LN25 & CC Machine

[Wheats]

As I understand it, if you have a CC machine (SAE300), larger self shielded flux core wire runs better through an LN25. What wire size would you recommend for general repair of farm implements/heavy equipment? Also, does anyone run flux core for hard surfacing? If so, what do you use?

[Welder Dave]

1/16, .068 or 5/64" depending on brand would be the most common. You need to determine the strength requirements and the basic self-shielded wire isn't designed for dynamic loading like on heavy equipment. The wire designed for such applications is quite a bit more expensive. Flux-core hardfacing requires different drive rolls (U-groove). Smallest diameters generally require shielding gas but some don't. It works pretty good.

[Popeye an old miner]

As I understand it, if you have a CC machine (SAE300), larger self shielded flux core wire runs better through an LN25. What wire size would you recommend for general repair of farm implements/heavy equipment? Also, does anyone run flux core for hard surfacing? If so, what do you use?

NR 233 or NR 232 works very good on heavy equipment and runs good on CC. I use it all the time on mining machinery, 1/16 is what size i run, but 068 and 072 work well too. I dont do much hardfacing at all, we use very hard AR plate like AR 400 and AR 500. Sonmetimes we use some stuff called Cruesabro 8000, really hard stuff, make sure you preheat any of the AR plate if you use it though. Maybe one of the other fellas can clue you in about hardfacing wire

[.RC.]

AFAIK using CC in a wire feeder, you can not do anything other then flat. I did a bit of it years ago and it was strange, you pulled the trigger, the wire came out and stuck to the work, the power source went under load, then the end burned off and welding started.

[diesel625]

Ive never run a ln25, but have run the Miller 12vs on cc many times. For general farm repair, I like to use coreshield 11. Usually in 1/16”. I’ve used it to build miles of pipe fence, cattle guards, trusses, and serval other things. For equipment repair, I like to use coreshield 8. I’ve never had an issue with the wire sticking to the work as mentioned above. I can run it stacked like 6010, or really smooth like 7018. Doesn’t matter the position in my case. It leaves excellent looking welds every time. I’ve run it off numerous power sources with no issue. These are the only types of flux cored wire I’ve ran through the suitcase. I’ve never heard faced with it.

[Popeye an old miner]

AFAIK using CC in a wire feeder, you can not do anything other then flat. I did a bit of it years ago and it was strange, you pulled the trigger, the wire came out and stuck to the work, the power source went under load, then the end burned off and welding started.

My guess is you might have been using an E70T type wire, that stuff is only for flat work, E71T wire will run in any position on CC or CV, i had an old Miller BIG 40 years ago and ran that wire all day long with no trouble in any position. Even today with my 502D with the CV capability, there is times it seems to go easier on CC for whatever crazy reason

[123weld]

Also, does anyone run flux core for hard surfacing? If so, what do you use?

ive used stoody super 20, in a 1/16 dia., it was $1200 a 33lb roll. ( high dollar cuz its not only good, but w/stood high heat). id think there would be stuff less $

[Welder Dave]

ive used stoody super 20, in a 1/16 dia., it was $1200 a 33lb roll. ( high dollar cuz its not only good, but w/stood high heat). id think there would be stuff less $

That's a specialty wire so not a fair comparison.

[gundog77]

Just so you know. If the welding you are wanting to do is code work you best have the correct equipment and procedures even if you can burn the wire in CC.