Title:
PRODUCTION METHOD FOR HOT-ROLLED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2014/141617
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce or inhibit plate breakage in completely continuous hot rolling by improving joining properties of edge peripheries of sheet-bar joint portions in a plate width direction, without any accompanying increase in the size of a joining device. When using completely continuous hot rolling to produce a hot-rolled steel sheet, an end shape, in a plate width direction, of a tail end of a preceding sheet bar and/or a tip end of a succeeding sheet bar is formed in a rough rolling step so as to be a tapered shape or a curved shape, and a shear cutter is subsequently used to shear the tail end of the preceding sheet bar and the tip end of the succeeding sheet bar such that at least a portion of the tapered shape and/or the curved shaped is retained.
Inventors:
MIYAKE MASARU (JP)
HINO YOSHIMICHI (JP)
MORI KAZUYA (JP)
HINO YOSHIMICHI (JP)
MORI KAZUYA (JP)
Application Number:
PCT/JP2014/001107
Publication Date:
September 18, 2014
Filing Date:
February 28, 2014
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B1/26; B21B15/00; B21C51/00
Foreign References:
| JPH08141603A | 1996-06-04 | |||
| JPH07290111A | 1995-11-07 | |||
| JP2008000804A | 2008-01-10 |
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
Akira Kumasaka (JP)
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