Title:
厚鋼板の板反り検知方法及び板反り検知システム
Document Type and Number:
Japanese Patent JP7207367
Kind Code:
B2
Abstract:
To make it possible that an end of a warped thick steel plate does not collide a sensor or the like installed between rolls of a table roller.SOLUTION: A detection method for plate warpage of a thick steel plate comprises: a step of measuring, by using a non-contact type range finder 3, a distance to a surface of a thick steel plate, which is transported on a thick steel plate manufacturing line; a step of discriminating, by using a distance measurement value by the non-contact range finder and line speed information concerning the manufacturing line, a shape (upward warpage or downward warpage) of the thick steel plate; a step of calculating, by using the a distance measurement value by the non-contact range finder, self-weight distortion due to non-existence of support for a tip and a tail end of the thick steel plate at an opening between rolls on the manufacturing line, and self-weight distortion in a downward warped thick steel plate during distance measurement, an upward warpage quantity or a downward warpage quantity of the thick steel plate; and a step of stopping the manufacturing line when the calculated upward warpage quantity or downward warpage quantity exceeds each preset threshold.SELECTED DRAWING: Figure 1
Inventors:
Kurimoto Atsushi
Masayasu Okada
Kazuhiro Nitta
Naoto Kobayashi
Taiki Miyano
Masayasu Okada
Kazuhiro Nitta
Naoto Kobayashi
Taiki Miyano
Application Number:
JP2020091893A
Publication Date:
January 18, 2023
Filing Date:
May 27, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
B21B37/28; B21B38/02; B21C51/00; G01B21/20
Domestic Patent References:
| JP2017018983A | ||||
| JP5157550A | ||||
| JP5164535A | ||||
| JP59016625A | ||||
| JP2016087652A | ||||
| JP2000280016A |
Attorney, Agent or Firm:
Tetsuro Isomura
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori