Dynasty 200DX

[df5152]

will this machine weld 1/4 aluminum on helium?

[rb455ho]

dyn 200

Yes, it will do 1/4 " aluminum all day long.

[KB Fabrications]

I just welded some fillets on 1/4" 6061 plate. I did a little preheat and my 200DX did fantastic. Settings were 200 amps, 75 balance, and 180 hz using 100% argon. I used 3/32" 1.5% lanthanated with a small (.020 ish ) flat on the tip. I did not use pulse. Pretty sweet.

As far as all day long, I don't think so. The duty cycle at 200 amps will get ya before long.

[Bendaman]

KB,
would you be willing to post a picture of that? If its not too much
trouble, thanks in advance. I was wondering the same thing about
the Dynasty 200DX.

[rb455ho]

literal a figuratively

KB, there is a big difference between literal meaning and figurative meaning. Of course the duty cycle would prohibit continual use.

[Paul Seaman]

Yes and NO:
Yes it will do it, with preheat and adding Helium gas.
No I wouldn't do it for a regular everyday event. The dynasty200DX is really home in Aluminum at 1/8" or 3/16" but it will push it pretty hard for 1/4".

The rule is .01 in material thickness= 1 amp so 1/4"=.250=250 amps which is over the 200dx's recomendations. For an infrequent event it would be ok.

Peace,

[KB Fabrications]

KB,
would you be willing to post a picture of that? If its not too much
trouble, thanks in advance. I was wondering the same thing about
the Dynasty 200DX.

Here they are. I hope they show up ok. As I said before,the settings were 200 amps, 75 balance, and 180 hz using 100% argon. I used 3/32" 1.5% lanthanated with a small (.020 ish ) flat on the tip. I did not use pulse. This was a test piece I welded before committing to the actual job. The third picture looks like there is a bit of porosity but it must just be the angle and the light. Enjoy and thanks for looking.

[HAWK]

Kevin,

That looks good. How much preheat? I have tried the same thing and found a 75He/25Ar blend reduces the convexity of the bead with the D200DX on .250" Al.

[rb455ho]

Kb

Kb, those welds look great to me. I have one question. It seems that with the inverter machines the distance between adjacent weld pools is greater than with Xfmr/rectifier machines. Am I imagining things or what. The welds HAWK posted were spreadout even more. Thanks for your input

P.S. I love my syn 350 for the 1/2" al. it does a great job but the welds are closer together. I posted something awhile ago on travel speed and did not get much response.

[Bendaman]

KB,
Thanks for posting the pictures,nice work!
Happy Holidays

[ASKANDY]

rb455ho,
The weld bead configuration has nothing to do with the type machine but how the operator manipulates or adds filler while moving the torch. I can get the same bead look and spacing with any type unit. It really depends on what you like or how you were tought.

Have a good holiday!

Andy

[KB Fabrications]

Kevin,

That looks good. How much preheat?

Thanks HAWK. I wish I could tell you how much preheat.. I'm not real scientific about it. For this I used a small toaster oven that we have in the shop. Set it to bake ate 350 deg and let it go for about 6 minutes. It's so old that I would be hard pressed to trust the setting.

As far as the convexity, it seemed to do well. Looking across the bead on that test piece, and the subsequent job, I'd be hard pressed feel the need for that mix. I'd have to go buy a bottle of it anyway. It would be fun to play with though

[KB Fabrications]

rb455ho,
The weld bead configuration has nothing to do with the type machine but how the operator manipulates or adds filler while moving the torch. I can get the same bead look and spacing with any type unit. It really depends on what you like or how you were tought.

Couldnt have said it better. I prefer an aluminum bead like the ones in the pictures I posted. Some like the puddle spacing closer, some like the the puddles farther apart. I would suggest you play with different spacing and see what you like better. I actually have customers that want it to look different ways on different things so I gotta be flexible.

[fun4now]

great looking beads

looks great, makes want mine all the more.

in the last 6-8 monthe that i have been saving for the Dyn.200DX the more i see and hear about it just makes me that much more convinced that i have made the right choice to save and get the dyn.

even if the wait is killing me

[HAWK]

Rob,

Just to let you know the bead in the "tungsten grinder" post was welded with a Dynasty 300DX inverter power source. You may not believe this, but I'll post it anyway. This will surely to draw some disbelief from those who have not used a Dynasty 300DX.

The weld in the picture is a fillet on 3/8" x 6" x 2" coupons of 6061 T651.
It was made with 100% argon and 185 amps to create a soaking wet puddle and 150 amps to run the bead with an EN balance of 72% and an arc frequency of 110HZ. The filler was 3/32" 4043.

The freeze line spacing is a happy medium of good penetration and the "wider" look that some people prefer. If you move the torch less distance and add filler more often, then the freeze lines will be closer together. If you put the filler in the arc and run with it, the bead will be nearly one solid run with very tiny ripples all the through from start to finish.

Like Andy and Kevin said it is all in technique. Your Syncro 350 will make the same beads as in the pictures. It is torch and filler manipulation.