Abrasive tool making process – material – or composition – Miscellaneous
Patent
1989-05-26
1991-09-03
Dixon, Jr., William R.
Abrasive tool making process, material, or composition
Miscellaneous
51305, 51307, 51309, B24D 300
Patent
active
050450921
ABSTRACT:
Cemented tungsten carbide rock bit inserts have diamond particles dispersed therein for enhanced hardness and wear resistance. The cobalt matrix is primarily the face centered cubic crystal structure for enhanced ductility and toughness. Such inserts are formed by introducing excess non-diamond carbon beyond the stoichiometric proportion in the tungsten carbide. The inserts are pressed at a temperature and pressure where diamond is thermodynamically stable and cooled while maintaining the pressure sufficiently high to prevent decomposition of diamond crystals formed at the elevated temperature. Diamond crystals may be dispersed throughout the cemented tungsten carbon or may be more concentrated near the surface than in the interior.
REFERENCES:
patent: 3745623 (1973-07-01), Wentorf Jr. et al.
patent: 4171973 (1979-10-01), Hara et al.
patent: 4231762 (1980-11-01), Hara et al.
patent: 4525178 (1985-06-01), Hall
patent: 4604106 (1986-08-01), Hall et al.
patent: 4694918 (1987-09-01), Hall
Dixon Jr. William R.
Smith International Inc.
Thompson Willie J.
LandOfFree
Diamond-containing cemented metal carbide does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diamond-containing cemented metal carbide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diamond-containing cemented metal carbide will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1006404