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Method for detecting surface defects of strip steel

A defect and strip technology, applied in the field of strip surface defect detection, can solve problems such as inaccurate detection results, and achieve the effects of solving inaccurate detection results, improving accuracy, and improving test results.

Inactive Publication Date: 2018-08-24
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a detection method for steel strip surface defects, which is used to solve the technical problem of inaccurate detection results existing in the prior art

Method used

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  • Method for detecting surface defects of strip steel
  • Method for detecting surface defects of strip steel
  • Method for detecting surface defects of strip steel

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Embodiment Construction

[0018] An embodiment of the present invention provides a detection method for steel strip surface defects, which is used to solve the technical problem of inaccurate detection results existing in the prior art.

[0019] In order to solve the technical problems in the above-mentioned prior art, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0020] Calibrate the parameters of the camera, detection brightness and gray value to obtain the calibration parameters; take pictures of the strip to be detected according to the calibration parameters to obtain a picture of the strip; test the effect of the detection software based on the pre-collected pictures containing defects ; adjust the parameters of the detection software according to the result of the effect test to obtain adjusted parameters; detect the strip steel picture based on the adjusted parameters.

[0021] In the above-mentioned method in the present inv...

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Abstract

The invention discloses a method for detecting surface defects of a strip steel, the method is as follows: calibrating a parameter, a detection brightness and a gray value of a camera to obtain a calibration parameter; and photographing a strip steel to be detected according to the calibration parameter to obtain a strip steel picture; performing an effect test on detection software based on a pre-collected picture containing the defects; performing parameter adjustment on the detection software according to the results of the effect test to obtain an adjusted parameter; and testing the stripsteel picture based on the adjusted parameter. The method solves the technical problem that the detection result is inaccurate in the prior art.

Description

technical field [0001] The invention relates to the technical field of strip steel surface detection, in particular to a method for detecting defects on the strip steel surface. Background technique [0002] In the production process of strip steel, the surface defect of strip steel is one of the important indicators to measure product quality. For example, in the production of cold-rolled sheet, tinplate spray cans, chemical barrels, food cans, etc. have high requirements on surface quality, and usually require Surface defect detection of its steel. [0003] In the existing strip surface defect detection method, usually the camera of the detection system takes pictures of the strip, and then manually analyzes the pictures to determine whether there are defects on the surface. However, in the actual production process, the size and type of defects are various. Yes, the existing detection system cannot adapt to changes in defects. Some defects may not be detected through the...

Claims

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Application Information

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IPC IPC(8): G01N21/88
CPCG01N21/88
Inventor 郭琳琳尹显东莫志英刘学良周纪名迟维峰杨春阳吴明辉陈守关刘丽珍林悦张宝
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD