CN106011688B - High Mn content Fe-Cr-Ni alloy and its manufacturing method - Google Patents
High Mn content Fe-Cr-Ni alloy and its manufacturing method Download PDFInfo
- Publication number
- CN106011688B CN106011688B CN201610174969.XA CN201610174969A CN106011688B CN 106011688 B CN106011688 B CN 106011688B CN 201610174969 A CN201610174969 A CN 201610174969A CN 106011688 B CN106011688 B CN 106011688B
- Authority
- CN
- China
- Prior art keywords
- less
- mgo
- alloy
- content
- cao
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000990 Ni alloy Inorganic materials 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 73
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 69
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 69
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 44
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 37
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 32
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 31
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 31
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 31
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 31
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims abstract description 26
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims description 32
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 239000010436 fluorite Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 238000005261 decarburization Methods 0.000 claims description 3
- -1 be C:0.2% or less Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 239000011572 manganese Substances 0.000 description 57
- 230000007547 defect Effects 0.000 description 34
- 239000010813 municipal solid waste Substances 0.000 description 28
- 229910000831 Steel Inorganic materials 0.000 description 25
- 239000010959 steel Substances 0.000 description 25
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 239000012467 final product Substances 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 239000004615 ingredient Substances 0.000 description 8
- 238000004220 aggregation Methods 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000006104 solid solution Substances 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910005347 FeSi Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000013441 quality evaluation Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000000007 visual effect Effects 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
- C22C38/40—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
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention provides a kind of high Mn content Fe-Cr-Ni alloys that surface texture is excellent, while providing the method for being manufactured inexpensively the alloy using common apparatus.High Mn content Fe-Cr-Ni alloy is the alloy that C:0.2% or less, Si:0.1-1%, Mn:4-20%, S:0.01% or less, Ni:25% or less, Cr:25% or less, Al:0.001-0.1% or less, Mg:0.0001-0.01%, Ca:0.0001-0.01%, O:0.0005-0.01%, surplus are made of Fe and inevitable impurity, and non-metallic inclusion contained in the alloy includes MgO, MgOAl2O3、CaO·SiO2·MgO·Al2O3It is one or more of oxide, the MgOAl2O350% or less is calculated as according to number ratio.
Description
Technical field
The present invention relates to a kind of high Mn content Fe-Cr-Ni alloys having excellent surface quality.The invention further relates to high Mn
The method of refining of content F e-Cr-Ni alloy is related to inhibiting in molten steel by the micro constitutent in control slag composition and molten steel
The generation that dysgenic non-metallic inclusion is generated to surface quality manufactures the high Mn content Fe-Cr-Ni having excellent surface quality
The technology of alloy.
Background technique
It is that there is excellent corrosion resistance by the Fe-Cr-Ni alloy of representative of SUS304, by further adding alloy member
Element can make it have the excellent alloy of various characteristics.For example, Mn because being the effective element of deoxidation, closes Fe-Cr-Ni
It is the element universally used for gold, but if containing 4% or more, then improves the solid solubility of N, steel can be made to harden, or
Even if imposing high intensity cold processing, can also keep non magnetic.Therefore, high Mn content Fe-Cr-Ni alloy is used for electronic equipment portion
The purposes such as part or dress ornament metal parts, chemical plant.But high Mn content Fe-Cr-Ni alloy is because of non-metallic inclusion,
The problems such as in the presence of processing crackle or surface defect is generated.
About the manufacturing method of this high Mn content Fe-Cr-Ni alloy, controls inclusion morphology and pass through common ingot casting method
The technology cast is disclosed in Japanese Patent Open Publication (special open 2002-146429) etc..The bulletin suggestion is in high Mn
In content F e-Cr-Ni alloy, deoxidation is carried out using Al, makes oxygen concentration 35ppm hereinafter, being MnO by Control and Inclusion Removal
SiO2·Cr2O3·Al2O3It is field trash.
But MnOSiO2·Cr2O3·Al2O3It is that field trash induces MnO and Cr sometimes2O3Aggtegation, formed
Large Inclusions have the tendency that finally causing surface defect on plate product, are consequently belonging to the field trash that must be avoided.
Further, control non-metallic inclusion form discloses to improve surface texture, corrosion resistance, the method for weldability
In special open 2004-149833 bulletin and special open 2004-149830 bulletin.But these technologies, which can be adapted for manganese, to be contained
Amount is 3% stainless steel below, but is not applied for high Mn content Fe-Cr-Ni alloy.
Summary of the invention
As previously mentioned, method according to prior art, is difficult to inhibit MnOSiO2·Cr2O3·Al2O3It is the life of field trash
At, and manufacture the excellent high Mn content Fe-Cr-Ni alloy of surface texture.It is excellent that the object of the present invention is to provide surface textures
High Mn content Fe-Cr-Ni alloy, while providing the method for being manufactured inexpensively the alloy using general equipment.
The present inventor has carried out diligent research to solve foregoing problems.Firstly, the present inventor couple
It is investigated at the surface defect position of high Mn content Fe-Cr-Ni alloy.That is, observing surface defect position with SEM, it is determined that
Impurity as surface defect starting point forms.As a result, the main body of the impurity detected from surface defect is coarse MnO
SiO2·Cr2O3·Al2O3It is oxide and MgOAl2O3Oxide.Institute in these oxides and the product of generation surface defect
The non-metallic inclusion ingredient contained is identical.Therefore, the generation of surface defect in order to prevent is obtained, it is necessary to inhibit MnO
SiO2·Cr2O3·Al2O3It is field trash and MgOAl2O3It is that field trash generates this objective.
