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Title:
DIRECT OR INDIRECT HOT ROLLING METHOD
Document Type and Number:
Japanese Patent JPS5435852
Kind Code:
A
Abstract:

PURPOSE: To remove useless maintenance time and loss of iron, by detecting max. depth of defect of a hot slab by an induction heater and an optical scanner, and by feeding the slab having defect of depth not larger than limit defect depth to a hot rolling mill.


Inventors:
FUKUYAMA MASARU
Application Number:
JP10306977A
Publication Date:
March 16, 1979
Filing Date:
August 26, 1977
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B21B1/00; B21B1/02; B21B1/46; B21B38/00; B21B45/00; B21C51/00; C21D1/00; G01N21/89; G01N21/892; B21B15/00; (IPC1-7): B21B1/00; B21C51/00; C21D1/00