Title:
冷間圧延機における板厚制御方法
Document Type and Number:
Japanese Patent JP7294278
Kind Code:
B2
Abstract:
To provide a plate thickness control method that improves a product yield of a cold rolled steel sheet by reducing an amount of steel strip cut and discarded in the front and rear of a welding part when proportional-plus-integral control is continued with respect to an unsteady part including the welding part of the steel strip in a cold rolling mill.SOLUTION: In a plate thickness control method in a cold rolling mill of a steel strip 6 including a welding part 11 in which a preceding material 61 and a succeeding material 62 are joined, a proportional-plus-integral control with a roll gap of a rolling stand 4 as a final control element is performed, the proportional-plus-integral control is continued with respect to an unsteady part 21 in the front and rear of the welding part 11, and after the welding part 11 passes a rolling position of the rolling stand 4, an integration term reset of initializing an integration term of the proportional-plus-integral control is performed.SELECTED DRAWING: Figure 1
Inventors:
Yuki Kubota
Rei Masuda
Kamiya Kiyo Kaede
Shunichi Takakura
Tetsuya Fukushima
Rei Masuda
Kamiya Kiyo Kaede
Shunichi Takakura
Tetsuya Fukushima
Application Number:
JP2020145510A
Publication Date:
June 20, 2023
Filing Date:
August 31, 2020
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
B21B37/18; B21B37/20
Domestic Patent References:
| JP53016344A | ||||
| JP2010213548A | ||||
| JP50041752A |
Attorney, Agent or Firm:
Kenichiro Ochiai