Title:
INTERNAL OXIDE LAYER THICKNESS ESTIMATION DEVICE, INTERNAL OXIDE LAYER THICKNESS ESTIMATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/097642
Kind Code:
A1
Abstract:
This internal oxide layer thickness estimation device estimates the thickness of an internal oxide layer formed in a hot-rolled steel sheet, the internal oxide layer thickness estimation device being characterized by comprising: a first temperature defining unit which defines the temperature of a to-be-estimated section, which is a section of an internal oxide layer in a hot-rolled steel sheet and is subjected to internal oxide layer thickness estimation; a second temperature defining unit which defines an internal oxidation start temperature at which internal oxidation of the hot-rolled steel sheet starts; a cumulative temperature calculation unit which calculates a cumulative temperature on the basis of the temperatures defined by the first temperature defining unit and the second temperature defining unit, and a prescribed time from an estimation start time which is the time at which estimation of the thickness of the internal oxide layer starts, to an estimation evaluation time; a first correlation expression derivation unit which derives a first correlation expression indicating the correlation between the cumulative temperature calculated by the cumulative temperature calculation unit and the estimation value of the thickness of the internal oxide layer; and an internal oxide layer thickness estimation unit which estimates the thickness of the internal oxide layer on the basis of the first correlation expression.
Inventors:
AKASHI TOORU (JP)
IKEDA KEITA (JP)
KONDO YASUMITSU (JP)
INOUE NAOKI (JP)
MINAMI AKINOBU (JP)
IKEDA KEITA (JP)
KONDO YASUMITSU (JP)
INOUE NAOKI (JP)
MINAMI AKINOBU (JP)
Application Number:
PCT/JP2021/040402
Publication Date:
May 12, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
G01N25/00; B21B38/00
Domestic Patent References:
| WO2020188812A1 | 2020-09-24 | |||
| WO2016152870A1 | 2016-09-29 |
Foreign References:
| CN101879530A | 2010-11-10 |
Other References:
NAKAKUBO, SHOHEI : "Calculation of internal oxidation behavior of silicon- or chromium-containing steels", KOBE STEEL WORKS ENGINEERING REPORTS, vol. 64, no. 2, 1 February 2014 (2014-02-01), pages 24 - 27, XP009536441, ISSN: 2188-0913
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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