Further progress research has been found out by the inclusion of (Mg, Mn) O, (Mg, Mn) OAl2O3、CaO·SiO2·MgO·
Al2O3It is one or more of oxide, makes (Mg, Mn) OAl2O3If being calculated as 50% or less according to number ratio,
It is prevented that surface defect.Here, MgOAl2O3The tendency that oxide buildup forms Large Inclusions is stronger, but also finds out
Control it as (Mg, Mn) OAl2O3The tendency is weaker when being.Here, containing represented by this bracket as shown in (Mg, Mn) O
Justice is to form solid solution relative to the MgO as principal component, MnO.(Mg,Mn)O·Al2O3It is also equally, to be meant that opposite
In the MgOAl as principal component2O3, MnOAl2O3Form solid solution.
Then, the present inventor's probe surface defect occurs that whether there is or not the correlation with operating condition.
As a result, specifying that it is necessary to control the micro constitutent in alloy in Si:0.1-1%, Al:0.001-0.1% or less, Mg:
The range of 0.0001-0.01%, Ca:0.0001-0.01%, O:0.0005-0.01%.
That is, the present invention relates to high Mn content Fe-Cr-Ni alloy, be C:0.2% or less, Si:0.1-1%, Mn:4-20%,
S:0.01% or less, Ni:25% or less, Cr:25% or less, Al:0.001-0.1% or less, Mg:0.0001-0.01%, Ca:
The alloy that 0.0001-0.01%, O:0.0005-0.01%, surplus are made of Fe and inevitable impurity, contained in the alloy
Non-metallic inclusion includes MgO, MgOAl2O3、CaO·SiO2·MgO·Al2O3It is one or more of oxide,
MgO·Al2O350% or less is calculated as according to number ratio.
In addition, Mo:3% or less, Cu:3% or less, N:0.4% or less can also be contained other than the ingredient of above-mentioned record
One or more of.
Further, above-mentioned MgO is also possible to be dissolved made of MnO (Mg, Mn) O, above-mentioned MgO in principal component MgO
Al2O3It is also possible to principal component MgOAl2O3In be dissolved MnOAl2O3Made of (Mg, Mn) OAl2O3。
Further, in non-metallic inclusion, the preferred MgO:95% or more of (Mg, Mn) O, MnO:5% are hereinafter, (Mg, Mn) O
Al2O3It is preferred that MgO:10-40%, MnO:0.1-3%, Al2O3: 60-90%, CaOSiO2·MgO·Al2O3It is that oxide is preferred
CaO:20-60%, SiO2:10-40%、Al2O3: 40% or less, MgO:40% or less.
Present invention provides the manufacturing methods of the alloy.That is, in electric furnace, fused raw material, then in AOD and/or VOD
After middle decarburization, investment lime, fluorite, Antaciron or Antaciron and/or Al become CaO/SiO using group2Than (slag
Middle CaO and SiO2The ratio of concentration (quality %), referred to as slag basicity): 1.5-10, MgO:3-15%, Al2O3: less than 15%
CaO·SiO2·MgO·Al2O3F system slag, is adjusted to C:0.2% or less, Si:0.1-1%, Mn:4-20%, S:0.01%
Below, Ni:25% or less, Cr:25% or less, Al:0.001-0.1% or less, Mg:0.0001-0.01%, Ca:0.0001-0.01%,
The alloy that O:0.0005-0.01%, surplus are made of Fe and inevitable impurity.Particularly, the present invention is with continuous casting machine
Casting plays effect in the case where manufacturing bloom slab.
Specific embodiment
Firstly, being illustrated to high Mn content Fe-Cr-Ni system alloy of the invention.The restriction of chemical component is managed below
By being illustrated.Also, % refers to quality % in this application.
C:0.2% or less
C is austenite stabilizer element, when there are a lot, forms carbide with combinations such as Cr and Mo, reduces and contain in base material
Some solid solution Cr and Mo amount, corrosion resistance are deteriorated.Therefore, make 0.2% or less C content.More preferable 0.1% or less.It is further excellent
Select 0.065%.
Si:0.1-1%
Si is to the effective element of deoxidation, in order to control oxygen concentration 0.01% hereinafter, 0.1% is necessary.Further
Also there is reduction CaOSiO on ground2·MgO·Al2O3It is each to supply Ca and Mg etc. into molten steel by CaO and MgO in F system slag etc.
