What is the difference between DCEP DCEN and AC?

Both DC Straight Polarity and DC Reverse Polarity have respective pros and cons. Thus AC polarity provides a moderate effects. Various similarities and differences between Direct Current Straight Polarity (DCSP) and Direct Current Reverse Polarity (DCRP) are tabulated below.

What is better AC or DC welding?

DC stick welding offers advantages over AC when welding steel, including smoother and more stable arcs, easier starts, fewer arc outages, less spatter and easier vertical up and overhead welding. DC positive polarity provides a high level of penetration into the steel.

What is the disadvantage of Dcsp?

High distortion—Since rate of heat input at the base metal is quite large, so distortion may arise if proper clamps and supports are not used. Distortion can even result in rejection of welded plates.

Does DC or AC penetrate the base metal more?

DC positive polarity allows for a high level of penetration into the steel, while DC negative polarity means less penetration but a higher deposition rate (used on thin sheet metal, for instance).

What is Dcsp in welding?

Direct Current Reverse Polarity (DCRP) in welding When electrode is connected with positive terminal of the welding power source (DC type) and base metals are connected with the negative terminal, then the connection is termed as Direct Current Reverse Polarity (DCRP).

What is the meaning of Dcsp in welding?

direct current straight-polarity
”reverse-polarity.” The machine connection for direct current straight-polarity (DCSP) welding is electrode. negative and work positive. In other words, the electrons flow from the electrode to the plate or workpiece, as shown in Figure l-l.

How does current flow during welding?

The direction of current flow through a welding circuit when the electrode lead is connected to the negative terminal of the power source and the work is connected to the positive terminal. Sometimes referred to as straight polarity.

What do you mean by Dcsp and Dcrp?

DCSP – Work piece connected to positive and Electrode to negative. 2/3 heat is generated on positive side. Depth of bead penetration is deep and width of the bead/pass is narrow. DCRP – Work piece connected to negative and Electrode to positive.

What does Dcsp might cause top the welding component?

DCSP may cause high distortion and broader HAZ in the welded component. Distortion is less with DCRP and also HAZ is narrow. DCSP is not suitable for welding thin plates.