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(Metal.) A process (invented about 1899 by Frederick W. Taylor and Maunsel B. White) for giving toughness to self-hardening steels. The steel is heated almost to fusion, cooled to a temperature of from 700 to 850 C. in molten lead, further cooled in oil, reheated to between 370 and 670 C., and cooled in air. スポンサード リンク
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