CN105936978B - A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel - Google Patents
A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel Download PDFInfo
- Publication number
- CN105936978B CN105936978B CN201610485525.8A CN201610485525A CN105936978B CN 105936978 B CN105936978 B CN 105936978B CN 201610485525 A CN201610485525 A CN 201610485525A CN 105936978 B CN105936978 B CN 105936978B
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- slag
- stainless steel
- slag system
- austenitic stainless
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention belongs to smelting high-nitrogen steel technical field, and in particular to a kind of slag system for the electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that pressurizes.The chemical composition mass percent of slag system of the present invention is：CaF2：57~62%, CaO：16~20%, Al2O3：12~16%, MgO：3~6%, SiO2：0.5~1.5%, remaining is impurity, and impurity content is no more than 0.8%；Wherein, CaO/Al2O3For 1.00~1.67.By controlling CaO, CaO/Al is adjusted2O3Proportionate relationship, and configuration reasonable content CaF2, MgO and SiO2, the nitrogen appearance and nitrogen permeability of slag system are improved, can effectively lift the nitrogen content of austenitic stainless steel, and nitrogen can be made to be uniformly distributed along ingot body, be advantageous to obtain high-quality high-nitrogen austenitic stainless steel.
Description
Technical field
It is more particularly to a kind of in the esr process that pressurizes the present invention relates to a kind of slag system for smelting high-nitrogen steel
Utilize the slag system of gas nitriding smelting high-nitrogen austenitic stainless steel.
Background technology
Nitrogen is strong austenite stabilizer element, and stainless steel can be promoted to form austenite structure.Calculated in nickel equivalent
In, nitrogen equivalent is 30 times of nickel, thus can replace precious metal nickel, or even all substitution nickel with cheap nitrogen, to obtain
Austenitic stainless steel.Generally, austenitic stainless steel of the nitrogen in steel content more than 0.4% is referred to as high-nitrogen austenitic not
Become rusty steel.In high-nitrogen austenitic stainless steel, nitrogen as the interstitial element in steel, by with other alloying elements (Mn, Cr, Mo, V,
Nb and Ti etc.) synergy, the multiple performances such as the intensity of steel, toughness, creep resistance, wearability, corrosion resistance can be improved, because
This high-nitrogen austenitic stainless steel is considered as the new material for most having research and development to be worth in recent years.
At present, the mode of smelting high-nitrogen austenitic stainless steel is broadly divided into addition nitro-alloy method and combination electrode method.Its
In, addition nitro-alloy method (such as nitrided ferro-chromium, nitrogenized manganese, silicon nitride) exists and is produced into though mode is simple and convenient to operate
This height, easily polluted, using Si by impurity in nitro-alloy3N4Easily it is difficult to Si exceeded, nitrogen content lack of homogeneity and nitrogen content
Many problems such as control；Combination electrode method has the advantages that esr process is steady, surface quality is good, but prepared by combination electrode
Complexity, welding compound electric easily make ESR ingot oxygenation.Compared with above two method, gas nitriding method has that cost is low, can keep away
Exempt from the advantages that product is polluted by nitro-alloy, thus be the focus development technology of current high-nitrogen austenitic stainless steel.
Pressurization electroslag remelting is the main method of current commodity production high-nitrogen austenitic stainless steel.In pressurization electroslag remelting mistake
Cheng Zhong, slag system have the function that to hold the balance, and directly affect the effect of gas nitriding.It is to characterize the energy that slag system accommodates nitrogen that nitrogen, which holds,
Power, the slag system that high nitrogen holds are advantageous to gas nitriding.And traditional electroslag remelting slag (such as 70%CaF being widely used at present2+
30%Al2O3, 60%CaF2+ 20%CaO+20%Al2O3And 40%CaF2+ 30%CaO+30%Al2O3) nitrogen hold it is relatively low,
Pressurize during electroslag remelting high-nitrogen austenitic stainless steel, the nitrogen in gas phase not easily passs through slag and entered in steel, thus difficult
To obtain high-nitrogen austenitic stainless steel.
The content of the invention
The problem of existing for traditional slag system, the present invention provide a kind of pressurization electroslag remelting gas nitriding smelting high-nitrogen Ovshinsky
The slag system of body stainless steel, by adjusting the composition of slag system, the nitrogen appearance and nitrogen permeability of slag system are improved, so as to ensure in pressurization electroslag
The high efficiency of gas nitriding during remelting high-nitrogen austenitic stainless steel, the addition of nitro-alloy is reduced, ensureing high nitrogen
On the premise of austenite stainless composition of steel and performance, production cost is reduced.
