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Rolling control system and method of 3950mm hot-rolling mill

A control system and technology of hot rolling mill, applied in the direction of rolling force/roll gap control, etc., can solve the problems of low rolling precision of 3950mm hot rolling mill, achieve improved rolling precision, long service life and guaranteed rolling precision Effect

Inactive Publication Date: 2019-01-01
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem of low rolling precision of 3950mm hot rolling mill in the prior art, and the present invention provides a rolling control system and method of 3950mm hot rolling mill

Method used

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  • Rolling control system and method of 3950mm hot-rolling mill

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specific Embodiment approach 1

[0027] Specific implementation mode one: see figure 1 Describe this embodiment, the 3950mm hot rolling mill rolling control system described in this embodiment includes a differential amplifier 1, a controller 2, a servo amplifier 3, an electro-hydraulic servo valve 4, a hydraulic cylinder 5, a pressure sensor 6, a position sensor 7 and switch K;

[0028] The constant pressure signal input terminal of the differential amplifier 1 is used to receive the pressure setting signal Up;

[0029] The positioning signal input end of the differential amplifier 1 is used to receive the roll gap setting signal Uz;

[0030] The feedback command signal input terminal of the differential amplifier 1 is connected to the fixed terminal of the switch K, and the selection terminal of the switch K is connected to the voltage signal output terminal of the pressure sensor 6 or the voltage signal output terminal of the position sensor 7;

[0031] The data signal output end of the differential ampl...

specific Embodiment approach 2

[0036] Embodiment 2: The difference between this embodiment and the rolling control system of the 3950 mm hot rolling mill described in Embodiment 1 is that the pressure sensor 6 is a HAD 3840-A-350-124 pressure sensor.

specific Embodiment approach 3

[0037] Embodiment 3: The difference between this embodiment and the rolling control system of the 3950mm hot rolling mill described in Embodiment 1 is that the position sensor 7 is an MD50 position sensor.

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Abstract

The invention discloses a rolling control system and method of a 3950mm hot-rolling mill, relates to the field of automatic control of mill opening enlarging and thickness and solves the problem of low rolling precision of the existing 3950mm hot-rolling mill. A feedback command signal input end of a differential amplifier is connected with a fixed end of a switch K; a free end of the switch K isconnected with a voltage signal output end of a pressure sensor or a voltage signal output end of a position sensor; a data signal output end of the differential amplifier is connected with a data signal input end of a controller; a control signal output end of the controller is connected with a control signal input end of a servo amplifier; control signals output by the servo amplifier are used to control the opening degree of an electro-hydraulic servo valve so as to control the flow and pressure of an oil source flowing into a hydraulic oil cylinder through the electro-hydraulic servo valve; the pressure sensor is used to detect the push-down force of the hydraulic oil cylinder and output pressure signals; the position sensor is used to detect the displacement of the hydraulic oil cylinder and output displacement signals. The rolling control system and method are used for machining of metals.

Description

technical field [0001] The invention relates to the field of automatic control of increasing opening and thickness of a rolling mill. Background technique [0002] In the prior art, the 3950mm hot rolling mill has limitations in function. The hot roughing mill cannot complete the rolling process of the cold work plate, and the hot roughing mill cannot meet the production requirements for such products at home and abroad. [0003] Therefore, it is decided that the 3950mm hot rolling mill must be developed to increase the opening and thickness automatic control, so as to broaden the production range of the rolling mill and improve the rolling precision. Contents of the invention [0004] The invention aims to solve the problem of low rolling precision of the 3950mm hot rolling mill in the prior art, and provides a rolling control system and method of the 3950mm hot rolling mill. [0005] 3950mm hot rolling mill rolling control system, including differential amplifier, contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/62
CPCB21B37/62
Inventor 李琦郭剑锋崔秀兰曹宇轩包乃印苏思齐王大伟耿广超
Owner NORTHEAST LIGHT ALLOY CO LTD