CN107130188B - Welding ferritic stainless steel and its method for refining - Google Patents
Welding ferritic stainless steel and its method for refining Download PDFInfo
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- CN107130188B CN107130188B CN201710224477.1A CN201710224477A CN107130188B CN 107130188 B CN107130188 B CN 107130188B CN 201710224477 A CN201710224477 A CN 201710224477A CN 107130188 B CN107130188 B CN 107130188B
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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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- 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
- C21C7/068—Decarburising
- C21C7/0685—Decarburising of stainless steel
-
- 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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
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- 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 invention discloses a kind of welding ferritic stainless steel and its method for refining comprising AOD furnace is smelted, LF furnace refines and CC continuous casting process；The mass percentage of the stainless steel chemical component are as follows: C < 0.03%, Si < 1.0%, Mn < 1.5%, P < 0.03%, S < 0.01%, Cr 11.00~12.50%, Mo < 0.6%, Ni 0.9~1.1%, surplus are Fe and inevitable impurity.This stainless steel is by optimization ingredient, and making it, there are a certain proportion of austenites under welding temperature, prevents sharply growing up for ferrite crystal grain, while improving nickel in steel, molybdenum content, improves material weldability and corrosion resistance.This method improves the welding and corrosion resisting property of ferritic stainless steel, can use in more rugged environment, and the service life of product can be greatly improved, and reduces frequently pollution of the processing to environment；Products obtained therefrom has good weldability and corrosion resisting property, and can be used for substituting galvanized wire, Zn-Al alloy wire etc. need to weld the screen product used；The pollution in process of manufacture can be efficiently reduced.
Description
Technical field
The present invention relates to a kind of stainless steel and its method for refining, especially a kind of welding ferritic stainless steel and its refining
Method.
Background technique
Currently, domestic galvanized wire and Zn-Al alloy wire usage amount are very big, it is mainly used for highway, railway protective net and is used for
The gabion box of hydraulic engineering, the product are mainly progress surface heat plating after ordinary low-carbon steel drawing, make it have certain corrosion resistance,
But a large amount of harmful human health " three wastes " products can be not only given off in electroplating process, and IE can also generate serious danger to environment
Evil.
Stainless steel itself has a good corrosion resisting property, at the same stainless iron be drawn into after filament have it is certain
Flexibility (or by annealing, it is made to have more preferably mechanical property)；Therefore, with the ferrite stainless of good welds performance
Steel can need to weld the screen product used for galvanized wire, Zn-Al alloy wire etc..Life of the ferritic stainless steel from base material to product
Production process does not need to be electroplated, therefore can greatly reduce the pollution to environment.
Summary of the invention
The technical problem to be solved in the present invention is to provide the good welding ferritic stainless steels of a kind of weldability, corrosion resistance；
The present invention also provides a kind of method for refining of welding ferritic stainless steel.
In order to solve the above technical problems, the mass percentage of chemical component adopted by the present invention are as follows: C < 0.03%, Si
< 1.0%, Mn < 1.5%, P < 0.03%, S < 0.01%, Cr 11.00~12.50%, Mo < 0.6%, Ni < 1.1%, N <
0.025%, surplus is Fe and inevitable impurity.
Preferably, the mass percentage of chemical component are as follows: C < 0.03%, Si 0.3%~0.4%, Mn 0.7%~0.9%,
P < 0.03%, S < 0.01%, Cr 11.50~12.50%, Mo 0.2%~0.3%, 0.9%≤Ni < 1.1%, N < 0.025%, it is remaining
Amount is Fe and inevitable impurity.
The method of the present invention includes that AOD furnace is smelted, LF furnace refines and CC continuous casting process；The quality of the stainless steel chemical component
Percentage composition is as described above.
