Processing method for antibacterial stainless steel

Abstract

The invention discloses a processing method for antibacterial stainless steel. The processing method includes the steps of 1, sequentially carrying out alkali washing, chemical oxidation, aluminum deposition and acid pickling to obtain primary work-pieces, wherein stainless steel work-pieces are placed into a steam chamber filled with water vapor and then are immersed into concentrated sulfuric acid solutions for 5 minutes in the chemical oxidation process and aluminum colloid is sprayed on the surfaces of the stainless steel work-pieces and then the stainless steel work-pieces are sintered in the aluminum deposition process; 2, spraying silver colloid on the surfaces of the primary work-pieces and then sintering the primary work-pieces, wherein in the spraying process, the primary work-pieces are in a vibration state and the vibration frequency is 100-150 times per minute; and 3, spraying the silver colloid on the surfaces of the work-pieces treated in the step 2 and then sintering the work-pieces at 300-350 DEG C for 10 min, wherein the spraying flow is 0.1-0.5 mL/min and the spraying time is 10-12 min. The antibacterial stainless steel can be produced through the processing method for the antibacterial stainless steel.

Description

technical field [0001] The invention relates to a processing method of antibacterial stainless steel. Background technique [0002] At present, stainless steel products have been widely used in food, tableware, medical equipment, etc., which also makes stainless steel instant noodles very easy to breed bacteria, fungi and other microorganisms to form a permanent biofilm, which is extremely harmful to people's health. big threat. Therefore, with the improvement of people's living standards, people have more and more demands for safe, durable, high-efficiency, and broad-spectrum antibacterial stainless steel. [0003] Antibacterial stainless steel currently on the market mainly includes copper-added antibacterial stainless steel, surface-coated antibacterial stainless steel, silver-added antibacterial stainless steel, etc. The heat treatment process of copper-added stainless steel plates is complicated, and excessive copper addition will also lead to increased micro-cracks in...

AI Technical Summary

Problems solved by technology

[0003] Antibacterial stainless steel currently on the market mainly includes copper-added antibacterial stainless steel, surface-coated antibacterial stainless steel, silver-added antibacterial stainless steel, etc. The heat treatment process of copper-added stainless steel plates is complicated, and excessive copper addition will also lead to increased micro-cracks in stainless steel. In the end, the cost of copper-added stainless steel is too high, so it is necessary to strictly limit the amount of copper added, which also makes the antibacterial ability of copper-added stainless steel not strong

Surface-coated antibacterial stainless steel is mainly covered with a layer of titanium dioxide film on the surface of stainless steel. Since titanium dioxide only strongly absorbs ultraviolet rays with a wavelength less than 400nm in sunlight, the antibacterial stainless steel is antibacterial in environments with weak or no light. not effectively

Therefore, from the comprehensive consideration of safety and antibacterial properties, silver-added antibacterial stainless steel is the best, but the antibacterial effect and cost of silver or silver compounds and stainless steel are also very different.