welding rods

[JJE]

Welding that I have r not marked to b ac or dc is there a good way to tell what they r. i know that they work better on dc as for getting them to start. they are 6011,6013, and 7018 in all sizes

[go2building]

What they are used for and polarity is all in the numbers, look at a rod chart and it will even tell you what amps it can be ran at.
Kevin

[JJE]

where can I find a chart because they are not in a box and thinks for the help

[gnforge]

If there AC it should be marked on rod ie.
7018-AC if not on rod should be DC.
Down load miller weld setting APP for settings

[go2building]

Miller sells a slide charts for SMAW, GMAW and GTAW

[big mike]

6011 and 6013 could be run AC or DC,7018 would be run DC and 7018AC would be run in AC.

043125 near the bottom of he page here,

http://www.millerwelds.com/resources/tools/#calculators

[JJE]

thinks for all the info. That is what I thought but was not sure so that is why i ask the pros.

[Gasrat]

I hope the link works, first time trying to post one. The Lincoln Electrode Guide has a lot of good information. Pages 36-38 should answer your questions on current and polarity.
http://www.lincolnelectric.com/assets/en_US/Products/Consumable_StickElectrodes-MildandLowAlloySteels-Excalibur-Excalibur7018-1MR/c2410.pdf