Method for evaluating temperature uniformity of hot rolled strip steel in width direction

A technology of hot-rolled strip steel and uniformity, applied in the field of hot-rolled strip steel, which can solve the problems of heavy workload and low objectivity

Active Publication Date: 2021-09-10
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of large workload and low objectivity in calculating the temperature drop value and the width of the temperature drop area in the prior art, the present invention proposes a hot-rolled strip steel The method of evaluating temperature uniformity in the width direction, firstly add a temperature measuring line and generate the temperature data of the temperatur

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  • Method for evaluating temperature uniformity of hot rolled strip steel in width direction
  • Method for evaluating temperature uniformity of hot rolled strip steel in width direction
  • Method for evaluating temperature uniformity of hot rolled strip steel in width direction

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Embodiment 1

[0036] A method for evaluating temperature uniformity in the width direction of hot-rolled steel strip in this embodiment, such as image 3 shown, including the following steps:

[0037] Step 1. Add a temperature measuring line and generate the temperature data of the temperature measuring line;

[0038] Step 2. Data processing to determine the position of the edge of the strip: the conduction rate of heat conduction in the air is obviously different from that in the strip, so there will be an obvious turning point in the temperature data value derived from line A. The temperature at the previous position is subtracted from the temperature at the previous position to determine the change of temperature, and the point with the largest temperature turning point is the edge position of the strip;

[0039] Step 3, the relative coordinates are converted into the absolute position points of the strip width;

[0040] Step 4. Determine the average temperature T in the width directio...

Embodiment 2

[0049] A method for evaluating temperature uniformity in the width direction of hot-rolled strip steel in this embodiment, the basic structure is the same as that in Embodiment 1, the difference and improvement are: it also includes calculating the edge temperature drop on the operating side and the transmission side of the hot-rolled strip steel value, the operating side temperature drop is: △T 操作 =T ave -T a , the transmission side temperature drop is: △T 传动 =T ave -T b , to simply and objectively calculate the temperature drop values ​​of the operating side and the driving side in the width direction of the hot-rolled strip, and finally quantitatively evaluate the temperature uniformity of the hot-rolled strip.

[0050] In this embodiment, taking the 8×1625mm hot-rolled steel strip produced by a steel factory as an example, the temperature data of the hot-rolled strip after laminar cooling is measured, and the calculated temperature data is Figure 4 shown. Depend on ...

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Abstract

The invention discloses a method for evaluating the temperature uniformity of hot-rolled strip steel in the width direction, and relates to the technical field of hot-rolled strip steel. The invention discloses a method for evaluating the temperature uniformity of hot rolled strip steel in the width direction. Comprising the following steps: adding a temperature measuring line and generating temperature data of the temperature measuring line; processing the data to determine the edge position point of the strip steel; converting the relative coordinates into strip steel width absolute position points; and finally, determining the average temperature value of the strip steel in the width direction in an integral mode, wherein the point corresponding to the temperature data, exported through analysis software, of the temperature measuring line A is the relative position point B of the shooting picture space, and the position point without the actual width of the strip steel needs to be converted. The method further comprises the step of calculating the edge temperature drop values of the operation side and the transmission side of the hot-rolled strip steel, so that the temperature drop values of the operation side and the transmission side of the hot-rolled strip steel in the width direction are simply, conveniently and objectively calculated; and finally, quantitatively evaluating the temperature uniformity of the hot-rolled strip steel.

Description

technical field [0001] The invention relates to the technical field of hot-rolled steel strips, in particular to a method for evaluating temperature uniformity in the width direction of hot-rolled steel strips. Background technique [0002] In the production process of hot-rolled strip steel, the temperature uniformity in the width direction has always been a key factor affecting the uniformity of product performance. The temperature drop on the operation side and transmission side of the strip is obviously faster than that in the middle position, resulting in uneven temperature in the width direction, which exists objectively. The technicians have carried out a lot of work on the cooling method, but it is only to alleviate this problem. However, how to quantitatively evaluate the temperature uniformity in the width direction of hot-rolled strip steel is a problem that technicians have to face. [0003] The infrared thermal imager uses an infrared detector and an optical im...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06F119/08
CPCG06F30/20G06Q10/0639G06F2119/08Y02P90/30
Inventor 孙照阳胡学文王承剑余宣洵杨森吴志文赵虎汪飞
Owner MAANSHAN IRON & STEEL CO LTD
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