Method and apparatus for rolling strip weld

A strip steel weld seam and rolling force technology, which is applied in the field of strip steel weld seam rolling, can solve problems such as broken strip and weld seam being rolled off

Active Publication Date: 2017-01-04
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for rolling a weld seam of strip steel, which is used to solve the problem in the prior art that when the material tracking system locates the weld seam incorrectly, the Being rolled off, there is a technical problem of broken strip

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  • Method and apparatus for rolling strip weld
  • Method and apparatus for rolling strip weld

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Embodiment 1

[0052] This embodiment provides a method for rolling strip welds, which is applied in the scene where the MTR system mistakenly believes that the holes on the strip are the punched holes of the welds, resulting in incorrect positioning of the strip welds, such as figure 1 As shown, the method includes the following steps:

[0053] Step 110, when the strip weld passes through the tempering machine, control the elongation control in the wet tempering mode to be off.

[0054] In this step, the wet leveling mode is to use leveling liquid for lubrication in the tempering machine frame, and the strip rolling deformation is small, and the goal to be controlled is to ensure constant elongation by adjusting the rolling force.

[0055] When the material tracking system detects that there are two punch holes on a section of strip steel, it adjusts the skin pass machine to the state of passing the weld seam, and sends an alarm prompt to the staff. When describing the skin pass machine, t...

Embodiment 2

[0069] Corresponding to Embodiment 1, this embodiment also provides a device for rolling strip welds, such as figure 2 As shown, the device includes: a first control unit 21, a second control unit 22, a third control unit 23 and a fourth control unit 24; wherein,

[0070] When the strip weld passes through the tempering machine, the first control unit 21 is used to control the elongation control in the wet leveling mode to be closed; specifically, the wet leveling mode is used for lubrication in the tempering machine frame Tempering liquid, strip rolling deformation is small, the goal of control is to ensure constant elongation by adjusting rolling force. When the material tracking system detects that there are two punch holes on a section of strip steel, it adjusts the skin pass machine to the state of passing the weld seam, and sends an alarm prompt to the staff. When describing the skin leveling machine, the staff clicks the weld seam button once through the man-machine i...

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Abstract

The present invention provides a method and apparatus for rolling a strip weld. The method includes controlling the elongation in the wet flat mode to a closed state when the strip weld passes the leveling machine; controlling the rolling speed of the leveling machine at 60-100 m / min; controlling the rolling force of the first frame of the leveling machine to be 2 to 2.5MN, and the rolling force of the second frame to 1.8 to 2MN; controlling the inlet tension, the intermediate tension and the outlet tension of the leveling machine to 80% of the preset value; so that when the material tracking system detects that there are two punches on the strip, the leveling machine is over-welded, the strip weld is safely welded to avoid breaking; after the weld is rolled, the leveling machine is adjusted to the normal rolling state, and the strip is subjected to normal rolling. Thus, when it is not necessary to reduce the speed of a furnace area, the strip weld is rolled at high speed, and stability in operation of the furnace area is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and in particular relates to a method and a device for rolling strip welds. Background technique [0002] In the field of iron and steel smelting technology, the tempering process of the continuous annealing unit is a rolling process with a small deformation rate for the recrystallized and annealed cold-rolled strip. [0003] In the stable production process, parameters such as high speed, tension and rolling force of the stand in the smoothing area cannot pass through the tempering machine smoothly for the weld, so the weld must be slowed down and rolled down when passing through the tempering machine area. The method of force control and tension reduction requires that the material tracking system (MTR, Material Tracking) system must control the tracking error of the weld within 10CM. However, holes are likely to exist at the head and tail of the steel coil, and the equipment w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/05
CPCB21D1/05
Inventor 刘醒王晓广周玉锋王喆肖激杨
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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