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US 2024/0247344 A1Published application
Pcbn sintered compact
AssigneeDiamond Innovations, Inc.
InventorLawrence Dues
Life of this patent
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Abstract
The present application is a new improvement in the fine-grained cubic boron nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN with a metallic binder system and is sintered under HPHT conditions. The improvement incorporates alloys of aluminum in the metallic binder system. The invention has proved beneficial in the machining of cast iron.
Claims20
A sintered body, comprising:
- a cBN layer comprising 80-95 vol % cBN;
- an aluminum source;
- an interface;
- a substrate comprising cemented tungsten carbide (WC);
- and
- a working surface,
- wherein chromium (Cr) is present at the working surface as an alloy of the Cr and aluminum source.
4 more elements
A sintered body, comprising:
- a cBN layer comprising 80-95 vol % cBN;
- an aluminum source comprising at least one of titanium aluminide (TiAl), nickel aluminide (Ni3Al), or a combination thereof;
- an interface;
- a substrate comprising cemented tungsten carbide (WC);
- and
- at least one Group VIII metal, and at least one Group V, Group VI, or Group VII metal,
- wherein the Group V, Group VI, or Group VII metal is present as an alloy with the aluminum source in the cBN layer away from the interface.
4 more elements
A sintered body, comprising:
- a cBN layer comprising 80-95 vol % cBN;
- an aluminum source comprising at least one of titanium aluminide (TiAl), nickel aluminide (Ni3Al), or a combination thereof;
- an interface;
- a substrate comprising cemented tungsten carbide (WC);
- and
- at least one Group VIII metal, and at least one Group V, Group VI, or Group VII metal,
- wherein chromium (Cr) is present at the interface.
4 more elements
Dependencies are inferred from the claim text.