CN105779902A - Silver-containing anti-bacteria duplex stainless steel and preparing method thereof - Google Patents
Silver-containing anti-bacteria duplex stainless steel and preparing method thereof Download PDFInfo
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- CN105779902A CN105779902A CN201610152143.3A CN201610152143A CN105779902A CN 105779902 A CN105779902 A CN 105779902A CN 201610152143 A CN201610152143 A CN 201610152143A CN 105779902 A CN105779902 A CN 105779902A
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- stainless steel
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- phase stainless
- antibacterial
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- 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
- C22C38/007—Ferrous alloys, e.g. steel alloys containing silver
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses silver-containing anti-bacteria duplex stainless steel and a preparing method thereof. The silver-containing anti-bacteria duplex stainless steel comprises, by mass percent, smaller than or equal to 0.04% of C, smaller than or equal to 1.0% of Si, smaller than or equal to 1.0% of Mn, 4.75%-6.0% of Ni, 24.5%-26.5% of Cr, 1.7%-2.25% of Mo, smaller than 0.04% of S and P, 2.75%-3.25% of Cu, 0.05%-0.1% of Ag and the balance iron. When materials are smelted and poured, the problem that silver cannot be evenly distributed in tissue can be solved by adding Cu-Ag alloy particles and adopting a suspension casting method, the mass of added Ag is reduced on the basis that the excellent anti-bacteria performance of the materials is effectively guaranteed, cost saving is well facilitated, and the escherichia coli and staphylococcus aureus resistant effect can reach 99.9%. In addition, anti-bacteria ageing treatment is not needed for the materials, the effects of saving energy and saving time are achieved, and meanwhile reduction of material corrosion resisting performance due to anti-bacteria ageing treatment can be avoided.
Description
Technical field
The invention belongs to technical field of metal, be specifically related to a kind of silver-containing antibacterial two phase stainless steel and preparation side thereof
Method.
Background technology
The microorganism moment ubiquitous in life invades and harasses people, harmful bacteria and virus infection event and happens occasionally,
The health of the mankind in serious threat, brings great potential safety hazard to social development.Along with carrying of social development and living standard
Height, the health consciousness of people improves constantly, and the requirement to its own existence environment is more and more higher.The most effectively control and disappear
Go out harmful bacteria and the growth of virus and breeding, become the problem that society is extremely paid close attention to.Traditional antibacterial, sterilization means master
If use bactericide, but the excessive use of bactericide easily makes bacterial resistance occurred, and cause environmental pollution.Based on this, people
Gradually sight is invested and self has on the anti-biotic material of bacteria resistance function and environmental protection, such as antibiotic plastic, anti-bacteria ceramic, anti-
Bacterium metal etc..
Antibacterial metallic materials is one of important directions of anti-biotic material research, and wherein anti-bacteria stainless steel material is good because having
Combination property obtain better attention rate.It is most widely antibacterial stainless containing Cu for studying in anti-bacteria stainless steel material at present
Steel, it needs to carry out antibacterial heat-treatment makes tissue separate out rich Cu phase (ε-Cu phase) the antibacterial effect of competence exertion with antibacterial action
Really, but the precipitation of ε-Cu phase can reduce stainless corrosion resistance.The antibacterial effect of metal Ag is better than Cu, only need to add in stainless steel
Add a small amount of Ag and just can play good antibacterial effect, and contain in Ag anti-bacteria stainless steel production process without special antibacterial hot at
Science and engineering skill just can ensure that its antibacterial effect, and this has advantage at aspects such as minimizing operation and reduction energy consumptions.
The anti-bacteria stainless steel containing Ag of existing exploitation is many with ferritic stainless steel, austenitic stainless steel and martensitic stain less steel is
Main, and the most rare about the research and development containing Ag antibacterial duplex stainless steel.Two phase stainless steel (Duplex Stainless
Steel, is called for short DSS) tissue by ferrite (α) and austenite (γ) phase composition, have ferritic stainless steel and austenite concurrently not
The advantage of rust steel, therefore invention Ag antibacterial duplex stainless steel and preparation method thereof is the most meaningful.If material directly adds Ag
Although antibacterial effect also can be played, but cause needing Gao Yinliang because there is the nonunf ormity of silver.By adding Cu-Ag alloy
Particle also uses Suspending Cast method, can solve a uniformity difficult problem for silver distribution, thus ensure material excellent antibacterial effect
On the basis of reduce Ag content addition, this is to cost-effective highly beneficial.
