CN106834963B - A kind of anti-bacteria stainless steel and preparation method thereof - Google Patents
A kind of anti-bacteria stainless steel and preparation method thereof Download PDFInfo
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- CN106834963B CN106834963B CN201611164522.0A CN201611164522A CN106834963B CN 106834963 B CN106834963 B CN 106834963B CN 201611164522 A CN201611164522 A CN 201611164522A CN 106834963 B CN106834963 B CN 106834963B
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- stainless steel
- molten iron
- ferrite powder
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- bacteria stainless
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 27
- 239000010935 stainless steel Substances 0.000 title claims abstract description 25
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 12
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 11
- 229910052738 indium Inorganic materials 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 47
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000002147 killing effect Effects 0.000 abstract description 2
- 244000052769 pathogen Species 0.000 abstract description 2
- 230000001717 pathogenic effect Effects 0.000 abstract description 2
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 description 16
- 239000007789 gas Substances 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 4
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 4
- 241000194017 Streptococcus Species 0.000 description 4
- 241000588769 Proteus <enterobacteria> Species 0.000 description 3
- 241000191940 Staphylococcus Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 239000002054 inoculum Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 241001037822 Bacillus bacterium Species 0.000 description 1
- 241001478240 Coccus Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The present invention relates to a kind of stainless steels, and in particular to for a kind of anti-bacteria stainless steel and preparation method thereof.Its chemical composition and weight percent are：C：0.04 0.05%, Si：0.3 0.5%, Al：0.003 0.06%, Cr：20 22%, Mn：10 12%, P：0.01 0.03%, Cu：0.2 0.25%, N：0.18%~0.20%, strontium ferrite powder：0.2‑0.5%、In：0.01‑0.015%、Er：0.006 0.008%, surplus Fe, the prepared stainless steel of the present invention have human body common pathogen extremely strong inhibitory or killing effect, and the stainless steel product cast can be widely applied to medical device industry.
Description
Technical field
The present invention relates to a kind of stainless steels, and in particular to for a kind of anti-bacteria stainless steel and preparation method thereof.
Background technology
Produce cooking apparatus, medical instrument, toilet articles for use and carrying out keep a public place clean finishing when, people expect always can
Antibacterial and the metal new material appearance of energy moulding.Have both the new material of structure and functional characteristic --- anti-bacteria stainless steel existing structure
The mechanical property of material, and the performances such as the physics of functional material, chemistry, its stainless steel as have like that as component
Decoration and beautification function, while also antibacterial, sterilization automatic cleaning action.
Data shows that now widely used antiseptic is mainly two class of organic antibacterial agent and inorganic antiseptic.It is organic anti-
Microbial inoculum is with a long history, is widely applied in medical field, is mainly used with sprinkling or immersion way.But they are in safety
Property, it is insufficient in terms of persistence, broad spectrum antibacterial, heat resistance, especially have serious damage to human body and environment, many occasions without
Method uses.Cloth with antibacterial action, plastic products, activated carbon, health is made primarily as additive in inorganic antiseptic
Ceramics etc., use scope is increasingly extensive.But in terms of heat-resisting, wear-resisting, against corrosion, intensity and mouldability, it cannot meet many daily
Use demand.Therefore, manufacture galley machine, medical instrument, toilet articles for use and carrying out keep a public place clean finishing when, it is necessary to using having
Antibacterial action and different, good appearance metal product.The stainless steel with antibacterial and bacteriostasis of this new birth, nothing
It is suspected to be the in the eyes of ideal product of people.
Invention content
To solve the disadvantage that existing stainless steel plate exists, the purpose of the present invention is to provide a kind of anti-bacteria stainless steel and its systems
Make method.
The technical solution adopted by the present invention is a kind of anti-bacteria stainless steel, and chemical composition and weight percent are：
C：0.04-0.05%, Si：0.3-0.5%, Al：0.003-0.06%, Cr：20-22%, Mn：10-12%, P：0.01-
0.03%, Cu：0.2-0.25%, N：0.18%~0.20%, strontium-ferrite powder：0.2-0.5%、In：0.01-0.015%、
Er：0.006-0.008%, surplus Fe.
Preferably, chemical composition and weight percent are：
C：0.032%, Si：0.4%, Al：0.005%, Cr：21%, Mn：11%, P：0.015%, Cu：0.21%, N：0.19%,
Strontium-ferrite powder：0.4%、In：0.013%、Er：0.0066%, surplus Fe.
When making, by iron in antivacuum stove heating and melting, when molten iron temperature rises to 1300-1400 DEG C, to vacuum drying oven
In be passed through mixing H2O gases, H2O gas intakes are the 1/80 of molten iron volume, and ventilation terminates, after keeping the temperature 3 hours, into molten iron
C, Al, P, Cu, strontium-ferrite powder is added, continues to heat molten iron, is warming up to 1800 DEG C, isothermal holding 30-40 minutes, Xiang Tie
Si, Cr, Mn, N are added in water, is warming up to 2000-2200 DEG C, Er, In is added and keeps the temperature 8 hours, is poured.
