Coated carbide tap

Details Coated carbide tap Coated carbide tap

2006-12-12

2006-12-12

Turner, Archene (Department: 1775)

Stock material or miscellaneous articles

Composite

Of inorganic material

C076S117000, C428S408000, C428S472000, C428S701000, C428S702000, C428S704000

Reexamination Certificate

active

07147939

ABSTRACT:
A coated carbide tap comprises a substrate consisting of tungsten carbide cemented with 12 to 16% by weight cobalt with additions of small amounts of transition metal carbides added to restrain grain growth, and may also contain low levels of impurities that might be picked up during processing. The substrate is coated with a layer of metal nitrides, carbides, carbonitrides, borides and/or oxides, the metal being chosen from one or more of the following: aluminum, silicon and the transition metals from Groups IVa, Va, and VIaof the Periodic Chart. The coating may comprise a monolayer and/or alternating layers optionally with varying chemical composition. To reduce friction, a top outer layer comprised of molybdenum disulphide; molybdenum disulphide and transition metals, or any combination thereof; carbon; carbon and transition metal carbides, or any combination thereof; carbon and a transition metal, or any combination thereof; and/or carbon nitride may be either co-deposited as a single layer or deposited in multiple or alternating layers to the coating. The coated carbide tap of the invention can be used at cutting speeds at least three times faster than conventional taps without chipping or breaking the tap.

REFERENCES:
patent: 3882579 (1975-05-01), Peacock
patent: 3900592 (1975-08-01), Kennedy et al.
patent: 4054426 (1977-10-01), White
patent: 4204886 (1980-05-01), Bens
patent: 4643951 (1987-02-01), Keem et al.
patent: 4680218 (1987-07-01), Kimura et al.
patent: 4708542 (1987-11-01), Emanuelli
patent: 4826365 (1989-05-01), White
patent: 5268216 (1993-12-01), Keem et al.
patent: 5327806 (1994-07-01), Houser
patent: 5374471 (1994-12-01), Yoshimura et al.
patent: 5487626 (1996-01-01), Von Holst et al.
patent: 5580196 (1996-12-01), Thompson
patent: 5619000 (1997-04-01), Ederyd et al.
patent: 5701578 (1997-12-01), Liu
patent: 5762538 (1998-06-01), Shaffer
patent: 5942318 (1999-08-01), Soderberg et al.
patent: 5965253 (1999-10-01), Rechberger et al.
patent: 6071469 (2000-06-01), Rohlin et al.
patent: 6077596 (2000-06-01), Hashimoto et al.
patent: 6086980 (2000-07-01), Foster et al.
patent: 6103357 (2000-08-01), Selinder et al.
patent: 6213692 (2001-04-01), Guehring et al.
patent: 6220797 (2001-04-01), Ishii et al.
patent: 6221479 (2001-04-01), Waldenstrom et al.
patent: 6284366 (2001-09-01), Konig et al.
patent: 6511265 (2003-01-01), Mirchandani et al.
patent: 6521349 (2003-02-01), Konig et al.
patent: 6528171 (2003-03-01), Endler et al.
patent: 6655882 (2003-12-01), Heinrich et al.
patent: 6669747 (2003-12-01), Salmon
patent: 6685573 (2004-02-01), Hikosaka et al.
patent: 6858333 (2005-02-01), Henderer
patent: 6884499 (2005-04-01), Penich et al.
patent: 1266979 (2002-12-01), None
patent: 660129 (1951-10-01), None
patent: 2001316800 (2001-11-01), None
patent: 99/55929 (1999-11-01), None

Affiliated with

Also associated with

Rating

Coated carbide tap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coated carbide tap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coated carbide tap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3683962