A kind of chemical composition quality of slag system for the electric slag refusion and smelting high-nitrogen austenitic stainless steel that pressurizes of the present invention
Percentage is：CaF2：57~62%, CaO：16~20%, Al2O3：12~16%, MgO：3~6%, SiO2：0.5~1.5%,
Remaining is impurity, and impurity content is no more than 0.8%；Wherein, CaO/Al2O3For 1.00~1.67.
A kind of fusion temperature of the slag system of above-mentioned pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel is
1250~1325 DEG C.
A kind of slag system of above-mentioned pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel is glutinous at 1500 DEG C
Spend for 0.028~0.035Pas.
A kind of electricity of the slag system of above-mentioned pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel at 1500 DEG C
Resistance rate is 0.316~0.408 Ω cm.
A kind of nitrogen of the slag system of above-mentioned pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel at 1500 DEG C
Hold for (0.906~1.309) × 10-13。
A kind of preparation of the slag system for pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that the present invention completes
Method is：High-purity fluorite, lime, commercial alumina, fused magnesite and silica are used as raw material, is weighed according to mentioned component proportioning
After raw material, it is well mixed；At 1550 DEG C~1580 DEG C fritting and stir at least 30 minutes, then by slag fall in cold in steel tank
But solidify to room temperature；It is 0~10mm to be finally crushed to granularity, is used so as to prepare pressurization electroslag remelting high-nitrogen austenitic stainless steel
Slag system.
A kind of application method of the slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention
For：Arc ring and 0.45 ± 0.05kg strikings bits with institute smelting high-nitrogen austenitic stainless steel phase same material are put into consutrode
On following pressurization electroslag furnace bottom water tank；After the pre-melted slag prepared is toasted into 4h~6h at 500 DEG C~700 DEG C, all add
Enter into pressurization electroslag furnace crystallizer；Closed working chamber, the air being filled with nitrogen purge working chamber, carry out the solid-state starting the arc and make
Slag；After the completion of slag making, the nitrogen pressure in working chamber, Synchronous lifting crystallizer cooling water pressure are gradually stepped up, and improve electricity
Stream and voltage, carry out eutectic speed pressurization electroslag remelting gas nitriding melting；By step-by-step movement charger according to 0.4kg~0.7kg/
The ratio of ton steel is continuously added aluminum shot or calcium-silicon deoxidation；After pressurization electroslag remelting feeding terminates, open pressurization electroslag furnace and put
Air valve pressure release, the synchronous cooling water pressure that reduces after steel ingot completely cooling, deviate from steel ingot to normal pressure.
A kind of slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention is with CaF2For base,
Content is 57~62%, is not only advantageous to reduce slag fusing point, and the nitrogen for being favorably improved slag system holds and the permeability of nitrogen；To protect
Card has higher basicity, obtains good electroslag remelting desulfurized effect, and improves nitrogen appearance, and 16~20% CaO is added into slag；
In order to further promote the molten nitrogen of slag system, CaO/Al is adjusted2O3For 1.00~1.67, Al is made2O3Addition be 12~16%；For
Ensure that the nitrogen of slag system holds and nitrogenizing effect, SiO in slag2Content need to control 0.5~1.5%；Add 3 in slag simultaneously~
6% MgO, to replace part CaO.
Theory analysis shows with result of study：
Be primarily present form of the nitrogen in slag is free nitrogen (N3-) and non-crossover nitrogen (N-), the nitrogen of both forms can be with
Aluminium and silicon in slag form following network structure：
Addition CaO can contribute to nitrogen with N with the above-mentioned network structure of depolymerization3-And N-Form dissolving, and diffuse to molten steel
In.Meanwhile work as CaO/Al2O3CaF is added when relatively low2Contribute to the molten nitrogen of slag system.
A kind of nitrogen of the slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention holds definition
Formula is：
Wherein, CNIt is that nitrogen holds；(%N) is the nitrogen content in slag when slag reaches balance with nitrogen；It is partial pressure of oxygen；It is nitrogen partial pressure.
