Whip and pause with 6013s? - Page 1

DCEP versus DCEN with STICK.

==========

QUOTE FROM ANOTHER SITE.
Link:

==========
QUOTE:

"... 3. Direct current electrode positive (DCEP) is what we used to call reverse polarity. Direct current electrode negative (DCEN) is what we used to call straight polarity. I suspect the same person who changed the word library to the learning resource center got a hold of these terms.
(...)
In DCEP the electricity flows into the tip of the welding rod and concentrates about two-thirds of the heat, which gives good penetration. DCEP is usually used on thicker steels.
(...)
In DCEN the electricity flows out of the rod, concentrating about one-third of the heat on the rod. Less penetration makes this a very good choice for thinner steels.
(...)
Right about now, some of you are hauling to your to tell me that I'm wrong about the penetration. Some journals say that DCEN gives better penetration. I had to look through three different journals before I found one that agreed with me. All agree that DCEP has the best weld characteristics. It also has cleaning action that DCEN doesn't have.
(...)
Its called welding theory, and my theory is that I've used DCEP on every dang thing from high-rises, nuclear weapons facilities, dams, and a dam power house! Not once did I ever use DCEN. Like the journal that supports my theory, I say that the better weld characteristics and the two-thirds heat at the end of the rod create a force and "there is a jet action and / or expansion of gases in the arc at the electrode tip. This expansion causes the molten metal to be propelled with great speed across the arc. The molten metal impacts the base metal with greater force. This heavy impact on the base metal helps to produce deep, penetrating welds." Modern Welding Althouse, Turnquist, Bowditch, and Bowditch." Now that is exactly how I would've put it ... well, more or less.
(...)
The Hobart School of Welding's Welding Guide also supports my theory: "Electrode negative (straight polarity) often is used when shallower penetration is required. Electrode positive (reverse polarity) generally is used when deep penetration is needed."
(...)
We also conducted an experiment by dragging a 1/8-in. rod on an 11-gauge shim. DCEP burned through after one and one-half inches. DCEN did not burn through until about three and a half inches. Now that I have backed up my theory with this highly scientific experiment, I am even more convinced!
(...)
I have no problem accepting that DCEN penetrates better in gas tungsten arc welding (GTAW). That's a whole different ball game because of the tungsten electrode. You can't apply much heat on the smaller diameter tungsten rods with DCEP because it melts away the tungsten. You can output more heat with DCEN, allowing for more penetration.
On some machines, a switch is available for changing from AC to DCEP or DCEN; on others, the leads have to be changed. ..."

DCEP versus DCEN with TIG.DCEP versus DCEN with STICK.==========QUOTE FROM ANOTHER SITE.Link: http://www.thefabricator.com/article/ar ... -you-knowr ==========QUOTE:"... 3. Direct current electrode positive (DCEP) is what we used to call reverse polarity. Direct current electrode negative (DCEN) is what we used to call straight polarity. I suspect the same person who changed the word library to the learning resource center got a hold of these terms.(...)In DCEP the electricity flows into the tip of the welding rod and concentrates about two-thirds of the heat, which gives good penetration. DCEP is usually used on thicker steels.(...)In DCEN the electricity flows out of the rod, concentrating about one-third of the heat on the rod. Less penetration makes this a very good choice for thinner steels.(...)Right about now, some of you are hauling to your to tell me that I'm wrong about the penetration. Some journals say that DCEN gives better penetration. I had to look through three different journals before I found one that agreed with me. All agree that DCEP has the best weld characteristics. It also has cleaning action that DCEN doesn't have.(...)Its called welding theory, and my theory is that I've used DCEP on every dang thing from high-rises, nuclear weapons facilities, dams, and a dam power house! Not once did I ever use DCEN. Like the journal that supports my theory, I say that the better weld characteristics and the two-thirds heat at the end of the rod create a force and "there is a jet action and / or expansion of gases in the arc at the electrode tip. This expansion causes the molten metal to be propelled with great speed across the arc. The molten metal impacts the base metal with greater force. This heavy impact on the base metal helps to produce deep, penetrating welds." Modern Welding Althouse, Turnquist, Bowditch, and Bowditch." Now that is exactly how I would've put it ... well, more or less.(...)The Hobart School of Welding's Welding Guide also supports my theory: "Electrode negative (straight polarity) often is used when shallower penetration is required. Electrode positive (reverse polarity) generally is used when deep penetration is needed."(...)We also conducted an experiment by dragging a 1/8-in. rod on an 11-gauge shim. DCEP burned through after one and one-half inches. DCEN did not burn through until about three and a half inches. Now that I have backed up my theory with this highly scientific experiment, I am even more convinced!(...)I have no problem accepting that DCEN penetrates better in gas tungsten arc welding (GTAW). That's a whole different ball game because of the tungsten electrode. You can't apply much heat on the smaller diameter tungsten rods with DCEP because it melts away the tungsten. You can output more heat with DCEN, allowing for more penetration.On some machines, a switch is available for changing from AC to DCEP or DCEN; on others, the leads have to be changed. ..."

If you want to learn more, please visit our website.

Explore more:
Polypropylene PP Extruded Biaxial Geogrid 2020 3030 ...
Who makes aluminum oxide?
CanDo Sitting Wedge Active Seat Wobble Cushion for ...

Jinertai supply professional and honest service.

If you are looking for more details, kindly visit E rod for thin metal welding.