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Automatic process of laminar cooling and coiling area of u200bu200bpackaging steel strip
by：Hongmei
2021-03-15
Automatic process of laminar cooling and coiling area of u200bu200bpackaging steel strip
After the strip steel enters the person, the computer will calculate the setting of the coiler and calculate the reference value required for the control of the coiling zone.
When the strip head leaves the end frame of the finishing mill and ends with the head coiler, the speed of the hot-running roller table is controlled by the computer to be higher than the speed of the final frame of the finishing mill group (that is, ahead), so that the roller table will feed the belt. A forward pull of steel prevents wrinkling of the head. After the head bites into the coiler, the speed of the roller table is synchronized with the speed of the finishing mill. When the belt tail leaves the reduction frame of the finishing mill, the computer controls the speed of the roller table to make it slower than the steel throwing speed of the finishing mill, so that the roller table gives a backward pulling force to the strip to prevent the strip tail from wrinkling.
When the strip is running on the exit side of the finishing mill, the computer controls the coiling temperature of the strip by pre-setting and dynamically adjusting the number of cooling water sections of the laminar cooling device and the water spray mode.
The coiled steel coil is placed on the transport chain by the unloading trolley and transported to the next process. The computer judges whether the operator has issued a 'coil inspection request' for the steel coil. If so, the steel coil is sent to On the inspection line, the inspection results are input to the computer through the human-machine interface device for printing reports.
After the steel coil is weighed, the weighing machine transmits the measured weight of the steel coil to the computer, and the computer checks the weighing result to determine whether the weight is reasonable or not, and an alarm message is generated. If the weighing is normal, the computer will set the 'weighing complete flag' and output the print command and the steel coil number to the printer, and print the report.
So far, the control of the rolling stock by the process computer is over, and the control and management of the steel coil in the steel coil warehouse and the finished product warehouse are completed by the production control computer.
The automation objects and contents of the laminar cooling and coiling area are as follows:
(1) The setting of each equipment, the setting of the leading rate, lagging rate, deceleration rate and deceleration starting point of the output roller table; the opening degree of the side guide plate, pinch roller and assist roll of the coiler; clamp The advance rate of the feeding roller, the assisting roller and the reel; the tension torque, the bending torque and the acceleration torque of the reel; the setting of the lifting amount of the unloading trolley.
(2) Automatic control of coiling temperature.
(3) Side spray water and control of cooling water on the output roller table.
After the strip steel enters the person, the computer will calculate the setting of the coiler and calculate the reference value required for the control of the coiling zone.
When the strip head leaves the end frame of the finishing mill and ends with the head coiler, the speed of the hot-running roller table is controlled by the computer to be higher than the speed of the final frame of the finishing mill group (that is, ahead), so that the roller table will feed the belt. A forward pull of steel prevents wrinkling of the head. After the head bites into the coiler, the speed of the roller table is synchronized with the speed of the finishing mill. When the belt tail leaves the reduction frame of the finishing mill, the computer controls the speed of the roller table to make it slower than the steel throwing speed of the finishing mill, so that the roller table gives a backward pulling force to the strip to prevent the strip tail from wrinkling.
When the strip is running on the exit side of the finishing mill, the computer controls the coiling temperature of the strip by pre-setting and dynamically adjusting the number of cooling water sections of the laminar cooling device and the water spray mode.
The coiled steel coil is placed on the transport chain by the unloading trolley and transported to the next process. The computer judges whether the operator has issued a 'coil inspection request' for the steel coil. If so, the steel coil is sent to On the inspection line, the inspection results are input to the computer through the human-machine interface device for printing reports.
After the steel coil is weighed, the weighing machine transmits the measured weight of the steel coil to the computer, and the computer checks the weighing result to determine whether the weight is reasonable or not, and an alarm message is generated. If the weighing is normal, the computer will set the 'weighing complete flag' and output the print command and the steel coil number to the printer, and print the report.
So far, the control of the rolling stock by the process computer is over, and the control and management of the steel coil in the steel coil warehouse and the finished product warehouse are completed by the production control computer.
The automation objects and contents of the laminar cooling and coiling area are as follows:
(1) The setting of each equipment, the setting of the leading rate, lagging rate, deceleration rate and deceleration starting point of the output roller table; the opening degree of the side guide plate, pinch roller and assist roll of the coiler; clamp The advance rate of the feeding roller, the assisting roller and the reel; the tension torque, the bending torque and the acceleration torque of the reel; the setting of the lifting amount of the unloading trolley.
(2) Automatic control of coiling temperature.
(3) Side spray water and control of cooling water on the output roller table.
