Composite diamond abrasive, process for preparation, and drillin

Details Composite diamond abrasive, process for preparation, and drillin Composite diamond abrasive, process for preparation, and drillin

1988-11-16

1991-03-26

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

428698, 428932, 428627, 51293, 51309, 76DIG12, 407119, B32B 1504, B32B 900, B24B 300, B24D 300

Patent

active

050028286

ABSTRACT:
An abrasive is provided having an active phase comprising a sintered product comprising diamond grains, each grain being linked directly to its neighbors by bridging to exhibit a polycrystalline structure, and a support consisting essentially of tungsten carbide. The tungsten carbide support comprises a chromium binder phase including 6 to 15% of carbide. The relative proportions by weight of nickel and chromium of the binder phase vary from 60 to 90% to 40 to 100%, respectively. The abrasive is made by placing a layer of diamond grains into a cupel, covering this layer with a tungsten carbide layer including a nickel-chromium mixture to provide the support, subjecting the stack thus produced to a temperature and a pressure sufficient to cause sintering in the plastic phase of the diamond grains and to assure the binding of the compact thus obtained on the support. Drilling and machine tools can be equipped with the abrasive product of the invention.

REFERENCES:
patent: 3745623 (1973-07-01), Wentorf, Jr. et al.
patent: 3912500 (1975-10-01), Vereschagin et al.
patent: 4224380 (1980-09-01), Bovenkerk
patent: 4259090 (1981-03-01), Bovenkerk
patent: 4311490 (1982-01-01), Bovenkerk
patent: 4370149 (1983-01-01), Hara
patent: 4505746 (1985-03-01), Sumitomo
patent: 4798026 (1989-09-01), Cerceau
patent: 4824442 (1989-04-01), Cerceau
patent: 4875907 (1989-10-01), Phaal et al.

Affiliated with

Also associated with

Rating

Composite diamond abrasive, process for preparation, and drillin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite diamond abrasive, process for preparation, and drillin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite diamond abrasive, process for preparation, and drillin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-616592