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What does DCEP mean in SMAW?
Direct current electrode positive
In SMAW Welding Process DCEP and DCRP are same?
yes Electrode Positive is the same as Reverse Polarity
What do the following abbreviations mean ac dcen dcep dcsp dcrp?
These abbreviations as related to welding: AC is alternating current (current that cycles between positive and negative peaks 120 times a second in the USA on a 60 HZ cycle) DCEN is direct current electrode negative DCRP is direct current reverse polarity and is the same as DCEN DCEP is direct current electrode positive DCSP is direct current straight polarity and is the same as DCEP
What do the following abbreviations mean ac dcen dcep dcsp and dcrp?
These abbreviations as related to welding: AC is alternating current (current that cycles between positive and negative peaks 120 times a second in the USA on a 60 HZ cycle) DCEN is direct current electrode negative DCRP is direct current reverse polarity and is the same as DCEN DCEP is direct current electrode positive DCSP is direct current straight polarity and is the same as DCEP
What determines whether polarity of a welding machine is set up for DCEN or DCEP?
The electrode. In some cases thin materials weld better with DCEN.
What determines weather the polarity of a welding machine is set for dcen or dcep?
DCEP supplies about two-thirds of the heat at the end of the rod, which allows more digging action, or penetration, into the base metal. It's what you want to use for thick steel. For thin steel, direct current electrode negative (DCEN) is best.
What Is The Correct Polarity For MIG Welding?
DCEP for standard Mig. DCEN for Flux Core
Introduction about submerged arc welding?
he submerged arc welding (SAW) process can achieve high productivity and deep penetration, making it an important process for joining large diameter and/or thick-walled components such as pressure-vessels, linepipes, bridges, and ships. SAW typically uses direct current electrode positive (DCEP) polarity because of power source availability, good arc stability, and deep penetration. Greater deposition rates are possible with direct current electrode negative (DCEN) polarity, but can result in reduced penetration and arc stability. Alternating current (which shifts polarity rapidly from DCEP to DCEN) has traditionally employed a sinusoidal waveform, resulting in less time at peak current (reducing wire deposition) and more time at periods of low voltage (reducing arc stability further). However, the use of a square waveform mitigates both issues in AC SAW. Additionally, modern SAW power sources allow the welding operator to manipulate waveform variables (such as balance, offset, and frequency), providing greater control over deposition rates and penetration depths.
What class of electrodes is best for welding on thin metals?
6011 is a good choice. 6013's also work well and (7014 is good if in position). Check MFG recommendation for polarity: I recall 7014's have less penetration running DCEP.
What is mean by polarity?
Water is a covalent molecule (one where the electrons are shared between the atoms). If you ever tried to share something with someone, then you know that it is difficult to share equally. The same is true for atoms. Some atoms like to hog electrons more than others (measured by what is called electronegativity), so they will pull the electrons towards themselves and away from the other atoms. In water, oxygen is the electron hog (has a higher electonegativity) and the hydrogen is left wanting. The electrons spend more time with the oxygen atom, so it gains a slight negative charge. In contrast, the hydrogen atoms has a slight positive charge. These slight charges and the shape of water (bent - like the letter "v") make the water molecule polar (having two poles - positive and negative). Most people know that opposites attract, so that is what happens here. The negative oxygen is attracted to the positive hydrogen atoms of other water molecules. This attraction is what causes a hydrogen bond to form. A hydrogen bond is not as strong as a covalent bond, but it is still very strong. This hydrogen bonding in water is responsible for many of its unique properties like high surface tension (pain when you do a belly flop), evaporative cooling (why sweating cools you off), and many other unique properties. hi mr Morris and ms urez there my science teachers
