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Micro-tracking method and system of rolled pieces in the process of rolling periodic variable-thickness strips

A strip rolling and rolling process technology, which is applied in the field of micro-tracking method and system of rolling stock in the rolling process of cyclically variable thickness strip, can solve the problems of inability to meet the accuracy requirements of tracking and the like

Active Publication Date: 2011-04-27
SHENYANG DONGBAO HAIXING METAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing position tracking technology cannot meet the accuracy requirements of the position tracking of the rolled piece in the periodical variable thickness strip rolling process, the present invention provides a method that can meet the requirements of the rolling piece position tracking accuracy during the periodical variable thickness strip rolling process. The micro-tracking method and system of the rolling piece in the periodical variable thickness strip rolling process with the position tracking accuracy requirement

Method used

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  • Micro-tracking method and system of rolled pieces in the process of rolling periodic variable-thickness strips
  • Micro-tracking method and system of rolled pieces in the process of rolling periodic variable-thickness strips

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Embodiment 1

[0117] The relevant parameters of the system of the present invention are as follows:

[0118] A 650mm four-high reversing rolling mill is adopted, and the distance between the entrance thickness gauge and the exit thickness gauge and the center line of the rolling mill is L d =1000mm, the two thickness gauges are X-ray thickness gauges, the measuring range is 0.1-5.0mm, the static accuracy 2σ=±0.10%, the repeatability is ±0.05%, the long-term stability is ±0.05% / 8h; the hydraulic cylinder The pressure is 22MPa, the response frequency of the hydraulic cylinder is 22Hz, and the step response time of 0.1mm is 31ms; the built-in displacement sensor of the hydraulic cylinder has a range of 100mm and a resolution of 0.001mm.

[0119] Incoming material status: Uniform thickness, steel type is IF, width 500mm, thickness 1.3mm.

[0120] Product size: the thickness of the thick zone is 1.2mm and the length is 300mm; the length of the transition zone is 50mm; the thickness of the thin ...

Embodiment 2

[0125] The relevant parameters of the system of the present invention are as follows:

[0126] A 650mm four-high reversing rolling mill is adopted, and the distance between the entrance thickness gauge and the exit thickness gauge and the center line of the rolling mill is L d =1000mm, the two thickness gauges are X-ray thickness gauges, the measuring range is 0.1-5.0mm, the static accuracy 2σ=±0.10%, the repeatability is ±0.05%, the long-term stability is ±0.05% / 8h; the hydraulic cylinder The pressure is 22MPa, the response frequency of the hydraulic cylinder is 22Hz, and the step response time of 0.1mm is 31ms; the built-in displacement sensor of the hydraulic cylinder has a range of 100mm and a resolution of 0.001mm.

[0127] Incoming material status: uniform thickness, steel type is ST12, width 450mm, thickness 2mm;

[0128] Product size: thick zone thickness 1.5mm, length 200mm; transition zone length 100mm; thin zone thickness 0.8mm, length 200mm;

[0129] Rolling requ...

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Abstract

A micro-tracking method and a system of rolled pieces in the process of rolling periodic variable-thickness strips belong to the technical field of rolling. The method comprises the following steps: dividing thickness zones, thinness zones and transition zones on the rolled pieces of the periodic variable-thickness strips, setting whether the incoming materials are uniform-thickness rolled piecesor periodic variable-thickness rolled pieces, determining the starting point of rolling, micro-tracking the rolling length in the process of rolling and carrying out tracking correction on the periodic variable-thickness rolled pieces. The system comprises a rolling mill; coiling machines are arranged at both sides of the rolling mill respectively; length-measuring rollers are arranged between the coiling machines and the rolling mill; thickness gauges are arranged at both sides of the rolling mill respectively; coil diameter gauges are arranged on the coiling machines; a rolling force sensorand a hydraulic cylinder are arranged on the rolling mill; tensiometers are arranged below the length-measuring rollers and pulse coders are arranged on the length-measuring rollers; the thickness gauge, the coil diameter gauge, the rolling force sensor, a displacement sensor of the hydraulic cylinder, the tensiometer and the pulse coder are respectively connected with a computer control system.

Description

Technical field: [0001] The invention belongs to the technical field of rolling, and in particular relates to a micro-tracking method and system for a rolled piece in the rolling process of periodically variable-thickness strips. Background technique: [0002] In the process of rolling periodic variable-thickness strips, two points need to be ensured: 1. The thickness control accuracy of the thick zone, thin zone and transition zone of the strip is high enough; 2. The thick zone, thin zone and transition zone of the strip The relative position of the zone is accurate, so that it can be cut into a differential thick plate with precise shape and size in the subsequent processing procedure. A key issue to realize these two points is to track the position of the rolled piece with high precision during the rolling process; however, the existing position tracking technology cannot meet the requirements of the position tracking of the rolled piece during the periodical variable-thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/26G05B19/04G05D5/03
Inventor 吴志强刘相华张殿华胡贤磊孙涛矫志杰支颖李旭孙杰
Owner SHENYANG DONGBAO HAIXING METAL MATERIAL TECH
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