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Steel-aluminum composite board and preparation method thereof

A composite plate, steel-aluminum technology, applied in the direction of sheet/plate, metal rolling, manufacturing tools, etc., can solve the problems of forming brittle iron-aluminum metal compounds, composite layer inclusions, poor quality of steel-aluminum composite panels, etc., to improve the combination Strength, excellent mechanical performance indicators, and the effect of enhancing the bonding density

Inactive Publication Date: 2012-10-17
JIANGSU LONGYUAN METAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the preparation methods of steel-aluminum composite panels usually include hot-dip coating of steel strips, thermal spraying, explosive rolling, cold rolling, etc. The quality of steel-aluminum composite panels produced by the above methods is poor, and there are pinholes, A series of problems such as inclusions in the composite layer and formation of brittle iron-aluminum metal compounds, and the steel-aluminum composite panels prepared by the above method will generate intermetallic compounds on the steel-aluminum interface during the brazing process, resulting in delamination of steel and aluminum, so Cannot be used in brazing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The steel-aluminum composite plate is composed of a steel strip and an aluminum alloy strip, the steel strip contains 0.005% by weight of C content, 0.010% by weight of Si content, 0.10% by weight of Mn content, and 0.10% by weight of P content. The weight percentage of Si content is 0.008%, the weight percentage of S content is 0.006%; The weight percentage of Si content in described aluminum alloy belt is 0.75%, the weight percentage of Fe content is 0.36%, the weight percentage of Cu content is 0.02%, Mn The weight percentage of content is 0.03%.

[0017] The thickness of the aluminum alloy strip is 50um.

[0018] The preparation method of the described steel-aluminum composite panel comprises the following steps:

[0019] a. Pretreat the surface of steel strip and aluminum alloy strip;

[0020] b. Send the steel strip and aluminum alloy strip after surface pretreatment together into the compound rolling mill for compound rolling. The pressure of compound rolling i...

Embodiment 2

[0026] The steel-aluminum composite plate is composed of a steel strip and an aluminum alloy strip, the steel strip contains 0.008% by weight of C content, 0.020% by weight of Si content, 0.20% by weight of Mn content, and 0.20% by weight of P content. The weight percentage of Si content is 0.012%, the weight percentage of S content is 0.002%; The weight percentage of Si content in described aluminum alloy belt is 0.80%, the weight percentage of Fe content is 0.40%, the weight percentage of Cu content is 0.03%, Mn The weight percentage of content is 0.01%.

[0027] The thickness of the aluminum alloy strip is 70um.

[0028] The preparation method of the described steel-aluminum composite panel comprises the following steps:

[0029] a. Pretreat the surface of steel strip and aluminum alloy strip;

[0030] b. Send the steel strip and aluminum alloy strip after surface pretreatment together into the compound rolling mill for compound rolling. The pressure of compound rolling i...

Embodiment 3

[0036] The steel-aluminum composite plate is composed of a steel strip and an aluminum alloy strip, the steel strip contains 0.012% by weight of C, 0.025% by weight of Si, 0.30% by weight of Mn, and 0.30% by weight of P. The weight percentage of Si content is 0.018%, the weight percentage of S content is 0.010%; The weight percentage of Si content in described aluminum alloy belt is 0.85%, the weight percentage of Fe content is 0.45%, the weight percentage of Cu content is 0.04%, Mn The weight percentage of content is 0.03%.

[0037] The thickness of the aluminum alloy strip is 90um.

[0038] The preparation method of the described steel-aluminum composite panel comprises the following steps:

[0039] a. Pretreat the surface of steel strip and aluminum alloy strip;

[0040] b. Send the steel strip and aluminum alloy strip after surface pretreatment together into the compound rolling mill for compound rolling. The pressure of compound rolling is 1000t, the single pass reducti...

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Abstract

The invention relates to a steel-aluminum composite board which is formed by compounding a steel belt and an aluminum alloy belt, wherein the steel belt comprises the following components in percentage by weight: less than or equal to 0.012% of C, less than or equal to 0.025% of Si, 0.10-0.30% of Mn, less than or equal to 0.018% of P and less than or equal to 0.010% of S; and the aluminum alloy belt comprises the following components in percentage by weight: 0.75-0.85% of Si, 0.36-0.45% of Fe, less than 0.05% of Cu and less than or equal to 0.03% of Mn. The preparation method comprises the following steps of: a, pretreatment; b, compounding rolling; and c, recrystallizing and annealing. Through the invention, the prepared steel-aluminum composite board has excellent mechanical performance index, and the bonding strength between the steel belt and the aluminum alloy is guaranteed after the brazing of a cooler fin.

Description

technical field [0001] The invention relates to a steel-aluminum composite board and a preparation method thereof. Background technique [0002] At present, the preparation methods of steel-aluminum composite panels usually include hot-dip coating of steel strips, thermal spraying, explosive rolling, cold rolling, etc. The quality of steel-aluminum composite panels produced by the above methods is poor, and there are pinholes, A series of problems such as inclusions in the composite layer and formation of brittle iron-aluminum metal compounds, and the steel-aluminum composite panels prepared by the above method will generate intermetallic compounds on the steel-aluminum interface during the brazing process, resulting in delamination of steel and aluminum, so Cannot be used in brazing technology. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a steel-aluminum composite board and its preparation method, the steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S1/00B21B1/38B21B15/00C22C38/04C22C21/02
Inventor 卢其元郁仁兴刘咏王喜明孙惠忠李忠明王海华郁建峰
Owner JIANGSU LONGYUAN METAL TECH
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