Lincoln AC225 S

[rogagogo]

Hi all, my first post on your page... well I can't seem to locate info. using my code: 8712-705 I need DC to use 7018 rod so I bought a 300amp full wave rectifier. will age have any effect on the transformer adding this rectifier? I rarely use this welder only projects in the garage. 1/4in. Fillet welds, Lap Joints. Thanks for your advice.

[propanehotrod]

It would be a lot easier to just buy a box of 7018 AC

[MinnesotaDave]

It would be a lot easier to just buy a box of 7018 AC

I was thinking the same

[rogagogo]

I watched a guy weld using AC 7018 Rod on his Lincoln AC225. after he installed a Rectifier and welded it was a big difference, the flow was better, less splatter as well. I was mainly trying to find info. on my code. the video was on YouTube. thanks

[ccawgc]

You will need an inductor to go with the rectifier to stabilize the DC arc and a noise suppressor. Using the AC rod will be a lot cheaper.
I have an old 300 amp Glen stick welder that has higher OCV. It burns anything I try.
and welds great. Have used it to repair a lot of farm equipment.

[Continuum]

Hi all, my first post on your page... well I can't seem to locate info. using my code: 8712-705 I need DC to use 7018 rod so I bought a 300amp full wave rectifier. will age have any effect on the transformer adding this rectifier? I rarely use this welder only projects in the garage. 1/4in. Fillet welds, Lap Joints. Thanks for your advice.

Agree with others. DC is desirable for other rods. But why 7018/14? Why not 6011? Maybe 6013? 1/4 mild steel will weld fine w both rods

Returning to your OP, your question re ‘age on transformer’ makes little sense to me. Perhaps you can clarify.

[Continuum]

...so I bought a 300amp full wave rectifier..

Are you fully prepared for the buildup to convert your buzzer to DC? There are many builds on WW you can search. I have found several consistent issues w this type of build. Most buy this 25$ rectifier and think it done. But the rectifier alone is only part of the system. Most ignore and subsequently fail upon the thermal considerations. You’ll need a choke of considerable inductance. This will need to run the secondary current so the windings must be sized accordingly. Lastly you’ll need to rework your cabling with dinse or other swappable connectors to switch AC DCEP DCEM.

It’s a fun DIY project for sure. If done correctly I think a DC conversion really doesn’t save money if you are considering your time as money.

Regards

[Sparkie1957]

It can be done but I would suggest buying a Miller Dialarc 250 or Lincoln Idealarc250 and be done with it. Nothing experimental about those machines. Unless you just want to do a conversion project.


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[Welder Dave]

Is this the smaller counter top AC 225S? Not worth even trying to convert it to DC.

[MinnesotaDave]

It can be done but I would suggest buying a Miller Dialarc 250 or Lincoln Idealarc250 and be done with it. Nothing experimental about those machines. Unless you just want to do a conversion project.


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Yep, and either can be had for under $300. Sometimes near $200.

Excellent machines that weld much better than a converted 225 AC machine, or their 225 AC/DC machine.

I have 2 of the little lincolns in the student classroom. They work, but they are unimpressive on DC when compared to Dialarc or inverter machines.