Antibacterial stainless steel composite steel plate and its manufacturing method

Abstract

The invention discloses an antibacterial stainless steel composite steel plate, which comprises a carbon steel substrate and a surface antibacterial stainless steel layer. The surface antibacterial stainless steel layer comprises the following chemical elements of: by weight, 0-10% of Cu, 0-1.0% of Ag, 13-28% of Cr, 0-18% of Mn, 0-0.4% of N, 0-3% of Mo, 0-6% of Al, 0-2% of V, 0-1.0% of Zn, 0-15% of Ni, C being less than or equal to 0.08%, Si being less than or equal to 0.15%, P being less than or equal to 0.03%, S being less than or equal to 0.01%, Ti being less than or equal to 1%, and the balance being Fe and other inevitable impurities. Correspondingly, the inventor also discloses a manufacturing method of the antibacterial stainless steel composite steel plate. According to the method, the antibacterial stainless steel layer is prepared on the surface of the carbon steel substrate with good processability by a specific technology, and then a composite treatment is carried out by aspecial processing technology to form the antibacterial stainless steel composite steel plate which has corrosion resistance, antibacterial property and cold workability at the same time.

Description

technical field [0001] The invention relates to a composite steel plate in the field of metallurgy and a manufacturing method thereof, in particular to a stainless steel composite steel plate and a manufacturing method thereof. Background technique [0002] Antibacterial stainless steel refers to stainless steel that adds an appropriate amount of alloy elements with antibacterial effect to stainless steel, and after antibacterial treatment, the final product has stable processability and good antibacterial properties. Antibacterial alloy elements include mercury, silver, lead, copper, aluminum, nickel, zinc, cadmium, etc. According to the principle of not having negative effects on the human body, silver, copper and silver-copper compounds are generally added: [0003] (1) Copper-containing antibacterial stainless steel. The copper-containing antibacterial stainless steel is the same as the general stainless steel smelting process: the stainless steel water with qualified c...

AI Technical Summary

Problems solved by technology

However, due to the overall addition of precious silver and copper metal elements in the matrix, the manufacturing cost increases; in addition, the addition of copper elements will also make the casting slab prone to micro-cracks during continuous casting and rolling, which greatly increases the difficulty of manufacturing process control

At the same time, the influence of alloying elements on the processing properties of materials is different, so the types of elements that can be selected are greatly limited.

In addition, because the smelting, continuous casting, hot processing, cold rolling and other preparation processes of this stainless steel and the forming process of the final product are greatly affected by the addition of elements, its performance is also greatly affected

In order to reduce the production cost of materials, it is necessary to strictly control the amount of precious metals added, but it will be difficult to ensure the antibacterial effect

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