US 10,814,366 B2 · Coil width control method and apparatus

Abstract

Disclosed is a coil width control method including: a step in which a control unit generates a prediction model for predicting the width shrinkage of a coil, which occurs in the heat-treatment process and post-treatment process of a cold-rolled steel sheet production process, on the basis of historical operating results; a step in which the control unit receives the input width of the coil entering the heat-treatment process; and a step in which the control unit predicts the output width of the coil after the post-treatment process on the basis of the received input width and the conditions of the cold-rolled steel sheet production process, and controls in-furnace temperature and in-furnace tension of the heat-treatment process and elongation of the post-treatment process.

Claims8

Dependent claims

A coil width control method comprising:

generating, using a control unit, a prediction model for predicting a width shrinkage of a coil, which occurs in a heat-treatment process and post-treatment process of a cold-rolled steel sheet production process, on the basis of historical operating results;
receiving, using the control unit, an input width of the coil entering the heat-treatment process;
predicting, using the control unit, an output width of the coil, after the post-treatment process, on the basis of the received input width and operating conditions of the cold-rolled steel sheet production process;
and
controlling, using the control unit, in-furnace temperature and in-furnace tension of the heat-treatment process and elongation of the coil caused by the post-treatment process as a function of the predicted output width.

2 more elements

A coil width control apparatus comprising:

an input width measurement unit configured to measure an input width of a coil entering a heat-treatment process in a cold-rolled steel sheet production process, the cold rolled sheet production process including the heat-treatment process and a post-treatment process;
a heat-treatment control unit configured to control in-furnace temperature and in-furnace tension of the heat-treatment process;
a post-treatment control unit configured to control elongation of the coil caused by the post-treatment process;
and
a control unit configured to generate a prediction model for predicting a width shrinkage of the coil, which occurs in the heat-treatment process and the post-treatment process, on the basis of historical operating results, the control unit predicting an output width of the coil after the post-treatment process on the basis of the input width received from the input width measurement unit and operating conditions of the cold-rolled steel sheet production process, and controlling the in-furnace temperature and the in-furnace tension through the heat-treatment control unit on the basis of the predicted output width and the prediction model, and controlling the elongation through the post-treatment control unit.

2 more elements

Dependencies are inferred from the claim text.

Coil width control method and apparatus

Life of this patent

Coil width control method and apparatus

Life of this patent

Abstract

Claims8