Packaging steel strip thickness setting mathematical model of the profile

Packing set the introduction of mathematical model for cold rolling steel strip thickness setting calculation includes two parts, namely about the thickness of setting calculation and setting calculation about flatness. Below describe thickness setting model, mainly about flatness setting model is shown in chapter 7. Thickness setting calculation is also called the basic setting, because it besides need to calculate the roll gap, speed, tension and other parameters related to the thickness of the outside is also given in addition to the parameters related to the shape of all the other parameter Settings. Thickness setting is actually load distribution and thickness distribution of an implementation, in the case of thickness distribution is set to thickness distribution, Each frame exit thickness) Based on through the forward slip model and flow equations to determine the speed of each frame, considering the effect of the cold rolling speed is determined by the command speed and the relative speed of synthetic, therefore speed setting is the main and determine the value of each frame relative velocity. Same as the thickness distribution, Each frame exit thickness) Through the rolling force model on the basis, Computing) And bounce equation to determine the roll gap of each frame, each frame roll gap value calculation accuracy depends on the prediction precision of rolling force model, so how to determine the material hardness ( The resistance of the plastic deformation) The roll and rolled piece is the coefficient of friction between the two key. In order to make full use of the measured data to improve before sliding and rolling force model calculation accuracy, wide application of the model of adaptive and self-learning model. Cold rolling thickness setting calculation can be divided into: ( 1) Before setting calculation, is mainly used for wear belt set parameters such as rolling mill roll gap for calculation. ( 2) After setting calculation, mainly in this piece of steel rolling process of multiple model adaptive after correction is calculated. ( 3) Setting calculation of dynamic change specification, it is mainly used for the continuous cold rolling or pickling Tandem mill unit gets specifications for dynamic setting. But the above set set used in the calculation model is the same, also set a model for adaptive weight calculation of rolling force, See model adaptive) , need to be set calculation of all the data records, and according to the strategy to determine the load distribution of rolling ( Or the thickness distribution) After each frame according to the data record and a rack export thickness ( Namely the entry thickness) And the thickness of the export for the calculation of each model, finally to obtain the following Settings: ( 1) Wear a belt when the relative velocity value and the main frame to speed value ( The command speed for the frame synchronization, deceleration) And the determination of maximum speed. ( 2) Wear with each frame roll gap value. ( 3) Wear with the frame of rolling force. ( 4) Wear before and after the time frame and between the winding tension value and the low speed of its added value. ( 5) Before sliding wear with each frame. ( 6) Coolant dose calculation. ( 7) Steady speed when the frame of the roll gap of rolling correction. ( 8) The frame of rolling force when the steady speed of rolling. ( 9) At the end of the frame of the rolling force is critical. ( 10) Steady speed rolling in the frame of the forward slip. ( 11) Steady speed rolling tension setting. ( 12) Used for AGC frame elastic stiffness coefficient. ( 13) Used for the rolled piece plastic stiffness coefficient of AGC. ( 14) The length of the dynamic change specifications wedge. ( 15) Dynamic change specifications when the command speed factor. ( 16) Rolling torque and rolling power, etc.