CN103667977A - Antibacterial Austenitic stainless steel band - Google Patents
Antibacterial Austenitic stainless steel band Download PDFInfo
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- CN103667977A CN103667977A CN201210328759.3A CN201210328759A CN103667977A CN 103667977 A CN103667977 A CN 103667977A CN 201210328759 A CN201210328759 A CN 201210328759A CN 103667977 A CN103667977 A CN 103667977A
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Abstract
The invention discloses an antibacterial Austenitic stainless steel band. The stainless steel consists of the following components in percentage by weight: 0.05-0.08 percent of C, 4.4-4.8 percent of Mn, 14.5-15.5 percent of Cr, 5.5-6.5 percent of Ni, 1.0-1.2 percent of Cu, 0.4-0.6 percent of Ag, 1.2-1.4 percent of Si, less than or equal to 0.025 percent of S, less than or equal to 0.060 percent of P, 0.5-0.7 percent of Ce, 0.2-0.4 percent of Ti and the balance of Fe and inevitable impurity elements.
Description
Technical field
The present invention relates to ferrous materials processing technique field, particularly a kind of austenic stainless steel belt.
Background technology
Anti-bacteria stainless steel, in stainless steel, add exactly the appropriate metallic element with antibacterial effect (as copper, silver), the steel of producing are after antibacterial heat-treatment, and the antibacterial of rich antiseptic elements separated out from matrix, and even dispersion distributes, be exposed to the water-soluble rear formation hydrated ion of antibacterial metal of stainless steel surface, then contact with bacterium, by with cytosis, damaging cells film, make protein coagulating or damage its DNA, stop bacterial growth breeding or eliminating bacteria.Anti-bacteria stainless steel has stainless advantage and good antimicrobial property, can be widely used in the fields such as electrical home appliances, galley equipment, foodstuffs industry, medical device, communal facility.Along with the enhancing of Chinese society expanding economy and antibacterial consciousness, the raising of people's living standard, the development and application scope of anti-bacteria stainless steel will constantly expand.
A Japan day new system steel company drops into the stainless research and development of copper-bearing antibacterial as far back as nineteen ninety-five, and the initial stage, developing focus was in technology such as alloy designs and surface treatments.Successfully develop the ferritic series anti-bacteria stainless steel (low C, N-17Cr-1.5Cu) with good manufacture processibility and germ resistance the end of the year 1999.Along with the continuous growth of anti-bacteria stainless steel demand and the expanding day of range of application, martensitic (0.3C-13Cr-3Cu) and austenite anti-bacteria stainless steel (18Cr-9Ni-3.8Cu) have in succession been developed again.At the beginning of 2000, Kawasaki Steel company develops silver-containing antibacterial stainless steel and puts on market.At present, domestic and international many experts have started the research and development of antibacterial metallic materials and goods.2003, anti-corrosion and anti-bacteria stainless steel anti-microbial property of having concurrently of Chinese Academy of Sciences metal Research Institute exploitation was filled up domestic blank, has reached same type of material international most advanced level.It is reported, Korea S, the U.S., Canada and China Taiwan are also at active development anti-bacteria stainless steel material.
The anti-bacteria stainless steel of exploitation was main mainly with adding copper in the past, the stainless need of production of copper-bearing antibacterial increases special thermal treatment process, and the copper of high level can make material when continuous casting and rolling, form tiny crack tendency, therefore when smelting, the addition of copper is subject to strict restriction, and its germ resistance is also affected.The stainless production of silver-containing antibacterial does not need to increase special thermal treatment process, and hot-forming property is good, producing feasibility strong, long acting antibiotic is good, its cost is substantially suitable with copper-bearing antibacterial stainless steel.Therefore, the stainless development potentiality of silver-containing antibacterial is huge, is the emphasis of following anti-bacteria stainless steel research and development and production.But Ag solubleness in stainless steel is very little, easily forms segregation, thereby reduced germ resistance.If add-on is too much, can destroys stainless original processing characteristics, mechanics and the performance such as corrosion-resistant, and increase cost.Therefore how to make Ag element be uniformly distributed in stainless steel be the gordian technique containing Ag anti-bacteria stainless steel in research.
In publication number CN1272889A patent, exploitation containing containing in Ag anti-bacteria stainless steel: the chromium that 10% (weight) is above, the Ag of 0.001～0.30% (weight), or also contain the vanadium of 0.001～1.0% (weight).In addition, be dispersed with more than 0.0005% silver suboxide in stainless steel, this silver suboxide is silver content below 1.1 times.For silver suboxide is dispersed in stainless steel, when carrying out the continuous casting of molten steel, continuous casting speed is preferentially at 0.8～1.6 m/min.In publication number CN1256716A patent, also there is similar method, its composition is: the chromium that 10% (weight) is above, the Ag of 0.001～1% (weight), or further contain be selected from Sn:0.0002～0.02% (weight), Zn:0.002～0.02% (weight), Pt:0.0002～0.02% (weight) more than a kind or a kind, in addition, make a kind in silver particles, silver oxide and the silver-colored sulfide below average out to 500 μ m to be scattered in above in this stainless steel, it is more than 0.001% adding up to area occupation ratio.In order to make silver particles, silver oxide and silver-colored sulfide dispersed, continuous casting speed is at 0.8～1.6 m/min.Visible, the gordian technique of these two patents is to control continuous casting speed, silver particles and patina thing is distributed in alloy equably, to obtain the object of high antibiotic rate.So just require certain smelting and continuous casting installation for casting and skilled operative technique.
In publication number CN1789471A patent, developed a kind of elder generation tri-kinds of elements of Cu-Ag-Zn have been made to master alloy through melting by a certain percentage, then it has been used as to a kind of furnace charge, in stainless steel smelting, add to make anti-bacteria stainless steel.This method effect is more satisfactory, but the optimal components of Cu-Ag-Zn ternary master alloy is difficult for grasp, and Zn also can produce detrimentally affect to stainless hot workability in addition.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to provide a kind of antibacterial austenic stainless steel belt.
For achieving the above object, the technical solution used in the present invention is as follows:
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.05-0.08, Mn:4.4-4.8, Cr:14.5-15.5, Ni:5.5-6.5, Cu:1.0-1.2, Ag:0.4-0.6, Si:1.2-1.4, S≤0.025, P≤0.060, Ce:0.5-0.7, Ti:0.2-0.4, all the other are Fe and inevitable impurity element.
Preferably, described stainless steel is comprised of following component by weight percentage: C:0.06-0.07, Mn:4.5-4.7, Cr:14.8-15.2, Ni:5.8-6.2, Cu:1.05-1.15, Ag:0.45-0.55, Si:1.25-1.35, S≤0.025, P≤0.060, Ce:0.55-0.65, Ti:0.25-0.35, all the other are Fe and inevitable impurity element.
Most preferably, described stainless steel is comprised of following component by weight percentage: C:0.065, Mn:4.6, Cr:15.0, Ni:6.0, Cu:1.10, Ag:0.50, Si:1.30, S≤0.025, P≤0.060, Ce:0.60, Ti:0.30, all the other are Fe and inevitable impurity element.
The design considerations of stainless chemical composition of the present invention is as follows:
Ni and Cr: nickel is austenite former, can promote the stability of passivation film on stainless steel surface, improves stainless thermodynamic stability, so in steel, nickel and chromium coexist, and can significantly improve stainless steel solidity to corrosion.Chromium is the element that affects stainless steel solidity to corrosion maximum, and the height of chromium content has determined the erosion resistance of steel, and span of control is 14.5-15.5%.
Mn: as a kind of weak austenite former, suitable manganese add-on can replace part of nickel, improves nickel equivalent, according to nickel add-on of the present invention, the content of manganese is controlled to 4.4-4.8%.
S, P, as harmful element, in the situation that taking into account smelting equipment ability and steel performance, are controlled at S≤0.025% and P≤0.060% by S, P content.
Cu and Ag: play the principal element of anti-microbial effect, copper, silver element add separately the anti-microbial property that can improve steel.The prerequisite that copper plays anti-microbial effect is could produce antibacterial effect mutually by high-temperature aging process disperse educt ε-Cu in matrix, and the thermoplasticity of carrying austenitic stainless steel after high copper content declines, so add, the process costs of steel after copper improves, hot workability is deteriorated.The Antibacterial Mechanism of silver is: 1) silver ions is combined with cytolemma and membranin, destroys bacterium three-dimensional arrangement, causes bacterium dead; 2) silver can be catalyzed into active oxygen by oxygen, and active oxygen has sterilizing ability.Research shows, silver-colored antibacterial ability is 100 times of copper, and without ageing treatment, adds silver-colored cost of alloy by the reduction partial offset of the minimizing of alloy addition and process costs.So present inventor also selects silver as antiseptic elements.Meanwhile, in steel, original copper adding forms ε-Cu in timeliness and can promote silver ions at the ride-through capability of steel surface passivated membrane after mutually, forms composite antibacterial mechanism, reaches to greatest extent antibacterial effect.By great many of experiments, grope, balance anti-microbial property and stainless other performance, and balance copper and the two ratio of silver, the add-on of copper is controlled at 1.0-1.2% the most at last, and silver-colored add-on is controlled to 0.4-0.6%.
Consider stainless steel grain fineness number and mechanics, the performance such as anti-corrosion, thereby the content of controlling Si, Ce and Ti is above-mentioned optimum range.
The present invention has following beneficial effect:
The present invention is optimized design to stainless chemical composition, adopt orthogonal test, filter out best Cu and the content range of Ag, consider the over-all propertieies such as solidity to corrosion and mechanical property simultaneously, filter out the optimum content scope of alloy element Mn, Cr, Ni, Si, Ce and Ti, the technique effect that each alloy element is played is mutually collaborative, makes this stainless performance best.Stainless steel of the present invention has kept the good mechanical property of original steel grade and corrosion resistance, and has good broad spectrum antibacterial performance, can suppress and kill various common bacteriums, and effect is lasting.
Embodiment
Embodiment mono-
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.05, Mn:4.8, Cr:14.5, Ni:6.5, Cu:1.0, Ag:0.6, Si:1.2, S≤0.025, P≤0.060, Ce:0.7, Ti:0.2, all the other are Fe and inevitable impurity element.
Embodiment bis-
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.08, Mn:4.4, Cr:15.5, Ni:5.5, Cu:1.2, Ag:0.4, Si:1.4, S≤0.025, P≤0.060, Ce:0.5, Ti:0.4, all the other are Fe and inevitable impurity element.
Embodiment tri-
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.06, Mn:4.7, Cr:14.8, Ni:6.2, Cu:1.05, Ag:0.55, Si:1.25, S≤0.025, P≤0.060, Ce:0.65, Ti:0.25, all the other are Fe and inevitable impurity element.
Embodiment tetra-
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.07, Mn:4.5, Cr:15.2, Ni:5.8, Cu:1.15, Ag:0.45, Si:1.35, S≤0.025, P≤0.060, Ce:0.55, Ti:0.35, all the other are Fe and inevitable impurity element.
Embodiment five
An antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.07, Mn:4.6, Cr:15.0, Ni:6.0, Cu:1.1, Ag:0.5, Si:1.3, S≤0.025, P≤0.060, Ce:0.6, Ti:0.3, all the other are Fe and inevitable impurity element.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (3)
1. an antibacterial austenic stainless steel belt, is characterized in that, described stainless steel is comprised of following component by weight percentage: C:0.05-0.08, Mn:4.4-4.8, Cr:14.5-15.5, Ni:5.5-6.5, Cu:1.0-1.2, Ag:0.4-0.6, Si:1.2-1.4, S≤0.025, P≤0.060, Ce:0.5-0.7, Ti:0.2-0.4, all the other are Fe and inevitable impurity element.
2. a kind of antibacterial austenic stainless steel belt as claimed in claim 1, is characterized in that, described stainless steel is comprised of following component by weight percentage: C:0.06-0.07, Mn:4.5-4.7, Cr:14.8-15.2, Ni:5.8-6.2, Cu:1.05-1.15, Ag:0.45-0.55, Si:1.25-1.35, S≤0.025, P≤0.060, Ce:0.55-0.65, Ti:0.25-0.35, all the other are Fe and inevitable impurity element.
3. a kind of antibacterial austenic stainless steel belt as claimed in claim 2, is characterized in that, described stainless steel is comprised of following component by weight percentage: C:0.065, Mn:4.6, Cr:15.0, Ni:6.0, Cu:1.10, Ag:0.50, Si:1.30, S≤0.025, P≤0.060, Ce:0.60, Ti:0.30, all the other are Fe and inevitable impurity element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210328759.3A CN103667977A (en) | 2012-09-06 | 2012-09-06 | Antibacterial Austenitic stainless steel band |
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| CN201210328759.3A CN103667977A (en) | 2012-09-06 | 2012-09-06 | Antibacterial Austenitic stainless steel band |
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| CN103667977A true CN103667977A (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086077A (en) * | 2022-01-11 | 2022-02-25 | 科华控股股份有限公司 | Cast iron-based austenite creep-resistant steel and preparation method and application thereof |
| CN117737566A (en) * | 2023-12-21 | 2024-03-22 | 河北恩泉环境工程有限公司 | Preparation method and system of antibacterial rare earth stainless steel material |
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2012
- 2012-09-06 CN CN201210328759.3A patent/CN103667977A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086077A (en) * | 2022-01-11 | 2022-02-25 | 科华控股股份有限公司 | Cast iron-based austenite creep-resistant steel and preparation method and application thereof |
| CN117737566A (en) * | 2023-12-21 | 2024-03-22 | 河北恩泉环境工程有限公司 | Preparation method and system of antibacterial rare earth stainless steel material |
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Application publication date: 20140326 |