Multi-layer antibacterial stainless steel material and preparation method thereof

A technology of antibacterial stainless steel and stainless steel, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of increasing production processes and increasing costs

Inactive Publication Date: 2021-06-15
上海华杰生态环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to achieve better antibacterial properties in the industrial production process of copper-containing antibacterial stainless steel, a series of heat treatment processes such as solid solution and aging are required to precipitate enough nano-copper-rich phases in the matrix, which not only gives copper-containing antibacterial properties The industrialized production of stainless steel brings an increase in the production process and increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] A kind of preparation method of multi-layer antibacterial stainless steel material, described preparation method comprises the following steps:

[0036] The copper-gallium-containing antibacterial stainless steel material in the middle layer is made into a rod shape;

[0037] The copper-containing antibacterial stainless steel material is made into filaments and wound on the surface of the rod-shaped copper-gallium-containing antibacterial stainless steel material;

[0038] Compressing the copper-gallium-containing antibacterial stainless steel material wound with the copper-containing antibacterial stainless steel material to form a sheet-shaped antibacterial stainless steel material;

[0039] Put the sheet-shaped antibacterial stainless steel material and the bottom stainless steel material through a soaking furnace and then enter a hot rolling mill for hot rolling to obtain a multi-layer antibacterial stainless steel material with a surface layer thickness of 10-500 ...

Embodiment 1

[0057] The copper-gallium-containing antibacterial stainless steel material (C: ≤0.010; Si: ≤0.50; Mn: ≤1.00; P: ≤0.03; S: ≤0.04; Ni: 10; Cr: 20; Cu: 3; Ga: 5; the balance is Fe) made into a rod; the copper-containing antibacterial stainless steel material (C: ≤0.010; Si: ≤0.50; Mn: ≤1.00; P: ≤0.03; S: ≤0.04; Ni: 10; Cr: 20 ; Cu: 3; the balance is Fe) made into filaments and wound on the surface of rod-shaped copper-gallium-containing antibacterial stainless steel material; The flaky antibacterial stainless steel material and the stainless steel material of the bottom layer enter the hot continuous rolling mill for hot rolling after passing through the soaking furnace, and obtain a surface layer with a thickness of 100 microns, a middle layer with a thickness of 20 microns, and a second middle layer with a guard of 100 microns. Multi-layer antibacterial stainless steel material;

[0058] The continuous casting composite billet is cut to a fixed length to obtain a fixed-length...

Embodiment 2

[0061] Same as Example 1, the thickness of the surface layer of the multilayer antibacterial stainless steel material is 50 microns, the thickness of the middle layer is 20 microns, and the thickness of the second middle layer is 50 microns. The antibacterial rate of Escherichia coli and Staphylococcus aureus of multi-layer antibacterial stainless steel material is 99.9%.

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Abstract

The invention relates to a multi-layer antibacterial stainless steel material. The multi-layer antibacterial stainless steel material sequentially comprises a surface layer, a middle layer, a second middle layer and a bottom layer from top to bottom, wherein the bottom layer is made of a stainless steel material, the surface layer and the second middle layer are made of a copper-containing antibacterial stainless steel material, the middle layer is made of a copper-containing and gallium-containing antibacterial stainless steel material, and the thickness of the surface layer is 10-500 microns. The invention further relates to a preparation method of the multi-layer antibacterial stainless steel material. Due to the fact that an existing copper-containing antibacterial material is poor in antibacterial effect, Ga and copper can achieve complementation, a better antibacterial effect is obtained, however, when the Ga content is too high, the hot working performance and the cold forming performance of stainless steel can be seriously affected, and the practical application of the copper-containing antibacterial material is limited. By designing the multi-layer antibacterial stainless steel material, the copper-containing antibacterial material with high Ga content is designed in the middle layer, so that the copper-containing antibacterial material on the surface has a better antibacterial effect.

Description

technical field [0001] The invention relates to a multilayer antibacterial stainless steel material and a preparation method thereof. Background technique [0002] Antibacterial stainless steel is a new type of steel material developed in recent years. It uses the continuous dissolution of trace Cu ions to show strong, broad-spectrum and long-lasting bactericidal function. This new material with both structure and function integration has been realized. Industrial production and application. [0003] The antibacterial effect of stainless steel in the air environment is not satisfactory. Since the mass percentage of copper in copper-containing stainless steel itself is very small, it cannot have a larger percentage like copper alloys. When in contact with bacteria, it can form enough osmotic pressure to destroy enough bacterial cell walls. In addition, in order to achieve better antibacterial performance in the industrial production process of copper-containing antibacteria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/18B32B15/20C21D1/18C22C38/00C22C38/02C22C38/04C22C38/42
CPCB32B15/01B32B15/18B32B15/20C22C38/004C22C38/02C22C38/04C22C38/42C22C38/002C21D1/18B32B2307/7145
Inventor 叶海霞马志恒
Owner 上海华杰生态环境工程有限公司
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