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Hot rolling mill AGC system and rolling control method thereof

A control method and technology for hot rolling mills, which are applied in rolling mill control devices, rolling force/roll gap control, metal rolling, etc., and can solve the requirements that affect the constant pressure of equipment, poor control accuracy, and low sheet thickness control accuracy, etc. problems, to achieve the effect of high control accuracy and fast response speed

Inactive Publication Date: 2015-01-07
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor control accuracy and insensitive response of the AGC system of the hot rolling mill, which affect the requirement of constant pressure of the equipment, and low control precision of the plate thickness. The present invention provides a hot rolling mill AGC system and its rolling Control Method

Method used

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  • Hot rolling mill AGC system and rolling control method thereof
  • Hot rolling mill AGC system and rolling control method thereof

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine figure 1 Describe this embodiment, the AGC system of the hot rolling mill described in this embodiment, the model of the pressure sensor of the AGC system of the hot rolling mill is TIM0050302911201, and the pressure sensor is arranged in the oil cylinder of the AGC system of the hot rolling mill;

[0023] The pressure sensor is a TIM0050302911201 pressure sensor modified according to the set calibration parameters;

[0024] The pressure sensor is used to collect the pressure in the oil cylinder of the AGC system of the hot rolling mill, and feeds back to the hydraulic servo system of the AGC system of the hot rolling mill as a control parameter.

[0025] In this embodiment, the parameter calibration design, positioning control and constant pressure control are carried out again through sensor modification to realize the constant roll gap, constant pressure and differential adjustment functions of the rolling mill, so as to impr...

specific Embodiment approach 2

[0042] Embodiment 2: This embodiment is a further limitation of the hot rolling mill AGC system described in Embodiment 1. The hydraulic servo system of the hot rolling mill AGC system includes a signal processing module, a controller, a servo amplifier, an electro-hydraulic Servo valve, cylinder signal compensation module and switch;

[0043]The displacement feedback signal output end of the displacement sensor of the AGC system of the hot rolling mill is connected to one feedback signal input end of the switch, and the pressure feedback signal output end of the pressure sensor of the AGC system of the hot rolling mill is connected to the other feedback signal input end of the switch. The feedback signal output end of the switch is connected to the first feedback signal input end of the signal processing module; the roll gap control instruction signal output end of the pressing control system is connected to the second feedback signal input end of the signal processing module,...

specific Embodiment approach 3

[0053] Specific embodiment three: this embodiment is the rolling control method of the hot rolling mill AGC system described in specific embodiment one, through the switching of the switching switch, the rolling control method of the hot rolling mill AGC system includes pressure control method and roll gap control method,

[0054] When switching from the pressure control method to the roll gap control method, take the current roll gap as the initial value of the roll gap, and adjust the roll gap pressure until the target roll gap is reached; when switching from the roll gap control method to the pressure control method, use the current The pressure value is used as the initial pressure value, and the pressure is adjusted until the target pressure is reached;

[0055] Both the pressure control method and the roll gap control method adopt the given value of S-shape change for rolling control.

[0056] According to the function of this system is to control the roll gap (thicknes...

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Abstract

The invention provides a hot rolling mill AGC system and a rolling control method thereof, belongs to the field of hot rolling mill AGC control and aims at solving the problem that at present, the hot rolling mill AGC system is low in control accuracy, insensitive in reaction and low in plate thickness control accuracy and influences constant pressure of a device. The model of a pressure sensor of the hot rolling mill AGC system is TIM0050302911201, and the pressure sensor is arranged in the oil cylinder of the hot rolling mill AGC system. The pressure sensor is the TIM0050302911201 pressure sensor modified according to set calibration parameters and is used for acquiring pressure in the oil cylinder of the hot rolling mill AGC system and feeding the pressure serving as a control parameter back to a hydraulic servo system of the hot rolling mill AGC system. The hot rolling mill AGC system is used in a hot rolling mill.

Description

technical field [0001] The invention belongs to the field of AGC control of hot rolling mills. Background technique [0002] With the quickening of the pace of new aluminum alloy products, the rapid improvement of the grade of developed varieties, the implementation of the strategy of variety innovation. The successful transformation of the AGC hydraulic system of the hot rolling mill has improved the control accuracy, response speed, etc., which determine the final performance of the plate and the position of the plate in the market. It determines the development speed of high value-added products. At present, the supply of spare parts for the pressure sensor of the AGC system of the hot rolling mill cannot be guaranteed, and the accuracy of controlling the thickness of the rolled plate is poor. The pressure sensor of the model has poor control accuracy and insensitive response, which affects the constant pressure requirements of the equipment, and the plate thickness cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/16B21B37/48B21B37/58
CPCB21B37/48B21B37/58
Inventor 徐忱黄岩超肖国福范玲单良唐雨桐徐贺年王春晖
Owner NORTHEAST LIGHT ALLOY CO LTD
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