Title:
熱延鋼板の平坦度予測方法
Document Type and Number:
Japanese Patent JP6939161
Kind Code:
B2
Abstract:
To make it possible to predict a flatness of a hot rolled steel sheet, which is wound in a coil form in a hot rolling process, with a good accuracy.SOLUTION: A true elongation strain difference distribution inherent in a hot rolled steel sheet is calculated in such a manner that a first elongation strain difference distribution, which occurs due to width direction temperature distribution of the hot rolled steel sheet before winding, and a second elongation strain difference distribution, which occurs due to a tightly winding force of the hot rolled steel sheet, are overlapped. A large deflection analysis by finite-element method or analysis with use of a theoretical model is performed with respect to the calculated true elongation strain difference distribution, thereby calculating a steepness of the hot rolled steel sheet, and predicting a flatness of the hot rolled steel sheet.SELECTED DRAWING: Figure 10
Inventors:
Toru Akashi
Seiji Ink
Isshio Shiokawa
Hiroki Matsubara
Takayuki Otsuka
Shinkuni Daisuke
Kazuki Yoshikawa
Seiji Ink
Isshio Shiokawa
Hiroki Matsubara
Takayuki Otsuka
Shinkuni Daisuke
Kazuki Yoshikawa
Application Number:
JP2017135737A
Publication Date:
September 22, 2021
Filing Date:
July 11, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21B38/02; B21B37/28; B21C47/02
Domestic Patent References:
| JP2005153011A | ||||
| JP2005211960A | ||||
| JP2007216246A |
Foreign References:
| WO2016042948A1 |
Other References:
柳ら,薄板巻き取り時のコイル変形の解析方法,塑性と加工,日本塑性加工学会,1998年 月 日,vol.39 no.444,pp. 51-55
Attorney, Agent or Firm:
Tetsuo Kanamoto
Koji Hagiwara
Koji Hagiwara