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Automatic detection method for optical structure of metallurgical coke

An optical tissue and automatic detection technology, applied in image detector methods and image signal processing, material analysis through optical means, measurement devices, etc., can solve the problem of inability to quantify the content of different anisotropic tissues and distinguish between anisotropic tissues In order to achieve the effect of improving the accuracy of analysis, wide application range and high accuracy

Pending Publication Date: 2021-12-24
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

This detection method can only express the degree of anisotropy through the double reflectance method, and cannot quantify the content of different anisotropic tissues, and the differentiation of different anisotropic tissues is poor

Method used

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  • Automatic detection method for optical structure of metallurgical coke
  • Automatic detection method for optical structure of metallurgical coke
  • Automatic detection method for optical structure of metallurgical coke

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Embodiment 1-5

[0086] Embodiment 1-5: with reference to the MT116.1-86 method of prior art, prepare respectively the powder light sheet of 5 kinds of cokes (being coke 1, coke 2, coke 3, coke 4 and coke 5), and by the present invention The optical structures of the five cokes were identified, classified and quantified respectively.

[0087] The classification and quantification methods of the five cokes are the same, taking one of the cokes as an example, the specific steps are:

[0088] Under the conditions of polarized light and λ complementary color plate, use the optical microscope of the prior art to take images of coke powder sheets under 300 fields of view. One image is taken at each angle of analysis, and all the images taken can be input into the computer equipment of the prior art for image processing and calculation.

[0089] Take the image of the 10°analysis angle of the first field of view, that is, the first image in the first field of view, and remove the background (binder) ...

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Abstract

The invention discloses an automatic detection method for an optical structure of metallurgical coke, which comprises the following steps of: shooting a group of 200-time images with two different polarization analysis angles in the same vision field under the conditions of orthogonal polarization of an optical microscope and addition of a lambda complementary color plate, and identifying a background, a silk group and a fragment structure in the vision field; identifying the anisotropic optical tissue through judgment and calculation of data of two pictures with different polarization analysis angles in the same area, calculating shape characteristic parameters of the identified anisotropic tissue color-changing particles, performing classification through the shape characteristic parameters, and finally calculating the proportion of different types of color-changing particles, and obtaining the proportions of isotropic optical tissues and other optical tissues, and repeating the steps until the proportions of the color-changing particles of all the vision field images are calculated. According to the method, the automatic operation of identification, classification and quantification of the optical structure of the coke can be realized, and the accurate and rapid automatic determination of the optical structure of the coke is realized, so that a reliable analysis means is provided for researching the relationship between the coke quality and the coal blending quality.

Description

technical field [0001] The invention relates to a method for detecting the performance of metallurgical materials, in particular to an automatic method for detecting the optical structure of metallurgical coke. Background technique [0002] At present, the coke optical structure measurement method commonly used at home and abroad is the statistical method of manual counting. Different interference colors are formed under the condition of adding λ complementary color plates under crossed polarized light, and the interference colors change when the stage is rotated. According to the characteristics of the same color area of ​​the interference color changes of various optical structures of coke, the selected points are distinguished and identified , divided into isotropic, anisotropic, silky and fragmented tissue, and basic anisotropic tissue, in which anisotropic tissue is divided into fine-grained mosaic, medium-grained mosaic, coarse-grained mosaic, incomplete fiber, Comple...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N21/17
CPCG01N21/84G01N21/17G01N2021/1765
Inventor 孙维周胡德生
Owner BAOSHAN IRON & STEEL CO LTD
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