Corrosion-inhibiting steel for aluminum-clad substrate and manufacturing method thereof

A technology for corrosion inhibition and manufacturing methods, applied in the field of steel for aluminum-clad substrates and its manufacturing, can solve problems affecting the use of aluminum-clad strip steel, corrosion of steel-aluminum cross-sections, and lack of steel-aluminum bonding properties, etc., to achieve low cost and high efficiency. The effect of production efficiency and excellent comprehensive mechanical properties

Active Publication Date: 2020-06-30
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from this that, on the one hand, the steel types involved in the prior art do not have steel-aluminum bonding properties, and only have the same strength and plasticity as Al; Problems that affect the use of aluminum-clad strip steel

Method used

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  • Corrosion-inhibiting steel for aluminum-clad substrate and manufacturing method thereof
  • Corrosion-inhibiting steel for aluminum-clad substrate and manufacturing method thereof
  • Corrosion-inhibiting steel for aluminum-clad substrate and manufacturing method thereof

Examples

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Embodiment 1-8

[0056] Table 1 lists the mass percentage (wt%) of each chemical element in the steel for corrosion-inhibiting aluminum-clad substrates of Examples 1-8.

[0057] Table 1. (wt%, the balance is Fe and other unavoidable impurity elements except S)

[0058]

[0059] It can be seen from Table 1 that compared with the prior art, the mass percentages of Si and Al in each embodiment of this case are below 0.005%, the mass percentage of O is between 0.02-0.05%, and the mass percentage of N is between 0.0040- 0.010%. In addition, in this case, P is added as a favorable element, therefore, the mass percentage of P is controlled at 0.018-0.03%.

[0060] The manufacturing method of the corrosion-inhibiting aluminum-clad substrate steel of embodiment 1-8 adopts the following steps to obtain:

[0061] (1) Smelting and casting: According to the chemical element composition shown in Table 1, smelt on a 500kg vacuum induction furnace, and cast to obtain a slab.

[0062] (2) Reheating: the ...

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Abstract

The invention discloses corrosion-inhibiting steel for an aluminum-coated substrate. The corrosion-inhibiting stee comprises the following chemical elements in percentage by mass, C is greater than 0and less than or equal to 0.01%, Si is greater than 0 and less than or equal to 0.005%, 0.08-0.2% of Mn, 0.018-0.03% of P, Al is less than or equal to 0.005%, 0.04-0.1% of Cu, 0.1-0.25% of Cr, 0.0040-0.010% of N, 0.01%-0.035% of Ti, 0.02%-0.050% of O and the balance of Fe and other inevitable impurities. The invention further discloses a manufacturing method of the corrosion-inhibiting steel for the aluminum-coated substrate. The manufacturing method comprises the following steps of (1) smelting and casting; (2) reheating, reheating the casting blank to 1180 DEG C to 1250 DEG C; (3) rough rolling; (4) finish rolling; (5) coiling; and (6) cooling to room temperature. The steel for the aluminum-coated substrate is good in mechanical property, high in strength, good in plasticity and capableof inhibiting corrosion.

Description

technical field [0001] The invention relates to a steel for a substrate and a manufacturing method thereof, in particular to a steel for an aluminum-clad substrate and a manufacturing method thereof. Background technique [0002] With the development of technology and economy, the performance requirements of metal materials are getting higher and higher, and it is often difficult for a single composition of metal materials to meet the performance requirements of multiple aspects in the actual use process at the same time. Selecting two or more metal materials and using various processes to make composite panels can meet special comprehensive performance requirements. Aluminum-clad steel is a composite strip with aluminum on the surface and steel on the core layer by rolling the aluminum film on the surface of the strip at room temperature. It has the strength of steel and the good heat dissipation and corrosion resistance of aluminum. , Lightweight and beautiful features, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C22C38/02C22C38/04C22C38/06C22C38/20C22C38/28
CPCC21D8/0226C21D2211/005C22C38/001C22C38/002C22C38/004C22C38/02C22C38/04C22C38/06C22C38/20C22C38/28
Inventor 宋凤明王巍温东辉杨阿娜王俊凯庞厚君刘运华
Owner BAOSHAN IRON & STEEL CO LTD
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