Title:
圧延材の形状制御システム
Document Type and Number:
Japanese Patent JP7447779
Kind Code:
B2
Abstract:
To provide a shape control system of rolled stock which maintains an actual shape to a target shape by appropriately switching the state of a valve of a coolant spray even when a reverse phenomenon occurs.SOLUTION: Coolant level control for modifying a level which decides a proportion of holding time of ON-state of a valve occupied in a control period of shape control is performed. In the coolant level control, further, first restriction or second restriction is selected based on comparison between a target plate thickness and a plate thickness threshold. A difference between the first restriction and the second restriction is such a point that the second restriction limits lowering to a lower side level of a modification level as compared to the first restriction. In the coolant level control, further, it is decided whether a reverse phenomenon occurs or not by using an estimation model. When it is judged that the reverse phenomenon occurs, it is judged that the target plate thickness is above a plate thickness threshold. When the former is above the latter, the plate thickness threshold is updated by using the target plate thickness in a zone in which it is decided that the reverse phenomenon occurs.SELECTED DRAWING: Figure 1
More Like This:
| WO/1988/009229 | HOT ROLLING METHOD AND EQUIPMENT FOR FRAGILE STRIP |
| JPH03138014 | PROFILE CONTROL METHOD OF HOT ROLLED STEEL PLATE |
Inventors:
Minoru Arai
Application Number:
JP2020211274A
Publication Date:
March 12, 2024
Filing Date:
December 21, 2020
Export Citation:
Assignee:
Toshiba Mitsubishi Electric Industrial Systems Co., Ltd.
International Classes:
B21B37/32; B21B38/02; B21C51/00
Domestic Patent References:
| JP2006136895A | ||||
| JP2006346721A | ||||
| JP2010125453A | ||||
| JP2005334910A | ||||
| JP2009274101A | ||||
| JP2007069253A |
Foreign References:
| US20090084153 | ||||
| CN104384204A |
Attorney, Agent or Firm:
Patent Attorney Takada / Takahashi International Patent Office
Previous Patent: Automatic driving control system
Next Patent: Method for manufacturing gas diffusion layer
Next Patent: Method for manufacturing gas diffusion layer