Austenitic stainless steel having ultra-high antibacterial property and applied to chemical industry production

Abstract

The invention aims to provide an austenitic stainless steel material having the ultra-high antibacterial property and applied to chemical industry production, and a preparation method thereof. The austenitic stainless steel material has the function of effectively resisting high-concentration bacteria under the solution treatment and aging heat treatment states, and the bacterial and microbial corrosion risks caused during using of austenitic stainless steel are lowered remarkably, wherein the concentration is larger than (8-9)*10<6> CFU/mL. The chemical components of the stainless steel comprise 16.0-18.0 of Cr, 10.0-14.0 of Ni, 2.0-3.0 of Mo, 2.0-4.0 of Cu, 0.5-2.0 of Ga, 0.1-0.16 of N, 0.03 or the less of C, 0.75 or the less of Si, 2.0 or the less of Mn, 0.045 or the less of P, 0.03 orthe less of S and the balance Fe. The austenitic stainless steel having the ultra-high antibacterial property is widely applied to chemical industry production containing ultra-high-concentration bacteria and mainly comprises a storage container and a liquid conveying pipeline.

Description

technical field [0001] The invention relates to the technical field of austenitic stainless steel materials, in particular to an austenitic stainless steel with ultra-high antibacterial performance used in chemical production and a preparation method thereof. Background technique [0002] Conventional stainless steel equipment for transporting or storing liquids, after long-term use, the accumulated scale or impurities will adhere to the inner wall of the pipeline to breed microorganisms. When the amount of liquid in the storage container or pipeline is small or there is no liquid circulation , the residual microorganisms will form a large flora after a certain period of time, which will cause extensive corrosion of the container or pipeline, and the quality of the liquid will also be polluted. With the improvement of people's living standards, antibacterial, antibacterial and antiviral health management has become an issue of great concern in today's society. The traditiona...

AI Technical Summary

Problems solved by technology

However, during the use of pipelines and containers, it is found that there are bacteria and microorganisms in the environment of liquid storage and transmission, and their long-term stable existence will cause strong corrosive damage, making microbial corrosion behavior widely concerned

Therefore, the corrosion behavior of microorganisms greatly reduces the service life of 316LN austenitic stainless steel. It is necessary to use antibacterial 316LN-Cu austenitic stainless steel for chemical environments containing bacteria and microorganisms. However, due to the The concentration of bacteria present is very high. Affected by the limitations of the current antibacterial functional stainless steel, it is an effective way to provide an austenitic stainless steel with ultra-high antibacterial performance and its preparation method

Images