Resource-saving type 290 MPa-grade steel plate for building anti-seismic energy dissipation structure and manufacturing and application of steel plate

A resource-saving and structural technology, applied in the field of metallurgy, can solve the problems of high cost and insufficient use of manganese alloy resources, and achieve the effects of strong laminar tear resistance, economical composition design, and high section shrinkage.

Active Publication Date: 2021-09-28
CHONGQING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the composition of the steel described in the invention, the Mn content is 0.90-1.20%. For this level of steel, the use of manganese alloy resources is not economical enough. The alloy cost of the components of the steel manufacturing method is 133.9 yuan / ton, and the cost is relatively low. high

Method used

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  • Resource-saving type 290 MPa-grade steel plate for building anti-seismic energy dissipation structure and manufacturing and application of steel plate
  • Resource-saving type 290 MPa-grade steel plate for building anti-seismic energy dissipation structure and manufacturing and application of steel plate
  • Resource-saving type 290 MPa-grade steel plate for building anti-seismic energy dissipation structure and manufacturing and application of steel plate

Examples

Experimental program
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Effect test

Embodiment 1

[0059] According to the composition and content of the chemical components shown in Table 1, and the steel plate manufacturing process control conditions shown in Table 2, a 290MPa-level steel plate for building anti-seismic energy-dissipating structures with a thickness of 40mm was manufactured. The specific production process is as follows:

[0060] 1. Desulfurization molten iron: KR desulfurization process is adopted, and the S content of molten iron is 0.030%.

[0061] 2. Converter smelting: adding alloy to dissolve the alloy evenly.

[0062] 3. Out-of-furnace refining (LF+RH): Out-of-furnace refining is carried out through LF furnace and RH vacuum furnace treatment to reduce O, H, N, H and other harmful gases and P, S content, and remove impurities in molten steel.

[0063] 4. Continuous casting of slabs: Protective casting of 300mm thick slabs, equipped with electromagnetic stirring and light pressing.

[0064] 5. Slow cooling of the slab: slow cooling of the slab off t...

Embodiment 2

[0078] According to the composition and content of the chemical components shown in Table 1, and the steel plate manufacturing process control conditions shown in Table 2, a 290MPa-level steel plate for building anti-seismic energy-dissipating structures with a thickness of 40mm was manufactured. The specific production process is as follows:

[0079] 1. Desulfurized hot metal: KR desulfurization process is adopted, and the S content of the hot metal is 0.040%.

[0080] 2. Converter smelting: adding alloy to dissolve the alloy evenly.

[0081] 3. Out-of-furnace refining (LF+RH): Out-of-furnace refining is carried out through LF furnace and RH vacuum furnace treatment to reduce O, H, N, H and other harmful gases and P, S content, and remove impurities in molten steel.

[0082] 4. Continuous casting of slabs: Protective casting of 300mm thick slabs, equipped with electromagnetic stirring and light pressing.

[0083] 5. Slow cooling of the slab: slow cooling of the slab off the ...

Embodiment 3

[0097] According to the composition and content of the chemical components shown in Table 1, and the steel plate manufacturing process control conditions shown in Table 2, a 290MPa-level steel plate for building anti-seismic energy-dissipating structures with a thickness of 60mm was manufactured. The specific production process is as follows:

[0098] 1. Desulfurization molten iron: KR desulfurization process is adopted, and the S content of molten iron is 0.030%.

[0099] 2. Converter smelting: adding alloy to dissolve the alloy evenly.

[0100] 3. Out-of-furnace refining (LF+RH): Out-of-furnace refining is carried out through LF furnace and RH vacuum furnace treatment to reduce O, H, N, H and other harmful gases and P, S content, and remove impurities in molten steel.

[0101] 4. Continuous casting of slabs: Protective casting of 300mm thick slabs, equipped with electromagnetic stirring and light pressing.

[0102] 5. Slow cooling of slabs: slow cooling of slabs off the pro...

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Abstract

The invention belongs to the technical field of metallurgy, and particularly discloses a resource-saving type 290 MPa-grade steel plate for a building anti-seismic energy dissipation structure and manufacturing and application of the steel plate. The steel plate comprises, by weight, 0.13%-0.18% of C, smaller than or equal to 0.15% of Si, 0.60%-0.80% of Mn, smaller than or equal to 0.030% of P, smaller than or equal to 0.020% of S, smaller than or equal to 0.0080% of N and the balance Fe and inevitable impurities. According to the 290 MPa-grade steel plate for the building anti-seismic energy dissipation structure, component design is economical and reasonable, the comprehensive mechanical performance is excellent, the alloy element content is low, resources can be effectively saved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a resource-saving steel plate for a 290MPa-level building anti-seismic energy-dissipating structure and its manufacture and application. Background technique [0002] With the advancement of the seismic design level of steel structure buildings, energy dissipation and seismic design has become a development direction of building seismic resistance. Due to its unique mechanical properties, steel with low yield point yields before the main body of the structure in an earthquake, and relies on repeated plastic deformation to absorb earthquake energy, so as to ensure that the main body of the structure does not undergo major damage, and achieve the purpose of reducing casualties and property losses. Low yield point steel has good ductility and low yield strength, and has a narrow range of strength fluctuations, and is low in cost, easy to maintain and replace, and has significant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C21C7/10C21D8/02C22C33/04
CPCC22C38/04C22C38/02C22C33/04C21C7/10C21D8/0226Y02P10/20
Inventor 向浪涛黄微涛何洪霞姜颖叶剑李风影徐丹刘送良李东平唐存虎
Owner CHONGQING IRON & STEEL CO LTD
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