what the differnts in an - ac rod -an a dc rod

Date 07-07-2008 22:56

I try to weld with a 7018 ac with a sa-200 dc machine did not weld ?????????? tell me the different ,from a ,ac rod ,an a dc rod

By ravi theCobra (**)

Date 07-07-2008 22:58

Did you have the electrode ( + ) or ( - ) ?

By Billyjoe (***)

Date 07-08-2008 00:37

+ ,but airgas told me I need to use a dc rod ,with my sa-200

By 357max

Date 07-08-2008 13:46

7018 AC electrodes are formulated with a flux that stabilizes the arc with low open circuit voltage (40 - 60 OCV) AC machines. They usually don't like long arcing at the start and show porosity as a result. Hobart & Lincoln both have offerings in XX11, 13 & 18s for low OCV machines (usually AC "buzz" boxes). For example, the Lincoln's Fleetweld 180 is a 6011 that was designed for the their AC 180 machine.

By Billyjoe (***)

Date 07-08-2008 15:53

thanks you all