Cryogenic treatment processes for diamond abrasive tools
First Claim
Patent Images
1. A process to treat an abrasive tool using a cycling chamber, the process comprising:
- (a) introducing an abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature;
(b) introducing at least one cryogenic material into the cycling chamber, wherein the internal temperature of the cycling chamber or abrasive tool can be controlled by adjusting the flow rate of the at least one cryogenic material;
(c) decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees Fahrenheit (F). to about −
100 degrees F. at a rate of about −
0.5 degrees F. per minute to about −
10 degrees F. per minute;
(d) further decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
275 degrees F. to about −
325 degrees F. at a rate of about −
0.05 degrees F. per minute to about −
0.20 degrees F. per minute;
(e) increasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees F. to about −
100 degrees F. at a rate of about 0.05 degrees F. per minute to about 0.20 degrees F. per minute; and
(f) further increasing the temperature of the cycling chamber or abrasive tool to about ambient temperature at a rate of about 0.5 degrees F. to about 10 degrees F., and resulting in a strengthened and toughened abrasive tool.
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Abstract
Embodiments of the invention can provide cryogenic treatment processes for diamond abrasive tools. One process in accordance with an embodiment of this invention can include introducing an abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature; and introducing at least one cryogenic material into the chamber, wherein the internal temperature of the chamber or tool can be controlled by adjusting the flow rate of the at least one cryogenic material. The process can result in a strengthened and toughened abrasive tool. The process can be repeated multiple times.
24 Citations
20 Claims
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1. A process to treat an abrasive tool using a cycling chamber, the process comprising:
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(a) introducing an abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature; (b) introducing at least one cryogenic material into the cycling chamber, wherein the internal temperature of the cycling chamber or abrasive tool can be controlled by adjusting the flow rate of the at least one cryogenic material; (c) decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees Fahrenheit (F). to about −
100 degrees F. at a rate of about −
0.5 degrees F. per minute to about −
10 degrees F. per minute;(d) further decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
275 degrees F. to about −
325 degrees F. at a rate of about −
0.05 degrees F. per minute to about −
0.20 degrees F. per minute;(e) increasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees F. to about −
100 degrees F. at a rate of about 0.05 degrees F. per minute to about 0.20 degrees F. per minute; and(f) further increasing the temperature of the cycling chamber or abrasive tool to about ambient temperature at a rate of about 0.5 degrees F. to about 10 degrees F., and resulting in a strengthened and toughened abrasive tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A process for forming an abrasive tool having at least one diamond-based material, the process comprising:
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(a) introducing the abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature; (b) introducing at least one cryogenic material into the cycling chamber, wherein the internal temperature of the chamber or abrasive tool can be controlled by adjusting the flow rate of the at least one cryogenic material; (c) decreasing the temperature of the cycling chamber or abrasive tool from ambient temperature to a range from about −
80 degrees Fahrenheit (F). to about −
100 degrees F. at a rate of about −
0.5 degrees F. per minute to about −
10 degrees F. per minute;(d) further decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
275 degrees F. to about −
325 degrees F. at a rate of about −
0.05 degrees F. per minute to about −
0.20 degrees F. per minute;(e) increasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees F. to about −
100 degrees F. at a rate of about 0.05 degrees F. per minute to about 0.20 degrees F. per minute; and(f) further increasing the temperature of the cycling chamber or abrasive tool to about ambient temperature at a rate of about 0.5 degrees F. per minute to about 10 degrees F. per minute. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A process to treat an abrasive tool using at least one cryogenic material in a cycling chamber, the process comprising:
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decreasing the temperature of the cycling chamber or abrasive tool from ambient temperature to a range from about −
80 degrees Fahrenheit (F) to about −
100 degrees F. at a rate of about −
0.5 degrees F. per minute to about −
10 degrees F. per minute;further decreasing the temperature of the cycling chamber or abrasive tool to a range from about −
275 degrees F. to about −
325 degrees F. at a rate of about −
0.05 degrees F. per minute to about −
0.20 degrees F. per minute;increasing the temperature of the cycling chamber or abrasive tool to a range from about −
80 degrees F. to about −
100 degrees F. at a rate of about 0.05 degrees F. per minute to about 0.20 degrees F. per minute; andfurther increasing the temperature of the cycling chamber or abrasive tool to about ambient temperature at a rate of about 0.5 degrees F. per minute to about 10 degrees F. per minute, and resulting in a strengthened and toughened abrasive tool. - View Dependent Claims (20)
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Specification