Downhill Welding Tips: Setting Arc Control vs. DIG Range

Downhill Welding Tips: Setting Arc Control vs. DIG Range


Warning, read and follow all
labels and the owner’s manual. Dynamic DIG is our
version of our dig control. We developed Dynamic DIG
specifically for pipe welders, downhill pipe welders. It gives pipe welders an optimum arc that allows them to adjust
parameters to allow them to make X-ray quality welds every time. All right so since we
released our Dynamic DIG I’ve gotten a lot of
questions of guys calling in wondering how to set the machine and what these controls do. We have really two
controls for our downhill pipe welding process or XX10 process. The first control is right on
the front panel of the machine called our arc control, we
got a stiff 25 and a soft 25 and everything in between. It comes preset from the
factory right in the middle and that’s a pretty good starting point for most applications, but depending on the size of pipe that you’re welding on and the size of the
electrode that you’re using you’re going adjust that up or down. What that adjustment is
really doing is setting the response time of your arc. As you go towards stiff 25 that
arc is going to respond faster. It’s going to increase in that response. It’s going to be a little bit
faster, give you a slightly more in drive, help clean
out your arc or your puddle a little bit more. When you go to the soft
side, it’s going slow down that response time, the
metal’s going to tend to fall out and be a little bit
more soft or softer arc. The dig range is a separate
control in the hidden menu that is going to come from
the factory set at 100. And again that’s a pretty
good starting point for most applications, but depending
on the size of pipe that you’re welding and the
electrodes that you’re using and your personal style you’re
going to set that accordingly. Now the higher you go on that dig range it’s going to give you more
drive and more penetration because you’re reaching
a higher amperage limit. The lower that you go it’s
gonna be a softer response because you’re decreasing
the amount of amperage that that machine is able to
reach out to on your VA curve. So a good rule of thumb
if you you’re putting in a 1/8 inch root pass, 5/32
fill in cap you’re going to want that dig range to be
somewhere between 50 and 100. If you’re putting in a root
pass with a 5/32 off fill and a cap with a 3/16 it’s
going to be somewhere between 100 and 150 for your dig range. And then your arc control
will be up or down depending on what you see. And that should do it for you.

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