A control system for rolling plate thickness

Abstract

The invention discloses a roll plate thickness control method which comprises the following steps: feeding a steel plate into a rolling mill and performing first-pass rolling; monitoring the thicknesses of the steel plate in real time by use of a thickness meter before and after rolling; when the thickness meter measures that thickness real-time data of the steel plate before rolling exceeds set data of thickness before rolling by 2% but less than 5%, performing decelerated production by use of a rolling mill unit; when the thickness meter measures that thickness real-time data of the steel plate before rolling exceeds set data of thickness before rolling by more than 5%, halting the rolling mill unit. A thickness meter control system is used for feeding back test data to an industrial control module; when the roll plate thickness is measured to be out of a set value range, the rolling mill realizes operation from automatic deceleration to stoppage, steel band breakage caused by thickness fluctuation is avoided, the production cost is effectively saved, and especially the roll plate thickness control method is capable of better monitoring the roll plate thickness and facilitating operations of operating personnel on the basis of the thickness meter.

Description

[0001] The patent application for the present invention is a divisional application of the Chinese invention patent application with the application number 201410640385.8 and the filing date of November 13, 2014. The invention title of the original application is "A Control Method and Control System for the Thickness of a Rolled Plate". technical field

[0002] The invention relates to a steel strip production equipment, in particular to a control system for rolling plate thickness. Background technique

[0003] When the existing reversible rolling mill is cold-rolled to produce steel strips, in the first pass of production, there is a thickness gauge before and after the rolling mill. The steel strip enters the rolling line, and the crew starts the first pass of rolling. During the process, when the thickness of the raw material steel strip fluctuates, it is easy to cause abnormal accidents such as broken strips and flying plates, which greatly increase the production cost ...

Examples

Embodiment Construction

[0015] Such as figure 1 As shown, the rolling mill includes an uncoiler 101 and its pressure roller 102, telescopic guide plate 103, leveler 104, entrance tension roller 105, CPC 106, wedge 107, two back rollers 108, two worker rollers 109, two Push up the hydraulic cylinder 110, the exit tension roller 111 and its pressure roller 112. From the same direction gradually away from the unwinding machine 101, telescopic guide plate 103, leveler 104, CPC106, two work rolls 109, outlet tension roll 111 and pressure roll 112 thereof are arranged successively, and entrance tension roll 105 is located at work roll 109 and Between unwinding machines 101. Two working rollers 109 are arranged parallel to each other, and there is a working gap between them. A backing roller 108 is respectively arranged on the outside of the two working rollers 109. Wedges 107 are arranged on the backing roller 108 positioned at the top, and two Push up the hydraulic cylinder 110. The uncoiler 101 set is...

[0001] The patent application for the present invention is a divisional application of the Chinese invention patent application with the application number 201410640385.8 and the filing date of November 13, 2014. The invention title of the original application is "A Control Method and Control System for the Thickness of a Rolled Plate". technical field

[0002] The invention relates to a steel strip production equipment, in particular to a control system for rolling plate thickness. Background technique

[0003] When the existing reversible rolling mill is cold-rolled to produce steel strips, in the first pass of production, there is a thickness gauge before and after the rolling mill. The steel strip enters the rolling line, and the crew starts the first pass of rolling. During the process, when the thickness of the raw material steel strip fluctuates, it is easy to cause abnormal accidents such as broken strips and flying plates, which greatly increase the production cost ...

Examples

Embodiment Construction

[0015] Such as figure 1 As shown, the rolling mill includes an uncoiler 101 and its pressure roller 102, telescopic guide plate 103, leveler 104, entrance tension roller 105, CPC 106, wedge 107, two back rollers 108, two worker rollers 109, two Push up the hydraulic cylinder 110, the exit tension roller 111 and its pressure roller 112. From the same direction gradually away from the unwinding machine 101, telescopic guide plate 103, leveler 104, CPC106, two work rolls 109, outlet tension roll 111 and pressure roll 112 thereof are arranged successively, and entrance tension roll 105 is located at work roll 109 and Between unwinding machines 101. Two working rollers 109 are arranged parallel to each other, and there is a working gap between them. A backing roller 108 is respectively arranged on the outside of the two working rollers 109. Wedges 107 are arranged on the backing roller 108 positioned at the top, and two Push up the hydraulic cylinder 110. The uncoiler 101 set is...

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