Method and device for reducing use amount of sleeves

A technology of usage volume and sleeves, which is applied in rolling mill control devices, metal processing equipment, metal rolling, etc., can solve the problems of increased production costs and high sleeve usage

Active Publication Date: 2020-07-24
SHOUGANG JINGTANG IRON & STEEL CO LTD
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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 method and device for reducing the amount of sleeve usage, which is used to solve the problems in the prior art when producing thin-gauge strip steel in the cold-rolled acid continuous rolling production line. When using the empty roll mode to take up the waste roll, the sleeve usage is too high, which leads to the technical problem of increasing the production cost

Method used

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  • Method and device for reducing use amount of sleeves
  • Method and device for reducing use amount of sleeves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a method for reducing the amount of sleeve used, which is applied to the continuous acid rolling production line. The continuous acid rolling production line is arranged in sequence according to the running direction of the strip: pickling equipment, surface defect detector, trimming machines, weld detectors, loopers, rolling mills and coilers; such as figure 1 As shown, the methods include:

[0048] S110. Determine the starting position of the strip head of the current strip.

[0049] In practical application, through the analysis of production data and the accumulation of production experience, it is found that the defects of raw materials that do not meet the rolling requirements are mainly concentrated in the head and tail. Therefore, in this step, the starting position of the strip head of the current strip is determined.

[0050] Here, since the raw material coil is formed by welding together multiple pieces of steel strip, when determinin...

Embodiment 2

[0107] This embodiment provides a device for reducing the amount of sleeve used, which is applied to the continuous acid rolling production line. The continuous acid rolling production line is arranged in sequence according to the running direction of the strip: pickling equipment, surface defect detector, Edge trimmers, weld detectors, loopers, rolling mills and coilers; e.g. figure 2 As shown, the device includes: a determining unit 21, a first acquiring unit 22, a judging unit 23, a second acquiring unit 24 and a triggering unit 25; wherein, the determining unit 21 is used to determine the starting position of the tape head of the current strip;

[0108] The first acquiring unit 22 is configured to acquire the first distance between the starting position of the tape head and the weld seam detector and the distance between the starting position of the tape head and the weld seam detector after the starting position of the tape head passes the weld seam detector. a second di...

Embodiment 3

[0165] In practical application, when using the method provided in Example 1 to coil the steel strip on the acid tandem rolling production line of a certain steel plant, the sleeve usage is as shown in Table 1 and image 3 Shown:

[0166] Table 1

[0167] Effect comparison Before renovation (June and July) June july The number of sleeves consumed per month (pieces) 150 50 45

[0168] From Table 1 and image 3 It can be seen that the amount of sleeve usage is significantly reduced. image 3 middle, It is the number of sleeves used per month.

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Abstract

The invention provides a method for reducing the use amount of sleeves. The method includes the following steps that the strip head starting position of current strip steel is determined; the first distance between the strip head starting position and a welding joint detector and the second distance between the strip head starting position and an inlet of a rolling mill are acquired; whether the first distance is in the preset first range is judged, and meanwhile, whether the second distance is in the preset second range is judged; if the first distance is in the first range and the second distance is in the second range, the first defect detecting result of the head of the current strip steel is acquired; if the first defect detecting result determines that a defect exists, a first coiling signal is triggered, and a current mandrel of a coiling machine is controlled to coil the strip head of the current strip steel according to the first coiling signal; thus, before rolling of the current strip steel, whether the head of the current strip steel has the defect can be determined, if the head has the defect, the current mandrel of the coiling machine is used for performing coiling, the use amount of the sleeves is reduced, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of cold rolling, and in particular relates to a method and a device for reducing the usage of sleeves. Background technique [0002] When producing thin-gauge steel strips in the cold-rolled acid-rolling production line, sometimes the raw materials have defects such as pits, edge cracks, and folds. [0003] In order to avoid broken strips and roll damage caused by defective raw materials passing through the rolling mill, the empty coil mode with the roll gap open is usually selected, and the defective raw materials are rolled directly into the sleeve to form waste coils. But once the sleeve is used, it cannot be pulled out again, so it is inevitable to roll the sleeve into the waste roll in the empty roll mode. However, in actual production, the number of empty coils per month is between 120 and 200, resulting in excessive sleeve usage and affecting production costs. Contents of the invention [0004] Ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21C47/02
CPCB21B37/00B21C47/02
Inventor 柯于军
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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