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High-strength steel structural member for building curtain wall engineering and heat treatment process thereof

A technology for steel structures and curtain walls, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as poor toughness

Active Publication Date: 2021-02-19
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the rapid development of science and technology, the development direction of almost all engineering structural materials, including building curtain wall engineering, is high strength and high toughness. Unfortunately, the relationship between strength and toughness has always been mutually restrictive, and toughness is the limit. The key factor for the development of structural materials. Although the strength of the high-strength steel structural parts used in the existing building curtain wall projects can reach the standard, the toughness is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength steel structural member used in building curtain wall engineering, calculated by weight percentage, includes the following components:

[0027] C: 0.06%, Si: 0.3%, V: 0.3%, Cr: 0.1%, Al: 0.02%, Hf: 0.1%, Mo: 0.1%, Mn: 1.2%, Ir: 0.05%, rare earth elements: 0.06% , S≤0.005%, P≤0.015%, and the balance is Fe and unavoidable impurities.

[0028] The rare earth elements are Pr, Nd and Yb, and the mass ratio of Pr, Nd and Yb is 1:0.2:0.6.

[0029] The above-mentioned heat treatment process for high-strength steel structural parts used in building curtain wall engineering includes the following steps:

[0030] Step 1, billet smelting: smelting in a converter according to the following composition, the weight percentage of composition is: C: 0.06%, Si: 0.3%, V: 0.3%, Cr: 0.1%, Al: 0.02%, Hf: 0.1%, Mo: 0.1%, Mn: 1.2%, Ir: 0.05%, rare earth elements: 0.06%, S≤0.005%, P≤0.015%, the balance is Fe and unavoidable impurities; cast on the mold to form a steel plate, a...

Embodiment 2

[0039] A high-strength steel structural member used in building curtain wall engineering, calculated by weight percentage, includes the following components:

[0040] C: 0.12%, Si: 0.6%, V: 0.6%, Cr: 0.1~0.4%, Al: 0.03%, Hf: 0.4%, Mo: 0.3%, Mn: 1.8%, Ir: 0.1%, rare earth elements: 0.2%, S≤0.005%, P≤0.015%, the balance is Fe and unavoidable impurities.

[0041] The rare earth elements are Pr, Nd and Yb, and the mass ratio of Pr, Nd and Yb is 1:0.8:1.5.

[0042] The above-mentioned heat treatment process for high-strength steel structural parts used in building curtain wall engineering includes the following steps:

[0043] Step 1, billet smelting: smelting in a converter according to the following composition, the weight percentage of the composition is: C: 0.12%, Si: 0.6%, V: 0.6%, Cr: 0.1-0.4%, Al: 0.03%, Hf: 0.4 %, Mo: 0.3%, Mn: 1.8%, Ir: 0.1%, rare earth elements: 0.2%, S≤0.005%, P≤0.015%, the balance is Fe and unavoidable impurities; cast on the mold to form a steel plate,...

Embodiment 3

[0052] A high-strength steel structure used in building curtain wall engineering and its heat treatment process greatly improves the toughness of the existing high-strength steel structure used in building curtain wall engineering.

[0053] Technical scheme of the present invention is as follows:

[0054] An object of the present invention is to provide a kind of high-strength steel structural part for building curtain wall engineering, calculate according to weight percentage, comprise following composition:

[0055] C: 0.08%, Si: 0.4%, V: 0.5%, Cr: 0.3%, Al: 0.03%, Hf: 0.2%, Mo: 0.2%, Mn: 1.5%, Ir: 0.07%, rare earth elements: 0.12% , S≤0.005%, P≤0.015%, and the balance is Fe and unavoidable impurities.

[0056] The rare earth elements are Pr, Yb and Sc, and the mass ratio of Pr, Yb and Sc is 1:1.2:2.3.

[0057] The above-mentioned heat treatment process for high-strength steel structural parts used in building curtain wall engineering includes the following steps:

[0058...

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Abstract

The invention relates to a high-strength steel structural member for building curtain wall engineering and and a heat treatment process thereof. The high-strength steel structural member comprises thefollowing components in percentage by weight: 0.06-0.12% of C, 0.3-0.6% of Si, 0.3- 0.6% of V, 0.1-0.4% of Cr, 0.02-0.03% of Al, 0.1-0.4% of Hf, 0.1-0.3% of Mo, 1.2-1.8% of Mn, 0.05-0.1% of Ir, 0.06-0.2% of rare earth elements, less than or equal to 0.005% of S and less than or equal to 0.015% of P and the balance Fe and inevitable impurities. The invention solves the problem that although the strength of an existing high-strength steel structural member used for existing building curtain wall engineering can reach the standard, the toughness of the high-strength steel structural member is poor. By optimizing the composition and heat treatment of the existing steel structural member, the high-strength and high-toughness (ductility) steel structural member for building curtain wall engineering is finally obtained.

Description

technical field [0001] The invention relates to the field of building steel structures, in particular to a high-strength steel structure used in building curtain wall engineering and a heat treatment process thereof. Background technique [0002] Due to its excellent comprehensive mechanical properties such as strength, plasticity and toughness, high-strength steel has been widely used in important engineering fields, such as key components such as aircraft landing gear, oil transportation pipelines, and nuclear power plant pressure vessels. In recent years, with the rapid development of science and technology, the development direction of almost all engineering structural materials, including building curtain wall engineering, is high strength and high toughness. Unfortunately, the relationship between strength and toughness has always been mutually restrictive, and toughness is the limit. The key factor for the development of structural materials. Although the strength of ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/38C21D1/18C21D1/74C21D6/00C21D8/02C21D9/00
CPCC22C38/02C22C38/04C22C38/38C22C38/24C22C38/06C22C38/002C22C38/22C22C38/005C21D1/18C21D1/74C21D6/002C21D6/005C21D6/008C21D8/0221C21D9/0081Y02P10/20
Inventor 卢汉文赵冰陈舟陈泽鹏朱健
Owner FOSHAN UNIVERSITY