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Steel for high-strength aluminum-coated substrate and manufacturing method thereof

A manufacturing method and high-strength technology, applied in the directions of manufacturing tools, chemical instruments and methods, furnace types, etc., can solve the problems of increasing the production difficulty of aluminum-clad substrates, not having steel-aluminum bonding properties, and limiting the P content, achieving excellent comprehensive Mechanical properties, excellent steel-aluminum interface bonding properties, and the effect of reducing production processes

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; Greatly increased the production difficulty of aluminum-clad substrate

Method used

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  • Steel for high-strength aluminum-coated substrate and manufacturing method thereof
  • Steel for high-strength aluminum-coated substrate and manufacturing method thereof
  • Steel for high-strength aluminum-coated substrate and manufacturing method thereof

Examples

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Embodiment 1-8

[0049] Table 1 lists the mass percentage (wt%) of each chemical element in the steel for high-strength aluminum-clad substrates of Examples 1-8.

[0050] Table 1. (wt%, the balance is Fe and other unavoidable impurity elements except S)

[0051]

[0052]

[0053] 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%.

[0054] The manufacturing method of the steel for the high-strength aluminum-clad substrate of Examples 1-8 is obtained by the following steps:

[0055] (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.

[0056] (2) Reheating: th...

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Abstract

The invention discloses steel for a high-strength aluminum-coated substrate. The steel comprises following chemical elements: by mass, 0.008-0.02% of C, greater than 0 and less than or equal to 0.005%of Si, 0.25-0.5% of Mn, 0.018-0.03% of P, less than or equal to 0.005% of Al, 0.0040-0.010% of N, 0.02-0.04% of Ti, 0.02-0.050% of O, and the balance Fe and other inevitable impurities. In addition,the invention further discloses a manufacturing method of the steel for the high-strength aluminum-coated substrate. The manufacturing method comprises the steps of (1) conducting smelting and casting; (2) conducting reheating, specifically, reheating a casting blank to 1180 DEG C-1250 DEG C; (3) conducting rough rolling; (4) conducting finish rolling; (5) conducting coiling; and (6) cooling the casting blank to the indoor temperature. The steel for the high-strength aluminum-coated substrate is good in mechanical performance, high in strength, excellent in plasticity and quite suitable for generation of aluminum-coated steel.

Description

technical field [0001] The invention relates to a steel and a manufacturing method thereof, in particular to a steel for a 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, especially greatly reducing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C22C38/06C22C38/04C22C38/02C22C33/04C21D8/02
CPCC22C38/14C22C38/06C22C38/04C22C38/02C22C38/002C22C38/001C22C33/04C21D8/0205C21D2211/005C21D1/60C21D9/46C22C38/004C21D8/0226B32B15/012B21C47/02C21D6/005C21D6/008
Inventor 宋凤明王巍胡晓萍温东辉刘运华王俊凯
Owner BAOSHAN IRON & STEEL CO LTD
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