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Steel for pre-embedded fastener of glass curtain wall, and production method thereof

A technology of glass curtain wall and production method, which is applied in the direction of workpiece heating device, workpiece surface treatment equipment, metal rolling, etc., which can solve the problems of poor toughness, poor atmospheric corrosion resistance and high production cost, so as to improve wear resistance and strength , high-purity effect

Active Publication Date: 2020-07-28
JIANGSU LIHUAI IRON AND STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the glass curtain wall pre-embedded fasteners made of this steel are poor atmospheric corrosion resistance, poor toughness, and high production costs.

Method used

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  • Steel for pre-embedded fastener of glass curtain wall, and production method thereof
  • Steel for pre-embedded fastener of glass curtain wall, and production method thereof

Examples

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Effect test

Embodiment 1～3

[0047] Prepared by the following production process:

[0048] (1) Hot metal pretreatment: adopt the KR desulfurization method, stir the hot metal in the ladle, stir continuously for 8-10 minutes, form a vortex, gradually put 450Kg~500Kg CaO+CaF2 mixed desulfurizer into the center of the vortex, and keep stirring the hot metal to desulfurize fully react with the sulfur in the molten iron, and then remove the slag by the slag remover to remove the desulfurization products, reduce the S content of the molten iron, and the slag removal rate reaches more than 90%, ensuring that the S of the molten iron after desulfurization is <0.005%;

[0049] (2) Converter smelting: Converter adopts peroxidation blowing, control tapping C ≤ 0.05%, first add deoxidizer aluminum cake according to tapping C, then use metal manganese, nickel plate, low carbon ferrochrome to adjust alloy content, and finally add Lime and low-titanium refining slag; ensure that the refining furnace C≤0.06%, Mn: 0.25%-0...

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Abstract

The invention discloses steel for a pre-embedded fastener of a glass curtain wall, and a production method thereof. The steel for the pre-embedded fastener of the glass curtain wall comprises the following chemical components in percentage by mass: 0.06%-0.09% of C, not greater than 0.10% of Si, 0.30%-0.40% of Mn, 0.40%-0.45% of Cr, 0.40%-0.44% of Ni, 0.35%-0.40% of Mo, 0.20%-0.25% of Cu, 0.020%-0.050% of Al, 0.010%-0.030% of Ti, not greater than 0.018% of P, not greater than 0.010% of S, not greater than 0.0015% of [O], and the balance Fe, wherein As+Sn+Sb+Pb+Bi is not greater than 0.035%. According to the steel for the pre-embedded fastener of the glass curtain wall, and the production method thereof, low C content, Si content and Mn content are designed, and appropriate amounts of elements Cr, Ni, Mo, Cu, Ti, Al and the like are added in the steel, so that the toughness and the corrosion resistance of the steel are improved while the strength is guaranteed, and meanwhile, the weldability is improved. According to the production method, compared with a common Q355B steel plate, cutting procedures for the steel plate, and material waste are reduced, and therefore, the production method has the advantages of being efficient, economic, safe and the like, is capable of greatly overcoming the defects of a method for manufacturing a pre-embedded fastener from the Q355B steel plate,realizes efficient and energy-saving production, and improves the market competitiveness.

Description

technical field [0001] The invention relates to steel for building fasteners in the iron and steel industry, in particular to steel for pre-embedded fasteners for glass curtain walls and a production method thereof. Background technique [0002] Glass curtain wall is a new type of modern wall form, which was widely used in the design of public buildings after World War II. The glass curtain wall applies a large area of ​​glass to the exterior wall of the building to show the modern style of the building, give full play to the characteristics of the glass itself, and make the building look unique, thus giving people a new feeling. Compared with the traditional building enclosure structure, the glass curtain wall has the advantages of light weight, good light transmission, good sound insulation effect, heat insulation, moisture resistance, and high wind pressure resistance. At the same time, it also has single construction materials, convenient construction, and short construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/50C22C38/60B21B1/08B21B1/12B21B45/00
CPCB21B1/0805B21B1/12B21B45/004C22C33/04C22C38/002C22C38/008C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/50C22C38/60
Inventor 左辉唐宁许光乐翟万里郑力宁肖波石可伟
Owner JIANGSU LIHUAI IRON AND STEEL CO LTD
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