Cooling characteristics of cutting grain in grinding

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作者：
Kanazawa Univ, Kanazawa, Japan [1 ]
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来源：
CIRP Ann Manuf Technol | / 1卷 / 293-298期
关键词：
Abrasives - Ceramic cutting tools - Cooling - Heat transfer - Pyrometers - Pyrometry;
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摘要：
The temperature of a cutting grain when cutting has been completed is investigated experimentally and theoretically. As the model of the cutting grain, a conical tool of ceramic is used. The temperature of the grain at various times after cutting is measured using an infrared radiation pyrometer with an optical fiber. The cooling process of the cutting grain during air cutting is analyzed by reference to unsteady-state heat transfer theory. The cooling of the grain is extremely rapid, that is, the temperature of the grain decreases to one fourth of the maximum temperature in 1 ms after cutting. The maximum temperature of the cutting grain reached at the end of cutting is estimated to be the melting point of the work material.
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