Summary of the invention
It is an object of the invention to provide a kind of silver-containing antibacterial two phase stainless steel and preparation method thereof, by adding Cu-Ag
Alloying pellet also uses Suspending Cast method, can solve a uniformity difficult problem for silver distribution, thus ensure material excellent antibacterial effect
Reducing the addition of Ag content on the basis of Guo, this is to cost-effective highly beneficial, anti-Escherichia coli and staphylococcus aureus effect
Fruit reaches 99.9%.Additionally, material is not required to antibacterial Ageing Treatment, play effect during energy-saving, the most also will not be because of antibacterial timeliness at
Reason reduces the corrosion resisting property of material.
For achieving the above object, the present invention adopts the following technical scheme that
Composition and the mass percent thereof of a kind of silver-containing antibacterial two phase stainless steel be: C≤0.04%；Si≤1.0%；Mn≤1.0%；
Ni:4.75% ~ 6.0%；Cr:24.5% ~ 26.5%；Mo:1.7% ~ 2.25%；S, P: < 0.04%；Cu:2.75% ~ 3.25%, Ag:
0.05%-0.1%, remainder is iron.
The preparation method of a kind of silver-containing antibacterial two phase stainless steel described above comprises the following steps:
(1) melting silver-containing antibacterial two phase stainless steel material requested and mass fraction thereof are: 316L stainless steel 60-65%, the amount containing molybdenum are big
Crome metal 12-15%, fine copper 1.5-2.2%, Cu-Ag alloying pellet that molybdenum-iron 0.4-0.8% in 60%, chrome content are more than 99%
1.3-2%, remaining is ingot iron；The mass fraction sum of described material is 100%；The preparation of described Cu-Ag alloying pellet
Method is: melting Cu-Ag alloy on conventional induction furnace, and the mass ratio of copper silver is 19:1；Atomising device system is used after fusing is good
Standby Cu-Ag alloying pellet, particle size controls between 100-300um；
(2) first 316L stainless steel material is melted, be sequentially added into ingot iron, molybdenum-iron, crome metal and fine copper；When temperature reaches
During to 1600-1610 DEG C, adding silico-calcium manganese and carry out deoxidation, addition is the 0.3% of gross mass；Then skim thermometric, tapping temperature
Do not exceed 1620 DEG C；During cast, allow Cu-Ag alloying pellet enter die cavity along liquid flow, form Suspending Cast；
(3) through 1100 DEG C of solution treatment 2h after pouring cast part cooling.
In conventional induction furnace during melting, all material enters stokehold all to be needed to carry out oil removing, rust cleaning and degassing processing, it is ensured that dry
Clean dry.
The described anti-Escherichia coli of silver-containing antibacterial two phase stainless steel and staphylococcus aureus effect reach 99.9%.
The beneficial effects of the present invention is: the present invention is by adding Cu-Ag alloying pellet and using Suspending Cast method, energy
Solve a uniformity difficult problem for silver distribution, thus on the basis of ensureing material excellent antibacterial effect, reduce the addition of Ag content, this
To cost-effective highly beneficial, anti-Escherichia coli and staphylococcus aureus effect reach 99.9%.During additionally, material is not required to antibacterial
Effect processes, and plays effect during energy-saving, the most also will not cause the reduction of material corrosion resisting property because of antibacterial Ageing Treatment.
Detailed description of the invention
By embodiment, the present invention is described in more detail below.These embodiments are only embodiment party optimal to the present invention
The description of formula, does not have any restriction to the scope of the present invention.
Embodiment: use intermediate frequency furnace melting molten steel, be cast in investment shell by Suspending Cast mode and pour into
Coupon, clears up after cooling, then intercepts coupon and is processed into the coupon of Φ 22 × 220mm.
The chemical composition of silver-containing antibacterial two-phase of the present invention be shown in Table 1 and heat treatment mode be shown in Table 2.(embodiment 1 and 2 is
The argentiferous two phase stainless steel prepared by Suspending Cast, comparative example 1 is directly to add argentiferous two phase stainless steel prepared by fine silver, contrast
Example 2 is to be not added with the two phase stainless steel of silver, and comparative example 3 is 316L stainless steel.)
The different example material chemical composition of table 1
Note: remaining as Fe.
Embodiment is as shown in table 2 with comparative example processing mode.
Table 2 solution treatment mode
Use typical peritonaeum method, with reference to Japanese antibacterial association JISZ280 examination criteria, detect three kinds of samples to Escherichia coli,
The antibacterial effect of staphylococcus aureus, the results are shown in Table 3.
Table 3 antibacterial effect contrast table
As can be seen from the above embodiments, the silver-containing antibacterial two phase stainless steel that the present invention is prepared based on Suspending Cast only needs less
Silver content just can reach excellent antibacterial effect.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (4)
1. a silver-containing antibacterial two phase stainless steel, it is characterised in that: the composition of this material and mass percent thereof be: C≤
0.04%；Si≤1.0%；Mn≤1.0%；Ni:4.75% ~ 6.0%；Cr:24.5% ~ 26.5%；Mo:1.7% ~ 2.25%；S, P: <
0.04%；Cu:2.75% ~ 3.25%；Ag:0.05%-0.1%, remainder is iron.
2. prepare silver-containing antibacterial two phase stainless steel as claimed in claim 1 for one kind, it is characterised in that: specifically include following step
Rapid:
(1) melting silver-containing antibacterial two phase stainless steel material requested and mass fraction thereof are: 316L stainless steel 60-65%, the amount containing molybdenum are big
Crome metal 12-15%, fine copper 1.5-2.2%, Cu-Ag alloying pellet that molybdenum-iron 0.4-0.8% in 60%, chrome content are more than 99%
1.3-2%, remaining is ingot iron；The mass fraction sum of described material is 100%；The preparation of described Cu-Ag alloying pellet
Method is: melting Cu-Ag alloy on conventional induction furnace, and the mass ratio of copper silver is 19:1；Atomising device system is used after fusing is good
Standby Cu-Ag alloying pellet, particle size controls between 100-300um；
(2) first 316L stainless steel material is melted, be sequentially added into ingot iron, molybdenum-iron, crome metal and fine copper；When temperature reaches
During to 1600-1610 DEG C, adding silico-calcium manganese and carry out deoxidation, addition is the 0.3% of gross mass；Then skim thermometric, tapping temperature
Do not exceed 1620 DEG C；During cast, allow Cu-Ag alloying pellet enter die cavity along liquid flow, form Suspending Cast；
(3) through 1100 DEG C of solution treatment 2h after pouring cast part cooling.
The preparation method of a kind of silver-containing antibacterial two phase stainless steel the most according to claim 2, it is characterised in that: in routine sense
When answering melting in stove, all material enters stokehold all to be needed to carry out oil removing, rust cleaning and degassing processing, it is ensured that be totally dried.
4. the application of a silver-containing antibacterial two phase stainless steel as claimed in claim 1, it is characterised in that: described silver-containing antibacterial
The anti-Escherichia coli of two phase stainless steel and staphylococcus aureus effect reach 99.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152143.3A CN105779902A (en) | 2016-03-17 | 2016-03-17 | Silver-containing anti-bacteria duplex stainless steel and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152143.3A CN105779902A (en) | 2016-03-17 | 2016-03-17 | Silver-containing anti-bacteria duplex stainless steel and preparing method thereof |
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| CN105779902A true CN105779902A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610152143.3A Pending CN105779902A (en) | 2016-03-17 | 2016-03-17 | Silver-containing anti-bacteria duplex stainless steel and preparing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881413A (en) * | 2017-10-18 | 2018-04-06 | 江苏理工学院 | A kind of antibacterial duplex stainless steel and its processing technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664154A (en) * | 2005-03-24 | 2005-09-07 | 刘文西 | Antibacterial austenitic stainless steel |
| CN101029375A (en) * | 2007-03-29 | 2007-09-05 | 上海大学 | Austenic steel antibacterial stainless steel |
| CN102676943A (en) * | 2012-06-15 | 2012-09-19 | 福州大学 | Copper bearing antimicrobial duplex stainless steel and preparation method thereof |
-
2016
- 2016-03-17 CN CN201610152143.3A patent/CN105779902A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664154A (en) * | 2005-03-24 | 2005-09-07 | 刘文西 | Antibacterial austenitic stainless steel |
| CN101029375A (en) * | 2007-03-29 | 2007-09-05 | 上海大学 | Austenic steel antibacterial stainless steel |
| CN102676943A (en) * | 2012-06-15 | 2012-09-19 | 福州大学 | Copper bearing antimicrobial duplex stainless steel and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 向红亮等: "含Ag抗菌双相不锈钢组织及抗菌性能研究", 《金属学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107881413A (en) * | 2017-10-18 | 2018-04-06 | 江苏理工学院 | A kind of antibacterial duplex stainless steel and its processing technology |
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Application publication date: 20160720 |