Corrosion-inhibiting aluminum-clad strip and manufacturing method thereof

Abstract

The invention discloses a corrosion-inhibiting aluminum-clad strip, which comprises a steel substrate and an aluminum layer coated on the surface of the steel substrate; the mass percentage ratio of chemical elements of the steel substrate is: 0<C≤0.02%, 0< Si≤0.005%, Mn: 0.05‑0.5%, P: 0.018‑0.03%, Al≤0.005%, Cu: 0.04‑0.1%, Cr: 0.1‑0.25%, N: 0.0040‑0.010%, Ti: 0.01‑0.04 %, O: 0.02‑0.050%, the balance being Fe and other unavoidable impurities. In addition, the present invention also discloses a method for manufacturing the above-mentioned corrosion-inhibiting aluminum-clad strip, which includes the steps of: (1) preparing the steel strip and the aluminum strip; (2) performing surface treatment on the steel strip and the aluminum strip; 3) Covering the aluminum strip on the surface of the steel strip and rolling at room temperature; (4) Annealing; (5) Finishing and straightening.

Description

technical field [0001] The invention relates to a strip and a manufacturing method thereof, in particular to an aluminum-clad strip 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 c...

AI Technical Summary

Problems solved by technology

[0006] To sum up, it can be seen that in the current prior art, the aluminum-clad strip usually uses a binder to realize the physical compounding of steel and aluminum, and there is a problem of poor bonding strength of steel and aluminum.

Moreover, since the existing technology is produced by room temperature cold rolling + post-rolling annealing process, the aluminum-clad strip in the prior art generally has the problem of steel-aluminum section corrosion due to the design composition of the steel substrate, which in turn affects the use of aluminum-clad strip

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