As I understand from welding people even older than I; in the beginning days of welding, DC welding was performed with direct current power supplies with the electrode being the negative pole. As welding progressed some, people found that SMAW welding with cellulosic coverings “ran” better with the electrode positive or “reverse” polarity. This may be a true story or it may just be propagated mythology. At any rate -
For basic welding you can have an alternating current (AC) power supply or a direct current (DC) power supply. With DC you have two options: (1) electrode as the negative pole and the work piece the positive pole or (2) electrode as the positive pole and the work as the negative pole.
DC straight polarity (DCSP) is the same as DC electrode negative (DCEN). There may also be non-standard designations such as DC-, or DC-VE.
DC reverse polarity (DCRP) is the same as DC electrode positive (DCEP). Or similar to above, non-standard DC+, or DC+VE.
Hope this helps.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Anban
Sent: Tuesday, June 18, 2013 4:47 AM
To: materials-welding@googlegroups.com
Subject: [MW:17965] Clarification on Current and Polarity Abbreviations
Dear Experts
Pls enlighten me if thse abbr. are same and explain the correlation and difference
1 - DCEP x DC+VE x DCSP
2 - DCEN x DC-VE x DCRP
DCEP - Direct Curent Electrode Positive
DCSP - Direct Current Straight Polarity
DCRP - Direct Current Reverse Polarity
Appreciation in advance
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