Corrosion-inhibiting steel for aluminum-clad substrate and manufacturing method thereof
A technology for inhibiting corrosion and manufacturing method, applied in the field of steel for aluminum-clad substrates and its manufacturing, can solve the problems of lack of steel-aluminum bonding properties, affecting the use of aluminum-clad strip steel, corrosion of steel-aluminum sections, etc., and achieving excellent comprehensive mechanical properties. , low cost, and the effect of improving production efficiency
Active Publication Date: 2021-10-22
BAOSHAN IRON & STEEL CO LTD
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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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Examples
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Comparison scheme
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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 a corrosion-inhibiting steel for an aluminum-clad substrate. The mass percentage ratio of chemical elements is: 0<C≤0.01%, 0<Si≤0.005%, Mn: 0.08-0.2%, P: 0.018-0.03 %, Al≤0.005%, Cu: 0.04‑0.1%, Cr: 0.1‑0.25%, N: 0.0040‑0.010%, Ti: 0.01‑0.035%, O: 0.02‑0.050%, the balance being Fe and others unavoidable of impurities. The present invention also discloses the above-mentioned manufacturing method of the corrosion-inhibiting aluminum-clad substrate steel, which includes the steps of: (1) smelting and casting; (2) reheating: the slab is reheated to 1180°C-1250°C; (3 ) rough rolling; (4) finishing rolling; (5) coiling; (6) cooling to room temperature. The steel for the aluminum-clad substrate has good mechanical properties, high strength and good plasticity, and inhibits 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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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