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mali325
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Join Date: Jun 2010
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Leaded Free Cutting Steels

06/12/2010 8:52 AM

Dear sirs,

I'd like to know about casting of leaded free cutting steels(e.g. 12L15 steel grade).

1.Is it possible to continuous casting of this steel grade?

2.Is Pb(Lead) added as shot or wire?

3.Is pb added to ladle or tundish or mould?
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HarryBurt
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#1

Re: Leaded Free Cutting Steels

06/12/2010 10:39 PM

Technology changes, but when I was in school, the steel passed through a chamber with a vacuum drawn it. The molten lead was sprayed into the steel as it passed through. This would work fine for a continuous process.

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Milo
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#2

Re: Leaded Free Cutting Steels

06/13/2010 11:24 PM

Density differential between Steel and lead is the essential problem for you to solve from your customer's point of view.

Sulfur and cracking is the yield issue that you will have to solve to minimize in process yield loss.

As you have not provided any details of your process: billet or bloom cast, electric furnace or BOF, This is about all the counsel I feel comfortable sharing.

You may contact me by clicking on my name and sending a private message.

Milo

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mali325
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Join Date: Jun 2010
Posts: 3
#3
In reply to #2

Re: Leaded Free Cutting Steels

06/14/2010 8:37 AM

Dear Milo,

There is a DIN standards for technical delivery of free cutting steels(DIN EN 10087).There are some Pb steel grade in this standard.I'd like to know about procedure for bloom or ingot production of leaded free cutting steel in electric furnace and ladle furnace.

Best Regards
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