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What do the following abbreviations mean ac dcen dcep dcsp and dcrp?
Wiki User
∙ 11y ago
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
Wiki User
∙ 11y ago
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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
In SMAW Welding Process DCEP and DCRP are same?
yes Electrode Positive is the same as Reverse Polarity
What is dcrp in welding?
dcrp = direct current reverse polarity
Why do you change polarity DCRP-DCSP in SMAW?
Using DCSP when welding thin material causes more heat to be concentrated in the electrode than in the base metal. This prevents the arc from burning thru thin materials before the electrode melts.
What is reverse polarity in welding?
This is applicable to DC supply Arc Welding.In Layman language, when the electrode is given positive potential and the work piece is given negative potential, the weld formed is shallow and wide, this method is called 'Direct Current Reverse Polarity' (DCRP) welding procedure.When the machine is set on straight polarity, the electrons flow from the electrode to the plate, concentrating most of the heat on the work. With reverse polarity, the flow of electrons is from the plate to the electrode, thus causing a greater concentration of heat at the electrode. Because of this intense heat, the electrode tends to melt off; therefore, direct current reverse polarity (DCRP) requires a larger diameter electrode than direct current straight polarity (DCSP). Notice that DCSP produces a narrow, deep weld. Since the heat is concentrated on the work, the welding process is more rapid and there is less distortion of the base metal. Overall, straight polarity is preferred over reverse polarity because you can achieve better welds. DCRP forms a wide and shallow weld and is rarely used in the GTAW process. The exception to this is when it is used to weld sections of aluminum or magnesium.DCRP has excellent cleaning power that results from the action of positive charged gas ions. When these gas ions strike the metal, they pierce the oxide film and form a path for the welding current to follow. This same cleaning action occurs in the reverse polarity half of an alternating current welding cycle.
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
What is the meaning of 6013 in welding electrode?
60 represents the 60000 psi tensile strength; just need to add three zero. The third number represents the welding position; number 1 represents all positions. The last number represents the type of arc; 3 represents medium to shallow penetration ac/dcrp.
