HEAVY UNIT WEIGHT HOT ROLLING METHOD FOR SHEET BARS, AND STEEL MILL EQUIPMENT THEREFOR

Title:

HEAVY UNIT WEIGHT HOT ROLLING METHOD FOR SHEET BARS, AND STEEL MILL EQUIPMENT THEREFOR

Document Type and Number:

WIPO Patent Application WO/1998/045062

Kind Code:

A1

Abstract:

A sheet bar of 20 to 50 mm in thickness produced by continuous casting on a sheet bar caster is passed as they are through a first straightener, coiled in an up-end state into an up-end sheet bar coil, then the up-end sheet bar coil is uncoiled, passed through a second straightener, subjected to finish rolling, and coiled into a hot coil. This method is advantageous in that the quality and yield of the product and the production efficiency are improved compared with the conventional slab casting-large draft rolling method, and the equipment costs including the costs of construction and equipment maintenance are reduced.

Inventors:

NITOH TAKATSUGU (JP)
KIMISHIMA HIDEHIKO (JP)

Application Number:

PCT/JP1998/001528

Publication Date:

October 15, 1998

Filing Date:

April 02, 1998

Export Citation:

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Assignee:

KAWASAKI STEEL CO (JP)
NITOH TAKATSUGU (JP)
KIMISHIMA HIDEHIKO (JP)

International Classes:

B22D11/00; B21B1/26; B21B1/46; B21B27/02; B21B37/60; B21C37/08; B21C37/083; B21C47/00; B21C47/02; B21D1/00; B22D11/12; B21B13/02; B21B15/00; B21B27/08; B21B31/04; B21B45/00; (IPC1-7): B21B1/46; B21B1/26

Foreign References:

JPS5992103A	1984-05-28
JPH0761488B2	1995-07-05
JPH0688072B2	1994-11-09

Other References: