(800) 853-2651
SHOP NOW

AC-DC welder

K

keh

Well-known Member

Lookng at a used small Lincoln AC-DC welder. Somebody want to fill me in on DC advantages? It's been a while since I read up on DC.

KEH
 
Keh. Right off I"m far from an expert welder although my experience with D.C welding is ,I could weld Horizontal (and vertical) with no problem of spotty weld overs, and slag deposits. I sold my straight A.C.welder and bought a A.C/D.C. Built a couple of Equiptment trailers . First welder I ever owned was a "SHUNT TYPE Marquett(sp) And I wished I would have kept it.
With that one, I was so confident I could weld clouds lol. D.C. For my son . Good choice. JMHO LOU
 
(quoted from post at 23:44:40 07/26/13) Keh. Right off I"m far from an expert welder although my experience with D.C welding is ,I could weld Horizontal (and vertical) with no problem of spotty weld overs, and slag deposits. I sold my straight A.C.welder and bought a A.C/D.C. Built a couple of Equiptment trailers . First welder I ever owned was a "SHUNT TYPE Marquett(sp) And I wished I would have kept it.
With that one, I was so confident I could weld clouds lol. D.C. For my son . Good choice. JMHO LOU
Click to expand...

What is a shunt type welder?
 
Dc runs smoother and works better for vertical and over head. Most rods will run better on dc. You can also run 7018 rod which is my rod of choice.
 
Like a rotary dimmer switch. The more amps required the shunt closes to keep power at the setting without burning the welder up. Best way I know how to explain it. You can google shunt type welders. LOU

PS link below is as close as a description as I can find.
poke here
 
Going to DC from AC is like night and day!!!! Every portable welder on the back of a welding truck is DC. If you ever needed to hire a welder and tried to save some money by letting him use the AC welder on site, he'd probably cuss out loud several times and hang up on you!
 
A shunt type welder is one that changes amperage by moving a core through a pair of secondary windings in the transformer. Any welder that has a crank or a large lever is probably a shunt type welder. They're often described as infinitely adjustable. The most common alternative is a welder that gets different fixed amperages from individual wires called taps which are connected to different locations on the windings of the transformer.

A tapped welder is one which changes amperages by clicking a lever on a dial with very little force, like a Lincoln buzz box, or has a series of outlets on the face of the welder marked with different amperage settings, and you plug your electrode holder cable into the hole with the amperage you want, like some old Forneys (and at least one old Lincoln model)is the most common alternative type of transformer welder. It's not infinitely adjustable because you can't (easily) go to any setting except those fixed settings. You can't dial in your amperage setting with perfect accuracy, but tapped welders don't go out of adjustment like shunt type welders.

Stan
 
keh...If the consideration is a small Lincoln AC/DC 225/125 buzz box which has an open circuit voltage less than 80V, electrodes such as E7018 with iron powder in the covering will be hard starting. E7018 can be used, but welding will be frustrating because the electrode easily sticks fast to the work piece due to the low OCV. Operating characteristics will not be those of an Idealarc 250, an inverter, or the typical Pipeliner motor/generator. However, DC will produce a smoother arc with less spatter than AC and welds just fine with 6011 or 6013.
 
You must log in or register to reply here.

Similar threads

W
Portable Welder
Replies
15
Views
592
WNYBill
W
Ultradog MN
Big honkin diode
Replies
3
Views
337
sotxbill
S
C
Welders.
Replies
3
Views
363
Hemmjo
Hemmjo
W
Breaker size with 225 Amp welder?
2
Replies
37
Views
1K
JMOR
J
M
New Welder
Replies
9
Views
351
Ultradog MN
Ultradog MN
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top