The present invention provides a kind of slag system for the electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that pressurizes, and its feature exists
In the slag system be high nitrogen solid-holding system.At 1500 DEG C, the calculation formula that slag system nitrogen holds is as described below：
logCN=7.442 Λ -19.05
In formula：Λ=(Σ xAnAΔA+xBnBΔB+....)/(ΣxAnA+xBnB+....)；xiRubbed for each constituent element in slag system
That fraction；niFor the molal quantity of each constituent element in slag system；ΔiFor the optical basicity of each constituent element in slag system；CNHold for the nitrogen of slag system.
A kind of slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention and traditional electroslag
It is as shown in table 1 that the nitrogen of remelting slag system holds result of calculation.As can be seen from the table, compared with traditional slag system, one kind of the invention adds
Press the nitrogen appearance of the slag system of electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel higher, be advantageous to the esr process that pressurizes
Middle gas nitriding is smoothed out.
The nitrogen of 1 slag system of the present invention of table and traditional electroslag remelting slag, which holds, to be contrasted, wt.%
It with the addition of in a kind of slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention few
The SiO of amount2.Because eutectic speed pressurization electroslag remelting easily causes ESR ingot surface defect, a small amount of SiO is added2Slag system can be avoided to stick
Degree declines and undergone mutation with temperature, and slag system is had good intensity and high-temp plastic, so as to improve high-nitrogen austenitic
The surface quality of stainless steel ESR ingot.But the SiO of high level2The oxidizable melting loss of elements such as Al, Ti in steel is easily caused, and significantly
The nitrogen that degree reduces slag system holds and nitrogenizing effect, so this slag system is by SiO2It is limited between 0.5~1.5%.
3 are with the addition of in a kind of slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present invention~
6% MgO, part CaO is substituted, causes slag system to get damp again to prevent CaO too high, increases the water content of slag, cause the electroslag that pressurizes
Hydrogen, oxygen content are exceeded in stove smelting high-nitrogen austenitic stainless steel.
The slag system of a kind of electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that pressurizes proposed by the present invention, in tradition
On the basis of slag system, CaO/Al is adjusted by controlling CaO2O3Proportionate relationship, and configure the CaF of reasonable content2, MgO and
SiO2, so as to obtain a kind of slag system for the electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that pressurizes, the slag system has
Rational physical characteristic, higher nitrogen holds and excellent nitrogen permeability, can effectively lift the nitrogen content of austenitic stainless steel,
And nitrogen can be made to be evenly distributed along ingot body, be advantageous to obtain high-quality high-nitrogen austenitic stainless steel.
Embodiment
Describe the embodiment of the present invention, but the embodiment not office of the present invention in detail with reference to embodiment
It is limited to following embodiments.
Embodiment 1
The chemical composition matter of the slag system of the pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present embodiment
Measuring percentage is：CaF2：59.3%, A12O3：15%, CaO：18%, MgO：6%, SiO2：1%, remaining is impurity.The slag system
Fusion temperature be 1270 DEG C；At a temperature of 1500 DEG C, the resistivity of the slag system is 0.381 Ω cm, viscosity 0.033Pa
S, it is 1.046 × 10 that nitrogen, which holds,-13。
The preparation method of the slag system is：High-purity fluorite, lime, commercial alumina, fused magnesite and silica are used as raw material,
After weighing raw material according to mentioned component proportioning, it is well mixed；Using three-phase slugging stove, fritting 35 minutes, melting are electric at 1560 DEG C
Flow for 1500A, voltage 35V, then fall slag in cooled and solidified in steel tank to room temperature；0~10mm is finally crushed to, so as to
Prepare pressurization electroslag remelting high-nitrogen austenitic stainless steel slag system.
Use above-mentioned pre-melted slag pressurization electroslag remelting 200kg 18Cr2Mo0.5N steel (target nitrogen content for 0.4~
0.6%).The vacuum melting furnace that consutrode mother metal is protected by nitrogen, which is smelted, to be obtained, and be forged into diameter of phi 130mm from power consumption
Pole, its composition are as follows：
The application method of the slag system is：It will be put with the arc ring and 0.44kg strikings of 18Cr2Mo0.5N steel phase same materials bits
On pressurization electroslag furnace bottom water tank below to consutrode；After the pre-melted slag prepared is toasted into 5h at 600 DEG C, all add
It is quantity of slag 9kg in 220mm crystallizers to diameter D；Closed pressurization electroslag furnace working chamber, is filled with nitrogen purge；Solid-state is carried out to rise
Arc slag making, slugging voltage are 38V, and slugging electric current is 2300A, and the slugging time is 24 minutes, completes slag making；After the completion of slag making,
The nitrogen pressure in working chamber is gradually stepped up to 1.6MPa, Synchronous lifting pressurization electroslag furnace crystallizer cooling water pressure is extremely
1.6MPa, electroslag remelting gas nitriding melting of pressurizeing is carried out, it is respectively 3800A and 42V to smelt electric current and voltage, and molten speed is
89kg/h；The aluminum shot for adding gross weight 110g using step-by-step movement charger simultaneously carries out deoxidation.After pressurization electroslag remelting feeding terminates,
Pressurization electroslag furnace vent valve pressure release is opened, the synchronous cooling water pressure that reduces after steel ingot completely cooling, deviates from steel ingot to normal pressure.
The electroslag remelting 18Cr2Mo0.5N ingot compositions that pressurize are as follows：
Smelt and the nitrogen content of different parts is analyzed after terminating, it is as a result as shown in the table：
From upper table, it can be seen that, the ESR ingot obtained by this reaches target steel grade 18Cr2Mo0.5N requirement of nitrogen,
Nitrogen is evenly distributed along ingot body, and ESR ingot surface quality is good, the defects of no slag runner, dross, pipe, fold, slag inclusion.
Embodiment 2
The chemical composition matter of the slag system of the pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel of the present embodiment
Measuring percentage is：CaF2：61.7%, A12O3：12%, CaO：20%, MgO：5%, SiO2：0.5%, remaining is impurity.The slag
The fusion temperature of system is 1260 DEG C；At a temperature of 1500 DEG C, the resistivity of the slag system is 0.318 Ω cm, and viscosity is
0.030Pas, it is 1.288 × 10 that nitrogen, which holds,-13。
The preparation method of the slag system is：High-purity fluorite, lime, commercial alumina, fused magnesite and silica are used as raw material,
After weighing raw material according to mentioned component proportioning, it is well mixed；Using three-phase slugging stove, fritting 40 minutes, melting are electric at 1570 DEG C
Flow for 1500A, voltage 35V, then fall slag in cooled and solidified in steel tank to room temperature；0~10mm is finally crushed to, so as to
Prepare pressurization electroslag remelting high-nitrogen austenitic stainless steel slag system.
Use above-mentioned pre-melted slag pressurization electroslag remelting 200kg 23Cr4Ni2Mo0.75N steel (target nitrogen content for 0.6~
0.8%).The vacuum melting furnace that consutrode mother metal is protected by nitrogen, which is smelted, to be obtained, and be forged into diameter of phi 130mm from power consumption
Pole, its composition are as follows：
Smelt and the nitrogen content of different parts is analyzed after terminating, it is as a result as shown in the table：
From upper table, it can be seen that, the ESR ingot obtained by this reaches target steel grade 23Cr4Ni2Mo0.75N nitrogen content
It is required that nitrogen is evenly distributed along ingot body, ESR ingot surface quality is good, no slag runner, dross, pipe, fold, slag inclusion.
Claims (3)
1. a kind of slag system for the electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel that pressurizes, it is characterised in that the slag system
Composition is CaF by weight percentage2：57~62%, CaO：16~20%, Al2O3：12~16%, MgO：3~6%, SiO2：
0.5~1.5%, remaining is impurity, and impurity content is no more than 0.8%；Wherein, CaO/Al2O3For 1.00~1.67；Slag system melts
It is 1250~1325 DEG C to change temperature；Slag system is 0.028~0.035Pas in 1500 DEG C of viscosity, resistivity is 0.316~
0.408 Ω cm, it is (0.906~1.309) × 10 that nitrogen, which holds,-13。
A kind of 2. system of the slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel as claimed in claim 1
Preparation Method, it is characterised in that methods described includes：Use high-purity fluorite, lime, commercial alumina, fused magnesite and silica for
Primary raw material, it is by weight percentage CaF2：57~62%, CaO：16~20%, Al2O3：12~16%, MgO：3~6%,
SiO2：0.5~1.5%, after remaining weighs raw material for the composition proportion of impurity, it is well mixed；It is pre- at 1550 DEG C~1580 DEG C
Melt and stir at least 30 minutes, then fall slag in cooled and solidified in steel tank to room temperature；It is 0~10mm to be finally crushed to granularity
Prepare pressurization electroslag remelting high-nitrogen austenitic stainless steel slag system.
3. a kind of slag system of pressurization electroslag remelting gas nitriding smelting high-nitrogen austenitic stainless steel as claimed in claim 1 makes
With method, it is characterised in that methods described includes：By with the arc ring of institute smelting high-nitrogen austenitic stainless steel phase same material and
0.45 ± 0.05kg strikings bits are put on the pressurization electroslag furnace bottom water tank below consutrode；The pre-melted slag prepared is existed
All it is added in pressurization electroslag furnace crystallizer after toasting 4h~6h at 500 DEG C~700 DEG C；Closed working chamber, it is filled with nitrogen row
Air in empty working chamber, carry out solid-state starting the arc slag making；After the completion of slag making, the nitrogen pressure in working chamber is gradually stepped up, together
Step lifting crystallizer cooling water pressure, and electric current and voltage are improved, carry out eutectic speed pressurization electroslag remelting gas nitriding melting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610485525.8A CN105936978B (en) | 2016-06-24 | 2016-06-24 | A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610485525.8A CN105936978B (en) | 2016-06-24 | 2016-06-24 | A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105936978A CN105936978A (en) | 2016-09-14 |
| CN105936978B true CN105936978B (en) | 2017-12-29 |
Family
ID=56873134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610485525.8A Active CN105936978B (en) | 2016-06-24 | 2016-06-24 | A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105936978B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756485B (en) * | 2016-12-13 | 2019-01-08 | 东北大学 | A method of pressurization induction prepares high nitrogen steel with electroslag furnace under protective Ar gas remelting duplex |
| CN108315563B (en) * | 2017-12-19 | 2020-02-14 | 重庆材料研究院有限公司 | Electroslag remelting slag system of super duplex stainless steel |
| CN108193130A (en) * | 2017-12-28 | 2018-06-22 | 辽宁福鞍重工股份有限公司 | A kind of method for centrifuging electroslag smelting casting production high ferro brake disc |
| CN112458304A (en) * | 2020-11-02 | 2021-03-09 | 抚顺特殊钢股份有限公司 | Electroslag remelting slag system for smelting ultra-low-carbon low-aluminum high-titanium maraging steel |
| CN114854993A (en) * | 2022-03-30 | 2022-08-05 | 重庆材料研究院有限公司 | Seawater corrosion resistant high-strength stainless steel electroslag remelting slag system |
| CN115386735A (en) * | 2022-07-21 | 2022-11-25 | 重庆材料研究院有限公司 | Electroslag remelting slag system for controlling nitrogen content in alloy |
| CN115896470A (en) * | 2022-12-27 | 2023-04-04 | 二重（德阳）重型装备有限公司 | Electroslag remelting method for ultra-pure ultra-low-carbon nitrogen-controlled austenitic stainless steel for nuclear power |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| CN101654742A (en) * | 2008-08-22 | 2010-02-24 | 宝山钢铁股份有限公司 | Electroslag remelting slag system with low hydrogen permeability, preparation method and using method thereof |
| CN102994768A (en) * | 2012-08-13 | 2013-03-27 | 西峡县恒冠冶金材料有限公司 | Electro-slag re-melting slag and preparation method thereof |
| CN103468965A (en) * | 2013-09-25 | 2013-12-25 | 安徽工业大学 | Electro-slag remelting refining slag efficiently utilizing return slag and preparing method and application method thereof |
| CN104561570A (en) * | 2013-09-25 | 2015-04-29 | 安徽工业大学 | Using method of electroslag remelting refining slag by efficiently using returned slag |
| CN105316487A (en) * | 2015-04-10 | 2016-02-10 | 东北大学 | Slag system for electroslag-remelted high-Ti and low-Al high-temperature alloy and using method of slag system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2951196B1 (en) * | 2009-10-12 | 2011-11-25 | Snecma | DEGASTING STAINLESS STEEL MARTENSITIC STEELS BEFORE REFUSAL UNDER DICE |
-
2016
- 2016-06-24 CN CN201610485525.8A patent/CN105936978B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| CN101654742A (en) * | 2008-08-22 | 2010-02-24 | 宝山钢铁股份有限公司 | Electroslag remelting slag system with low hydrogen permeability, preparation method and using method thereof |
