Strong-antibacterial austenitic stainless steel applied to kitchen supplies

Abstract

The invention aims to provide strong-antibacterial austenitic stainless steel. The chemical components of the strong-antibacterial austenitic stainless steel comprise, by mass, 0.03% or the less of C,0.3-0.5% of Si, 0.3-0.8% of Mn, 0.01% or the less of S, 0.01% or the less of P, 17.5-18.5% of Cr, 7.0-8.0% of Ni, 3.0-5.0% of Cu, 0.2-2.0% of Ga and the balance Fe. By adding Ga in an austenitic stainless steel matrix and through corresponding heat treatment, intermediate phases of alpha-Fe3Ga and beta-Fe3Ga are precipitated from the matrix of the material, the mechanical property of the materialcan be improved, and the material has the quick sterilization property and the antibacterial property under the high bacterial concentration as well. The strong-antibacterial austenitic stainless steel can be applied to relevant stainless steel products related to the kitchen supplies to decrease the occurring probability of the problems such as bacterial infection caused by the kitchen supplies.

Description

technical field [0001] The invention relates to the field of stainless steel, and in particular provides an austenitic stainless steel with antibacterial function and suitable for kitchen supplies. By adding a certain amount of Ga element to the stainless steel matrix and adopting a special heat treatment process, the material has rapid and strong sterilization Features. Background technique [0002] With the development of society and the improvement of people's economic living standards, people pay more and more attention to the surrounding environment and their own health, so antibacterial materials have attracted more and more researchers' attention. Antibacterial stainless steel is also developed under this background. Antibacterial stainless steel refers to the addition of metal elements with antibacterial effects, such as copper (Cu), silver (Ag), etc., on the substrate or surface of existing stainless steel. Through special heat treatment operations, the material ha...

AI Technical Summary

Problems solved by technology

In summary, the existing austenitic antibacterial stainless steel mainly adds a certain amount of Cu or Ag elements to the matrix, but the addition of low-content Cu or Ag elements cannot guarantee the excellent antibacterial performance of the material, while high-content Cu or Ag elements cannot guarantee the excellent antibacterial performance of the material, while high-content Cu or Ag elements The addition of Ag element will deteriorate the hot forging and hot rolling process of the material

In addition, none of the existing related patents shows the rapidity of sterilization of austenitic antibacterial stainless steel and the antibacterial performance under high bacterial concentration

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