Large-section H-shaped steel and production process thereof

A production process, the technology of H-shaped steel, applied in the field of metallurgy, can solve the problems of high efficiency, inability to produce in ordinary steel mills, and great market potential, and achieve the effects of simple production process, reduced load and energy consumption, and improved overall performance

Inactive Publication Date: 2018-03-23
ANHUI KINGYOUNG STRUCTURAL METAL WORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products of these steel types have high efficiency and great market potential, which cannot be produced by ordinary steel mills.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A large section H-shaped steel, the mass percentage of the chemical composition of the material includes:

[0018] Carbon 0.08%, silicon 0.15%, manganese 1.25%, vanadium 0.10%, nitrogen 0.008%, phosphorus 0.006%, sulfur 0.06%, niobium 0.03%, thallium 0.03%, polonium 0.03%, terbium 0.02%, nickel 0.01%, Al s 0.015%, the balance is iron and impurity elements, and the balance is iron and impurity elements.

[0019] A large-section H-beam production process. The rolling process parameters are: heating temperature 1200°C, bloom opening temperature 1000°C, finishing rolling opening temperature 960°C, finishing rolling temperature 860°C;

[0020] The cooling process parameters are as follows: the rolled piece is cooled to 700°C at a cooling rate of 110°C / s to undergo a phase change, then return to 780°C, and finally the H-beam is naturally cooled to room temperature.

Embodiment 2

[0022] A large section H-shaped steel, the mass percentage of the chemical composition of the material includes:

[0023] Carbon 0.08%, Silicon 0.15%, Manganese 1.25%, Vanadium 0.15%, Nitrogen 0.010%, Phosphorus 0.006%, Sulfur 0.06%, Niobium 0.03%, Thallium 0.03%, Polonium 0.03%, Terbium 0.02%, Nickel 0.01%, Als 0.015 %, the balance is iron and impurity elements, and the balance is iron and impurity elements.

[0024] A large-section H-beam production process. The rolling process parameters are: heating temperature 1200°C, bloom opening temperature 1000°C, finishing rolling opening temperature 960°C, finishing rolling temperature 860°C;

[0025] The cooling process parameters are as follows: the rolled piece is cooled to 700°C at a cooling rate of 110°C / s to undergo a phase change, then return to 780°C, and finally the H-beam is naturally cooled to room temperature.

Embodiment 3

[0027] A large section H-shaped steel, the mass percentage of the chemical composition of the material includes:

[0028] Carbon 0.08%, Si 0.15%, Manganese 1.25%, Vanadium 0.20%, Nitrogen 0.012%, Phosphorus 0.006%, Sulfur 0.06%, Niobium 0.03%, Thallium 0.03%, Polonium 0.03%, Terbium 0.02%, Nickel 0.01%, Als 0.015 %, the balance is iron and impurity elements, and the balance is iron and impurity elements.

[0029] A large-section H-beam production process. The rolling process parameters are: heating temperature 1200°C, bloom opening temperature 1000°C, finishing rolling opening temperature 960°C, finishing rolling temperature 860°C;

[0030] The cooling process parameters are as follows: the rolled piece is cooled to 700°C at a cooling rate of 110°C / s to undergo a phase change, then return to 780°C, and finally the H-beam is naturally cooled to room temperature.

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PUM

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Abstract

The invention discloses large-section H-shaped steel and a production process thereof. The large-section H-shaped steel comprises the following chemical components in percentage by mass: 0.08-0.13% ofcarbon, 0.15-0.35% of silicon, 1.25-1.45% of manganese, 0.10-0.20% of vanadium, nitrogen not more than 0.012%, phosphorus not more than 0.01%, sulfur not more than 0.010%, 0.03-0.05% of niobium, 0.03-0.05% of thallium, 0.03-0.05% of polonium, 0.02-0.04% of terbium, 0.01-0.02% of nickel, and the balance of iron and impurity elements. The produced large-section H-shaped steel is lower in alloy content and high in final rolling temperature, reduces the load and the energy consumption of a rolling mill, and improves the production efficiency.

Description

Technical field [0001] The invention relates to the field of metallurgical technology, in particular to a large-section H-shaped steel and its production process. Background technique [0002] The current H-beam production capacity is basically balanced with domestic demand. The development of large-section, low-alloy and high-strength structural H-beam steel can meet the special requirements of new steel grades. The products of these steel grades are highly efficient and have great market potential, which cannot be produced by ordinary steel plants. These products reflect the company's technical strength, grasp the market for high-grade H-section steel, and increase market share. [0003] Hot-rolled H-shaped steel has the advantages of energy saving and high efficiency, economical and reasonable cross-sectional shape, uniform extension of each point on the cross-section during rolling, and low internal stress. It is widely used in high-rise buildings, plant construction, and tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/12C22C38/08C21D8/00
CPCC22C38/02C21D8/005C22C38/001C22C38/002C22C38/005C22C38/04C22C38/08C22C38/12
Inventor 章阳
Owner ANHUI KINGYOUNG STRUCTURAL METAL WORK
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