Advantageous effect of the present invention is, the prepared stainless steel of the present invention to human body common pathogen such as：Staphylococcus,
Streptococcus, Escherichia coli, Pseudomonas aeruginosa, proteus, Non-sporing anaerobes have extremely strong inhibitory or killing effect, and that casts is stainless
Steel product can be widely applied to medical device industry；
Wherein, the present invention realizes stainless steel bacteriostasis property by adding strontium-ferrite powder into stainless composition of steel, leads to
It crosses and adds In, Er into stainless composition of steel to accelerate the antibacterial rate of stainless steel；
Wherein, the present invention when molten iron temperature rises to 1300-1400 DEG C, is passed through mixed in specific make into vacuum drying oven
Close H2O gases and isothermal holding, can significantly reduce impurity content in molten iron, and then improve casting stainless steel end properties,
It ventilates and after isothermal holding, the silicon mass fraction in molten iron is in 0.3-0.37%, relative to obstructed H2The direct isothermal holding of O gases
Obtained molten iron silicon content reduces 2.04 times or more；Manganese mass fraction is in 0.2-0.25%, relative to obstructed H2O gases are direct
The molten iron manganese content that isothermal holding obtains reduces 1.68 times or more；Phosphorus mass fraction is less than 0.013%, relative to obstructed H2O gas
The molten iron phosphorus content that the direct isothermal holding of body obtains reduces 3.33 times or more；Sulfur nutrient is less than 0.016%, relative to not
Logical H2The molten steel sulfur content that the direct isothermal holding of O gases obtains reduces 3.51 times or more.
Specific implementation mode
Embodiment 1：
A kind of anti-bacteria stainless steel, chemical composition and weight percent are：
C：0.032%, Si：0.4%, Al：0.005%, Cr：21%, Mn：11%, P：0.015%, Cu：0.21%, N：0.19%,
Strontium-ferrite powder：0.4%、In：0.013%、Er：0.0066%, surplus Fe.
When making, by iron, heating and melting is passed through when molten iron temperature rises to 1300 DEG C into vacuum drying oven in antivacuum stove
Mix H2O gases, H2O gas intakes be molten iron volume 1/80, ventilation terminates, heat preservation 3 hours after, into molten iron be added C,
Al, P, Cu, strontium-ferrite powder continue to heat molten iron, are warming up to 1800 DEG C, isothermal holding 30 minutes is added into molten iron
Si, Cr, Mn, N are warming up to 2000 DEG C, and Er, In is added and keeps the temperature 8 hours, is poured.
Following table is five samples, and the content of chemical element is as follows in each sample：
| Formula | C | Si | Al | Cr | Mn | P | Cu | N | Strontium-ferrite powder | In | Er | Iron |
| Sample 1 | 0.032% | 0.4% | 0.005% | 21% | 11% | 0.015% | 0.21% | 0.19% | It is free of | It is free of | It is free of | Surplus |
| Sample 2 | 0.032% | 0.4% | 0.005% | 21% | 11% | 0.015% | 0.21% | 0.19% | 0.4% | 0.013% | 0.0066% | Surplus |
| Sample 3 | 0.032% | 0.4% | 0.005% | 21% | 11% | 0.015% | 0.21% | 0.19% | 0.4% | It is free of | It is free of | Surplus |
| Sample 4 | 0.032% | 0.4% | 0.005% | 21% | 11% | 0.015% | 0.21% | 0.19% | It is free of | 0.013% | 0.0066% | Surplus |
To sample 1-5, anti-biotic material, the i.e. blocky sample of 20 × 5mm of Φ is made by 1 step of embodiment, sample is passed through
After high-temperature sterilization, inoculum density is 1 × 10 respectively5The standard E. coli bacterium solution of cfu/ml, 1 × 105The standard glucose of cfu/ml
Coccus bacterium solution, 1 × 105The standard Pseudomonas aeruginosa bacterium solution of cfu/ml, 1 × 105The standard streptococcus bacterium solution of cfu/ml, 1 ×
105The standard transformations bacillus bacterium solution of cfu/ml, 1 × 105The standard Non-sporing anaerobes bacterium solution of cfu/ml, is placed at normal temperatures, system
Each group sample sterilizing rate is counted,
Bacterium number when bacterium number/inoculation when bacterium number-statistics when sterilizing rate=inoculation.
Statistical result see the table below 1：
| Group | Escherichia coli sterilizing rate（%）/ kill The bacterium time（h） | Staphylococcus sterilizing rate（%）/ sterilization Time（h） | Pseudomonas aeruginosa sterilizing rate（%）/ sterilization Time（h） | Streptococcus sterilizing rate（%）/ sterilization Time（h） | Proteus sterilizing rate（%）/ sterilization Time（h） | Non-sporing anaerobes sterilizing rate（%）/ kill The bacterium time（h） |
| Sample 1 | 0/- | 0/- | 0/- | 0/- | 0/- | 0/- |
| Sample 2 | 100/0.1 | 100/0.05 | 100/0.3 | 100/0.02 | 100/0.04 | 100/0.01 |
| Sample 3 | 100/0.5 | 100/0.8 | 100/0.5 | 100/0.5 | 100/0.3 | 100/0.1 |
| Sample 4 | 30/0.2 | 10/0.5 | 22/0.3 | 15/0.1 | 12/0.4 | 10/0.1 |
By upper table 1 as can be seen that the obtained stainless steel test specimen of the present invention can effectively kill Escherichia coli, staphylococcus,
Pseudomonas aeruginosa, streptococcus, proteus, Non-sporing anaerobes, and sterilization speed is very fast, by upper table as can be seen that the present invention
Strontium-ferrite powder is added in making stainless steel raw material makes stainless steel have bactericidal effect；It can be effective by the way that In, Er is added
Shorten stainless steel sterilizing time.
