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Quantitative analyzing method for non-metal residue in steel

A non-metallic inclusions, quantitative analysis technology, applied in the direction of material analysis, image analysis, material analysis through optical means, etc., can solve the problems of low work efficiency, high labor intensity, observation error, etc., to improve accuracy and efficiency, Realize the effect of mutual conversion

Inactive Publication Date: 2005-08-10
SHIJIAZHUANG IRON & STEEL
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Problems solved by technology

Disadvantages of metallographic method: First, manual operation, high labor intensity and low work efficiency
The second is to observe the microscope for a long time, the eyes are prone to fatigue, and it is easy to introduce observation errors
But the main problem is that the number of visual field images that can be processed at one time is small, and it is impossible to realize continuous and automatic collection of visual field images without leakage. The shortcomings of the above-mentioned metallographic method cannot be effectively overcome.
At the same time, the quantification of inclusions is limited to the evaluation level according to "Determination of non-metallic content in steel-standard rating chart microscopic inspection method" in GB10561-1989, and the analysis results are relatively simple

Method used

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  • Quantitative analyzing method for non-metal residue in steel
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  • Quantitative analyzing method for non-metal residue in steel

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specific Embodiment approach

[0028] The present invention has taken following technical contents:

[0029] 1. Use image stitching and multi-field (more than 60) statistical techniques;

[0030] 2. In order to ensure continuous image acquisition, an automatic stage is used, and the automatic stage is controlled by software to move;

[0031] 3. The quantitative results of inclusion content with different definitions are directly given in the software, and rich statistical data of inclusion parameters are provided at the same time;

[0032] 4. The software includes multi-national inclusion evaluation standards, and the evaluation results of national standards can be converted to each other.

[0033] The quantitative analysis steps adopted in the present invention are divided into: initial setting and calibration of the system, automatic scanning, image acquisition, inclusion extraction, image analysis, report generation and file storage, which will be described separately below.

[0034] The system perform...

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Abstract

The present invention relates to a method for quantitatively analyzing non-metallic inclusion in steel. Said method is characterized by that it makes the metallurgical microscope and automatic objective table be connected with camera and computer, utilizes the camera to collect the inclusion image from metallurgical microscope and feed it into computer to make image processing so as to implement identification of inclusion and parameter measurement, then utilizing quantitative model to calculate the measurement result or make comparison analysis with standard map so as to obtain quantitative evaluated result. Said invention also provides the concrete steps of implementing said method.

Description

technical field [0001] The invention relates to a method for quantitative analysis of non-metallic inclusions in steel, which belongs to the technical field of material physical property detection. Background technique [0002] The content of inclusions is a sign of the cleanliness of steel, and the quantity, size, type and distribution of inclusions in steel significantly affect the properties of steel. Therefore, the quantitative detection of non-metallic inclusions in steel plays a vital role in the steel used in many industries such as machinery, automobiles, and aerospace. [0003] The reported methods for direct detection of inclusions generally include metallographic method, electrolysis method and spectroscopic analysis method: the spectroscopic analysis method is realized by a spark spectrometer, and the results given can provide information on the quantity and type of inclusions in steel, but The current technology is not mature enough and has not reached the leve...

Claims

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Application Information

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IPC IPC(8): G01N21/84G06T7/00
Inventor 牛士珍苑杰安启明
Owner SHIJIAZHUANG IRON & STEEL
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