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A preparation method of ah36 hot rolled flat bulb steel based on adam-svm model

An AH36, bulb flat steel technology, applied in nuclear method, metal rolling, metal rolling, etc., can solve the problems of cumbersome composition design process, high R&D cost, long R&D cycle, etc., to avoid dimensional disaster and improve accuracy degree, to achieve the effect of organic coupling

Active Publication Date: 2022-07-29
UNIV OF SCI & TECH BEIJING +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Related prior art also includes a large-scale high-strength marine flat bulb steel and its production process. The composition design of the bulb flat steel is based on physical metallurgical laws and experience for EH36, and a bulb flat steel with high low-temperature impact toughness has been developed. The composition design process is relatively cumbersome and needs to be verified through a large number of experiments, which requires relatively high R&D costs and a long R&D cycle

Method used

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  • A preparation method of ah36 hot rolled flat bulb steel based on adam-svm model
  • A preparation method of ah36 hot rolled flat bulb steel based on adam-svm model
  • A preparation method of ah36 hot rolled flat bulb steel based on adam-svm model

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1: After using the Adam-SVM model to optimize the element composition of AH36 hot-rolled flat bulb steel, smelting and casting according to the above composition range to obtain a billet with a cross-section of 280mm × 165mm, and then detect the composition of the billet, as shown in the table 1.

[0055] Table 1 Composition of steel billets (wt.%)

[0056]

[0057] Rolling was carried out according to the order of 850BD / 800TRM / 950SCI / 950SCⅡ rolling mill, and the rolling passes were 5 / 3 / 1 / 1 respectively. After rolling, HP370×13 specification bulb flat steel was obtained.

[0058] Table 2 Mechanical properties

[0059]

Embodiment 2

[0060] Example 2: After using the Adam-SVM model to optimize the element composition of AH36 hot-rolled flat bulb steel, smelting and casting according to the above composition range to obtain a billet with a cross-section of 280mm × 165mm, and then detect the composition of the billet, as shown in the table 3.

[0061] Table 3 Composition of steel billets (wt.%)

[0062]

[0063] Rolling was carried out in the order of 850BD / 800TRM / 950SCI / 950SCⅡ rolling mills, and the rolling passes were 5 / 3 / 1 / 1 respectively. After rolling, HP370×13 specification bulb flat steel was obtained.

[0064] Table 4 Mechanical properties

[0065]

Embodiment 3

[0066] Example 3: After using the Adam-SVM model to optimize the element composition of AH36 hot-rolled flat bulb steel, smelting and casting according to the above composition range to obtain a billet with a cross-section of 280mm × 165mm, and then detect the composition of the billet, as shown in the table 5.

[0067] Table 5. Composition of steel billets (wt.%)

[0068]

[0069] Rolling was carried out in the order of 850BD / 800TRM / 950SCI / 950SCⅡ rolling mill, and the rolling passes were 5 / 3 / 1 / 1 respectively. After rolling, HP370×13 specification bulb flat steel was obtained.

[0070] Table 6 Mechanical properties

[0071]

[0072] In order to further highlight the effect of the present invention, the following two groups of comparisons are provided. When the Adam-SVM algorithm is not used to classify and optimize the composition properties, and the process optimization is not performed (the rolling temperature is above 1200°C), the composition properties are as shown ...

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Abstract

The invention discloses a preparation method of AH36-grade hot-rolled flat bulb steel based on Adam-SVM model. Alloy composition: According to the obtained alloy composition, the continuous casting billet is obtained by converter smelting, out-of-furnace refining, and protective casting; Universal rolling mill conducts hot rolling to obtain bulb flat steel; after hot sawing, it is cooled by air cooling on the cooling bed, cooled to a certain temperature, and then sprayed and cooled. The technical scheme of the invention formulates an optimized alloy design scheme based on a machine learning algorithm, reasonably reduces the content of the added elements in the steel, further reduces the cost, and shortens the research and development period. At the same time, through the optimized design of heating system and rolling process, low-cost and high-performance bulb flat steel has been successfully developed.

Description

technical field [0001] The invention belongs to the technical field of flat bulb steel manufacturing, and in particular relates to a method for preparing AH36-grade hot-rolled flat bulb steel based on an Adaptive Moment Estimation (Adam)-Support Vector Machine (SVM) model. Background technique [0002] Entering the 21st century, the field of shipbuilding and marine engineering equipment in my country has ushered in a new period of rapid growth. The rapid development of the field of shipbuilding and marine engineering equipment has put forward the urgent needs of high strength, high toughness and corrosion resistance for steel used in shipbuilding and marine engineering. At the same time, it also needs to meet the needs of large thickness and large size specifications. The average annual demand for ship steel in the international new shipbuilding market is about 80 million tons. In 2019, the domestic demand for ship steel reached about 12 million tons, and the trend is increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/02B21B15/00B21B43/00C22C38/02C22C38/04C22C38/06C22C38/12G06F30/27G06N20/10
CPCB21B1/026B21B15/0007B21B43/00C22C38/02C22C38/04C22C38/06C22C38/12G06F30/27G06N20/10B21B2201/06G06F2119/08
Inventor 于浩赵勋王厚昕李宇晗王锟孙玉春
Owner UNIV OF SCI & TECH BEIJING
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