CN106337105B - A kind of heat treatment method of antibacterial duplex stainless steel material - Google Patents
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 title claims abstract description 43
- 229910001039 duplex stainless steel Inorganic materials 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 24
- 239000010935 stainless steel Substances 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 19
- 241000894006 Bacteria Species 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000006104 solid solution Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 230000002147 killing effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 14
- 229910001566 austenite Inorganic materials 0.000 abstract description 13
- 239000003208 petroleum Substances 0.000 abstract description 5
- 239000010949 copper Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 230000000845 anti-microbial effect Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 230000001580 bacterial effect Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000003115 biocidal effect Effects 0.000 description 3
- 239000013068 control sample Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 239000004113 Sepiolite Substances 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 229940088710 antibiotic agent Drugs 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000008204 material by function Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 241001001815 Methylobacterium salsuginis Species 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
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- 238000004220 aggregation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
It is an object of the invention to provide a kind of heat treatment method of antibacterial duplex stainless steel, antibacterial duplex stainless steel can have effective antibacterial functions under single condition of heat treatment, it is characterised in that：Antibacterial heat-treatment is solution treatment, and the temperature of solution treatment is 1050~1250 DEG C, is incubated 5~20 hours, water cooling to room temperature.Antibacterial duplex stainless steel has stable ferrite/austenite two-phase rock-steady structure simultaneously, can be widely used in the Material Fields such as chemical industry, petroleum-based energy, power plant and ocean engineering.
Description
Technical field
The present invention relates to two phase stainless steel field of material technology, specially a kind of heat treatment of antibacterial duplex stainless steel material
Method.Using the Technology for Heating Processing of uniqueness, the ferrite in cupric two phase stainless steel can be adjusted only by solid solution treatment method
Ratio so that antibacterial duplex stainless steel material has the effective function of suppressing bacterial reproduction, the application of this new antibiotic method
Antibacterial duplex stainless steel material can be caused to be widely used in the Material Fields such as chemical industry, petroleum-based energy, power plant and ocean engineering.
Background technology
With the increasingly raising of people's living standard, fungi-proofing, antibacterial and antiviral administration of health turn into today's society
The problem of extremely paying close attention to, the mode that traditional prevention bacterial micro-organism is propagated is to use bactericide, but it easily makes to natural environment
Into pollution, toxic action, antibacterial functions type metal material has thus been invented.Anti-bacteria stainless steel has 26S Proteasome Structure and Function concurrently as one kind
The antibacterial green material of characteristic, have become the focus for being engaged in bacterial micro-organism research worker concern.Anti-biotic material at present
Research is concentrated mainly on copper-bearing antibacterial stainless steel, and research shows, after cupric stainless steel is by Ageing Treatment, promotes in material matrix
Sufficient amount of copper-rich phase is separated out, so that it is guaranteed that material has good antibacterial effect, but antibacterial Ageing Treatment again can be to material
Other performance have an impact.
Two phase stainless steel under solid solution condition ferrite and austenite because being only made up of so that it has high intensity, excellent
Toughness, good welding performance and brilliance decay resistance, be widely used in petrochemical industry, ocean engineering, paper maker
In the special harsh corrosive environment such as industry, traditional austenitic stainless steel is instead of to a certain extent.Research finds, two phase stainless steel
Bacterial micro-organism in use environment be present, it can cause strong corrosion failure to material so that microbiologic(al) corrosion behavior quilt
Widely pay close attention to.It is therefore desirable to this environment of directed toward bacteria microorganism, there is provided the system of novel antibacterial cupric two-phase stainless Steel material
Preparation Method.
To ensure that cupric two phase stainless steel has good antibacterial action, it is necessary to Ageing Treatment be carried out to it, due to two-phase
The alloying element content such as Cr, Mo and N is higher in stainless steel, causes it to have carbide, nitride and gold in ag(e)ing process
Mutually separated out between category, occurring a small amount of б phases and χ phases in steel will be such that the toughness of steel and plasticity drastically declines, and intensity is significantly raised, makes
Into the brittle fracture of material.Also, the cupric two phase stainless steel after antibacterial Ageing Treatment, due to ε-Cu etc. existing for surface
Rich Cu phases turn into the weak spot in passivating film, easily the forming core source as spot corrosion, cause the corrosion resisting property of material to reduce, and ε-Cu
Separated out in intergranular so that Susceptibility To Intergranular Corrosion increases.
Based on above-mentioned background, if a kind of Technology for Heating Processing of two-phase stainless Steel material can be developed, it is allowed to not only rise
Separated out to carbide, nitride and intermetallic phase is suppressed, and can make material can be to bacterium under solution treatment state
With certain killing action, it will help two phase stainless steel is developed and applied in field of functional materials.
Therefore, the application intends providing a kind of heat treatment method of antibacterial duplex stainless steel material, largely solves
Certain positive role is played in existing issue, the expansion to two-way stainless steel application market.
The content of the invention
It is an object of the invention to provide a kind of heat treatment method of antibacterial duplex stainless steel material, make it at single heat
Can have under reason state and effectively support antibacterial function, significantly reduce the micro- life of bacterium that two phase stainless steel triggers in use
Thing corrosion risk, while the stainless steel material after processing has stable ferrite/austenite two-phase rock-steady structure, can answer extensively
For Material Fields such as chemical industry, petroleum-based energy, power plant and ocean engineerings.
The technical scheme is that：
Solution treatment is selected to the heat treatment mode of antibacterial duplex stainless steel material, solution treatment is for antibacterial two-phase stainless
The change of the volume fraction of ferrite/austenite phase in steel has the function that important.Because copper is in antibacterial duplex stainless steel
Important alloy element, should ensure that in the case of solution treatment, simple substance Cu and its compound can be in matrixes and passivating film circle
At face, and passivating film surface enrichment is present so that the content of Cu elements forms the dense of decline at interface and the surface of passivating film
Gradient difference is spent, improves Cu2+To the diffusion coefficient of solution medium transmission.
Solid solubility temperature and solution time will all have influence on the volume fraction of ferrite/austenite phase, and solid solubility temperature is too low, double
Harmful intermetallic phase can be generated in phase stainless steel, the serious corrosion resisting property for reducing antibacterial duplex stainless steel；Solid solubility temperature is too high,
Ferrite/austenite phase coarse grains can be caused, and cause the volume fraction of ferritic phase not meet ASTM more than 65%
A182 material requirements standard.Under equal solid solubility temperature, in the case that solution time is shorter, Cu atoms can not carry out completely solid
It is molten, and be not in simple substance Cu and its enrichment region of compound in passivating film so that material does not have effective anti-microbial property；With
The extension of solution time, ferrite/austenite phase crystal grain in antibacterial duplex stainless steel is gradually assembled, by original scattered small
Island shape forms bigger island structure, causes coarse grains.Therefore suitable antibacterial heat-treatment system is in the present invention：Solid solution
The temperature of processing is 1050~1250 DEG C, is incubated 5~20 hours, water cooling to room temperature.Preferably Technology for Heating Processing is：Solution treatment
Temperature be 1100~1200 DEG C, be incubated 8~15 hours, water cooling to room temperature.
The antibacterial duplex stainless steel material handled using heat treatment method of the present invention, it is characterised in that：The two-phase is not
Rust steel is two-phase section in the range of 1050~1250 DEG C, and ferrite content is 50%~65%.
The composition of antibacterial duplex stainless steel material of the present invention is, by weight percentage：Cr：18.0-28.0；Ni：
3.0-10.0；Mo：1.0-5.0；Cu：0.5-4.5；N：0.14-0.32；C≤0.03； Si≤1.0；Mn≤3.0；P≤0.03；S
≤0.02；Surplus is Fe.Preferably chemical composition is：Cr：22.0-25.0；Ni：4.5-7.5；Mo：1.5-3.0；Cu：2.0-
4.0；N：0.2-0.3；C≤0.03；Si≤1.0；Mn≤3.0；P≤0.03；S≤0.02；Surplus is Fe.
Therefore, the beneficial effects of the invention are as follows：
1st, the present invention is by optimizing heat treating regime so that antibacterial duplex stainless steel suppresses carbonization in heat treatment process
The precipitation of thing, nitride and intermetallic phase.Material can be made under single solution treatment state simultaneously, so that it may have to bacterium
The killing action of effect, it will help two phase stainless steel is developed and applied in field of functional materials.
2nd, the heat treatment method of antibacterial duplex stainless steel of the present invention, chemical industry, petroleum-based energy, generating be can be widely applied to
The antibacterial functionalized heat treatment of antibacterial duplex stainless steel in factory and ocean engineering.
Brief description of the drawings
The Antibacterial Mechanism figure of Fig. 1 antibacterial duplex stainless steels, wherein a), Ageing Treatment antibacterial duplex stainless steel, b), at solid solution
Manage antibacterial duplex stainless steel.Antibacterial duplex stainless steel from Fig. 1 b as can be seen that after solution treatment, passivating film and material
Simple substance Cu and its compound are uniformly and intimately dispersed with basal body interface, and the content of Cu elements is at interface and the table of passivating film
The concentration gradient that face forms decline is poor, improves Cu2+To the diffusion coefficient of outside Medium Diffusion.
Embodiment
The chemical composition ranges set according to antibacterial duplex stainless steel material, the present invention use 15 kilograms of vaccum sensitive stove smeltings
Embodiment and comparative example each 10 kilograms of antibacterial duplex stainless steel of forging are refined, its chemical composition is shown in Table 1.
The antibacterial duplex stainless steel chemical composition (wt.%) of the embodiment of table 1 and comparative example
The parameter area of the heat treatment method set according to antibacterial duplex stainless steel of the present invention, formulation are consolidated
The detail parameters of solubility temperature and solution time, are shown in Table 2.
The heat treatment process parameter of the embodiment of table 2 and comparative example
1. ferrite/austenite content percentage test
According to " ASTM E562《The test method of counting method measure volume fraction is manually put with system》" relevant criterion rule
Fixed, after heat treatment on steel plate (ASTM A240) or forging (ASTM A182), sampling carries out metallographic structure slice probing, confrontation
The percentage of ferrite/austenite content in bacterium two-phase stainless Steel material is calculated, and the material of same heat (batch) number can be with same
Sample.Sample section should be the structure of balance, and without the second harmful phase, or deposit-free is present on granule boundary.Correlation knot
Fruit is shown in Table 3.
2. in-vitro antibacterial performance detection
According to " JIS Z 2801-2000《Antibacterial fabricated product-antibiotic property test method and antibacterial effect》、GB/
T2591-2003《Anti-biotic material anti-microbial property experimental method and antibacterial effect》" etc. correlation standard, in quantitative test table 1
Antibacterial duplex stainless steel after listed heat treatment is to petroleum-based energy, chemical industry and the common corrosion bacteria of ocean engineering
Sterilizing rate after (M.salsuginis and P.aeruginosa) effect.Anti-microbial property testing result is shown in Table 3, wherein sterilizing rate
Calculation formula is：Sterilizing rate (%)=[(control sample viable count-antibacterial duplex stainless steel viable count)/control sample viable count]
× 100%, control sample viable count is that the viable count after Bacteria Culture is carried out on common two phase stainless steel sample, and antibacterial two-phase is not
Rust steel viable count refers to that the antibacterial duplex stainless steel after heat treatment carries out the viable count after Bacteria Culture.
The embodiment of table 3, the correlated performance test experiments result of comparative example antibacterial duplex stainless steel
From the results shown in Table 3,1-6 of embodiment of the present invention antibacterial duplex stainless steel shows excellent antibacterial
Performance, while also meet requirement of the two phase stainless steel to ferrite/austenite two-phase proportion.Suitable Cu contents and heat treatment
Technique is that antibacterial duplex stainless steel proposed by the present invention can play anti-microbial property and the key of stable two phase structure is presented
Place.
Volume fraction and anti-microbial property of the solution treatment for ferrite/austenite phase in regulation antibacterial duplex stainless steel
There is important balanced action.Solid solubility temperature is too low, and harmful intermetallic phase can be generated in two phase stainless steel, and intermetallic phase is deposited
, and ASTM E562 calculating standard is not met, the volume fraction (comparative example 1-1) of ferrite/austenite can not be calculated.Gu
Solubility temperature is too high, and ferritic volume fraction does not meet ASTM A182 material requirements standard more than 65%, and due to temperature
It is too high to cause coarse grains so that simple substance Cu and its compound can not form enrichment state at passivating film, cause material not have
There is effective anti-microbial property.(comparative example 1-2).Solution time is long, and the ferrite in antibacterial duplex stainless steel/austenite phase is brilliant
Grain gradually aggregation, forms bigger island structure by original scattered island shape, causes coarse grains so that ferritic body
Fraction requires (≤65%) more than in ASTM A182 standards, and because Cu can not be enriched with passivating film so that material is not
With effective antibacterial functions (comparative example 1-3)；Solution time is too short, and Cu atoms can be caused can not to form complete solid solution condition,
And in passivating film be not in simple substance Cu and its enrichment region of compound so that material is (right without effective anti-microbial property
Ratio 3-4).
By above example and comparative example result, only when Cu contents, solid solubility temperature and solution time are certain
OK range in, be complementary to one another between them, cooperate, the antibacterial duplex stainless steel after solution treatment could be caused to have concurrently
Antibacterial functions and stable two phase structure.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, it should all be included within the scope of the present invention.
Claims (3)
- A kind of 1. heat treatment method of antibacterial duplex stainless steel material, it is characterised in that：Antibacterial heat-treatment is solution treatment, solid solution The temperature of processing is 1050~1250 DEG C, is incubated 5~20 hours, water cooling to room temperature, makes material under single solution treatment state, There is effective killing action to bacterium；The composition of the antibacterial duplex stainless steel material is, by weight percentage：Cr：18.0-28.0；Ni：3.0-10.0； Mo：1.0-5.0；Cu：0.5-4.5；N：0.14-0.32；C≤0.03；Si≤1.0；Mn≤3.0；P≤0.03；S≤0.02；It is remaining Measure as Fe.
- 2. according to the heat treatment method of antibacterial duplex stainless steel material described in claim 1, it is characterised in that：Preferably at solid solution The temperature of reason is 1100~1200 DEG C, is incubated 8~15 hours, water cooling to room temperature.
- A kind of 3. antibacterial duplex stainless steel material handled using heat treatment method described in claim 1, it is characterised in that：This pair Phase stainless steel is two-phase section in the range of 1050~1250 DEG C, and ferrite content is 50%~65%.
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| CN106901605A (en) * | 2017-02-14 | 2017-06-30 | 美的集团股份有限公司 | Filter screen and the kettle with the filter screen have |
| CN107881413B (en) * | 2017-10-18 | 2019-06-11 | 江苏理工学院 | A kind of antibacterial duplex stainless steel and its processing technology |
| CN111593269A (en) * | 2020-05-26 | 2020-08-28 | 上海大学 | Antimicrobial adhesion seawater corrosion resistant duplex stainless steel for ship pump valve and preparation method and application thereof |
| CN114107631A (en) * | 2021-11-15 | 2022-03-01 | 成都先进金属材料产业技术研究院股份有限公司 | Ferrite-austenite duplex stainless steel heat treatment method |
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| CN1154419A (en) * | 1996-10-14 | 1997-07-16 | 冶金工业部钢铁研究总院 | ultra hypoeutectoid, diphasic stainless steel, and prodn. method thereof |
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| CN101289726A (en) * | 2007-04-20 | 2008-10-22 | 宝山钢铁股份有限公司 | Biphase antibiotic stainless steel and method for making same |
| CN102191440A (en) * | 2011-06-01 | 2011-09-21 | 上海大学 | Economical antibacterial duplex stainless steel and preparation method thereof |
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