Method for evaluating banded structure in steel
A band structure and evaluation method technology, which is applied in image data processing, testing metals, material inspection products, etc., can solve the problems of large fluctuations in band structure evaluation results, achieve high repeatability, and avoid uncertainty.
Pending Publication Date: 2021-04-09
BAOSTEEL SPECIAL STEEL SHAOGUAN CO LTD
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However, the results of manual judgment have great uncertainty, which makes the results of banded tissue evaluation fluctuate greatly
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[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.
[0016] It should be noted that "and / or" in this application, such as "feature 1 and / or feature 2", all refer to "feature 1", "feature 2" or "feature 1" alone Add "Feature 2", the three cases.
[0017] In addition, in the description of the present application, unless otherwise specified, "above", "below" and "within" are all expressions that include the original number; the range of "value a ~ value b" includes th...
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The invention provides a method for evaluating a banded structure in steel, and belongs to the technical field of steel structure detection. The method for evaluating the banded structure in the steel comprises the steps of material marking, deep learning and banded structure evaluation. Material marking: selecting a plurality of banded tissue pictures as training materials; and marking the ferrite banded structure in each training material, including marking the structure boundary and marking the structure level in combination with the size information. And deep learning: carrying out recognition learning on each marked training material in sequence by adopting a deep neural network model, including initializing by utilizing the size information, the organization boundary information and the organization level information of each training material to obtain a banded organization recognition model. And banded structure evaluation: taking the banded structure picture as a to-be-evaluated material, and analyzing the ferrite banded structure of the to-be-evaluated material by adopting the banded structure identification model. The evaluation method is high in repeatability and can effectively avoid uncertainty of subjective judgment.
Description
technical field [0001] The present application relates to the technical field of iron and steel structure detection, in particular, to a method for evaluating banded structures in steel. Background technique [0002] During the hot working process of steel, ferrite precipitates from the austenite in bands along the processing deformation direction, and the undecomposed austenite is divided into bands. When cooled to the transformation temperature of pearlite, bainite, etc. At the same time, the belt-shaped supercooled austenite transforms into belt-shaped pearlite, bainite and other organizations, that is, the formation of ferrite and the second type of organizational belt. The banded structure refers to the alternating bands of the microstructure parallel to the processing direction formed by the deformation and elongation of the microsegregation zone during the plastic processing of the steel. [0003] The existence of the banded structure makes the structure of the steel...
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IPC IPC(8): G06T7/00G01N21/84G01N33/204
CPCG06T7/0004G01N21/84G01N33/204G06T2207/20081G06T2207/20084G06T2207/30136
Inventor 董凤奎黄铸铭刘年富廖美华王银国邓湘斌周成宏张正波钟芳华罗新中
Owner BAOSTEEL SPECIAL STEEL SHAOGUAN CO LTD