Strip penetrating control method and device

A control method and strip threading technology, which is applied in the direction of rolling force/roll gap control, etc., can solve the problems of reducing production line efficiency, improper operation, and work roll damage

Active Publication Date: 2020-03-27
BEIJING SHOUGANG COLD ROLLED SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a control method and device for threading and starting, which is used to solve the problems in the belt threading process in the prior art when strip steel of thick and narrow specifications is threaded and started. There are technical problems such as broken belts and improper operation during start-up, which lead to damage to the work rolls, thereby reducing the working efficiency of the production line

Method used

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  • Strip penetrating control method and device
  • Strip penetrating control method and device

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Experimental program
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Embodiment 1

[0036] This embodiment provides a control method for belt-starting, such as figure 1 As shown, the methods include:

[0037] S110, before threading the strip, smoothing the strip head of the strip;

[0038] In order to avoid the belt threading from being affected by the lifting of the belt head, use a leveling tool to smooth the belt head of the strip steel before threading the strip steel; make the belt head meet the following leveling parameters: ~7°, no major deformation within 2-4 meters of the leading edge and relatively flat.

[0039] S112, controlling the pressure rollers, strip threading guide plates and strip clamping components of each finishing stand to be in a lifted state, and controlling the roll gaps of each finishing stand to be in an open state;

[0040] Before threading, control the pressure rollers, threading guide plates and strip clamping parts of each finishing stand to be in a lifted state, and control the roll gaps of each finishing stand to be in an ...

Embodiment 2

[0054] This embodiment also provides a control device for threading and starting the car, such as figure 2 As shown, the device includes: a processing unit 21, a first control unit 22 and a second control unit 23; wherein,

[0055] In order to avoid the tape head being tilted and affecting the threading, before the strip is threaded, the processing unit 21 is used to use a leveling tool to smooth the strip head of the strip; so that the tape head meets the following leveling parameters: the length of the tape head warping is 10-20mm , The tilt angle is 2-7°, and there is no large deformation within 2-4 meters of the head, which is relatively smooth.

[0056] Before threading, the first control unit 22 is used to control the pressure rollers, threading guide plates and strip clamping parts of each finishing stand to be in a lifted state, and to control the roll gaps of each finishing stand to be in an open state; Place it at the entrance of the first finishing stand and start...

Embodiment 3

[0068] In actual application, when the strip steel with a thickness of 5mm, a width of 1007mm, and a yield strength of 552Mpa is threaded and started, the specific implementation is as follows:

[0069] In order to prevent the tape head from being tilted and affecting the threading of the strip, use a leveling tool to smooth the strip head before threading the strip steel; Large deformation is smoother.

[0070] Before threading, control the pressure rollers, threading guide plates and strip clamping parts of each finishing stand to be in a lifted state, and control the roll gaps of each finishing stand to be in an open state; place the strip head on the first finishing stand The entrance begins to wear the belt. During the threading process, it is necessary to track the threading condition of the tape head so that the threading can be adjusted in time.

[0071] After the strip head comes out of the exit of the last finishing stand, it enters the coiler mandrel and begins to...

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Abstract

An embodiment of the invention provides a strip penetrating starting control method and device. The method includes the steps that before penetration of a steel strip, a strip head of the strip steelis smoothened; pressure rollers, strip penetrating guide plates and strip steel clamping components of all finishing rolling racks are controlled to be in the lifted state, and roll gaps of all finishing rolling racks are controlled to be in the opened state; the exit tension of the last finishing rolling rack is controlled to be greater than 20 KN; when the finishing rolling racks are started, the pressing rolls, the strip penetrating guide plates and the strip steel clamping components of all finishing rolling racks are controlled to be in the rolling state, and the minimum rolling force ofroll gaps of pressing-down rollers of all finishing rolling racks are controlled; and the work roller bending degree of the last finishing rolling rack is controlled to be 20% to 40%, and the middle roller bending degree is controlled to be 30% to 50%; and the channeling roll direction is controlled to be maximum in the negative direction.

Description

technical field [0001] The invention belongs to the technical field of continuous cold rolling, and in particular relates to a control method and device for strip threading and start-up. Background technique [0002] In today's increasingly fierce competition in the cold-rolled strip industry market, methods to reduce costs, increase efficiency, and improve work efficiency have become more important. [0003] At present, the thick and narrow specification high-strength strip of the continuous rolling mill is already a major problem for the operators to face. During the strip threading process, there are often broken strips, and improper operation of the finishing stand after the start-up causes injuries. Problems such as rollers reduce the work efficiency of the production line. Contents of the invention [0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a control method and device for threading and starting, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/58
CPCB21B37/58
Inventor 陈湘宁陈甚超陈彦旭宋浩源曾卫仔于海龙王斌马凯史风龙胡佳新王佳雨
Owner BEIJING SHOUGANG COLD ROLLED SHEET
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