Title:
METHOD FOR PRODUCING HIGH CARBON HOT ROLLED STEEL SHEET
Document Type and Number:
Japanese Patent JP3858546
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a high carbon hot rolled steel sheet excellent in workability and productivity, obviating spheroidizing annealing after hot rolling.
SOLUTION: High carbon steel containing, by mass, 0.2% C or more is subjected to hot rolling and is thereafter coiled at >650 to 720°C, or in a state in which intermediate temperature in the surface of a runner table is controlled to 650°C or more, the steel is coiled at >650 to 720°C, and within 20 min after the coiling, loaded to a slow cooling cover and retained at 600 to 720°C for at least 15 hr.
Inventors:
Nobuyuki Nakamura
Takeshi Fujita
Yukihiko Okazaki
Jun Taniai
Takeshi Fujita
Yukihiko Okazaki
Jun Taniai
Application Number:
JP2000008057A
Publication Date:
December 13, 2006
Filing Date:
January 17, 2000
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21D9/46; C22C38/00; (IPC1-7): C21D9/46; C22C38/00
Domestic Patent References:
| JP61159534A | ||||
| JP62109929A | ||||
| JP9324212A | ||||
| JP59205417A |
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Ryo Hashimoto