DCEP welding, or Direct Current Electrode Positive (also called Reverse polarity), uses a direct current to create an arc between the electrode (connected to the Positive terminal) and the workpiece (connected to the Negative terminal). What is DCEP and DCEN in welding?ĭCEP and DCEN welding are two different types of welding that use different methods to create a weld. Due to high heat at the electrode end, DCEP results in a higher melt-off of the filler wire or electrode thus yielding in higher weld deposit compared to DCEN. Change in these terminal points as stated above results in 2/3 heat concentration on the welding rod and 1/3 on the base material to be welded.ĭCEP is used in Stick Welding (SMAW), GMAW (MIG/MAG, FCAW), and SAW welding processes. The electrons flow from the base material to the welding rod (cathode to anode flow of electrons). In DCEP as you can see in the above picture- the job is connected to the negative terminal and the welding rod is connected to the positive terminal. What is Direct Current Electrode Positive or DCEP Polarity?ĭCEP is also called Reverse Polarity. Straight polarity due to the above reason results in high welding rod melting.ĭCEN is used in GTAW/ TIG welding as well as some limited applications in Shielded metal arc welding (Stick Welding).ĭCEP heats the electrode much more than DCEN in TIG welding thus, DCEP is rarely used in the TIG Welding process. This gives around 1/3 of the welding heat on the welding rod and 2/3 on the base material being welded. The electrons flow from the Cathode (Welding electrode) to the Anode (workpiece). What is Direct Current Electrode Negative or DCEN Polarity?ĭCEN or also known as Straight Polarity works with the electrode connected to the negative, and the work is connected to the positive terminal as shown in the below picture (left side). Direct current electrode positive is also called DCEP and Reverse Polarity.Direct-current electrode negative (DCEN) is also called straight Polarity.The three different types of current or polarity used for welding are: Types of Welding Polarity/ Current in SMAW, GTAW, FCAW & GMAW which dc polarity is most commonly used in mig welding due to it’s stable arc, low spatter, good weld bead characteristics, and greatest depth of penetration for the widest range of amperages?Ī wrong polarity selection will result in high spatters, insufficient or excessive penetration, & a lack of control of your welding arc.Effect of Welding Polarity on Penetration & Heat Distribution in Welding.How do you determine the polarity of a weld?.What is Alternating Current (AC) Polarity?. ![]() What is Direct Current Electrode Positive or DCEP Polarity?.What is Direct Current Electrode Negative or DCEN Polarity?.Types of Welding Polarity/ Current in SMAW, GTAW, FCAW & GMAW.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |