I do have a square wave welder, but it doesn't have a foot control. Also when I start it takes a little while till it gets shiny then I try to add the filler rod and it seems to go everywhere but where I want it!
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #55 on: April 01, 2009, 04:41:47 AM »
what do you have the settings at on you welder?
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #56 on: April 01, 2009, 04:47:57 AM »
On the topic of Yoshi and his "pedal to the metal" method....I tried it, it works fine at 120 amps.  I actually welded 14ga to 11ga square all the way around with 1/16" filler and 3/32 tungsten.  i had to add filler like crazy, so a bigger filler like Yoshi is using would be good.  I expected some holes, but with good fitup I can see it workin.  Does seem like a waste of a perfectly good pedal though. :slp
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Offline Reidy02

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Re: Square wave TIGgin' and conventional differences
« Reply #57 on: April 01, 2009, 05:13:35 AM »
Prolly about 65amps, clean width turned to half, ah pulse down to about 0 and it's still fast, arc force about a third, I can't remember what the numbers are on the dial that's why I'm saying a third I'll post a thing tomorrow with the exact info.
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Offline Boostinjdm

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Re: Square wave TIGgin' and conventional differences
« Reply #58 on: April 01, 2009, 05:22:00 AM »
I would turn the pulse off and change your balance settings for starters.  More penetration, less cleaning.  It will give you a more directed arc.  Then wait for your puddle to get round then add filler.  If you add filler and it doesn't blend right in then you either added too early, added too much, or need to turn your welder up IMO.  What brand/model welder are you using?  What size/type tungsten are you using?  how much stickout?
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Offline Reidy02

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Re: Square wave TIGgin' and conventional differences
« Reply #59 on: April 01, 2009, 05:34:54 AM »
One of these and I have the tungsten out about 6mm, balled and I'm using a white tipped tungsten, also what's IMO?
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