B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
B23D 65/00 (2006.01) B22F 1/02 (2006.01) B24D 3/06 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2076097
60SD00552 DIAMOND PELLETS AND SAW BLADE SEGMENTS MADE THEREWITH ABSTRACT OF THE DISCLOSURE The present invention addresses the foregoing problems and many more in the diamond saw blade and segment art. One aspect of the present invention comprises a method for making handleable, strong, discrete metal-clad abrasive particle pellets. This method comprises the steps of (a) spraying onto a bed of gas-fluidized abrasive particles a slurry of metallicpowder, a binding agent, and a volatile solvent, for a time until each abrasive particle is coated with at least about 20 wt-% of said metallic powder, (b) recovering said metal powder-coated abrasive particles substantially devoid of said volatile solvent; and (c) heading said recovered coated abrasive particles under conditions to form a sintered continuous metal coating enveloping said abrasive particles. The resulting sintered metal-clad particle pellets form another aspect of the present invention. Another aspect of the present invention comprises: (a) placing a plurality of abrasive pellets, each comprising an abrasive particle coated with at least about 20 wt-% sintered metal, and a source of braze metal in a mold cavity; and (b) heating the contents of such mold cavity under conditions comprising temperature and pressure to form an abrasive particle-containing metal saw blade segment containing interconnected porosity. The resulting saw blade segment forms another aspect of the present invention. A further aspect of the present invention is a method for improving the sawing of substrates with saw blades retaining abrasive particle-containing metal saw blade segments having a lengthwise extent which follows the cutting edge of said saw blade. This method comprises: (a) placing in a mold cavity a plurality of abrasive pellets, each comprising anabrasive particle coated with at least about 20 wt-% metal, in an array of at least two rows parallel with the lengthwise extent of said segment, and a source of braze metal; and (b) forming said saw blade segment from said pellets and braze metal in said mold cavity. The saw blade retaining the segments forms at least a pair of furrows in a substrate being sawed therewith for stabilizing the blade during the sawing of said substrate.
Clark Thomas J.
Matarrese Roger R.
Mceachron Roger W.
Sinigaglia Sergio
Clark Thomas J.
Company General Electric
Craig Wilson And Company
Matarrese Roger R.
Mceachron Roger W.
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