Method for preparing antibacterial stainless steel material

Abstract

The invention discloses a method for preparing a multi-layer antibacterial stainless steel material. The antibacterial stainless steel material is basically composed of a double-layer structure of steel forming a base and steel forming a surface antibacterial layer. A double-layer composite material with the base material and the surface layer material metallurgically bonded is formed through a double-layer composite casting method, the double-layer composite board obtained through continuous casting is subjected to fixed-length cutting to obtain a double-layer slab with a fixed length, rolling is performed to obtain the antibacterial stainless steel material, then, heat treatment, rolling and stamping are performed to obtain a semi-finished product, and the semi-finished product is subjected to antibacterial heat treatment, rough grinding, fine grinding polishing, cleaning, drying and packaging to obtain a finished product. According to the method, the processing process has a low cost, and the antibacterial layer has a large thickness. Besides, the base and the surface antibacterial layer are composed of stainless steel components, metallurgical bonding formed in the casting process is high in strength and firm, wear resistance is achieved, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of an antibacterial stainless steel material. Background technique [0002] Antibacterial materials have a long history of development. In BC, humans discovered that covering wounds with silver sheets could prevent infection and accelerate wound healing. In the 19th century, studies found that metals such as silver ions had an inhibitory effect on microorganisms. After entering the 20th century, the research on antibacterial materials has developed rapidly, and various antibacterial agents have been developed and applied to all aspects of life. [0003] In modern society, the requirements for public safety, health and quality of life are constantly improving. Therefore, various products with higher safety and health performance are also developing rapidly and being widely used. Among them, stainless steel materials are widely used in const...

AI Technical Summary

Problems solved by technology

At present, the main types of antibacterial stainless steel are 1. Integral antibacterial stainless steel: that is, metal elements such as silver, copper, and zinc are added during the smelting process to make the surface and interior of the stainless steel have antibacterial properties at the same time. The problem with this preparation method is that it consumes more Metal elements such as silver, copper and zinc, and for most applications, it is often only necessary to have antibacterial properties on the surface, and the overall antibacterial stainless steel will cause a considerable degree of waste

2. Surface-type antibacterial stainless steel: that is, a metal or non-metal antibacterial layer is formed on the surface of stainless steel by coating or infiltration. The antibacterial performance comes from the addition of metal antibacterial elements or photocatalytic antibacterial materials. Such materials require additional coating or The infiltration process increases the processing flow and increases the production cost, and the problem of wear or shedding of the surface coating during long-term use has not been effectively solved

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