Title:
METHOD FOR COILING CONTINUOUS HOT ROLLING METAL STRIP
Document Type and Number:
Japanese Patent JP3774957
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the probability of occurrence of braking to two pieces on a steel strip just before the inlet side of pinch rolls by setting the drawing- down force of the pinch rolls just before the inlet side of a shear to be equal to the value shown with a specific equation or a larger value than the above in a time of cutting the metal strip.
SOLUTION: The drawing-down force of pinch rolls 4 is increased to a specific value P or beyond the P just before cutting a steel strip S with a shear 3. the specific value P is the value of being P=T/μ0, T is made as the tension of applying ion the steel strip S between the winding coiler K1 and a rolling machine 2, μ0 is made as the coefficient of dynamical friction. Therefore, because the following strip is fed out to the coiler side resisting to the force toward the rolling machine side generated caused by cutting while being pressed with the pinch rolls 4 without slipping, the generation degree of weaving can be made few. As a result, the generation of breaking two pieces just before the inlet side of the pinch rolls 4 can be made few.
Inventors:
Taichi Kukizaki
Kiyoshi Ueda
Toshio Imaseki
Kiyoshi Ueda
Toshio Imaseki
Application Number:
JP29060796A
Publication Date:
May 17, 2006
Filing Date:
October 31, 1996
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21C47/00; B65H23/198; B21B15/00; B21C47/26; (IPC1-7): B21C47/00; B21B15/00; B21C47/26; B65H23/198
Domestic Patent References:
| JP7236916A | ||||
| JP59174216A | ||||
| JP55136512A |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu