Posted by Stan in Oly, WA on December 25, 2013 at 13:10:54 from (174.31.217.115):
In Reply to: Re: dc stick welding posted by old on December 25, 2013 at 07:41:12:
Hi Rich,
I'm sure you're not saying that just because the improperly stored 7018 you've used has never given you problems in the applications you've used it in, there's no reason for anybody to use it properly, ever. You can also drive on unlighted roads at night with your headlights off, not wash or clean cuts and wounds, or eat raw pork. Those things also work fine---until they don't.
Lincoln Electric states clearly that 7018 rod that has been exposed to high humidity or gotten wet can be reheated once, at 600-700 degrees F. for one hour. They state that longer than one hour at lower than 600 degrees will not do the job. I've heard of many ways to reheat 7018 at home or at the jobsite, but none of them could possibly be the equivalent of a 600 degree oven for an hour.
If someone isn't interested in getting the high quality welds that properly used 7018 is capable of, they might as well use 7014. It's also a 70K PSI rod, and it's a lot easier to use, even if it isn't a low hydrogen rod, and even if it isn't intended for dynamic loads.
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