Method for controlling a hot strip rolling line

A control method for a hot strip rolling line, the hot strip rolling line having a finishing train for rolling flat a rolling stock made of metal, the finishing train having a plurality of roll stands, through which the rolling stock passes in succession in a direction of passage, the hot strip rolling line also having a cooling section through which the rolling stock passes, downstream of the finishing train, the method comprising:

• determining initial values, each initial value characterizing an energy content for a segment of the rolling stock at or before the segment enters the finishing train;
• feeding the initial values to a model for the hot strip rolling line;
• determining trackings by tracking each segment as the segment passes through the finishing train and the cooling section;
• determining energy content influences by identifying how the energy content of each segment is influenced as the segment passes through the finishing train and the cooling section;
• feeding the trackings and the energy content influences to the model;
• determining an expected energy content value for each segment at a predetermined location between a first roll stand and the cooling section so as to continuously and in real time determine expected energy content values, the expected energy content values being determined using the model, the initial values, the trackings and the energy content influences;
• determining a target energy content progression for each segment from the predetermined location until the segment passes out of the cooling section, each energy content progression being determined using a corresponding expected energy content value;
• producing manipulated influences by manipulating the energy content influences from the predetermined location until the segment passes out of the cooling section, as a function of the target energy content progression;
• and
• activating cooling facilities downstream of the predetermined location in the direction of passage, according to the manipulated influences.

A non-transitory computer readable storage medium storing a computer program, which when executed by a computer causes the computer to perform a control method for a hot strip rolling line, the hot strip rolling line having a finishing train for rolling flat a rolling stock made of metal, the finishing train having a plurality of roll stands, through which the rolling stock passes in succession in a direction of passage, the hot strip rolling line also having a cooling section through which the rolling stock passes, downstream of the finishing train, the method comprising:

• determining initial values, each initial value characterizing an energy content for a segment of the rolling stock at or before the segment enters the finishing train;
• feeding the initial values to a model for the hot strip rolling line;
• determining trackings by tracking each segment as the segment passes through the finishing train and the cooling section;
• determining energy content influences by identifying how the energy content of each segment is influenced as the segment passes through the finishing train and the cooling section;
• feeding the trackings and the energy content influences to the model;
• determining an expected energy content value for each segment at a predetermined location between a first roll stand and the cooling section so as to continuously and in real time determine expected energy content values, the expected energy content values being determined using the model, the initial values, the trackings and the energy content influences;
• determining a target energy content progression for each segment from the predetermined location until the segment passes out of the cooling section, each energy content progression being determined using a corresponding expected energy content value;
• producing manipulated influences by manipulating the energy content influences from the predetermined location until the segment passes out of the cooling section, as a function of the target energy content progression;
• and
• activating cooling facilities downstream of the predetermined location in the direction of passage, according to the manipulated influences.

A hot strip rolling line comprising:

• a finishing train to roll flat a rolling stock made of metal, the finishing train having a plurality of roll stands, through which the rolling stock passes in succession in a direction of passage;
• a cooling section through which the rolling stock passes, downstream of the finishing train
• a control computer having a processor to:
• determine initial values, each initial value characterizing an energy content for a segment of the rolling stock at or before the segment enters the finishing train;
• feed the initial values to a model for the hot strip rolling line;
• determining trackings by tracking each segment as the segment passes through the finishing train and the cooling section;
• determine energy content influences by identifying how the energy content of each segment is influenced as the segment passes through the finishing train and the cooling section;
• feed the trackings and the energy content influences to the model;
• determine an expected energy content value for each segment at a predetermined location between a first roll stand and the cooling section so as to continuously and in real time determine expected energy content values, the expected energy content values being determined using the model, the initial values, the trackings and the energy content influences;
• determine a target energy content progression for each segment from the predetermined location until the segment passes out of the cooling section, each energy content progression being determined using a corresponding expected energy content value;
• produce manipulated influences by manipulating the energy content influences from the predetermined location until the segment passes out of the cooling section, as a function of the target energy content progression;
• and
• activate cooling facilities downstream of the predetermined location in the direction of passage, according to the manipulated influences.