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Setting calculation of cold rolling of packaging steel strip
by：Hongmei
2021-03-15
Setting calculation of cold rolling of packaging steel strip
It is the main task of the cold tandem rolling computer control (process automation level) to calculate the set value of the cold tandem rolling mechanisms through multiple mathematical models.
In order to achieve correct setting calculations, the process computer also needs to be equipped with steel coil tracking (also known as logistics tracking or data tracking), data collection and processing, model adaptation and model self-learning, etc. 2-1 shows the functions related to the setting calculation.
The setting calculation can be divided into: preset grate, recalculation (for rolling force model adaptation), post setting calculation (after model adaptation), and continuous cold rolling or pickling- The dynamic variable specification setting calculation of the rolling mill combined group.
The cold rolling setting calculation can be divided into two parts. The first part is the basic part, which is the thickness setting calculation. It will give the following setting values: roll gap value for each stand, relative speed value for each stand , The main speed value (threading and steady state rolling), the tension setting value between the stands, the setting value of other auxiliary equipment.
Another part of the model is used for the calculation of the plate shape setting. It will give: the set value of the bending force of each frame, the set value of the roll shift position of each frame, and the setting of the amount of coolant.
The calculation results of all these set values u200bu200bare the operations that the rolling mill can achieve. It will be sent to the basic automation, which is executed by the basic automation automatic position control, constant pressure control, speed control, water valve control and other programs, so that each mechanism can Set the required position and speed for calculation to ensure normal milk production and good strip head quality.
It is the main task of the cold tandem rolling computer control (process automation level) to calculate the set value of the cold tandem rolling mechanisms through multiple mathematical models.
In order to achieve correct setting calculations, the process computer also needs to be equipped with steel coil tracking (also known as logistics tracking or data tracking), data collection and processing, model adaptation and model self-learning, etc. 2-1 shows the functions related to the setting calculation.
The setting calculation can be divided into: preset grate, recalculation (for rolling force model adaptation), post setting calculation (after model adaptation), and continuous cold rolling or pickling- The dynamic variable specification setting calculation of the rolling mill combined group.
The cold rolling setting calculation can be divided into two parts. The first part is the basic part, which is the thickness setting calculation. It will give the following setting values: roll gap value for each stand, relative speed value for each stand , The main speed value (threading and steady state rolling), the tension setting value between the stands, the setting value of other auxiliary equipment.
Another part of the model is used for the calculation of the plate shape setting. It will give: the set value of the bending force of each frame, the set value of the roll shift position of each frame, and the setting of the amount of coolant.
The calculation results of all these set values u200bu200bare the operations that the rolling mill can achieve. It will be sent to the basic automation, which is executed by the basic automation automatic position control, constant pressure control, speed control, water valve control and other programs, so that each mechanism can Set the required position and speed for calculation to ensure normal milk production and good strip head quality.
