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US 11,613,796 B2Granted
Cemented carbide and composite cemented carbide roll for rolling
AssigneeHitachi Metals, Ltd.
InventorTakumi Ohata
Life of this patent
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Abstract
A cemented carbide comprising 55-90 parts by mass of WC particles and 10-45 parts by mass of a Fe-based binder phase; the binder phase having a composition comprising 0.5-10% by mass of Ni, 0.2-2% by mass of C, 0.5-5% by mass of Cr, 0.2-2.0% by mass of Si, and 0.1-5% by mass of W, the balance being Fe and inevitable impurities, and containing 0.05-2.0% by area of Fe—Si—O-based particles.
Claims13
A cemented carbide comprising 55-90 parts by mass of WC particles and 10-45 parts by mass of a binder phase containing Fe in an amount of 50% by mass or more;
- said binder phase having a composition comprising
- 2.5-10% by mass of Ni,
- 0.2-2% by mass of C,
- 0.5-5% by mass of Cr,
- 0.2-2.0% by mass of Si, and
- 0.1-5% by mass of W,
- the balance being Fe and inevitable impurities, and
- containing 0.05-2.0% by area of Fe—Si—O-containing particles.
5 more elements
Dependencies are inferred from the claim text.