Embodiments of the invention can provide systems and methods for treating grinding wheels and bonded abrasive tools. A process in accordance with an embodiment of this invention is a cryogenic thermal cycling process for grinding wheels and bonded abrasive tools. Grinding wheels and bonded abrasive tools treated by cryogenic thermal cycling processes in accordance with embodiments of this invention can exhibit improved performance and service life during comparison testing against untreated tools.
C21D 6/04 - Durcissement par refroidissement au-dessous de 0° C
C21D 1/78 - Traitements thermiques combinés non prévus ci-dessus
B22F 3/24 - Traitement ultérieur des pièces ou objets
C04B 41/00 - Post-traitement des mortiers, du béton, de la pierre artificielle ou des céramiquesTraitement de la pierre naturelle
B24D 3/00 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants
B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
Embodiments of the invention can provide cryogenic treatment processes for diamond abrasive tools. A process in accordance with an embodiment of this invention is a cryogenic thermal cycling process for abrasive tools that utilize diamond materials. The process 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 materia! into the cycling chamber, wherein the internal temperature of the cycling chamber or abrasive too) can be controlled by adjusting the How rate of the at least one cryogenic material. The process can further include 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 to -10 degrees F per minute; and 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 to -0.25 degrees F per minute. The process can also include increasing the temperature of the cycling chamber or abrasive tool to a range from about -8(1 degrees F to about -100 degrees F at a rate of about 0.05 to 0.25 degrees F per minute; and further increasing the temperature of the cycling chamber or abrasive tool to about ambient temperature at a rate of about 0.5 to 10 degrees F per minute, wherein the process results in a strengthened and toughened abrasive tool. The process can be repeated multiple times.
C21D 6/04 - Durcissement par refroidissement au-dessous de 0° C
C21D 1/78 - Traitements thermiques combinés non prévus ci-dessus
C21D 9/22 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour foretsTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fraisesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour machines-outils coupantes
C30B 33/00 - Post-traitement des monocristaux ou des matériaux polycristallins homogènes de structure déterminée
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