Title:
PLATE ROLLING MILL AND PLATE ROLLING METHOD
Document Type and Number:
WIPO Patent Application WO/2009/113413
Kind Code:
A1
Abstract:
Disclosed is a plate rolling mill wherein a kiss roll-tightening state occurring before rolling, and deviations in offset of work rolls in the right/left or up/down directions of a rolling mill during rolling are eliminated, and warpage of a plate and meandering or camber caused by a thrust force produced between a work roll and a reinforcing roll are eliminated. The plate rolling mill, comprising a pair of upper and lower work rolls being driven by an electric motor, and a pair of upper and lower reinforcing rolls, is provided with a device that loads an external force in the substantially horizontal direction from the entrance side or exist side of the rolling mill and is located at least one work roll body portion or shaft portion on the work side and drive side of each of the upper and lower work rolls, respectively, characterized in that the external force is supported by the project block of a rolling mill housing through a work roll chock, or supported by a work roll chock supporting member connected with a reinforcing roll chock, and a value obtained by dividing the offset in the rolling direction between the shaft center positions of a work roll and a reinforcing roll by the sum of the radius of the work roll and the radius of the reinforcing roll is 0.0025 or less for both the upper and lower rolls. A plate rolling method using the plate rolling machine is also provided.
Inventors:
OGAWA, Shigeru (6-3 Otemachi 2-chome, Chiyoda-k, Tokyo 71, 10080, JP)
小川茂 (〒71 東京都千代田区大手町二丁目６番３号新日本製鐵株式会社内 Tokyo, 10080, JP)
ISHII, Atsushi (6-3 Otemachi 2-chome, Chiyoda-k, Tokyo 71, 10080, JP)
小川茂 (〒71 東京都千代田区大手町二丁目６番３号新日本製鐵株式会社内 Tokyo, 10080, JP)
ISHII, Atsushi (6-3 Otemachi 2-chome, Chiyoda-k, Tokyo 71, 10080, JP)
Application Number:
JP2009/053793
Publication Date:
September 17, 2009
Filing Date:
February 24, 2009
Export Citation:
Assignee:
NIPPON STEEL CORPORATION (6-3 Otemachi 2-chome, Chiyoda-ku Tokyo, 71, 10080, JP)
新日本製鐵株式会社 (〒71 東京都千代田区大手町二丁目６番３号 Tokyo, 10080, JP)
OGAWA, Shigeru (6-3 Otemachi 2-chome, Chiyoda-k, Tokyo 71, 10080, JP)
小川茂 (〒71 東京都千代田区大手町二丁目６番３号新日本製鐵株式会社内 Tokyo, 10080, JP)
新日本製鐵株式会社 (〒71 東京都千代田区大手町二丁目６番３号 Tokyo, 10080, JP)
OGAWA, Shigeru (6-3 Otemachi 2-chome, Chiyoda-k, Tokyo 71, 10080, JP)
小川茂 (〒71 東京都千代田区大手町二丁目６番３号新日本製鐵株式会社内 Tokyo, 10080, JP)
International Classes:
B21B29/00; B21B13/14; B21B37/00
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg.5-1, Toranomon 3-chom, Minato-ku Tokyo, 105-8423, JP)