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Method for eliminating head indentation of hot-rolled strip steel

A hot-rolled strip and head technology, which is applied in the field of automatic control in the metallurgical industry, can solve problems such as deep depth and affect product quality, and achieve the effect of deep elimination.

Active Publication Date: 2016-06-15
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are always indentation defects on the head of hot-rolled strip steel, and the depth is relatively deep, reaching a depth of about 1.2mm, which seriously affects product quality

Method used

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  • Method for eliminating head indentation of hot-rolled strip steel

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Embodiment Construction

[0011] Set a metal heat detection device and a metal cold detection device in front of the pinch roller, the metal cold detection device is located in front of the metal heat detection device, and the metal cold detection device and the metal heat detection device are connected at the same time, and the tracking control of the strip is started , according to the speed of the strip, calculate the time when the head of the strip reaches the pinch roller and the help roll, so as to establish the head tracking. When the strip steel head arrives at the No. 1 coiling aid roll, the load of the coil aiding roll is turned on, and the strip head is tracked and corrected, and it must be corrected at the No. 2 and No. 3 coiling aid rolls. When the strip steel head arrives at No. 1, No. 2 and No. 3 rolls again, it will no longer be corrected. The formula for calculating the head tracking distance is as follows:

[0012] S=V*t+Sx; the unit is mm;

[0013] S: head tracking distance; V: str...

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Abstract

The invention discloses a method for eliminating head indentation of hot-rolled strip steel, and belongs to the control technology of a metallurgical hot-rolled strip steel coiling machine. The method is characterized in that head tracking computation is carried out in a primary computer; load correction is carried out for the first time after the head of the strip steel reaches a pinch roll, and load correction is carried out for the second time after the head of the strip steel reaches a wrapper roll; setting according to steel grade and specification is carried out in a secondary computer which is used for sending a hardness group code and a thickness code to the primary computer before the coiling machine establishes tracking; and the primary computer is used for automatically regulating a tripping-off value of the wrapper roll according to different hardness and different thicknesses and carrying out preset control on pressure of the wrapper roll. The method can be used for almost eliminating head indentation defects of the strip steel, so that good benefits are obtained.

Description

technical field [0001] The invention belongs to the field of automatic control in the metallurgical industry, and in particular relates to the control technology of a coiler for hot-rolled strip steel. Background technique [0002] In the existing hot-rolled strip coiler control system, the steel type and specification are not distinguished when setting the jump-off value of the auxiliary roll. Through the tracking of the site and the analysis of a large amount of data, the indentation depths produced by different steel types and specifications are very different. There are always indentation defects in the head of hot strip steel, and the depth is relatively deep, reaching about 1.2mm, which seriously affects product quality. Contents of the invention [0003] The purpose of the invention is to improve product quality. [0004] The technical solution of the present invention: a method for eliminating the indentation on the head of the hot-rolled steel strip. According t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/72
CPCB21B37/72
Inventor 马峰朴永红
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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