Title:
HOT-ROLLED STEEL SHEET MANUFACTURING METHOD AND MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/111663
Kind Code:
A1
Abstract:
Provided are a hot-rolled steel sheet manufacturing method and manufacturing device, by which a hot-rolled steel sheet having excellent surface properties and fine texture can be manufactured.
Specifically provided is a hot-rolled steel sheet manufacturing method, wherein a heating unit, a descaling unit, a finishing rolling mill line, a cooling unit disposed in the finishing rolling mill line, and a quenching unit disposed just behind the finishing rolling mill line are used, and by controlling the operations of the heating unit, the cooling unit, and the quenching unit, the temperature (T1) of a material to be rolled on the finishing rolling mill line entrance side, the temperature (T2) of the material to be rolled on the final stand entrance side of the finishing rolling mill line, and the temperature (T3) of the material to be rolled on the quenching unit exit side are controlled. Also provided is a hot-rolled steel sheet manufacturing device which is provided with a heating unit, a descaling unit, a finishing rolling mill line, a cooling unit disposed in the finishing rolling mill line, a quenching unit disposed just behind the finishing rolling mill line, and a control means, and controls T1, T2, and T3 by controlling the operations of the heating unit, the cooling unit, and the quenching unit by the control means.
Inventors:
TACHIBANA, Hisayoshi (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
橘 久好 (〒41 大阪府大阪市中央区北浜４丁目５番３３号 住友金属工業株式会社内 Osaka, 〒5410041, JP)
橘 久好 (〒41 大阪府大阪市中央区北浜４丁目５番３３号 住友金属工業株式会社内 Osaka, 〒5410041, JP)
Application Number:
JP2011/055266
Publication Date:
September 15, 2011
Filing Date:
March 07, 2011
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜４丁目５番３３号 Osaka, 〒5410041, JP)
TACHIBANA, Hisayoshi (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜４丁目５番３３号 Osaka, 〒5410041, JP)
TACHIBANA, Hisayoshi (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
International Classes:
B21B1/26; B21B45/00; B21B45/02; B21C51/00
Attorney, Agent or Firm:
YAMAMOTO, Noriaki et al. (3rd Floor Oak Building Kyobashi, 16-10, Kyobashi 1-chome, Chuou-k, Tokyo 31, 〒1040031, JP)
Claims: