Martensite aging anti-microbial stainless steel and preparation method thereof

Abstract

The invention relates to martensite aging anti-microbial stainless steel and a preparation method thereof, and belongs to the technical field of materials. Chemical components of the martensite aginganti-microbial stainless steel comprise, by weight percent, 0.35%-0.50% of C, 13.5%-16.5% of Cr, 1.5%-4.5% of Cu, 0.5%-1.0% of Mo, 0.1%-0.2% of V, not larger than 1.0% of Mn, not larger than 1.0% of Si, smaller than 0.01% of P, smaller than 0.01% of S, smaller than 0.005% of O, not larger than 0.05% of N and the balance Fe. The preparation method of the martensite aging anti-microbial stainless steel comprises the steps of batching, smelting, casting forming, forging and heat processing and cold processing and heat treatment. The Cu element of a certain content is added, after the heat treatment process is optimized, the martensite-austenite ratio is adjusted and controlled, optimal matching of material strength and toughness is obtained, and good corrosion resistance and broad-spectrum mold resistance are shown.

Description

technical field [0001] The invention relates to a maraging antibacterial stainless steel and a preparation method thereof, belonging to the technical field of materials. Background technique [0002] At present, my country's low-grade cutting tool materials usually choose martensitic stainless steel or duplex stainless steel with price advantages, and these materials are easy to corrode and have poor performance (such as cutting performance, sharpness and durability), so they are easily damaged during use. The lifespan is short; while the high-carbon high-chromium martensitic stainless steel material used in high-end knives has high strength and hardness, but the toughness is insufficient, which is easy to cause the edge of the knife to chip, and the price is expensive, which cannot be accepted by many families. At the same time, with the improvement of national living standards, people have put forward new requirements for household knives: such as the antibacterial and anti...

AI Technical Summary

Problems solved by technology

[0004] Stainless steel materials for knives are currently commonly used low-carbon and low-chromium martensitic stainless steels. Compared with well-known brands of knives and scissors in Europe and the United States, these materials are of poorer quality and do not have antibacterial properties. The raw materials used for high-end knives and scissors products have higher requirements. The quality of raw materials produced by domestic large-scale steel mills is unstable, and the preparation technology of maraging antibacterial stainless steel has not yet been mastered. All materials are imported. At present, European and American knife products monopolize the high-end knife market, which seriously restricts the development of my country's knife industry in the international market.

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