Scrap carbide / tungsten - Page 3

price back up

Sent another box of carbide to dave. 100% satisfied. Fast turnaround. Spot on weights. Thanks again

Just wondering if outer metal on ?tranformers? are carbide? I tried to post a pic but I`ll need to read more on that! It has like a yellow tape on the outside. Just had to ask & yes, I did try a few searches. Thank you in advance!....GAS

No, I've never seen any carbide used in electronics

price check

Yes... Price posted on first page is current

I have carbide inserts from scrap snow plows and from an implement dealer...they were replacing the carbide cutters on the big road graders. Holy hell I almost took this stuff in as steel... How do I separate the carbide from the steel...it's like brazed in or something I can't get that kind of heat on the whole thing...my grandfather said to just gouge the face out with a torch because the carbide doesn't melt...is that true?

It takes 6000 degrees to melt carbide....you can get the braze off with a torch it doesn't take that much heat to remove are they the large blades that are about 12" x 3"

send a picture of it to frank@carbidecuttingtools.com. We get tons of snow plow blades but they are 12" x 3" and they are bolted on to the plow blade so they can be reground.

I ended up selling to a local yard I was able to cut them down to 18 inch sections and use an old heat treat oven to knock the carbide out (the grader blades) and the snowplow blades was just a matter of gouging the face out and smacking the carbide out in chunks.

Must have been super easy with the oven. How many pounds did you end up having

247 carbide 5,190 prepared iron. And now it's just about time for this years blade changes...

That's a really good haul.. Just remember we pay for shipping over 40 pounds and (2/23/14) we are paying $10.50 lb for carbide w/ braze

I found another source. For those of you wondering where to get carbide in quantity, look at excavation and earthmoving companies as well as commercial snow plows. Graders, both box and belly will have carbide cutters, the teeth on end loaders (the very very big ones will have carbide embedded in a weldable tooth) I was at an implement dealers looking around and sure enough...carbide all over the place.

Ohh and yes a oxy/acetylene torch DOES get hot enough to get carbide to I dunno how to describe it...crumble I guess so be careful of that.

Originally Posted by armygreywolf

Ohh and yes a oxy/acetylene torch DOES get hot enough to get carbide to I dunno how to describe it...crumble I guess so be careful of that.

Here's an interesting piece on that. WC is actually put together in a powder. Not melted. The reason it crumbles is because the forming reaction between Carbon and Tungsten occurs around 2,000C but the "Melting Point" is about 3,000C. I would assume it's the added energy that starts to disrupt the nice structure caused by Ostwald ripening during sintering?

WC is technically produced by converting powdery tungsten metal or tungsten oxide with carbon black or graphite at temperatures between 1400 °C and 2000 °C in a graphite lined furnace (carbothermic reaction).WC is always produced in powdery form.

Because WC decays during melting, the production of compact pieces is only possible via sintering (comparable to the burning of clay) (see also WC-Co).

Reforming a large, properly formed product would most likely require going through all the sintering steps again.

Granted this is for WC and I didn't come across any info for W₂C. I went out on a limb and by carbide you meant Tungsten Carbide?

Some WC info
A little bit more about Cobalt being added
Sintering Metals

Morning Dave ( & Frank?)!

Sent you guys email a couple days ago, and never heard back. Does anyone know if this buyer is still active? Trying to find someone who buys pure 99.5% Tungsten, and you guys are the only ones who come close to this on the forums.

Thanks