Annealing cast iron bar stock

Home enthusiasts discuss their Foundry & Casting work.

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boaterri
Posts: 256
Joined: Sat Nov 20, 2004 2:28 pm
Location: Florida

Re: Annealing cast iron bar stock

Post by boaterri » Fri Aug 05, 2016 5:05 pm

Looks like good stuff, unfortunately, their smallest quantity is many life times of material for any of us home foundrymen.

Rick

Bastelmike
Posts: 18
Joined: Thu Sep 05, 2013 12:27 pm
Location: NRW, Germany

Re: Annealing cast iron bar stock

Post by Bastelmike » Thu Sep 01, 2016 1:22 pm

Harold,

they have this product:

http://www.glbsm.com/product-informatio ... rizers.pdf

Ist available in a paper bag, 40 kg. Enough for several lifetimes in a home foundry, I guess.

Mike

Harold_V
Posts: 17197
Joined: Fri Dec 20, 2002 11:02 pm
Location: Onalaska, WA USA

Re: Annealing cast iron bar stock

Post by Harold_V » Thu Sep 01, 2016 3:07 pm

Thanks for the link, Bastelmike. I was surprised to read that the ratios vary. Don't have a clue which one I have, but it's the one used by a foundry in Utah, where ductile iron is made from scrap steel.

There is much to know in regards to the chemistry of cast iron. Could prove to be a lifetime study!

Harold
Wise people talk because they have something to say. Fools talk because they have to say something.

jpfalt
Posts: 982
Joined: Sun Jan 05, 2003 12:55 pm

Re: Annealing cast iron bar stock

Post by jpfalt » Thu Sep 01, 2016 9:17 pm

The standard recipe for malleable iron is to pour gray cast iron into a steel mold to get white cast iron and then anneal. When you anneal white cast iron, the carbon precipitates in globs, rather than sheets and flakes. You won't be able to get back to gray cast iron unless you remelt the iron and pour into a sand or other refractory mold.

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