| CN102994768A (en) * | 2012-08-13 | 2013-03-27 | 西峡县恒冠冶金材料有限公司 | Electro-slag re-melting slag and preparation method thereof |
| CN103468965A (en) * | 2013-09-25 | 2013-12-25 | 安徽工业大学 | Electro-slag remelting refining slag efficiently utilizing return slag and preparing method and application method thereof |
| CN104561570A (en) * | 2013-09-25 | 2015-04-29 | 安徽工业大学 | Using method of electroslag remelting refining slag by efficiently using returned slag |
| CN105316487A (en) * | 2015-04-10 | 2016-02-10 | 东北大学 | Slag system for electroslag-remelted high-Ti and low-Al high-temperature alloy and using method of slag system |
Non-Patent Citations (6)
| Title |
|---|
| "Mn18Cr18N护环钢电渣重熔工艺的研究";赵林等;《大型铸锻件》;19971231(第3期);正文第22-27页 * |
| "电渣冶金用含氟渣系电导率计算方法";董艳伍等;《材料与冶金学报》;20121231;第11卷(第4期);正文第274-277页 * |
| "电渣连铸锭表面质量的影响因素";刘福斌等;《特殊钢》;20090630;第30卷(第3期);正文第22-24页 * |
| "电渣重熔冶金过程炉渣黏度性能研究";李小孟等;《金属世界》;20151231(第5期);正文第56左栏、57页右栏、58页表3和第59页结束语 * |
| "电渣重熔高温合金渣系对冶金质量的影响";李星等;《钢铁》;20150930;第50卷(第9期);正文第41-46页 * |
| "高氮不锈钢开发和应用的最新进展";姜周华等;《第十届中国钢铁年会暨第六届宝钢学术年会论文集》;20151021;正文第1487-1497页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105936978A (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105936978B (en) | A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high-nitrogen austenitic stainless steel | |
| CN105734302B (en) | GH4169 steel alloy electroslag remelting refining slags and its method for carrying out electroslag remelting to GH4169 steel alloys | |
| CN110453085B (en) | Slag system for electroslag remelting B-type 9 Cr-containing heat-resistant steel, preparation method and use method | |
| CN105950883B (en) | A kind of electroslag remelting gas nitriding that pressurizes prepares the slag system of high nitrogen martensitic stain less steel | |
| CN107513641A (en) | A kind of technique for preparing advanced ultra supercritical heat-resisting alloy | |
| CN111057937A (en) | Electrothermal alloy iron-chromium-aluminum wire material and preparation method thereof | |
| CN108907494A (en) | Nuclear power AG728 steel electrode and preparation method | |
| CN105018789A (en) | Casting titanium alloy and preparation method thereof | |
| CN110172648A (en) | Zirconium-containing electrothermal alloy and preparation method of zirconium-containing alloy | |
| CN106048416B (en) | A kind of control method of precipitation hardenable martensitic stain less steel delta ferrite | |
| CN114196854A (en) | High-strength and difficult-to-deform nickel-based high-temperature alloy and preparation method thereof | |
| CN106011360A (en) | Smelting technology of high-strength low-stress gray pig iron | |
| CN1040666C (en) | Production process of ferro-titanium alloy | |
| CN104404356B (en) | A kind of return material method of smelting of impeller martensitic stain less steel | |
| CN106591637A (en) | Aluminum-niobium-boron intermediate alloy and preparation method thereof | |
| CN105624481A (en) | Aluminium product preparation technology capable of reducing cost and energy consumption | |
| CN108950273A (en) | A kind of intermediate alloy and its preparation method and application | |
| CN105603257A (en) | Production method of high-quality ferrotitanium | |
| CN106636850B (en) | High-temperature oxidation resistance high intensity mixes rare-earth alloy material and preparation method | |
| CN108950269A (en) | A kind of smelting process controlling impurity content in K438 master alloy | |
| CN107653408A (en) | A kind of almag ingot casting and preparation method thereof | |
| CN100371481C (en) | Method for producing high titanium iron contg. low oxygen and low nitrogen | |
| CN110241342A (en) | A kind of high Mn content aluminium manganese intermediate alloy and preparation method thereof | |
| CN103757463B (en) | copper-phosphorus alloy and preparation method thereof | |
| CN106244854B (en) | Nickel-base alloy and its manufacture method with high-wear resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |