Anti-bacterial dual-phase stainless steel and machining process thereof

A technology of duplex stainless steel and processing technology, which is applied in the field of duplex stainless steel, can solve the problems of high nickel content and high price, and achieve the effects of improving corrosion resistance, antibacterial performance and mechanical properties

Active Publication Date: 2018-04-06
内蒙古明拓铁素体新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emergence of austenitic antibacterial stainless steel has increased the additional functions of austenitic stainless steel and further broadened the application field of austenitic stainless steel. However, the chromium-nickel austenitic antibacterial stainless steel is more expensive because of its high nickel content.

Method used

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  • Anti-bacterial dual-phase stainless steel and machining process thereof
  • Anti-bacterial dual-phase stainless steel and machining process thereof
  • Anti-bacterial dual-phase stainless steel and machining process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The antibacterial duplex stainless steel provided in the first embodiment includes the following components by mass percentage:

[0052] C: 0.02%;

[0053] Si: 0.58%;

[0054] Mn: 4.37%;

[0055] S: 0.005%;

[0056] P: 0.015%;

[0057] Cr: 14.32%;

[0058] Mo: 1.47%;

[0059] W: 0.30%;

[0060] B: 0.012%;

[0061] Cu: 2.38%;

[0062] Ag: 0.009%;

[0063] Nb: 0.023%;

[0064] N: 0.31%;

[0065] Ba: 0.05%;

[0066] Mixed rare earth: 0.011%;

[0067] Fe margin.

[0068] Further, in this embodiment 1, the mixed rare earth is lanthanum-cerium mixed rare earth; in the lanthanum-cerium mixed rare earth, La≤45% and Ce≤51%; in the lanthanum-cerium mixed rare earth, there is also La and Ce The total content is greater than or equal to 99.7%; the lanthanum-cerium mixed rare earth also contains one or more rare earth elements of praseodymium, neodymium, promethium, and samarium.

[0069] The processing technology of antibacterial duplex stainless steel provided in the first embodiment includes the follo...

Embodiment 2

[0079] The antibacterial duplex stainless steel provided by the second embodiment includes the following components by mass percentage:

[0080] C: 0.019%;

[0081] Si: 0.87%;

[0082] Mn: 5.52%;

[0083] S: 0.005%;

[0084] P: 0.015%;

[0085] Cr: 16.55%;

[0086] Mo: 1.72%;

[0087] W: 0.48%;

[0088] B: 0.013%;

[0089] Cu: 2.76%;

[0090] Ag: 0.015%;

[0091] Nb: 0.041%;

[0092] N: 0.39%;

[0093] Ba: 0.08%;

[0094] Mixed rare earth: 0.018%;

[0095] Fe margin.

[0096] Further, in this embodiment 2, the mixed rare earth is a lanthanum-cerium mixed rare earth; in the lanthanum-cerium mixed rare earth, La≤45% and Ce≤51%; in the lanthanum-cerium mixed rare earth, there is also La and Ce The total content is greater than or equal to 99.7%; the lanthanum-cerium mixed rare earth also contains one or more rare earth elements of praseodymium, neodymium, promethium and samarium.

[0097] The processing technology of antibacterial duplex stainless steel provided in the second embodiment includes the f...

Embodiment 3

[0107] The antibacterial duplex stainless steel provided in the third embodiment includes the following components by mass percentage:

[0108] C: 0.017%;

[0109] Si: 1.02%;

[0110] Mn: 7.45%;

[0111] S: 0.004%;

[0112] P: 0.013%;

[0113] Cr: 18.28%;

[0114] Mo: 2.62%;

[0115] W: 0.63%;

[0116] B: 0.016%;

[0117] Cu: 3.10%;

[0118] Ag: 0.009%;

[0119] Nb: 0.056%;

[0120] N: 0.48%;

[0121] Ba: 0.010%;

[0122] Mixed rare earth: 0.029%;

[0123] Fe margin.

[0124] Further, in Example 3, the mixed rare earth is lanthanum-cerium mixed rare earth; in the lanthanum-cerium mixed rare earth, La≤45% and Ce≤51%; in the lanthanum-cerium mixed rare earth, there is also La and Ce The total content is greater than or equal to 99.7%; the lanthanum-cerium mixed rare earth also contains one or more rare earth elements of praseodymium, neodymium, promethium and samarium.

[0125] The processing technology of antibacterial duplex stainless steel provided in the third embodiment includes the following st...

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Abstract

The invention discloses anti-bacterial dual-phase stainless steel, and belongs to the technical field of dual-phase stainless steel. The stainless steel comprises C, Si, Mn, S, P, Cr, Mo, W, B, Cu, Ag, Nb, N, Ba, Fe and lanthanum cerium mixed rare earth. The invention further discloses a machining process of the anti-bacterial dual-phase stainless steel. The steel has the beneficial effects of being free of nickel, low in production cost, and good in anti-bacterial performance. The colon bacillus and staphylococcus sterilizing rate reaches 99.9%, and the steel can be widely used for the fieldof pharmacy, health care instruments, food processing industry and catering utensils, freezing devices, and sewage treatment and purification devices.

Description

Technical field [0001] The invention relates to a stainless steel and a processing technique thereof, in particular to an antibacterial duplex stainless steel and a processing technique thereof, and belongs to the technical field of duplex stainless steel. Background technique [0002] Duplex stainless steel refers to a steel with half austenite phase and ferrite phase. It has excellent corrosion resistance and toughness. It is widely used in petrochemical equipment, pulp and paper industry and nuclear power industry steel. It has been studied for use in antibacterial stainless steel and other fields, and has a good development prospect. [0003] Antibacterial stainless steel has been researched since the 1990s. After years of development, a variety of antibacterial stainless steels such as martensitic, ferritic and austenitic stainless steels have been developed. The addition of alloying elements will result in two ratios of duplex stainless steels. The changes have brought certa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/38C22C38/22C22C38/32C22C38/20C22C38/26C21D8/00C21D6/00
CPCC21D6/002C21D6/005C21D6/008C21D8/005C21D2211/001C21D2211/005C22C38/002C22C38/005C22C38/007C22C38/02C22C38/20C22C38/22C22C38/26C22C38/32C22C38/38
Inventor 刘晓李兴成代巧任维彬
Owner 内蒙古明拓铁素体新材料有限公司
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