Title:
SETTING-UP OF CUTTING LENGTH OF HOT STEEL
Document Type and Number:
Japanese Patent JPS57144619
Kind Code:
A
Abstract:
PURPOSE: To greatly reduce the dispersion of cutting errors of a hot steel with respect to the target length of the cut steel after the latter is cooled, by considering the change of the coefficient of linear expansion accompanied with the transformation of the steel.
CONSTITUTION: The coefficient αT% of linear expansion of steel is considerably changed at the transformation point of A1 in the vicinity of 720°C (Tcz). Therefore, the calculation of correcting the amount of the thermal expansion is made in consideration with this fact for setting-up a cutting length, thereby the dispersion of cutting errors with respect to the target length of steel after the cooling of the steel is greatly reduced.
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Inventors:
FUKUKITA KOUJI
OGAWA AKIRA
HISAKAWA HIROAKI
INOMATA CHIYUUJIROU
AIHARA YUKIO
TSUJI KIYOUJI
OGAWA AKIRA
HISAKAWA HIROAKI
INOMATA CHIYUUJIROU
AIHARA YUKIO
TSUJI KIYOUJI
Application Number:
JP2739981A
Publication Date:
September 07, 1982
Filing Date:
February 26, 1981
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
B26D7/06; B23D23/00; B23D33/02; B23D36/00; (IPC1-7): B23D33/02; B26D7/06