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torker
11-18-2008, 09:40 PM
Guys.. I see the thread over on General about drying electrodes.
I have one of these... the 10 pound portable.
http://www.gullco.com/index_files/PDFs/Ovens.pdf
I love these things. I've used plenty of them in the field and in smaller shops.
My shop..being on the smaller side...this is what I chose also.
I really like the slide out tray. Makes it very handy.
Contrary to the advice to use an old fridge...When you take your lo-hy rods out of one of these sukkers.. you had better be havin really thick insulated gloves on and you better hope you don't have to pack them very far.
They are hotter than hell.
That's how lo-hy rods are supposed to be kept.
A fridge with lightbulb don't cut it.
Yes...it will keep your other rods dry enough...but it's not good enough for the likes of 7018 etc.
And you don't just throw any ol' rods in a rod oven either.
6010/11 for example. I saw a weldor fail a pipe test numerous times until they discovered he'd thrown a bunch of 6010 in the main oven the night before "so he'd pass his test for sure". The cellulose coating was so dry it went up in a vapour.
I'm strongly suggesting that you check with the rod maker to see if you should be throwin their non LH rods in an oven. It's a no no for a lot of rods.
Ya...you can get away with damp 7018 in your shop for the most part.
You'll have some ugly porosity for the first inch or two...but you prolly overwelded it anyway so it'll be ok.
There's a machine shop here in town...he's like the "Driveshaft Guru".
He's welded thousands of driveshafts. All with 7018 that he keeps in open boxes that sit on a shelf in his drafty ol' shop.
You can tell when he's busy...the rod is "sorta" dry...only the first inch of the welds have porosity. If he's been slow...some of the driveshaft welds have porosity that goes almost all the way around the weld.
He does such a nice job of the machining that his driveshaft would prolly stick together with bubblegum so the poor welds seem to workout for him.

You need dry rods?
LOL..I saw this years ago.
I was welding a shutdown at a pulpmill. the "regular" weldor was supposed to go out in the far reaches of the place to weld a big geezuz electric motor hanger deal to a wide flange upright. The motor had to weigh 500 pounds or better.
Long drive out there....it was pouring rain.
Get out there...oh geez...he forgot welding rods.
Being the lazy company man he was...he went out to the back of the welding rig with a flashlight and found a few 7018 rods floating in the rainwater on the deck.
He brings them in the pumphouse...all drippin wet. Twists one up...jams it into the steel and just held it there. It was bone dry in short order. The motor hanger still hangs there years later.
I woulda drove back...but he got away with it.
Russ

macona
11-18-2008, 11:33 PM
Gullco make some good stuff. Their Kat tractors are some of the best. I still have one of the speed control units out of one here for a future project.

I got my dad an old incubator (Non-egg) from school. Worked good.

ahidley
11-19-2008, 06:44 AM
Great info... Thanks..

hornluv
11-19-2008, 09:27 AM
I actually just bought a Gullco oven (the 10A) off eBay. I don't weld everyday, so would it be fine for the rods to only have it plugged in when I need it or will the flux be damaged? If it would be fine, how long should I leave them in the oven before using them?

torker
11-19-2008, 11:04 AM
I actually just bought a Gullco oven (the 10A) off eBay. I don't weld everyday, so would it be fine for the rods to only have it plugged in when I need it or will the flux be damaged? If it would be fine, how long should I leave them in the oven before using them?
That's the one I have. I'm curious what you gave for that? They are about $160Cnd new.
This whole "rod drying" thing can get very complicated with some of todays electrodes.
Rule of thumb I use...If I have a container of open rods in the shop that I need to use with this lil oven...if the tray is to be filled.. I allow 3 hours. Anything around half full then I give two hours.
Rods really shouldn't be kept that hot for too long.
I transfer them into HEATED self sealing plastic storage containers after they are dry.
The oven is carried to jobsites and plugged into the portable to keep the rods dry again..after I open the storage containers.
Russ

hornluv
11-19-2008, 02:31 PM
I got it for $124 with the shipping. I tried to find what they cost new, but that was fruitless. I couldn't find a price anywhere. I figured it was a decent deal since the imported ones were going for around $150 new.