Title:
THICK STEEL PLATE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/031169
Kind Code:
A1
Abstract:
The objective is to provide a thick steel plate manufacturing method with which a high-quality thick steel plate with minimal variation in material quality can be obtained. This thick steel plate manufacturing method, which manufactures a thick steel plate by means of a hot-rolling process, a heated correction process, and an accelerated cooling process, in this order, is characterized by having between the heated correction process and the accelerated cooling process a descaling process in which descaling water is sprayed twice, with the total energy density of the descaling water sprayed on the surface of the thick steel plate in the two sprayings in the descaling process being 0.07 J/mm2 or greater, the second spraying of descaling water occurring no less than 0.5s after the first spraying of descaling water, and the surface temperature of the steel plate immediately before the second spraying of descaling water being no greater than the Ar3 transformation point.
More Like This:
Inventors:
TAMURA YUTA (JP)
ADACHI KENJI (JP)
ADACHI KENJI (JP)
Application Number:
PCT/JP2015/004056
Publication Date:
March 03, 2016
Filing Date:
August 14, 2015
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21B45/08; B21B1/38; B21B45/02
Domestic Patent References:
| WO2010110473A1 | 2010-09-30 |
Foreign References:
| JP2012152761A | 2012-08-16 | |||
| JP2012077325A | 2012-04-19 |
Other References:
See also references of EP 3187275A4
Attorney, Agent or Firm:
KUMASAKA, Akira et al. (JP)
Akira Kumasaka (JP)
Akira Kumasaka (JP)
Download PDF:
Previous Patent: THICK STEEL PLATE MANUFACTURING FACILITY AND MANUFACTURING METHOD
Next Patent: HOT-MELT ADHESIVE AGENT
Next Patent: HOT-MELT ADHESIVE AGENT