Title:
鋼板の製造方法
Document Type and Number:
Japanese Patent JP7423487
Kind Code:
B2
Abstract:
To provide a steel plate production method capable of sufficiently reducing a load added to a rolling machine even when rolling a high-tensile steel plate and also capable of adequately preventing edge crack.SOLUTION: A steel plate production method includes a cold rolling process comprising a first cold rolling step carried out using a high-Young's modulus work roll having the Young's modulus in a surface layer part of 400 GPa or more, and a second cold rolling step carried out using a low-Young's modulus work roll having the Young's modulus in the surface layer part of less than 400 GPa. The ratio of a cumulative rolling reduction by the first cold rolling to a gross rolling reduction in the cold rolling process is more than 60.6% but less than 81.9%.SELECTED DRAWING: None
Inventors:
Takeshi Suzuki
Kenichiro Hara
Kazuya Kimishima
Masayoshi Kobayashi
Yasuyuki Fujii
Kenichiro Hara
Kazuya Kimishima
Masayoshi Kobayashi
Yasuyuki Fujii
Application Number:
JP2020159684A
Publication Date:
January 29, 2024
Filing Date:
September 24, 2020
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
B21B1/22; B21B27/02
Domestic Patent References:
| JP10249407A | ||||
| JP8243603A | ||||
| JP9239410A |
Foreign References:
| WO1999048627A1 |
Attorney, Agent or Firm:
Norito Yamao
Noriko Cauldron
Noriko Cauldron