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Up Topic Welding Industry / Technical Discussions / Clarification Required
- - By Nalla (***) Date 06-24-2013 14:38
Dear Experts

It may be a dumb question but appreciate clear definition.

DCEN-Direct Current Electrode Negative ( the work piece/lead connected to positive terminal )
DCEP-Direct Current Electrode Positive  ( the work piece/lead connected to  negative terminal )
DCSP-Direct Current Straight Polarity    ( the work piece/lead connected to positive terminal )
DCRP-Direct Current Reverse Polarity    ( the work piece/lead connected to  negative terminal )

So, Is  DC-VE = DCEN = DCSP  same ?   &   Is   DC+VE = DCEP = DCRP same ? 

Thanks
Parent - - By qcrobert (***) Date 06-24-2013 15:29
DCEN-Direct Current Electrode Negative (positive ground) same as DCSP-Direct Current Straight Polarity (example TIG or GTAW)
DCEP-Direct Current Electrode Positive (negative ground) same as DCRP-Direct Current Reverse Polarity (example stick or SMAW)
Parent - - By 803056 (*****) Date 06-24-2013 16:48
What is this "ground" you speak of?

By chance are you referring to the "workpiece lead"?

The following are excerpts from AWS A3.0:2001 (that what I have loaded on my computer):

workpiece lead. The electrical conductor between the
arc welding current source and workpiece connection.
See Figure 34.

reverse polarity. A nonstandard term for direct current
electrode positive.

straight polarity. A nonstandard term for direct current
electrode negative.

Best regards - Al
Parent - - By qcrobert (***) Date 06-24-2013 17:41
Yes, workpiece lead.  Sorry fell back into my Brown & Root days from what I can remember of the 60's...:wink:

QCRobert
Parent - - By 803056 (*****) Date 06-24-2013 17:43
I guess everyone has to start somewhere. But Brown and Root?

Best regards - Al
Parent - - By Superflux (****) Date 06-24-2013 19:40
I'm still curious about the initials "VE"?? Could someone please clarify this for me.

Brown and Root may not have the stellar reputation of say Bechtel or Black and Veatch, but they fed my family for a couple of years and sent me to college for a few credits. I believe in the late 60s early 70', they were the world's largest construction company. Very click-ish good 'ol boys and you were either in or out with them. Had to be minimum 3rd generation Texan or related to someone with a gold hat. Some how I made it to the out list...
I think qcrobert and I were on the same project with them.
Parent - - By 803056 (*****) Date 06-24-2013 20:24 Edited 06-24-2013 20:26
I thought you had to show a direct bloodline to Lady Bird or Old Man Johnson!:grin:

It's been way too quiet around here. Time to stir the muddy bottom of the puddle!

You got me with "VE". Victory in Europe?

Best regards - Al
Parent - By Shane Feder (****) Date 06-24-2013 21:46
Negative and Positive
Not sure where it came from but that has always been my understanding.
Cheers,
Shane
Up Topic Welding Industry / Technical Discussions / Clarification Required

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