Rifle each phase gas distribution in side in AOD furnace smelting process described in the method for the present invention are as follows: 1 stage of decarburization O222~
24Nm3/ ton steel, N22.0~2.5Nm3/ ton steel；2 stage of decarburization O238~40Nm3/ ton steel, 4.7~5.2Nm of Ar3/ ton steel；
3 stage of decarburization O21.6~2.1Nm3/ ton steel, 1.6~2.1Nm of Ar3/ ton steel；4 stage of decarburization O20.85~1.05Nm3/ ton
Steel, 2.5~2.8Nm of Ar3/ ton steel；5 stage of decarburization O21.4~1.6Nm3/ ton steel, 5.4~5.7Nm of Ar3/ ton steel；Decarburization 6
Stage O21.6~1.8Nm3/ ton steel, 6.8~7.1Nm of Ar3/ ton steel；7 stage of decarburization O20.9~1.1Nm3/ ton steel, Ar 7.1
~7.3Nm3/ ton steel；Reduction period stage 6.5~6.7Nm of Ar3/ ton steel；
The continuous casting process: at 1540~1555 DEG C, pulling rate is 1.05~1.15m/min for first furnace tundish temperature control；It is non-
The control of first furnace tundish temperature is at 1535~1550 DEG C, 1.05~1.15m/min of casting speed control；Weak intensity is cold in two cold stages uses
But, the middle weak intensity is cooled to the two cold every streamflow controls in one area of stage in 180~200L/min, the every streamflow control in 2nd area
In 150~180L/min, the every streamflow control in 3rd area is in 100~120L/min.
Use 1250 DEG C of temperature > of dephosphorization molten iron of AOD furnace smelting process described in the method for the present invention, wherein main component
Mass percentage are as follows: C >=3.0%, Si≤0.02%, P≤0.03%.
Top gun oxygen pressure is 6~17bar in AOD furnace smelting process described in the method for the present invention, and blowing oxygen quantity is 60 before mentioning rifle
~62m3/ ton steel.
It is separately added into ferrochrome, molybdenum-iron, electrolytic manganese and nickel plate in AOD furnace smelting process described in the method for the present invention and carries out alloy
Change；Decarburization and cr yield after alloying, reduction period add ferrosilicon to carry out chromium oxide reduction.
In LF furnace refining process described in the method for the present invention, argon bottom-blowing time > 12min before casting, upper machine pouring temperature
1620~1640 DEG C.
In continuous casting process described in the method for the present invention, slow cooling is carried out after steel billet straightening.
The principle of the method for the present invention is: mixed by AOD refining furnace stage of respectively blowing containing the dephosphorization molten iron compared with low phosphorus content
The reasonable set for closing gas ratio carries out maximum decarburization and cr yield and heating treatment, while being added and carrying out compared with stable element
Molten steel alloying, reduction period are added a certain amount of ferrosilicon and carry out Cr in slag2O3Reduction, further increases yield of alloy, and LF furnace is smelted
Process is finely tuned by alloying element and temperature controls, and is ready for subsequent casting steel billet, because of steel grade height in continuous casting process
Wen Shiwei " ferrite+austenite " two-way tissue, therefore two cold stages need to be operated using weak cold, to mitigate steel billet internal stress, simultaneously
Steel billet needs to carry out slow cooling after passing through straightening section.
The beneficial effects of adopting the technical scheme are that the present invention by optimization ferritic stainless steel finished product at
Point, so that it, there are a certain proportion of austenite, is prevented sharply growing up for ferrite crystal grain under welding temperature, while improving in steel
Nickel, molybdenum content improve material weldability and corrosion resistance.
The method of the present invention improves the welding and corrosion resisting property of ferritic stainless steel, can make in more rugged environment
With the service life of product is greatly improved in class, reduces frequently pollution of the processing to environment；Products obtained therefrom has good weldability
And corrosion resisting property, can be used for substituting galvanized wire, Zn-Al alloy wire etc. need to weld the screen product used；Production can be efficiently reduced
Pollution in process.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the organization chart of steel billet of the present invention；
Fig. 2 is the organization chart of hot rolling wire of the present invention；
Fig. 3 is the welding organization chart of product of the present invention；
Fig. 4 is the corrosion comparison diagram of product of the present invention.
Specific embodiment
Embodiment 1-6: the process flow of the method for refining of this welding ferritic stainless steel are as follows: dephosphorization molten iron-AOD furnace
Smelting-LF furnace refining-CC continuous casting-rolling can be used by annealing and pickling；Each technical process is as described below:
(1) dephosphorization molten iron: main component (wt) needs to meet in dephosphorization molten iron: C >=3.0%, Si≤0.02%, P≤0.03%,
1250 DEG C of molten iron temperature >.The Contents of Main Components of dephosphorization molten iron is shown in Table 1 in each embodiment.
