Economical antibacterial duplex stainless steel and preparation method thereof

一种经济型抗菌双相不锈钢及其制备方法

Abstract

本发明涉及一种经济型抗菌双相不锈钢及其制备方法,属钢铁合金材料技术领域。该含氮经济型抗菌双相不锈钢的成分及质量百分比:0<C≤0.03%,S≤0.01%,Si≤1.0%,P≤0.015%,Cr:18.0~20.0%,Ni:1.5~2.5%,Mo:0.5~1.5%,Cu:0.5~2.0%,N:0.15~0.25%,B:0.001~0.01%,稀土Ce或Y:0.005~0.20%,其余部分为铁。采用传统常规的熔炼工艺方法,在投料时采用纯铁管密封中间合金投入法,即事先制备好Fe-Ce中间合金或Fe-Y中间合金,经综合配料熔制后,浇注成型,经一定固溶时效处理,最终制得含氮经济型抗菌双相不锈钢。该抗菌双相不锈钢低成本且具有良好耐腐蚀性和杀菌性。
The invention relates to economical antibacterial duplex stainless steel and a preparation method thereof, belonging to technical field of the steel alloy material. The nitrogen-containing economical antibacterial duplex stainless steel comprises the following components by weight percent: more than 0 and no more than 0.03% of C, less than or equal to 0.01% of S, less than or equal to 1.0% of Si, less than or equal to 0.015% of P, 18.0-20.0% of Cr, 1.5-2.5% of Ni, 0.5-1.5% of Mo, 0.5-2.0% of Cu, 0.15-0.25% of N, 0.001-0.01% of B, 0.005-0.20% of rare earth element Ce or Y and the of balance iron. The traditional and conventional smelting process is adopted and the adding method of intermediate alloy sealed with the pure iron pipe is adopted when materials are fed, namely Fe-Ce intermediate alloy or Fe-Y intermediate alloy is prepared in advance, comprehensive dosing and melting is performed, then casting moulding is performed, and certain solution-aging treatment is performed to finally prepare the nitrogen-containing economical antibacterial duplex stainless steel. The antibacterial duplex stainless steel has low cost and good corrosion resistance and bactericidal property.

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Patent Citations (4)

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Cited By (3)

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    CN-102994903-AMarch 27, 2013上海大学Duplex stainless steel with paradoxical phase proportion change and preparation method thereof
    CN-103014525-AApril 03, 2013上海大学一种高硅的双相不锈钢及其制备方法
    CN-106337105-AJanuary 18, 2017中国科学院金属研究所Heat treatment method for antibacterial double-phase stainless steel material