Uncoated cutting tool using brazed-in superhard blank

Details Uncoated cutting tool using brazed-in superhard blank Uncoated cutting tool using brazed-in superhard blank

2005-10-25

2009-08-18

Fridie, Willmon (Department: 3724)

Turning

Process of turning

C407S117000

Reexamination Certificate

active

07574948

ABSTRACT:
An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a braze alloy whereby there is a braze joint between the body and the polycrystalline cubic boron nitride blank. The braze alloy has a liquidus temperature of at least about 900 degrees Centigrade wherein the braze alloy is selected from the group comprising a nickel-gold braze alloy containing nickel and gold, a copper-gold braze alloy containing copper and gold, a silver-titanium braze alloy containing silver and titanium, and a silver-palladium braze alloy containing silver and palladium.

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