Title:
METHOD FOR CONTINUOUSLY HOT ROLLING STEEL BILLET
Document Type and Number:
Japanese Patent JP3212256
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To stably and continuously pass a rolled stock of a different kind without breaking at the joining part by removing in advance the range of an operation variable corresponding to the breaking condition of the joining part in the same continuous body from the common part.
SOLUTION: A cross angle range (≥0.6°) corresponding to the breaking condition of a joining part (F1 crown proportional increasing amount is ≤0.2%) based on a sulfur content in steel of this rolled stock is removed in advance from the common cross angle range (0.52° to 0.80°) which is suitable for the target crown of each rolled stock obtained in an F1 stand, the range 0.52° to 0.60° is obtained, the cross angle is fixed at the central value 0.56° within this range with a roll cross mechanism, the continuous rolling is executed on the above condition while changing the bender load of a work roll bender 4 so that the target outlet side crown is obtained. Therefore, the joining continuous body of the different kind of rolled stock can be rolled without fear of breaking the joining part between stands.
Inventors:
Yoshikiyo Tamai
Toshiki Hiruta
Toshio Imae
Katsuhiro Takebayashi
Hideyuki Nikaido
Toshiki Hiruta
Toshio Imae
Katsuhiro Takebayashi
Hideyuki Nikaido
Application Number:
JP23167096A
Publication Date:
September 25, 2001
Filing Date:
September 02, 1996
Export Citation:
Assignee:
Kawasaki Steel Co., Ltd.
International Classes:
B21B33/00; B21B37/00; B21B37/28; B21B37/38; (IPC1-7): B21B37/38; B21B37/00; B21B37/28
Domestic Patent References:
| JP1058022A |
Other References:
【文献】特許3068791(JP,B2)
Attorney, Agent or Firm:
Eiichi Kobayashi
Previous Patent: An axial fan and its motor assembling member
Next Patent: DOORMAT EQUIPPED WITH VOICE GENERATING FUNCTION
Next Patent: DOORMAT EQUIPPED WITH VOICE GENERATING FUNCTION