METHOD OF GRAPHITIZATION Russian patent published in 2005 - IPC

FIELD: manufacture of articles from carbon materials, electrodes for example.

SUBSTANCE: articles made from carbon materials are heated in electrical furnace and are held to preset degree of graphitization. During heating and holding at heat, present magnitudes of temperature of characteristic point of articles located in end face of blank in center section of upper row is recorded. Moment of discontinuation of holding at heat and switching-off electric power is found from the following formula: : where γ is degree of graphitization; τ₁-τ₂ is time interval where graphitization takes place, h; F is function characterizing the time dependence of isothermal holding, h required for obtaining preset degree of graphitization versus graphitization temperature; T (τ) is present temperature of characteristic point of articles, °C; is present time, h.

EFFECT: reduced power requirements down to 5% at scheduled graphitization and down to 13% at forced graphitization.

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