Title:
ROLLING MILL AND ZERO AJUSTMENT PROCESS IN ROLLING MILL
Document Type and Number:
WIPO Patent Application WO/2011/129453
Kind Code:
A1
Abstract:
Disclosed is a process of precisely adjusting the initial position (or zero point) of a working roll in a rolling mill. This process is realized in consideration of a finding that a force in the rolling direction is generated in a rolling mill during the conventional adjustment process in the kiss roll state, but the generated force is not affected by a thrust force applied to the roll. Specifically, the levels of the working and driving sides of a working roll are adjusted to the zero points, respectively such that the difference between the forces in the rolling direction which are applied to respective roll chocks on the working and driving sides of the working roll is substantially zero (in fact, falls within ±5% of the sum of the forces on the working and driving sides). As a result, it is possible to make the highly precise zero point adjustment of a working roll independent of the thrust force even if a thrust force is applied to rolls. This adjusting process is based on this technique.
Inventors:
KASAI, Daisuke (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
河西 大輔 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
ISHII, Atsushi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
河西 大輔 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
ISHII, Atsushi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
Application Number:
JP2011/059457
Publication Date:
October 20, 2011
Filing Date:
April 11, 2011
Export Citation:
Assignee:
NIPPON STEEL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
KASAI, Daisuke (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
河西 大輔 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
新日本製鐵株式会社 (〒71 東京都千代田区丸の内二丁目６番１号 Tokyo, 〒1008071, JP)
KASAI, Daisuke (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
河西 大輔 (〒71 東京都千代田区丸の内二丁目６番１号新日本製鐵株式会社内 Tokyo, 〒1008071, JP)
International Classes:
B21B37/00; B21B31/20; B21B37/58
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chome, Minato-k, Tokyo 23, 〒1058423, JP)
Claims: