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Thread: 7018AC rods

  1. #1
    Join Date
    Aug 2007
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    Default 7018AC rods

    I don't profess to be a stick welder, but normally I can run a bead. However, I'm not real experienced at it. With this in mind, I thought today would be a good day to do a little practice. Got some 1/8" mild steel and started running some beads with 3/32" 6013. Went ok. But, when I tried to run some with 1/8" 7018AC ( Lincoln rods) about 80 amps on AC, everything fell apart.

    I have never had so much trouble with a rod sticking. When I did get it to strike, the beads looked like poo. Is it just me and my lack of experience or is this a tough rod to run?

    Any hints?

    Thanks.

  2. #2
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    Default

    The reason you were having problems was not enough amps.... 1/8 7018 needs to be run well above 80 amps....try around 115 to 160.....
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  3. #3
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    Default

    ditto

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  4. #4
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    Default

    It wont bite, turn that puppy up, 105-115 on a buzz box normally depending on incoming service and wiring. That stuff is what most of the 90% of the home hobby crowd should be using imopin, cant miss. A few sticks of 1/8 6011 and 7018 in 2 sizes, 3/32 and 1/8.

  5. #5
    Join Date
    Aug 2008
    Location
    Southern Ontario
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    Default

    As others have said, I am having good success with 7018AC (running on DC+) somewhere between 110-120 A.

    What I have found works well for me is that I tack weld (typically with a new electrode) hotter that what I normally run it at - heck I turn it up to 140 for a couple tack welds. Dosen't stick and heats up the rod nicely. Then down to about 110 in the flat position and it runs real nice.

    I'm about to replenish my supply of 7018. Question for the experienced guys here: I've been running 7018AC because my welder came with some. Are there reasons why I should pick 7018AC vs 7018 LoHy if I am running DC+? I'm not storing the way they should really be stored but I'm not welding anything critical either.

  6. #6
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    Default

    Due to some early in life brain damage, I need to correct something. I said the rod was 1/8" when in fact it was 3/32".

    I suspected I was running a bit cool as you have told me. Lincoln says the 1/8" range is 105-150 AC. I made the mistake of looking at the wrong table when setting my amperage. As for 3/32", they suggest 75-120 AC and 70-115 DC+. Guess 80 was a bit light for conditions. I'll turn it up for my next practice.

    BTW, I was running my Precision Tig 225 in stick mode for this practice.

    Thanks for the answers.

  7. #7
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    3/32 7018 ran really well on my maxstar at around 75-110 amps....depending on the thickness of the material etc.....
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  8. #8
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    Default

    A nice thing about this AC stuff is it restrikes very easily.

  9. #9
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    Default

    Quote Originally Posted by Sberry View Post
    A nice thing about this AC stuff is it restrikes very easily.
    Had trouble with restrike also. Kept sticking. I've stick welded with this machine in the past and didn't have this problem ,of course I was using 6013.

    Pretty much think it's operator error. I'm going to try a bit tomorrow and I'll keep turning the amps up and find the sweet spot with this batch of rods.

    All my experience has been with O/A, Mig, and Tig. Thats why I'm trying to get this stick thing down. Should be beneficial with future projects. Always like to learn something new.

    Thanks again.

  10. #10
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    Default

    7018 runs colder then other rods so you have to rank up the amps.
    everyone said 100 to 130 140. Thats if your dial actually corresponds to the amps the welder is delivering.
    I had a gas powered welder rate for 135 amps DC and it would just barely run 1/8" 7018 so don't be surprised if the weld is still cold when the dial says your running X amount of amps. Don't worry about the numbers just crank it up till it digs in at the toe then back it off a bit.
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