From 0.0001% or more function.From this viewpoint, it 0.1% is also necessary.On the other hand, if containing more than 1%, slag
In CaO and MgO etc. by over reduction, the supply of Ca, Mg are more than 0.01%.As a result, Ca forms the monomer field trash of CaO,
Surface defect is generated on product.In addition, Mg forms Mg bubble in bloom slab, there is the risk for causing surface defect.Therefore, Si contains
Amount is defined as 0.1-1%.It is preferred that 0.2-0.8%.More preferable 0.25-0.7%.Further preferred 0.3-0.6%.Most preferably 0.35-
0.55%。
Mn:4-20%
Mn is important element in the present invention.That is, improving the solid solubility of N, therefore in high Mn content Fe-Cr-Ni alloy
Steel are hardened, or even if imposing high intensity cold processing, are also kept non magnetic.Further, and by MgO and MgO
Al2O3Field trash is modified as (Mg, Mn) O, (Mg, Mn) OAl respectively2O3The element of Shi Youyong.In view of these situations, addition
4% or more is necessary.But if 20% or more addition, magnetic conductivity is increased and cannot be maintained non magnetic.Further, it is formed with
Harmful MnOSiO2·Cr2O3·Al2O3It is field trash.From these viewpoints, the upper limit 20%.It is preferred that 4.2-17%.More preferably
5.5-16.9%.Further preferred 10-16.8%.Most preferably 13-16.6%.
S:0.01% or less
S is the element for hindering hot-working character, while being to form MnS to reduce the element of corrosion resistance.Therefore, it is necessary to as far as possible
It reduces, S content is 0.01% or less.It is preferred that 0.005% or less.More preferable 0.003% or less.Further preferred 0.001% or less.Most
It is preferred that 0.0007% or less.
Ni:25% or less
Ni is the element for keeping austenite phase stable.In addition, in the environment of improving acid-resisting while improving containing chloride ion
Corrosion resistance.It further, is together with Mn to the effective element of non magnetic characteristic.Therefore, it is necessary containing 25% or less.
Ni is expensive element, therefore the higher cost of content is higher.In view of minimizing cost, Mn concentration contains according to 4.2-17%
If, Ni content also meets necessary characteristic for 23% or less.In addition, if Mn concentration contains according to 6-17%, even if Ni content
Also meet necessary characteristic for 21% or less.Further, if Mn concentration contains according to 10-16.6%, even if Ni content is 8%
Also meet necessary characteristic below.Further, if Mn concentration contains according to 12-16.6%, even if Ni content is 7.7% or less
Also meet necessary characteristic.
Cr:25% or less
Cr is to ensuring the effective element of corrosion resistance.Passivation epithelium is formed in alloy surface, improves resistance to hole corrosion, anti-cracking
Gap corrosivity and anticorrosion stress-resistant cracking behavior, acid resistance, therefore be necessary containing 25% or less.But addition is more than 25% meeting
Promote the formation of the σ phase as intermetallic compound and the formation with the compound of N, causes brittle movement.It therefore, is 25%
Below.It is preferred that 23% hereinafter, more preferable 22% or less.Further preferred 20% or less.
Al:0.001-0.1%
Al is the essential element of deoxidation, when Al content is less than 0.001%, causes oxygen concentration to rise (O > 0.01%), clearly
Cleanliness deteriorates, and causes surface defect.But if containing more than 0.1%, field trash group becomes aluminium oxide Al2O3, can not only generate
The surface defect because of caused by aggregation, and stain can be generated and reduce weldability.Further, contain more than 0.1% sometimes,
Just there is the property for being easy aggregation, there is also promote the MgOAl without MnO2O3The tendency that field trash generates.Therefore, Al content is
0.001-0.1%.It is preferred that 0.002-0.08%.More preferable 0.003-0.06%.Further preferred 0.005-0.055%.Most preferably
0.008-0.052%。
Mg:0.0001-0.01%
Mg is that the composition of the non-metallic inclusion in steel is controlled pairs of surface quality in the case where not forming aggregation
Oxide system (Mg, the Mn) O or CaOSiO not adversely affected2·Al2O3The effective element of MgO system oxide.The effect
It can not be obtained when content is less than 0.0001%, form Mg bubble in bloom slab, therefore can be most containing sometimes more than 0.01% on the contrary
Surface defect is generated on whole product.Therefore, Mg content is defined as 0.0001-0.01%.It is preferred that 0.0002-0.008%.More preferably
0.0003-0.006%.Further preferred 0.0005-0.004%.Most preferably 0.0011-0.0031%.
In order to effectively add Mg into molten steel, preferably by following reaction.
Here, indicate that the ingredient in slag, underscore indicate the ingredient in molten steel in bracket.
In order to which slag basicity within the above range, (is indicated CaO percentage/SiO in slag by Mg control2Percentage
Ratio) control is 1.5-10, while MgO concentration in slag is adjusted to 3-15%.
Ca:0.0001-0.01%
Ca is that the composition of the non-metallic inclusion in steel is controlled pairs of surface quality in the case where not forming aggregation
The CaOSiO not adversely affected2·Al2O3The effective element of MgO system oxide.The effect is in content less than 0.0001%
Shi Wufa is obtained, and forms the monomer field trash of CaO containing sometimes more than 0.01% on the contrary, surface defect is generated in final product.
Therefore, Ca content is defined as 0.0001-0.01%.It is preferred that 0.0002-0.008%.More preferable 0.0003-0.007%.It is further excellent
Select 0.0004-0.0055%.Most preferably 0.0012-0.0051%.
In order to effectively add Ca into molten steel, preferably by following reaction.
In order within the above range, slag basicity be controlled Ca control for 1.5-10.
O:0.0005-0.01%
When O is existed in steel more than 0.01%, desulfurization is hindered, S concentration can be more than 0.01% in molten steel.On the contrary, down to less than
When 0.0005%, Si can be excessively improved to the reducing power of MgO and CaO etc. in slag.That is, due to above-mentioned formula (1) and formula (2)
Overreact carry out, Mg and Ca in molten steel etc. respectively will increase and more than 0.01%.Therefore, O content is defined as 0.0005-
0.01%.In order to control in the range, it is necessary to Si concentration are adjusted to 0.1-1%, and the basicity of slag is adjusted to
1.5-10.It is preferred that 0.0006% to less than 0.005%, more preferable 0.001-0.004%.Further preferred 0.0012-0.0035%.Most
It is preferred that 0.0014-0.0023%.
Also, by the O content numerical value, the total amount of oxide in alloy can be held.The formation such as O and Mg, Al, Ca, Si
Oxide, it may thus be appreciated that oxide content is substantially 1.3 times of O content.It so can be evaluated whether the content of oxide.
Steel of the invention can also further contain one or more of following elements.
Mo:3% or less
Mo is the element for improving corrosion resistance.When more than 3%, the tendency enhancing of σ phase is formed, has the tendency that embrittlement.Therefore,
Stop at 3% or less.It is preferred that 2% or less.More preferable 1% hereinafter, further preferred 0.5% or less.
Cu:3% or less
Cu is for inhibiting processing hardening to improve the useful element of processability.Further, and improve antibiotic property and
The element of sulfuric-resisting corrosivity etc..But when largely adding, hot-working character is reduced, while toughness also reduces.Therefore, it is intended that
It is 3% or less.It is preferred that 2% hereinafter, more preferable 1% or less.Further preferred 0.5% or less.
N:0.4% or less
N is solution strengthening element, appropriate containing sometimes, improves the hardness and corrosion resistance of steel.But it will form in surplus
Cr nitride generates adverse effect to processing performance.Therefore, the upper limit of N content is 0.4% or less.More preferable 0.35% hereinafter, into
One step preferably 0.3% or less.Although also, be not particularly limited, it is preferred additive amount containing 0.15% or more.
Non-metallic inclusion
, according to the invention it is preferred to embodiment be comprising (Mg, Mn) O(or less also include the case where be only MgO), (Mg,
Mn)O·Al2O3(also including below is only MgOAl2O3The case where), CaOSiO2·MgO·Al2O3It is one in oxide
Kind or two or more, (Mg, Mn) OAl2O350% or less is calculated as according to number ratio.Non-metallic inclusion number ratio is given below
The restriction foundation of example.
The composition of non-metallic inclusion includes (Mg, Mn) O, (Mg, Mn) OAl2O3、CaO·SiO2·MgO·Al2O3System
One or more of oxide, (Mg, Mn) OAl2O3According to 50% or less number ratio meter
Stainless steel of the present invention depends on the content of Si, Al, Mg, Ca in steel, includes (Mg, Mn) O, (Mg, Mn) O
Al2O3、CaO·SiO2·MgO·Al2O3It is one or more of oxide.It is containing the reasons why these field trashes, it is first
First, the fusing point of (Mg, Mn) O is up to 2750-2800 DEG C, therefore molten injecting for the tundish from continuous casting machine into mold
It merges and is not sintered in the dipping mouth of a river of gold, therefore accumulation will not be adhered to.Therefore, surface defect will not be caused.
CaO·SiO2·MgO·Al2O3Be oxide fusing point it is lower, be 1300 DEG C or so, therefore it will not be sintered.
Therefore, surface defect will not be caused.
(Mg,Mn)O·Al2O3With MgOAl2O3Compared to being difficult to assemble in the mouth of a river, but belong to the folder for causing surface defect
Sundries, therefore it is preferred for reducing to the greatest extent.But if content is calculated as 50% or less according to number ratio, (Mg, Mn) OAl2O3
It will not adhere in the mouth of a river, therefore be defined as 50% or less according to number ratio meter.It is preferred that 40% hereinafter, more preferable 35% or less.Into
One step preferably 30% or less.Most preferably 25% or less.
In addition, according to the present invention, MnOSiO2·Cr2O3·Al2O3It is that field trash to form Large Inclusions and causes surface
The tendency of defect, therefore inhibit its generation through the invention.Similarly, Al2O3Field trash, CaO field trash also have aggregation and cause
The tendency of surface defect, therefore inhibit its generation through the invention.
Illustrate the reasons why providing the constituent of (Mg, Mn) O below.
MgO:95% or more, MnO:5% or less
The fusing point of MgO is up to 2800 DEG C, therefore will not impregnate aggregately stacked in the mouth of a river.Even if MnO contains 5% hereinafter, molten
Point is also maintained at 2750 DEG C of high-melting-point, and property will not change.Therefore, it is specified that MgO:95% or more, MnO:5% or less.Preferably
It is that MgO is in high concentration side, causes fusing point higher, just more effective, therefore, MgO:96% or more, MnO:4% is hereinafter, more preferably
MgO:98% or more, MnO:2% or less.Further preferably, MgO:99% or more, MnO:1% or less.Most preferably MgO:99.2% or more,
MnO:0.8% or less.
Illustrate to provide (Mg, Mn) OAl below2O3Constituent the reasons why.
