Title:
PLATE MATERIAL LOOP STATE MEASUREMENT METHOD AND LOOP STATE MEASUREMENT APPARATUS AND PLATE MATERIAL ROLLING METHOD
Document Type and Number:
Japanese Patent JP2023001809
Kind Code:
A
Abstract:
To provide a plate material loop state measurement apparatus and the like which can accurately and stably measure the loop state of a plate material.SOLUTION: A loop state measurement apparatus 100 according to the present invention comprises: 2 two-dimensional imaging devices 1, 2 which are provided along the width direction of a plate material S and generate photographed images by performing imaging such that an edge of the plate material is included within an imaging visual field from above a pass line PL of a hot-rolling line; and a calculation device 3 which calculates coordinates of the edge of the plate material at a plurality of positions in the rolling direction of the plate material by using a method of stereo three-dimensional view on the basis of the photographed images and calculates the length of the edge of the plate material S between 2 pairs of roll pairs WRa, WRb adjacent to each other on the basis of the calculated coordinates of the edge of the plate material at the plurality of positions.SELECTED DRAWING: Figure 4
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Inventors:
ISEI YOSHIHITO
OTA TAKESHI
SASAKI TAKASHI
SHIBATA MASAKI
OTA TAKESHI
SASAKI TAKASHI
SHIBATA MASAKI
Application Number:
JP2021102759A
Publication Date:
January 06, 2023
Filing Date:
June 21, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B38/00; B21B37/48; B21B37/50; B21B38/04
Attorney, Agent or Firm:
Patent Attorney Corporation Makoto International Patent Office