Claims (3)
1. a kind of anti-bacteria stainless steel, which is characterized in that its chemical composition and weight percent are：
C：0.04-0.05%, Si：0.3-0.5%, Al：0.003-0.06%, Cr：20-22%, Mn：10-12%, P：0.01-
0.03%, Cu：0.2-0.25%, N：0.18%~0.20%, strontium-ferrite powder：0.2-0.5%、In：0.01-0.015%、
Er：0.006-0.008%, surplus Fe.
2. a kind of anti-bacteria stainless steel according to claim 1, which is characterized in that its chemical composition and weight percent are：
C：0.032%, Si：0.4%, Al：0.005%, Cr：21%, Mn：11%, P：0.015%, Cu：0.21%, N：0.19%, strontium-
Ferrite powder：0.4%、In：0.013%、Er：0.0066%, surplus Fe.
3. a kind of production method of anti-bacteria stainless steel described in claim 1, which is characterized in that
By iron, heating and melting is passed through mixing H into vacuum drying oven when molten iron temperature rises to 1300-1400 DEG C in antivacuum stove2O
Gas, H2O gas intakes are the 1/80 of molten iron volume, and ventilation terminates, and C, Al, P, Cu, strontium-ferrite powder are added into molten iron
Body continues to heat molten iron, is warming up to 1800 DEG C, and Si, Cr, Mn, N are added into molten iron, is warming up to for isothermal holding 30-40 minutes
2000-2200 DEG C, Er, In is added and keeps the temperature 8 hours, casts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611164522.0A CN106834963B (en) | 2016-12-16 | 2016-12-16 | A kind of anti-bacteria stainless steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611164522.0A CN106834963B (en) | 2016-12-16 | 2016-12-16 | A kind of anti-bacteria stainless steel and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106834963A CN106834963A (en) | 2017-06-13 |
| CN106834963B true CN106834963B (en) | 2018-08-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914344A (en) * | 2004-01-29 | 2007-02-14 | 杰富意钢铁株式会社 | Austenitic-ferritic stainless steel with excellent formability |
| CN103154291A (en) * | 2010-09-29 | 2013-06-12 | 新日铁住金不锈钢株式会社 | Austenite high-manganese stainless steel, manufacturing method therefor, and member using said steel |
| CN104471092A (en) * | 2012-03-09 | 2015-03-25 | 新日铁住金不锈钢株式会社 | Ferrite-austenite 2-phase stainless steel plate having low in-plane anisotropy and method for producing same |
| CN105121688A (en) * | 2012-12-19 | 2015-12-02 | 材料开发中心股份公司 | Austenitic twip stainless steel, its production and use |
| CN105925916A (en) * | 2016-06-24 | 2016-09-07 | 东北大学 | Method for calcium and aluminum nitrogen increase and deoxygenation in pressurized electroslag remelting process of high-nitrogen steel |
-
2016
- 2016-12-16 CN CN201611164522.0A patent/CN106834963B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914344A (en) * | 2004-01-29 | 2007-02-14 | 杰富意钢铁株式会社 | Austenitic-ferritic stainless steel with excellent formability |
| CN103154291A (en) * | 2010-09-29 | 2013-06-12 | 新日铁住金不锈钢株式会社 | Austenite high-manganese stainless steel, manufacturing method therefor, and member using said steel |
| CN104471092A (en) * | 2012-03-09 | 2015-03-25 | 新日铁住金不锈钢株式会社 | Ferrite-austenite 2-phase stainless steel plate having low in-plane anisotropy and method for producing same |
| CN105121688A (en) * | 2012-12-19 | 2015-12-02 | 材料开发中心股份公司 | Austenitic twip stainless steel, its production and use |
| CN105925916A (en) * | 2016-06-24 | 2016-09-07 | 东北大学 | Method for calcium and aluminum nitrogen increase and deoxygenation in pressurized electroslag remelting process of high-nitrogen steel |
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Effective date of registration: 20240612 Address after: Factory Building 3, Suyin Industrial Park, No. 29 Chanwang Street, Xingqing District, Yinchuan City, Ningxia Hui Autonomous Region, 750000 Patentee after: Ningxia Womeida Biomedical Technology Co.,Ltd. Country or region after: China Address before: 242300 Wanggang Road, Port Town, Ningguo City, Xuancheng City, Anhui Province Patentee before: ANHUI BAOHENG ADVANCED MATERIAL TECHNOLOGY CO.,LTD. Country or region before: China |