[AT] welding problems

John Wilkens jwilkens at eoni.com
Sun Nov 15 07:49:27 PST 2009


Are you using AC 7018 rod?  Just a guess.  My old AC welder does very 
good with the 7018 AC rod but not so good with the common 7018 DC rod.  John W.



At 05:29 AM 11/15/2009, you wrote:
>OK stick welding experts, got one for you. The welder we have is a 40+ year
>old Marquette, bought new for use here on the farm. I had to buy some more
>welding rods over the past several months and unfortunately had to switch
>brands. We had always used Hobart (or possibly Lincoln) rods. The welding
>supply chain now only sells Hyundai rods in small quantities (10 lb) boxes.
>I can't justify buying 50lbs of Hobart rods.
>  Anyway, on to my problem. I picked up a new box of 1/8" 7018 rods to do
>some repair on my subsoiler. I set the welder as high as it would go (180)
>and could not get it to weld. All I could get was a couple of arcs and
>sometimes the rod would stick.  Before you ask, yes I cleaned where I was
>welding, cleaned the ground area, made sure the terminals on the welder were
>clean, and even cut off and reinstalled the end of the ground cable where it
>goes into the clamp. I also tried grounding and welding on 3 different
>pieces--all of varying size and thickness.  I resorted to using 3/32 rods
>with the welder set on 125. It would run those rods so hot that they would
>almost turn red before it was time to switch. I know I have used 1/8" 7014
>before, so my question is this--Is there a difference between 7014 and 7018
>that makes the 7018 require a higher setting on the welder, Is there
>something wrong with the welder, or is it something to do with these
>imported rods?
>
>John Hall
>
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                    In the wide-open spaces of NE Oregon
   




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