Correct polarity, with normal arc length and amperage, will produce a regular "crackling" sound. Hold normal arc length and standard electrode angle and run a beadĥ. Set amperage at 130 to 145 for 5/32" electrodeĤ. Determine polarity by the metallic electrode (E6010) High Cellulose have to be run is DC+ (Reverse Polarity)Ģ. You can run it in DCEN but again that's not made for penetration and in fact 7018 in DCEN is really for thin sheet metal.ī. I feel like we keep saying the same thing in circles so unless hes welding sheet metal there is no reason to run in straight polarity.ħ018 DCEP current can make it easier to control the arc and gain a more appealing weld bead because the direction of the current flow is constant. Since his title was when should i reverse polarity. Lets now change the post to the correct definition "Electrode Negative is straight polarity and Electrode Positive is reverse polarity" just so the OP knows. ill agree do disagree at this point.Yes you can do it, doesn't mean its correct?. If 70 rod were never intended to be used in DC-, they'd be XXX0, XXX3, XXX5, XXX6 series rods. There are many other instances where DC- on 7018 or 6011 are beneficial. Have had multiple bend and x-ray tests passed that way too. Mostly on root passes because I hate how cellulose rods weld. Still got proper penetration, weld didn't look horrible, and according to AWS and Lincoln, I was within the design limits of 7018.ġ0+ years ago I'd do the same 7018 DC- on thinner gauge material and root passes. Rather than fighting running too low of amperage on the 1/8 rod, or leaving to go get smaller, I ran the same amps I usually would, same DIG settings, but flipped it from DC+ to DC. Turns out one of the items I needed to repair was. Was told everything was SCH-40, so I only brought 1/8 7018 to the job. 7018, you still can.Ī few weeks ago I had to do a repair job at a local gas plant. If proper penetration came down to just running the correct polarity, there wouldn't be so many issues of lack of penetration.ĭCEN 6010 should never be done, it's not meant for it. lastly 6010 is a hard facing rod you don't want to be running it in DCEN for any job that will be specked out or x-rayed. Unless someone is going to go out an buy a specialty rod for 6010 in DCEN then i wouldn't use it in that polarity, but this wasn't the premise of the post.Īlso im not talking about 60 those are completely different animals. You're right we do have diff codes here in the USA but im talking about running the rod so you get the correct penetration and bead appearance, The rod doesn't care what country its in.ĭCEN is absolute terrible for 6010 & 7018 looks like as Jody says Fido's Butt. WeldingJunkie wrote:Tweake is spot on, you'll never get the correct penetration.
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