A method and device for controlling tension fluctuation of a galvanized wire weld seam finishing machine

A technology of skin pass mill and galvanizing line, which is applied in the direction of rolling mill control device, tension/pressure control, rolling force/roll gap control, etc. It can solve problems such as twill defect and tension fluctuation, so as to reduce cutting loss and ensure finished product rate, reducing the effect of tension fluctuations

Active Publication Date: 2021-09-24
BEIJING SHOUGANG COLD ROLLED SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for controlling the tension fluctuation of the galvanized wire welding seam passing the skin pass machine, which solves the large fluctuation of the tension caused by the drastic change of the reduction amount of the skin pass machine in the prior art , the technical problem that causes the twill defect of the strip weld

Method used

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  • A method and device for controlling tension fluctuation of a galvanized wire weld seam finishing machine
  • A method and device for controlling tension fluctuation of a galvanized wire weld seam finishing machine
  • A method and device for controlling tension fluctuation of a galvanized wire weld seam finishing machine

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Embodiment 1

[0050] figure 1 It is a schematic flowchart of a method for controlling tension fluctuation of a galvanized wire weld pass through a skin pass machine in an embodiment of the present invention. Such as figure 1 As shown, the embodiment of the present invention provides a method for controlling tension fluctuation of a galvanized wire weld passing through a skin pass machine, the method comprising:

[0051] Step 110: Before the weld seam of the first strip reaches the skin pass mill, the skin pass mill stops elongation control, and controls the set rolling force of the first strip to decrease from locked rolling force to reduced pressure rolling force;

[0052] Specifically, before the first strip weld arrives at the skin pass mill, lock the rolling force and stop the elongation control at the same time, start the decompression before the weld seam reaches the skin pass mill, and reduce the set rolling force to the decompression rolling force.

[0053] Step 120: Obtain a fi...

Embodiment 2

[0070] Based on the same inventive concept as the control method for the tension fluctuation of a galvanized wire weld pass through the skin pass machine in the foregoing embodiment, the present invention also provides a control device for the tension fluctuation of the galvanized line weld pass through the pass pass machine, such as figure 2 As shown, the device includes:

[0071] The first processing unit 11, before the weld seam of the first steel strip reaches the skin pass mill, the skin pass machine stops the elongation control, and the first processing unit 11 controls the set rolling force of the first strip steel from The locked rolling force is reduced to the reduced rolling force;

[0072] The first obtaining unit 12, the first obtaining unit 12 obtains a first decompression rate, and the first decompression rate is the decompression rate before the first strip weld reaches the skin pass mill;

[0073] The second obtaining unit 13, the second obtaining unit 13 obt...

Embodiment 3

[0092] Based on the same inventive idea as the control method for the tension fluctuation of the galvanized wire weld passing through the skin pass machine in the foregoing embodiments, the present invention also provides a control device for the tension fluctuation of the galvanized wire weld passing through the skin pass machine, on which A computer program is stored, and when the program is executed by the processor, the steps of any one of the above-mentioned methods for controlling the tension fluctuation of the galvanized wire weld passing through the skin pass machine are realized.

[0093] Among them, in image 3 In, bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 will include one or more processors represented by processor 302 and various types of memory represented by memory 304 circuits linked together. The bus 300 may also link together various other circuits, such as peripherals, voltage regul...

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PUM

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Abstract

The invention provides a method for controlling the tension fluctuation of a galvanized wire weld passing through a skin pass machine, comprising: before the first strip weld reaches the skin pass machine, the skin pass machine stops elongation control and controls its setting The rolling force is reduced to the decompression rolling force; the first decompression rate is obtained, and the first decompression rate is the decompression rate before the first strip weld seam reaches the skin pass mill; the second decompression rate is obtained, so The second decompression rate is the same as the first decompression rate; after the first strip weld passes through the skin pass mill, the set rolling force is controlled to increase to the second decompression rate according to the second decompression rate. The set rolling force for the strip. It solves the technical problem in the prior art that the tension of the skin-pass machine fluctuates greatly due to the drastic change of the reduction amount during the decompression, and the twill defect of the weld seam of the strip steel is caused. Through the control algorithm and program, the tension fluctuation when the galvanized wire weld passes through the skin pass machine is reduced, and then the mechanical properties of the strip are improved, the cutting loss is reduced, and the technical effect of the yield is guaranteed.

Description

technical field [0001] The invention relates to the technical field of cold-rolled strip rolling, in particular to a method and a device for controlling tension fluctuations of a galvanized wire weld seam pass finish machine. Background technique [0002] The high value-added production line of cold rolling and galvanizing is usually equipped with a skin pass machine, which is used to flatten the surface of the strip steel, and at the same time control the shape of the strip, improve the mechanical properties of the strip steel, and transfer the roughness to make the strip steel after skin skinning easier. Anti-rust treatment. Since the front and rear strips are welded, the thickness of the weld is usually higher than the thickness of the substrate. When the weld is passed through the finishing machine, the method of decompression over the weld will be adopted. In this way, when the pressure is reduced, the tension fluctuates greatly due to the drastic change of the reducti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D1/02B21B37/46B21B37/48B21B37/56B21B37/58B21B37/00
CPCB21B37/00B21B37/46B21B37/48B21B37/56B21B37/58B21B2265/10B21B2265/12B21D1/02
Inventor 崔伦凯郭俊明张军吴亮任金鹏李凤慧张振勇李文晖
Owner BEIJING SHOUGANG COLD ROLLED SHEET
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