MgO:10-40%, MnO:0.1-3%, Al2O3: 60-90%
(Mg,Mn)O·Al2O3It is the compound with wider solid solution.Solid solution is formed within the above range, therefore such as
This regulation.Also, here, MnO can mitigate aggregation property, therefore it is defined as MgO:10-40%, MnO:0.1-3%, Al2O3: 60-
90%.MgO concentration is in low concentration side in solid solution, and MnO concentration is in high concentration side, Al2O3Concentration is in low concentration one
Side can then improve the effect for reducing aggregation, therefore preferably MgO:10-38%, MnO:0.2-3%, Al2O3: 60-80%, more preferably
MgO:10-35%, MnO:0.5-3%, Al2O3: 60-75%.Most preferably MgO:10-33%, MnO:1-3%, Al2O3: 60-70%.
Illustrate regulation CaOSiO below2·Al2O3The reasons why each ingredient of MgO system field trash.
CaO:20-60%, SiO2: 10-40%, Al2O3: 40% or less, MgO:40% or less
CaO·SiO2·Al2O3The fusing point of MgO system oxide remains essentially in 1300 DEG C or so hereinafter, therefore setting
For above range.Also, fusing point is got higher when CaO is less than 20%, and CaO field trash coexists when being more than 60% in CaO.SiO2Less than 10% with
And more than 40%, fusing point is all got higher.Al2O3Pure Al coexists more than 40%2O3Field trash.Fusing point is got higher when MgO is more than 40%.
Based on above-mentioned, it is specified that CaO:20-60%, SiO2: 10-40%, Al2O3: 40% or less, MgO:40% or less.It is preferred that CaO:
21-55%、SiO2: 11-39%, Al2O3: 35% or less, MgO:35% is hereinafter, more preferable CaO:23-52%, SiO2: 11.2-35%,
Al2O3: 32% or less, MgO:30% or less.Further preferred CaO:26-51.2%, SiO2: 13-25%, Al2O3: 25% or less, MgO:
25% or less.
Manufacturing method
According to the present invention, the manufacturing method of high Mn content Fe-Cr-Ni alloy is also provided.
It is the fused raw material first in electric furnace, then in AOD and/or VOD after decarburization, puts into lime, fluorite, ferrosilicon
Alloy or Antaciron and/or Al become CaO/SiO using group2Than: 1.5-10, MgO:3-15%, Al2O3: less than 15%
CaO·SiO2·MgO·Al2O3The method that F system slag carrys out refined molten steel.Thus molten alloy composition is adjusted to C:0.2%
Below, Si:0.1-1%, Mn:4-20%, S:0.01% or less, Ni:25% or less, Cr:25% or less, Al:0.001-0.1% or less,
Mg:0.0001-0.01%, Ca:0.0001-0.01%, O:0.0005-0.01%, surplus are made of Fe and inevitable impurity
Alloy.By so operating, the form of field trash can be controlled to include (Mg, Mn) O, (Mg, Mn) OAl2O3、CaO·
SiO2·MgO·Al2O3It is one or more of oxide, (Mg, Mn) OAl2O3According to number ratio be calculated as 50% with
Under.
Further, it is also possible to control as following compositing range: (Mg, Mn) O be MgO:95% or more, MnO:5% hereinafter,
(Mg,Mn)O·Al2O3For MgO:10-40%, MnO:0.1-3%, Al2O3: 60-90%, CaOSiO2·Al2O3The oxidation of MgO system
Object is CaO:20-60%, SiO2:10-40%、Al2O3: 40% or less, MgO:40% or less.Thus, it is possible to prevent in final product
Surface defect, and ensure good surface texture.
The manufacturing method for the stainless steel alloy being related to according to the present invention has feature in terms of the composition of slag as previously described.
Illustrate the foundation that regulation slag forms in the present invention below.
CaO/SiO2Than: 1.5-10
In order to make alloy molten solution more efficiently deoxidation, desulfurization, and by non-metallic inclusion composition control of the invention
In range, it is necessary to control the CaO/SiO of slag2Than.When the numerical value of the ratio is more than 10, the activity of CaO is got higher in slag, formula
(2) overreact carries out.Therefore, the Ca concentration being reduced in molten steel is got higher more than 0.01%, generates the non-gold of monomer of CaO
Belong to field trash, be attached in the mouth of a river, final product is made to generate surface defect.It therefore, is the upper limit with 10.On the other hand, CaO/
SiO2When than less than 1.5, deoxidation and desulfurization can not be deepened, not can be controlled to S concentration of the invention, O concentration range.Therefore, with
1.5 be lower limit.In order to control as this CaO/SiO2Than that can be adjusted by addition lime or fluorite as CaO ingredient
Section.On the other hand, SiO2Ingredient can be obtained by the oxidation as the Si of deoxidier.That is, putting into FeSi in Cr reduction period
Alloy restores Cr oxide, then silica SiO is formed in slag2.Although being not limited to this, but if if deficiency, making
For SiO2Ingredient adds quartz sand in right amount can also be with.Therefore, basicity is defined as 1.5-10.It is preferred that 1.5-8.More preferable 2-7.6, into
The preferred 2.5-7 of one step.
MgO:3-15%
MgO in slag be for by the control of Mg concentration contained in molten steel in concentration range described in claim and
It overstates the element wanted, while controlling also for by non-metallic inclusion as element important for currently preferred composition.
For this purpose, being lower limit with 3%.On the other hand, MgO concentration is more than 15%, and the overreact of formula (2) carries out, and Mg concentration is got higher in molten steel,
Mg bubble is formed in bloom slab, therefore surface defect can be generated in final product.For this purpose, with 15% for the MgO concentration upper limit.It is molten
Dolomite brick or magnesite-chrome brick used are dissolved out into slag when MgO in slag is refined by AOD or VOD is refined becomes defined
Range.Alternatively, the useless brick of dolomite brick or magnesite-chrome brick can also be added in order to control within the specified scope.It is preferred that 4-13%, more
It is preferred that 6-12.5%.Further preferred 7-12.3%.
Al2O3: less than 15%
Al in slag2O3High then in molten steel Al concentration is also high, can generate more than 50 several % (Mg, Mn) OAl2O3
Or MgOAl2O3.In addition, also will form Al2O3Aluminate, it is therefore necessary to the Al as far as possible in reduction slag2O3It is dense
Degree.Therefore, with 15%(less than) be the upper limit.It is preferred that 13% hereinafter, more preferable 12% or less.Further preferred 10% or less.
Embodiment
Embodiment is given below, further clarifies composition and function and effect of the invention, but the present invention is not limited to following
Embodiment.By 60 tons of electric furnace of capacity, with dilval, pure nickel, ferrochrome, iron filings, stainless steel grinding dust, Fe-Ni, Fe-
Mn alloy bits etc. are raw material, are melted.A part of steel grade also adds FeMo or Cu as raw material.Then, in AOD and/or VOD
The middle oxygen blast refining (refinement oxide) carried out for removing C, puts into lime stone and fluorite, generates CaOSiO2·Al2O3·
MgOF system slag further puts into FeSi alloy or FeSi alloy and/or Al, carries out Cr reduction, then carries out deoxidation.So
Afterwards, further Ar stirring in-depth desulfurization.Then, tapping carries out temperature adjusting and constituent adjustment, passes through continuous casting machine to casting ladle
Manufacture bloom slab.
Manufactured bloom slab carries out surface grinding, heats and impose hot rolling at 1200 DEG C, manufactures the heat with a thickness of 6mm
Band.Then, it is annealed, pickling, removes the oxide skin on surface.Finally impose cold rolling, the thin plate that manufacture plate thickness is 1mm.
Slag composition, nonmetal inclusion at the end of chemical component, AOD or the VOD of Fe-Cr-Ni alloy obtained are refined
Object composition and inclusion morphology and manufacturing property evaluation and surface quality evaluation are shown in table 1.Also, the "-" in table 1 indicates
Analysis bottom line or less is in because of not adding.
(1) chemical component of alloy and slag composition: carrying out quantitative analysis using fluorescent x-ray analyzer, alloy
Oxygen concentration melts infrared absorption by inert purge gas pulses and carries out quantitative analysis.
(2) non-metallic inclusion forms: casting carries out mirror ultrafinish to the sample taken with tundish, makes upon starting
With SEM-EDS, 20 points is selected to measure size the field trash for 5 microns or more at random.
(3) the number ratio of spinel inclusion object: number ratio is evaluated from the measurement result of above-mentioned (2).
(4) manufacturing property is evaluated: when determining to manufacture bloom slab by continuous casting machine, steel is supplied into mold from tundish
The dipping mouth of a river of water is whether there is or not generation blocking and whether there is or not crackings when generation hot rolling.Cracking is nothing when impregnating nozzle blocking and hot rolling
Shi Jiwei zero.Be denoted as when cracking when on the other hand, generation impregnates nozzle blocking or hot rolling ×.
(5) quality evaluation: visual access panel determines whether generation surface defect with a thickness of the thin sheet surface of 1mm.Observation volume
Material overall length is all without being determined as ◎ when defect, 1/m2It is determined as zero below, more than 1/m2And be determined as when largely generating ×.
Embodiment is shown in table 1 and table 2.Example 1 to 7 meets the scope of the present invention, therefore manufacturing property does not find to ask
Topic, and there is no surface defect in final product, good quality can be obtained.On the other hand, comparative example falls in of the invention
Except range, therefore manufacturing property leads to the problem of and produces surface defect.Each example is illustrated below.
Basicity is less than 1.5 in comparative example 8, therefore deoxidation and desulfurization are not goed deep into, and S is at concentrations up to 0.0112%.As a result,
Hot-working character reduces, and when hot-working cracks multiple.Further, Ca and Al is down to analysis bottom line hereinafter, field trash group
At not with MnOSiO2·Cr2O3·Al2O3Based on system, therefore Large Inclusions are largely formed, is generated in final product
Because of surface defect caused by field trash.
Basicity is up to more than 10 in comparative example 9, therefore oxygen concentration also becomes too low, and Ca is at concentrations up to 0.0112%.In addition,
MgO concentration also reaches analysis bottom line or less down to 2.1%, Mg concentration in slag.As a result, the monomer for generating CaO is non-
Metallic inclusion is attached to dipping mouth of a river inner wall position in casting process, leads to nozzle blocking, further in final product
It generates because of surface defect caused by field trash.
Alumina concentration is up to 18.5% in slag in comparative example 10, therefore generates MgOAl2O3Non- gold based on system
Belong to field trash, dipping mouth of a river inner wall position is attached in casting process, leads to nozzle blocking.The attachment falls off in turn, quilt
Solidified shell is captured, and surface defect is generated.
Si is less than 0.1% in comparative example 11, thus Mg and Ca concentration reach analysis bottom line hereinafter, field trash composition with
MnO·SiO2·Al2O3·Cr2O3Based on system, generated in final product because of surface defect caused by field trash.Into one
Step ground, deoxidation and desulfurization do not carry out deeply, and S is at concentrations up to 0.0131%.As a result, hot-working character reduces, when hot-working
Generate cracking.
Si is up to 1.21% in comparative example 12, therefore for CaO and MgO etc. by over reduction, Ca concentration is 0.0108% in slag,
Mg concentration is 0.0121%, belongs to excess supply.As a result, field trash composition is with CaO monomer and MgOAl2O3Based on system,
Lead to nozzle blocking, further forms Mg bubble in bloom slab, surface defect is generated in final product.
Al in comparative example 13 in molten steel forms aluminate at concentrations up to 0.123%, leads to nozzle blocking.
Also, MgO concentration is up to more than 15% in slag, therefore the Mg in molten steel forms Mg gas at concentrations up to 0.0121% in bloom slab
Bubble, generates surface defect in final product.
。
。
Using general equipment, the excellent high Mn content Fe-Cr-Ni alloy of surface texture can be manufactured inexpensively.
Claims (5)
1. a kind of high Mn content Fe-Cr-Ni alloy, be C:0.2% or less, Si:0.1-1%, Mn:4-20%, S:0.01% or less,
Ni:25% or less, Cr:25% or less, Al:0.001-0.1%, Mg:0.0001-0.01%, Ca:0.0001-0.01%, O:0.0005-
0.01%, the alloy that surplus is made of Fe and inevitable impurity, which is characterized in that nonmetal inclusion contained in the alloy
Object includes to be dissolved made of MnO (Mg, Mn) O, principal component MgOAl in principal component MgO2O3In be dissolved MnOAl2O3And
At (Mg, Mn) OAl2O3、CaO·SiO2·MgO·Al2O3It is one or more of oxide, it is described (Mg, Mn)
O·Al2O350% or less is calculated as according to number ratio.
2. high Mn content Fe-Cr-Ni alloy described in claim 1 further contains Mo:3% or less, Cu:3% or less, N:
One or more of 0.4% or less.
3. high Mn content Fe-Cr-Ni alloy described in claim 1, wherein (Mg, the Mn) O is MgO:95% or more, MnO:
5% hereinafter, (Mg, the Mn) OAl2O3For MgO:10-40%, MnO:0.1-3%, Al2O3: 60-90%, the CaOSiO2·
MgO·Al2O3Be oxide be CaO:20-60%, SiO2:10-40%、Al2O3: 40% or less, MgO:40% or less.
4. high Mn content Fe-Cr-Ni alloy as claimed in claim 2, wherein (Mg, the Mn) O is MgO:95% or more, MnO:
5% hereinafter, (Mg, the Mn) OAl2O3For MgO:10-40%, MnO:0.1-3%, Al2O3: 60-90%, the CaOSiO2·
MgO·Al2O3Be oxide be CaO:20-60%, SiO2:10-40%、Al2O3: 40% or less, MgO:40% or less.
5. the manufacturing method of the described in any item high Mn content Fe-Cr-Ni alloys of claim 1-4, is cast with continuous casting machine
It makes to manufacture the manufacturing method of bloom slab, which is characterized in that the fused raw material in electric furnace, the then decarburization in AOD and/or VOD
Afterwards, lime, fluorite, Antaciron or Antaciron and/or Al are put into, becomes CaO/SiO using group2Than: 1.5-10,
MgO:3-15%, Al2O3: the CaOSiO less than 15%2·MgO·Al2O3F system slag, be adjusted to C:0.2% or less,
Si:0.1-1%, Mn:4-20%, S:0.01% or less, Ni:25% or less, Cr:25% or less, Al:0.001-0.1% or less, Mg:
The conjunction that 0.0001-0.01%, Ca:0.0001-0.01%, O:0.0005-0.01%, surplus are made of Fe and inevitable impurity
Gold.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015072236A JP6603033B2 (en) | 2015-03-31 | 2015-03-31 | High Mn content Fe-Cr-Ni alloy and method for producing the same |
| JP2015-072236 | 2015-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106011688A CN106011688A (en) | 2016-10-12 |
| CN106011688B true CN106011688B (en) | 2019-04-30 |
Family
ID=57080953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610174969.XA Active CN106011688B (en) | 2015-03-31 | 2016-03-25 | High Mn content Fe-Cr-Ni alloy and its manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6603033B2 (en) |
| CN (1) | CN106011688B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6737304B2 (en) * | 2017-06-12 | 2020-08-05 | Ｊｆｅスチール株式会社 | Steel melting method and continuous casting method |
| JP7042057B2 (en) * | 2017-10-25 | 2022-03-25 | 日鉄ステンレス株式会社 | Stainless steel materials and welded structural members with excellent slag spot generation suppression ability and their manufacturing methods |
| JP7012557B2 (en) * | 2018-02-23 | 2022-01-28 | 日鉄ステンレス株式会社 | High Mn austenitic stainless steel and its manufacturing method |
| JP7029544B2 (en) * | 2018-05-23 | 2022-03-03 | ファ，マンチャオ | NPR non-magnetic rock bolt steel material and its production method |
| JP6762414B1 (en) * | 2019-12-27 | 2020-09-30 | 日本冶金工業株式会社 | Stainless steel with excellent surface properties and its manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113660A (en) * | 1993-08-16 | 1995-12-20 | 新日本制铁株式会社 | Steel containing ultrafine oxide inclusions dispersed therein |
| CN1836052A (en) * | 2004-01-22 | 2006-09-20 | 株式会社神户制钢所 | Method for producing high cleanness steel excellent in fatigue strength or cold workability |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146429A (en) * | 2000-11-08 | 2002-05-22 | Hitachi Metals Ltd | METHOD FOR PRODUCING AUSTENITIC HIGH Mn STAINLESS STEEL |
| JP4025171B2 (en) * | 2002-10-29 | 2007-12-19 | 日本冶金工業株式会社 | Stainless steel having excellent corrosion resistance, weldability and surface properties and method for producing the same |
| JP4025170B2 (en) * | 2002-10-29 | 2007-12-19 | 日本冶金工業株式会社 | Stainless steel excellent in corrosion resistance, weldability and surface properties and method for producing the same |
| JP4285302B2 (en) * | 2004-03-31 | 2009-06-24 | 住友金属工業株式会社 | Stainless steel containing fine inclusions and method for producing the same |
| JP5693030B2 (en) * | 2010-03-26 | 2015-04-01 | 日新製鋼株式会社 | Austenitic stainless steel sheet with excellent detergency and method for producing the same |
| JP5950306B2 (en) * | 2012-11-26 | 2016-07-13 | 日本冶金工業株式会社 | Fe-Ni-Cr alloy superior in sulfuric acid corrosion resistance, intergranular corrosion resistance and surface properties, and method for producing the same |
| JP6146908B2 (en) * | 2013-10-09 | 2017-06-14 | 日本冶金工業株式会社 | Stainless steel with excellent surface properties and its manufacturing method |
-
2015
- 2015-03-31 JP JP2015072236A patent/JP6603033B2/en active Active
-
2016
- 2016-03-25 CN CN201610174969.XA patent/CN106011688B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113660A (en) * | 1993-08-16 | 1995-12-20 | 新日本制铁株式会社 | Steel containing ultrafine oxide inclusions dispersed therein |
| CN1836052A (en) * | 2004-01-22 | 2006-09-20 | 株式会社神户制钢所 | Method for producing high cleanness steel excellent in fatigue strength or cold workability |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6603033B2 (en) | 2019-11-06 |
| JP2016191124A (en) | 2016-11-10 |
| CN106011688A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106011688B (en) | High Mn content Fe-Cr-Ni alloy and its manufacturing method | |
| US8778260B2 (en) | Duplex stainless steel | |
| EP2765207B1 (en) | Method for producing spheroidal graphite cast iron and vehicle component using said spheroidal graphite cast iron | |
| RU2421298C2 (en) | Steel article with high temperature of austenitic grain enlargement and method of its production | |
| JP6146908B2 (en) | Stainless steel with excellent surface properties and its manufacturing method | |
| Ma et al. | Control of the precipitation of TiN inclusions in gear steels | |
| JP6314911B2 (en) | Manufacturing method of high cleanliness steel | |
| JP5277556B2 (en) | Method for producing Ti-containing ultra-low carbon steel and method for producing Ti-containing ultra-low carbon steel slab | |
| US20090038439A1 (en) | Process for producing steel for high-carbon steel wire material with excellent drawability and fatique characteristics | |
| CN108193136A (en) | A kind of 40Cr hot rolled circular steels and its production method | |
| JP6990337B1 (en) | Ni-based alloy with excellent surface properties and its manufacturing method | |
| JP7217353B2 (en) | Seawater corrosion resistant steel and its manufacturing method | |
| CN104233098A (en) | Low-cost 60Si2Mn spring steel and production technology thereof | |
| CN110408842A (en) | The two phase stainless steel of excellent in low temperature toughness | |
| CN110029264A (en) | A kind of low cost 40CrV tool steel and its production method | |
| US20120261085A1 (en) | Extremely low carbon steel plate excellent in surface characteristics, workability, and formability and a method of producing extremely low carbon cast slab | |
| JP4656007B2 (en) | Method of processing molten iron by adding Nd and Ca | |
| JP2012052224A (en) | Steel material excelling in toughness of weld heat-affected zone | |
| JP2007063576A (en) | Alloy for nonferrous molten metal | |
| CN110541121A (en) | Non-magnetic steel and processing method thereof | |
| CN109554517A (en) | A kind of method of billet caster production titaniferous ferritic stainless steel small billet | |
| KR100825632B1 (en) | Ferritic stainless steel having excellent formability of welded zone and corrosion resistance, and method for manufacturing the same | |
| JP4586648B2 (en) | Steel plate excellent in workability and method for producing the same | |
| JP5056826B2 (en) | Steel for continuous casting and method for producing the same | |
| JP2009270165A (en) | Extra-low carbon steel sheet, and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |