Shield Arc
Super Member
My Dynasty 300 almost made a Tig welder out of me. I love it, I just turn it on, and I get results like this! :cool2::cool2::cool2::cool2:I aught to pick up an inverter while I'm at it!
Any suggestions on my tig setup -Dialarc HF (dinosaur)?
- Thread starter dntfxr
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dntfxr
Platinum Member
Thanks Dan, if I can't get the 3/32 to work I will get a larger collet and go that route. Thanks for the tip. From what I've read I really wish I had AC balance. It would be nice if there was some add on circuitry that would allow for that. For some reason when I try to start my weld on a lap joint it gets the black sooty crud on it but on once I skip past that ugly part I'm getting a decent weld. Could part of my issue be that I need some type of preflow and that's why the beginning is so oxidized? Maybe I can press the pedal before I position the torch and start out with gas flow before I ever strike an arc. Is this a possibility?
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dntfxr
Platinum Member
Shield Arc
Super Member
Oh I'm just a hobbyist! It's all in the machine! Like I said, I just turn it on!
Shield Arc
Super Member
That's a very good idea!
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dntfxr
Platinum Member
That's a very good idea!
It definitely helped! I've also experimented with 2% thoriated, 2% lanthanated and pure tungsten, and it seems the pure is the way to go for aluminum with my setup. The others split and deform and start to blow apart but the pure just rounds over and stays consistent. It's starting to come together on aluminum for me, figuring out torch angle has helped a lot. Not exactly pretty welds with it yet though it's getting better.Steel is relatively easy compared to alum and it seems to not matter which electrode I use with it. I also got a new post flow timer installed and it's helped too. Maybe I'll get some welds worthy of a picture soon lol!
Mysfyt
Platinum Member
Also, give it lots of pedal at the start when welding aluminum.
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dntfxr
Platinum Member
Yes that has definitely helped. If I can get a quick puddle going and moving the torch quick then ease off it does much better. At least part of my problem is I have sat there and cooked the aluminum. Amperage is never in short supply with this beast lol. Even when I move quick enough it seems there's always a "skin" over the puddle. I guess if I had a/c balance with more cleaning affect that might be not so bad. I was reading at welding tips and tricks and he recommends adding helium with the argon. Can anyone tell me what affect helium has on the process?
Shield Arc
Super Member
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dntfxr
Platinum Member
With helium you can really start backing off the amps. I made this weld with 100% helium, on DC. About half the amount of amps if it was with pure argon, and on AC.
You realize that is how Heliarc welding on aluminum got started.
Yea, most of the locals still call it heliarc. I kind of thought it might run hotter but wasn't sure. I've been practicing a little this morning and figured out one thing for sure. I've been using too many amps on aluminum, I turned it down and I'm finally getting decent results. I may try a larger gas lense next because I almost have to weave side to side to keep it running clean. Then I have too wide of a bead. I may try smaller diameter filler also.