Table 1: the Contents of Main Components of dephosphorization molten iron in each embodiment
(2) AOD furnace smelting process: dephosphorization molten iron is calculated by 40~50 tons of charge weights, and tap is by 57~60 tons of calculating, top
Rifle oxygen pressure range is 6~17bar, mentions 60~62m of blowing oxygen quantity before rifle3/ ton steel, side rifle oxygen, argon pressure range be 3~
19bar, each phase gas distribution of side rifle are as follows: 1 stage of decarburization O222~24Nm3/ ton steel, N22.0~2.5Nm3/ ton steel；Decarburization
2 stage O238~40Nm3/ ton steel, 4.7~5.2Nm of Ar3/ ton steel；3 stage of decarburization O21.6~2.1Nm3/ ton steel, Ar 1.6
~2.1Nm3/ ton steel；4 stage of decarburization O20.85~1.05Nm3/ ton steel, 2.5~2.8Nm of Ar3/ ton steel；5 stage of decarburization O2
1.4~1.6Nm3/ ton steel, 5.4~5.7Nm of Ar3/ ton steel；6 stage of decarburization O21.6~1.8Nm3/ ton steel, Ar 6.8~
7.1Nm3/ ton steel；7 stage of decarburization O20.9~1.1Nm3/ ton steel, 7.1~7.3Nm of Ar3/ ton steel；Reduction period stage Ar 6.5
~6.7Nm3/ ton steel.The specific gas distribution in side rifle each stage is shown in Table 2 in each embodiment.
Table 2: the specific gas in side rifle each stage distributes (Nm in each embodiment3/ ton steel)
It in smelting process, is separately added into the alloys such as ferrochrome, molybdenum-iron, nickel plate and carries out alloying, wherein ferrochrome additional amount is 250
~260kg/ tons of steel (chromium absorptivity about 95.5%), about 3.8~4.0kg/ tons of steel of molybdenum-iron additional amount (molybdenum absorptivity about 98%), electrolysis
About 7.7~7.9kg/ tons of steel of manganese additional amount (manganese integrated absorbance about 85%), about 9.7~9.9kg/ tons of steel of nickel plate additional amount (inhale by nickel
Yield is about that 98%), steel slag alkalinity ranges are 2.0~2.2, carries out decarburization and cr yield after alloying, reduction period adds ferrosilicon to be aoxidized
Chromium reduction, component requirements of tapping is (wt): C≤0.02%, Si 0.3%~0.4%, Mn 0.6%~0.8%, P≤0.03%, and S≤
0.01%, Cr 10.5%~11.5%, 0.9%≤Ni < 1.1%, Mo≤0.6%, surplus are Fe and inevitable impurity.It is each to implement
Metal of alloying additional amount is shown in Table 3 in example.
Table 3: metal of alloying additional amount (kg/ tons of steel) in each embodiment
(2) LF furnace refining process: AOD molten steel is blended into LF furnace, and low-carbon ferrochromium, electrolytic manganese, nickel plate and molybdenum-iron etc. is added
Alloy carries out trimming, and before upper machine casting, the argon bottom-blowing time answers >=12min, and steel inclusion is made sufficiently to float, and upper machine pours
1620~1640 DEG C of temperature of note, the mass percentage of finished product ingredient are as follows: C < 0.03%, Si < 1.0%, Mn < 1.5%, P <
0.03%, S < 0.01%, Cr 11.00~12.50%, Mo < 0.6%, Ni < 1.1%, N < 0.025%, surplus are Fe and can not keep away
The impurity exempted from.The mass percentage of preferred component are as follows: C < 0.03%, Si 0.3%~0.4%, Mn 0.7%~0.9%, P <
0.03%, S < 0.01%, Cr 11.50~12.50%, Mo 0.2%~0.3%, 0.9%≤Ni < 1.1%, N < 0.025%, surplus are
Fe and inevitable impurity.The component content of each embodiment LF furnace refining tapping is shown in Table 4.
Table 4: the component content (wt%) of each embodiment LF furnace refining tapping
(3) CC continuous casting process: steel grade liquidus temperature is 1504 DEG C；First furnace tundish temperature control range is 1540~1555
DEG C, 1.05~1.15m/min of casting speed control；Report temperature controlling range is 1535~1550 DEG C in non-head furnace, casting speed control 1.05
~1.15m/min；1500~1600L/min of crystallizer water；M-EMS Current 370A；M-EMS frequency
Rate 4.0Hz；Weak intensity is cooling in two cold stages uses, needs slow cooling after steel billet straightening；The retarded cooling process: van-type heating furnace is used
It anneals, opens heating furnace maximum heating ability, in-furnace temperature is risen to 500 DEG C, continuous casting billet is put into heating furnace, is kept the temperature
After 1h, stop heat preservation, by door opened 5cm, when temperature is down to 400 DEG C by door opened to 15cm, when temperature is down to 250 DEG C
When fire door is all turned on, when temperature is down to 100 DEG C or less, heating furnace trolley is outputed and is air-cooled to room temperature, terminate slow cooling.Respectively
The concrete technology of CC continuous casting is shown in Table 5 in embodiment.
Table 5: the concrete technology of CC continuous casting in each embodiment
Fig. 1 is the organization chart of 1 gained steel billet of embodiment；Fig. 2 is the organization chart of 1 gained hot rolling wire of embodiment；Fig. 3 is real
Apply the welding organization chart of 1 products obtained therefrom of example；Fig. 4 is the corrosion comparison diagram of 1 products obtained therefrom of embodiment, wherein left number first three be normal
0Cr13C steel wire obtained by technique is advised, the last one is 1 gained 0Cr13Ni steel wire of embodiment.By Fig. 1-4 as it can be seen that the steel grade slab
Low power sample is normal, does not find intercrystalline straightening cracks, illustrates that entire continuous casting production process Stress Control is good.Group after wire annealing
It knits uniformly, is under room temperature " ferrite+carbide ", there is good mechanical property, meet the subsequent drawing essence line production of client.Weldering
Connecing region, there is no obvious weld seams, while grain size and the more conventional 0Cr13C of high-temperature heat-affected zone area (low manganese) steel grade are obvious
Reduce.Corrosion test equipment are as follows: smoke test machine (5% NaCl aerosolized saline) handles time 200h, and three sample of left side is
0Cr13C steel grade, rightmost side sample are 0Cr13Ni steel grade in embodiment, under the conditions of comparison can be seen that same treatment, 0Cr13C sample
Product surface oxidisation phenomenon is serious, and 0Cr13Ni sample surfaces almost do not get rusty, illustrates that the ingredient steel grade corrosion resistance is good.
Claims (9)
1. a kind of welding ferritic stainless steel, which is characterized in that the mass percentage of its chemical component are as follows: C < 0.03%,
Si < 1.0%, 0.70≤Mn < 1.5%, P < 0.03%, S < 0.01%, Cr 11.00~12.50%, Mo < 0.6%, 0.84≤Ni
< 1.1%, N < 0.025%, surplus are Fe and inevitable impurity.
2. welding ferritic stainless steel according to claim 1, which is characterized in that the quality percentage of its chemical component contains
Amount are as follows: C < 0.03%, Si 0.3%~0.4%, Mn 0.7%~0.9%, P < 0.03%, S < 0.01%, Cr 11.50~12.50%,
Mo 0.2%~0.3%, 0.9%≤Ni < 1.1%, N < 0.025%, surplus are Fe and inevitable impurity.
3. it is a kind of welding use ferritic stainless steel method for refining, it is characterised in that: it include AOD furnace smelt, LF furnace refining and
CC continuous casting process；The mass percentage of the stainless steel chemical component are as follows: C < 0.03%, Si < 1.0%, 0.70≤Mn <
1.5%, P < 0.03%, S < 0.01%, Cr 11.00~12.50%, Mo < 0.6%, 0.84≤Ni < 1.1%, N < 0.025%, it is remaining
Amount is Fe and inevitable impurity.
