Once upon a time I worked in an aluminum fab shop, we had syncs and dynasty's. It was always a fight to use the dynasty's and this was just for production aluminum welding, nothing fancy. The biggest reason was frequency control, once you have had it, it is hard to live with out.
Also 100hrs on a machine is nothing, at the above fab shop with two 10hr shifts, the production crew would have 100hrs arc on time a month on a machine. Some of our older sync machines had over 15,000 arc on hrs on them. The oldest Dynasty machine had about 10,000hrs. Some of the early 300dx's had some control board issues, but over all they were all dead reliable machines.
One thing to note about the post flow on the sync is that you can manually over ride that feature.
The other thing is that the sync is a power hog, at 200A it draws over 60Amps, All 6 of my welder plugs are on 40amp breakers, and typical welding outlets are only 50amp outlets.
I own a 200dx, the big deciding factors for me were:
- Frequency control, being able to direct the arc to the root, and still be able to reduce penetration for thin aluminum is a really nice feature. Also high frequency and low balance, really busts shit up, you can even weld through anodizing.
- Size, I can carry the 200dx in one hand with the handle. I have taken it over to numerous friends places, and to odd jobs, and because it will work on just about any voltage input it is easy to do. This wasn't my plan when I bought it, when I bought it I had a basement (lots of pics of that fab floating around) and a very small single car garage, so I needed to easily be able to carry it up and down the stairs.
- Power consumption, like I said above the sync200 pulls over 60 amps flat out. At 150amps output it draws 54amps @ 230V, the Dynasty at 150amps output draws 16amps @230v. It is easy to trip breakers with the sync, almost impossible with the Dynasty.
- Adjustable wave form. I really like square wave as I spent a few years doing production and I still have a tendency to want to slam the pedal down and go. I also like the triangle wave for thin shit.
- High Frequency only at the arc start, I haven't had much issue with running continuous HF on the syncs, but all the same I would just as soon have it shut off after the arc has started. Keeps the shop radio happy, and playing music vs static...
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Topic: cdm tig? (Read 16875 times)