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A detection method for oxide film thickness of high-strength steel galvanizing production line

A technology of high-strength steel and oxide film, which is applied in the field of steel rolling, can solve the problems of measuring the thickness of oxide film on the surface of unstrip steel, and achieves the effects of simple method, easy operation and low cost.

Active Publication Date: 2022-05-17
SHOUGANG CORPORATION
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  • Application Information

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Problems solved by technology

[0003] The invention provides a method for detecting the oxide film thickness of a high-strength steel galvanizing production line, which solves the problem in the prior art that there is no effective means to measure the oxide film thickness on the strip steel surface at the exit position of the pre-oxidation bin

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  • A detection method for oxide film thickness of high-strength steel galvanizing production line
  • A detection method for oxide film thickness of high-strength steel galvanizing production line
  • A detection method for oxide film thickness of high-strength steel galvanizing production line

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[0030] The present invention will be described in detail below in conjunction with specific embodiments and examples, and the advantages and various effects of the present invention will be presented more clearly. Those skilled in the art should understand that these specific implementations and examples are used to illustrate the present invention, not to limit the present invention.

[0031] Throughout the specification, unless otherwise specified, terms used herein should be understood as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, this specification shall take precedence.

[0032] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0033] see ...

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Abstract

A method for detecting the thickness of oxide film on a high-strength steel galvanizing production line, using the law of the influence of oxide film growth on the change of emissivity on the surface of the strip, and reflecting the change of the thickness of the oxide film through the temperature measurement value; using the effect of the oxide film on the surface of the strip on radiation Based on the principle of wave interference, the thickness value of the oxide film on the surface of the strip is estimated by measuring the wave path difference corresponding to the extreme point of the temperature value. In this way, the thickness of the oxide film at the outlet of the pre-oxidation chamber can be measured to ensure the surface quality of the high-strength steel. This method is simple, easy to operate, and low in cost.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a method for detecting the oxide film thickness of a high-strength steel galvanizing production line. Background technique [0002] In recent years, major advanced iron and steel enterprises have gradually built hot-dip galvanizing units specially used in the production of high-strength steel. Due to the high content of Si, Mn, Cr and other alloying elements in high-strength steel, selective oxidation is prone to occur, resulting in a decrease in the wettability of the strip surface and the problem of missing plating. In order to deal with this problem, the heating section of the high-strength steel production line is often equipped with a pre-oxidation chamber. During the production process, air or water vapor is introduced into the pre-oxidation chamber to achieve an oxidizing atmosphere inside the pre-oxidation chamber, thereby realizing the strip surface. I...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/08
CPCG01B21/085
Inventor 李研蒋光锐任新意吴士才贾杰周欢
Owner SHOUGANG CORPORATION