4. the method for refining that ferritic stainless steel is used in welding according to claim 3, which is characterized in that the AOD furnace smelting
Rifle each phase gas distribution in side during refining are as follows: 1 stage of decarburization O222~24Nm3/ ton steel, N22.0~2.5Nm3/ ton steel；It is de-
2 stage of carbon O238~40Nm3/ ton steel, 4.7~5.2Nm of Ar3/ ton steel；3 stage of decarburization O21.6~2.1Nm3/ ton steel, Ar
1.6~2.1Nm3/ ton steel；4 stage of decarburization O20.85~1.05Nm3/ ton steel, 2.5~2.8Nm of Ar3/ ton steel；5 stage of decarburization O2
1.4~1.6Nm3/ ton steel, 5.4~5.7Nm of Ar3/ ton steel；6 stage of decarburization O21.6~1.8Nm3/ ton steel, Ar 6.8~
7.1Nm3/ ton steel；7 stage of decarburization O20.9~1.1Nm3/ ton steel, 7.1~7.3Nm of Ar3/ ton steel；Reduction period stage Ar 6.5
~6.7Nm3/ ton steel；
The CC continuous casting process: at 1540~1555 DEG C, pulling rate is 1.05~1.15m/min for first furnace tundish temperature control；Non- head
The control of furnace tundish temperature is at 1535~1550 DEG C, 1.05~1.15m/min of casting speed control；Weak intensity is cold in two cold stages uses
But, the middle weak intensity is cooled to the two cold every streamflow controls in one area of stage in 180~200L/min, the every streamflow control in 2nd area
In 150~180L/min, the every streamflow control in 3rd area is in 100~120L/min.
5. the method for refining that ferritic stainless steel is used in welding according to claim 4, it is characterised in that: the AOD furnace smelting
Use 1250 DEG C of temperature > of dephosphorization molten iron of refining process, the wherein mass percentage of main component are as follows: C >=3.0%, Si≤
0.02%, P≤0.03%.
6. the method for refining that ferritic stainless steel is used in welding according to claim 4, it is characterised in that: the AOD furnace smelting
Top gun oxygen pressure is 6~17bar during refining, and blowing oxygen quantity is 60~62m before mentioning rifle3/ ton steel.
7. the method for refining that ferritic stainless steel is used in welding according to claim 4, it is characterised in that: the AOD furnace smelting
It is separately added into ferrochrome, molybdenum-iron, electrolytic manganese and nickel plate during refining and carries out alloying；Decarburization and cr yield after alloying, reduction period add silicon
Iron carries out chromium oxide reduction.
8. the method for refining that ferritic stainless steel is used in welding according to claim 4, it is characterised in that: the LF furnace refining
In the process, argon bottom-blowing time > 12min before casting, 1620~1640 DEG C of upper machine pouring temperature.
9. according to the method for refining of welding ferritic stainless steel described in claim 4-8 any one, it is characterised in that:
In the CC continuous casting process, slow cooling is carried out after steel billet straightening.
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| CN114959179B (en) * | 2022-06-07 | 2023-08-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of stainless steel plate blank for welding strip |
| CN115976410A (en) * | 2022-12-16 | 2023-04-18 | 烟台华新不锈钢有限公司 | Ferritic stainless steel for welding and production and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796585A (en) * | 2004-12-27 | 2006-07-05 | 宝钢集团上海第一钢铁有限公司 | Method for smelting ferritic stainless steel from total molten iron |
| CN103014239A (en) * | 2012-12-27 | 2013-04-03 | 邢台钢铁有限责任公司 | Production method of ER308L steel grade in 300 series stainless steel |
| CN105132819A (en) * | 2015-08-13 | 2015-12-09 | 山西太钢不锈钢股份有限公司 | Continuous rolling method of low-chromium ferrite stainless steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2945058B2 (en) * | 1990-03-22 | 1999-09-06 | 日新製鋼株式会社 | Ferritic stainless steel with excellent high-frequency weld strength |
| JP4987326B2 (en) * | 2006-03-10 | 2012-07-25 | 日新製鋼株式会社 | Surface hardened ferritic stainless steel sheet |
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- 2017-04-07 CN CN201710224477.1A patent/CN107130188B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1796585A (en) * | 2004-12-27 | 2006-07-05 | 宝钢集团上海第一钢铁有限公司 | Method for smelting ferritic stainless steel from total molten iron |
| CN103014239A (en) * | 2012-12-27 | 2013-04-03 | 邢台钢铁有限责任公司 | Production method of ER308L steel grade in 300 series stainless steel |
| CN105132819A (en) * | 2015-08-13 | 2015-12-09 | 山西太钢不锈钢股份有限公司 | Continuous rolling method of low-chromium ferrite stainless steel |
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