CN107400836A - A kind of magnesium metal calcium smelting reductive jar and its casting technique - Google Patents
A kind of magnesium metal calcium smelting reductive jar and its casting technique Download PDFInfo
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- CN107400836A CN107400836A CN201710036838.XA CN201710036838A CN107400836A CN 107400836 A CN107400836 A CN 107400836A CN 201710036838 A CN201710036838 A CN 201710036838A CN 107400836 A CN107400836 A CN 107400836A
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- reductive jar
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- slag
- magnesium metal
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- 230000002829 reductive effect Effects 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000005266 casting Methods 0.000 title claims abstract description 30
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000003723 Smelting Methods 0.000 title claims abstract description 29
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 25
- 239000011575 calcium Substances 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000006004 Quartz sand Substances 0.000 claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 20
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 16
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 23
- 239000011651 chromium Substances 0.000 claims description 19
- 238000007670 refining Methods 0.000 claims description 13
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 12
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 150000002910 rare earth metals Chemical class 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 238000005275 alloying Methods 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 238000010790 dilution Methods 0.000 claims description 6
- 239000012895 dilution Substances 0.000 claims description 6
- 239000010436 fluorite Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 3
- 229910001145 Ferrotungsten Inorganic materials 0.000 claims description 3
- -1 Gao Ge Chemical compound 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- RIVZIMVWRDTIOQ-UHFFFAOYSA-N cobalt iron Chemical compound [Fe].[Co].[Co].[Co] RIVZIMVWRDTIOQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims 1
- 239000010453 quartz Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241001313855 Bletilla Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003860 storage Methods 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
-
- 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- C22B26/22—Obtaining magnesium
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—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
-
- 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
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- 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)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of magnesium metal calcium smelting reductive jar and its casting technique, including the composition of tank body and reductive jar external application material composition：The composition of tank body includes following percentage by weight：Cr 20% 22%, Ni 6% 6.9%, Si 0.7% 1.3%, N 0.1% 0.15%, RE 0.2% 0.4%, C 0.23% 0.28%, Mn 0.8% 1.2%, Ti 0.8% 1.2%, Co 0.5% 0.8%, W 0.5% 1.0%, S≤0.035%, P≤0.040%, remaining：Fe is supplied；The outer compress material of reductive jar includes following component：The mesh of quartz sand 20 40.The present invention on the basis of conventional can by adding Co, W and Ti composition, further increase the Properties of High Temperature Creep of reductive jar, so that the service life of reductive jar is increased, and because increased material price is moderate, the unit cost of production of reductive jar is reduced, and pass through its specific casting technique, in casting process, the perfect globality of reductive jar, the density and intensity of reductive jar are strengthened, further improve the service life of reductive jar and reduce the production cost of reductive jar.
Description
Technical field
The present invention relates to non-ferrous metal metallurgy technical field, specially a kind of magnesium metal calcium smelting reductive jar and its casting
Technique.
Background technology
Magnesium is a kind of malleable silvery white non-ferrous metal of lightweight.Because of its rich reserves, excellent performance and have a extensive future,
It is widely used in the fields such as military project, space flight, traffic and 3C.
Calcium is quite hard and light silvery white non-ferrous metal, can be added as the alloy of Al, Cu, Pb, Mg and otheralkali metal
Agent, the deoxidier of steel-making, the getter of electron tube and the dehydrating agent of organism etc., it is the Chaoyang gold gradually to grow up in recent years
Category.
The production of metal calcium and magnesium uses thermal reduction technique productions, is below the basic working procedure of hot method：Material storage, ore
Several processes such as (dolomite, lime stone) calcining, grinding, dispensing, mixing, pressure ball, reduction, crude metal refining and packaging.
Reduction process be exactly the ore that will be suppressed forge bletilla other reaction auxiliary additives made of pelletizing load reduction
Tank produces the process of crude metal in high temperature and heated under vacuum.The key equipment that the process needs to use is reductive jar.
At present, main consumable equipment used in most of Lian Mei factories is magnesium smelting reduction pot, and its material is mostly
ZG35Cr24Ni7SiN, held high because the reductive jar of this material contains element, the furnace charge prices such as a large amount of valuable nickel, molybdenum and chromium
It is expensive, therefore production cost is remained high, and in order to reduce production cost, useless reductive jar often is reclaimed into remelting, and simply reclaim
Remelting can cause quality extremely unstable, because magnesium smelting reduction pot is in the outside high-temperature oxydation flame for being 1200 DEG C or so, inner chamber
Under vacuum (10Pa) state, therefore carry out periodicity production (being 8-12h per the stove production cycle) and easily cause serious oxygen
Change corrosion and heat resistance decline, i.e., the intensity under the condition of high temperature declines, and high temperature microstructure is unstable etc..
The reductive jar suitable for Smelting magnesium is such as proposed in Chinese patent CN 2448849, it is simply simple from reductive jar
Structure on be modified, be not improved reductive jar service life and reduce reductive jar casting cost, therefore, with regard to how
The service life of magnesium reduction jar is improved, reduces the cost of manufacture of reductive jar, we have proposed a kind of magnesium metal calcium smelting reduction
Tank and its casting technique.
The content of the invention
(1) technical problem solved
In view of the shortcomings of the prior art, the invention provides a kind of magnesium metal calcium smelting reductive jar and its casting technique,
Solve the problems, such as that existing reductive jar service life is not high and cost of manufacture is high.
(2) technical scheme
To achieve the above object, the present invention provides following technical scheme：A kind of magnesium metal calcium smelting reductive jar, including tank
The composition and reductive jar external application material composition of body：
The composition of tank body includes following percentage by weight：
Cr 20%-22%, Ni 6%-6.9%, Si 0.7%-1.3%, N 0.1%-0.15%, RE 0.2%-
0.4%th, C 0.23%-0.28%, Mn 0.8%-1.2%, Ti 0.8%-1.2%, Co 0.5%-0.8%, W 0.5%-
1.0%th, S≤0.035%, P≤0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：Quartz sand 20-40 mesh.
A kind of casting technique of magnesium metal calcium smelting reductive jar, its casting technique comprise the following steps：
S1, melting；
S2, tapping；
S3, centrifuge operations；
S4, tank bottom cast.
Preferably, a kind of magnesium metal calcium smelting reductive jar, including the composition of tank body and reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 20%, Ni 6%, Si 0.7%, N 0.1%, RE 0.2%, C 0.23%, Mn 0.8%, Ti 0.8%,
Co 0.5%, W 0.5%, S 0.020%, P≤0.025%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 20.
Preferably, a kind of magnesium metal calcium smelting reductive jar, including the composition of tank body and reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 21%, Ni 6.5%, Si 1%, N 0.13%, RE 0.3%, C 0.25%, Mn 1%, Ti 1%, Co
0.67%th, W 0.8%, S 0.030%, P≤0.030%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 30.
Preferably, a kind of magnesium metal calcium smelting reductive jar, including the composition of tank body and reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 22%, Ni 6.9%, Si 1.3%, N 0.15%, RE 0.4%, C 0.28%, Mn 1.2%, Ti
1.2%th, Co 0.8%, W 1.0%, S 0.035%, P 0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 40.
Preferably, the specific method of smelting in the step S1 comprises the following steps：
A, check whether electric cabinet circuit element and water route etc. are normal, and whether furnace lining stands intact before blow-on, otherwise should be timely
Fix, allow power transmission after all going well；
B, infusibility and not oxidizable material first add, as 20%-22%Cr, 6%-6.9%Ni, 0.7%-1.3%Si,
0.1%-0.15%N, 0.2%-0.4%RE, 0.23%-0.28%C, 0.8%Mn and residual F e compositions low chromium, Gao Ge, nickel
Plate, chromium nitride, steel scrap, useless reductive jar, ferro-cobalt, ferrotungsten and ferrotianium etc., should accomplish during charging closely knit, prevent arch formation；
C, stainless steel should be selected conscientiously, and not handy no magnetic etc. mixes kind and replaces stainless steel, and the indefinite person of composition does not have to, right
Closed oil-containing, rustless steel container that is aqueous or having other impurity, it is necessary to which cutting and elimination, drying rear can be used；
D, be powered fusing after feeding, and furnace temperature is about 1550 DEG C and skimmed, it is necessary to which the slag on surface is scratched clean；
E, alloying is carried out after having taken off slag, the time of alloying first carries out initial refining, in furnace temperature between 5-10 minutes
Initial refining is carried out at about 1500 DEG C, 1/3 ferromanganese and silicon of 0.7%-1.3%Si, 0.8%Mn and residual F e compositions is added, expands
Dissipate deoxidation, wait ferromanganese and silicon be dissolved after add lime covering molten steel and require that slag bleaches, add Fluorspar Powder dilution slag, have good
Mobility, claw slag and carry out double refining, 1550 DEG C of double refining furnace temperature adds the 1/2 of remaining ferromanganese and silicon, treats stone
Ash covering Fluorspar Powder dilution claws slag, adds remaining ferromanganese and silicon and carries out final deoxidizing, 1600 DEG C of final deoxidizing temperature, composition is adjusted
It is whole to finish addition rare earth ferroalloy, tapped when waiting 15 minutes and be adjusted to 1620-1640 DEG C of furnace temperature.
Preferably, the specific tapping method in the step S2 is：Tapping before by ladle and tundish be preheated to 500 DEG C with
On, rare earth is placed in ladle, and oxygen-containing experiment is done in advance, it is as qualified to shrink, and then slag exists with impulsive motion rare earth, molten steel is gone out
Calmed in ladle 5-8 minutes, and carry out secondary slagging-off, secondary slagging-off must remove it is clean, and clear up ladle edge slagging and
Insulation is covered outside the ladle that the debris such as steel grit are taken off, prepares cast.
Preferably, the centrifuge operations method in the step S3 comprises the following steps：
A, the prior end cap temperature for preparing was loaded into type tube in 100 DEG C of end caps for brushing coating in 20 minutes before cast, it is necessary to
Urgent steel pin, sealing is tight, can use, forbid bleed-out.14-16 kilograms of quartz sand sand groove will be housed and be sent into baking in type tube；
B, about 5 minutes startup centrifuges when revolution reaches 400 turns per minute, slowly rotate loose sand groove before cast, will
Quartz sand is uniformly sprinkled into type tube, and checks whether stucco is intact and is pushed into tundish；
C, after molten steel reaches catch time, when reaching pouring temperature, revolution is adjusted to 850-900 revs/min, ladle
Tundish is directed at, prepares cast, pouring temperature is controlled at 1480-1520 DEG C, that is, molten steel surface journey kermesinus, has freeze soon
Phenomenon is poured into a mould；
When d, pouring into a mould, from slow to fast, flow changes from small to big speed, slowly cast, when molten steel is flushed to the other end of type tube,
Poring rate is increased, prevents slag from getting into type tube, duration of pouring control was completed in 50 seconds；
E, after casting complete, ladle is placed on the ground, clears up bag mouth slagging, and the good bag mouth of maintenance, the debris in bag is cleared up
Totally, in case secondary use；
F, revolution is reduced after centrifuge turns 5 minutes according to 850-900 revs/min of revolution after casting complete 300 rev/min 5
Minute, then parking prepares tank；
G, penetrating in type tube and connect front end speed demoulding steel will be soon；
H, steadily tank is pulled out with hoisting machine, must not pay attention to and arbitrarily collide hot tank, to prevent influenceing presentation quality；
I, can body is pulled out, carries out Temperature fall, ensure can body normal contraction.
Preferably, the centrifuge operations method in the step S4 comprises the following steps：
A, tank bottom mould is mixed with sodium silicate, quartz sand must fill bed-sit, bed-sit in the case of 700 DEG C before
Material, the light temperature of dry and wet are advisable, and tank bottom mould temperature brushes coating when being down to 100 DEG C, and the debris cleared up in mould simultaneously covers lid；
B, it is fast after tank bottom is first slow during 700 DEG C of cast of preheated mold before cast, ignited, ignited to dip in gear slag by special messenger,
Prevent slag from entering mould, kept off slag by its duration and degree of heating be put into below mould among husky hole ignite, the gas lead body allowed in mould
Outside, pour steel is poured onto lid half and is defined, and covers Insulation, to ensure the thermojunction edge of tank bottom；
C, completely into dark red, mould turnover takes out tank bottom and simultaneously covers loose sand the molten steel in tank bottom mould, ensures normal contraction, has bright
It is aobvious shrink to be qualified, do not shrink for waste product.
(3) beneficial effect
The invention provides a kind of magnesium metal calcium smelting reductive jar and its casting technique.Possesses following beneficial effect：
For the present invention by adding Co, W and Ti composition on the basis of conventional can, the high temperature resistance for further increasing reductive jar is compacted
Become performance so that the service life of reductive jar is increased, and because increased material price is moderate, reduces reductive jar
The unit cost of production, and by its specific casting technique, in casting process, the perfect globality of reductive jar, strengthen
The density and intensity of reductive jar, further improve the service life of reductive jar and reduce the production cost of reductive jar.
Brief description of the drawings
Fig. 1 is the structural representation of reductive jar of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, the present invention provides a kind of technical scheme：A kind of magnesium metal calcium smelting reductive jar, including tank body
Composition and reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 20%-22%, Ni 6%-6.9%, Si 0.7%-1.3%, N 0.1%-0.15%, RE 0.2%-
0.4%th, C 0.23%-0.28%, Mn 0.8%-1.2%, Ti 0.8%-1.2%, Co 0.5%-0.8%, W 0.5%-
1.0%th, S≤0.035%, P≤0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：Quartz sand 20-40 mesh.
A kind of casting technique of magnesium metal calcium smelting reductive jar, its casting technique comprise the following steps：
S1, melting；
S2, tapping；
S3, centrifuge operations；
S4, tank bottom cast.
Specific method of smelting in wherein step S1 comprises the following steps：
A, check whether electric cabinet circuit element and water route etc. are normal, and whether furnace lining stands intact before blow-on, otherwise should be timely
Fix, allow power transmission after all going well；
B, infusibility and not oxidizable material first add, as 20%-22%Cr, 6%-6.9%Ni, 0.7%-1.3%Si,
0.1%-0.15%N, 0.2%-0.4%RE, 0.23%-0.28%C, 0.8%Mn and residual F e compositions low chromium, Gao Ge, nickel
Plate, chromium nitride, steel scrap, useless reductive jar, ferro-cobalt, ferrotungsten and ferrotianium etc., should accomplish during charging closely knit, prevent arch formation；
C, stainless steel should be selected conscientiously, and not handy no magnetic etc. mixes kind and replaces stainless steel, and the indefinite person of composition does not have to, right
Closed oil-containing, rustless steel container that is aqueous or having other impurity, it is necessary to which cutting and elimination, drying rear can be used；
D, be powered fusing after feeding, and furnace temperature is about 1550 DEG C and skimmed, it is necessary to which the slag on surface is scratched clean；
E, alloying is carried out after having taken off slag, the time of alloying first carries out initial refining, in furnace temperature between 5-10 minutes
Initial refining is carried out at about 1500 DEG C, 1/3 ferromanganese and silicon of 0.7%-1.3%Si, 0.8%Mn and residual F e compositions is added, expands
Dissipate deoxidation, wait ferromanganese and silicon be dissolved after add lime covering molten steel and require that slag bleaches, add Fluorspar Powder dilution slag, have good
Mobility, claw slag and carry out double refining, 1550 DEG C of double refining furnace temperature adds the 1/2 of remaining ferromanganese and silicon, treats stone
Ash covering Fluorspar Powder dilution claws slag, adds remaining ferromanganese and silicon and carries out final deoxidizing, 1600 DEG C of final deoxidizing temperature, composition is adjusted
It is whole to finish addition rare earth ferroalloy, tapped when waiting 15 minutes and be adjusted to 1620-1640 DEG C of furnace temperature.
Wherein, the specific tapping method in step S2 is：Ladle and tundish are preheated to more than 500 DEG C before tapping, will
Rare earth is placed in ladle, and does oxygen-containing experiment in advance, and it is as qualified to shrink, and then slag is with impulsive motion rare earth is gone out, and molten steel is in ladle
In calm 5-8 minutes, and carry out secondary slagging-off, secondary slagging-off must remove clean, and clear up slagging and the steel grit at ladle edge
Insulation is covered outside the ladle taken off Deng debris, prepares cast.
Centrifuge operations method in wherein step S3 comprises the following steps：
A, the prior end cap temperature for preparing was loaded into type tube in 100 DEG C of end caps for brushing coating in 20 minutes before cast, it is necessary to
Urgent steel pin, sealing is tight, can use, forbid bleed-out.14-16 kilograms of quartz sand sand groove will be housed and be sent into baking in type tube；
B, about 5 minutes startup centrifuges when revolution reaches 400 turns per minute, slowly rotate loose sand groove before cast, will
Quartz sand is uniformly sprinkled into type tube, and checks whether stucco is intact and is pushed into tundish；
C, after molten steel reaches catch time, when reaching pouring temperature, revolution is adjusted to 850-900 revs/min, ladle
Tundish is directed at, prepares cast, pouring temperature is controlled at 1480-1520 DEG C, that is, molten steel surface journey kermesinus, has freeze soon
Phenomenon is poured into a mould；
When d, pouring into a mould, from slow to fast, flow changes from small to big speed, slowly cast, when molten steel is flushed to the other end of type tube,
Poring rate is increased, prevents slag from getting into type tube, duration of pouring control was completed in 50 seconds；
E, after casting complete, ladle is placed on the ground, clears up bag mouth slagging, and the good bag mouth of maintenance, the debris in bag is cleared up
Totally, in case secondary use；
F, revolution is reduced after centrifuge turns 5 minutes according to 850-900 revs/min of revolution after casting complete 300 rev/min 5
Minute, then parking prepares tank；
G, penetrating in type tube and connect front end speed demoulding steel will be soon；
H, steadily tank is pulled out with hoisting machine, must not pay attention to and arbitrarily collide hot tank, to prevent influenceing presentation quality；
I, can body is pulled out, carries out Temperature fall, ensure can body normal contraction.
Centrifuge operations method in wherein step S4 comprises the following steps：
A, tank bottom mould is mixed with sodium silicate, quartz sand must fill bed-sit, bed-sit in the case of 700 DEG C before
Material, the light temperature of dry and wet are advisable, and tank bottom mould temperature brushes coating when being down to 100 DEG C, and the debris cleared up in mould simultaneously covers lid；
B, it is fast after tank bottom is first slow during 700 DEG C of cast of preheated mold before cast, ignited, ignited to dip in gear slag by special messenger,
Prevent slag from entering mould, kept off slag by its duration and degree of heating be put into below mould among husky hole ignite, the gas lead body allowed in mould
Outside, pour steel is poured onto lid half and is defined, and covers Insulation, to ensure the thermojunction edge of tank bottom；
C, completely into dark red, mould turnover takes out tank bottom and simultaneously covers loose sand the molten steel in tank bottom mould, ensures normal contraction, has bright
It is aobvious shrink to be qualified, do not shrink for waste product.
Embodiment one：The composition of tank body includes following percentage by weight：
Cr 20%, Ni 6%, Si 0.7%, N 0.1%, RE 0.2%, C 0.23%, Mn 0.8%, Ti 0.8%,
Co 0.5%, W 0.5%, S 0.020%, P≤0.025%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 20.
Embodiment two：The composition of tank body includes following percentage by weight：
Cr 21%, Ni 6.5%, Si 1%, N 0.13%, RE 0.3%, C 0.25%, Mn 1%, Ti 1%, Co
0.67%th, W 0.8%, S 0.030%, P≤0.030%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 30.
Embodiment three：The composition of tank body includes following percentage by weight：
Cr 22%, Ni 6.9%, Si 1.3%, N 0.15%, RE 0.4%, C 0.28%, Mn 1.2%, Ti
1.2%th, Co 0.8%, W 1.0%, S 0.035%, P 0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 40.
It can to sum up obtain, the present invention further increases reductive jar by adding Co, W and Ti composition on the basis of conventional can
Properties of High Temperature Creep so that the service life of reductive jar is increased, and because increased material price is moderate, is reduced
The unit cost of production of reductive jar, and by its specific casting technique, in casting process, the perfect entirety of reductive jar
Property, the density and intensity of reductive jar are strengthened, the service life of reductive jar is further improved and reduces reductive jar
Production cost.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.Although there has been shown and described that
Embodiments of the invention, for the ordinary skill in the art, it is possible to understand that do not depart from the principle of the present invention and
A variety of change, modification, replacement and modification can be carried out to these embodiments, the scope of the present invention is by appended power in the case of spirit
Profit requires and its equivalent limits.
Claims (9)
1. a kind of magnesium metal calcium smelting reductive jar, it is characterised in that composition and reductive jar external application material composition including tank body：
The composition of tank body includes following percentage by weight：
Cr 20%-22%, Ni 6%-6.9%, Si 0.7%-1.3%, N 0.1%-0.15%, RE 0.2%-0.4%, C
0.23%-0.28%, Mn 0.8%-1.2%, Ti 0.8%-1.2%, Co 0.5%-0.8%, W 0.5%-1.0%, S≤
0.035%th, P≤0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：Quartz sand 20-40 mesh.
A kind of 2. magnesium metal calcium smelting reductive jar according to claim 1, it is characterised in that composition including tank body and
Reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 20%, Ni 6%, Si 0.7%, N 0.1%, RE 0.2%, C 0.23%, Mn 0.8%, Ti 0.8%, Co
0.5%th, W 0.5%, S 0.020%, P≤0.025%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 20.
A kind of 3. magnesium metal calcium smelting reductive jar according to claim 1, it is characterised in that composition including tank body and
Reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 21%, Ni 6.5%, Si 1%, N 0.13%, RE 0.3%, C 0.25%, Mn 1%, Ti 1%, Co
0.67%th, W 0.8%, S 0.030%, P≤0.030%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 30.
A kind of 4. magnesium metal calcium smelting reductive jar according to claim 1, it is characterised in that composition including tank body and
Reductive jar external application material composition：
The composition of tank body includes following percentage by weight：
Cr 22%, Ni 6.9%, Si 1.3%, N 0.15%, RE 0.4%, C 0.28%, Mn 1.2%, Ti 1.2%, Co
0.8%th, W 1.0%, S 0.035%, P 0.040%, remaining：Fe is supplied；
The outer compress material of reductive jar includes following component：The mesh of quartz sand 40.
5. a kind of casting technique of magnesium metal calcium smelting reductive jar, it is characterised in that its casting technique comprises the following steps：
S1, melting；
S2, tapping；
S3, centrifuge operations；
S4, tank bottom cast.
A kind of 6. casting technique of magnesium metal calcium smelting reductive jar according to claim 5, it is characterised in that the step
Specific method of smelting in rapid S1 comprises the following steps：
A, check whether electric cabinet circuit element and water route etc. are normal, and whether furnace lining stands intact, and otherwise should fix in time before blow-on,
Allow power transmission after all going well；
B, infusibility and not oxidizable material first add, as 20%-22%Cr, 6%-6.9%Ni, 0.7%-1.3%Si,
0.1%-0.15%N, 0.2%-0.4%RE, 0.23%-0.28%C, 0.8%Mn and residual F e compositions low chromium, Gao Ge, nickel
Plate, chromium nitride, steel scrap, useless reductive jar, ferro-cobalt, ferrotungsten and ferrotianium etc., should accomplish during charging closely knit, prevent arch formation；
C, stainless steel should be selected conscientiously, and not handy no magnetic etc. mixes kind and replaces stainless steel, and the indefinite person of composition does not have to, to closed
Oil-containing, rustless steel container that is aqueous or having other impurity, it is necessary to cutting and elimination, drying rear can be used；
D, be powered fusing after feeding, and furnace temperature is about 1550 DEG C and skimmed, it is necessary to which the slag on surface is scratched clean；
E, alloying is carried out after having taken off slag, the time of alloying first carries out initial refining, in furnace temperature about between 5-10 minutes
Initial refining is carried out at 1500 DEG C, adds 1/3 ferromanganese and silicon of 0.7%-1.3%Si, 0.8%Mn and residual F e compositions, diffusion
Deoxidation, wait ferromanganese and silicon be dissolved after add lime covering molten steel and require that slag bleaches, add Fluorspar Powder dilution slag, have good
Mobility, claw slag and carry out double refining, 1550 DEG C of double refining furnace temperature adds the 1/2 of remaining ferromanganese and silicon, treats lime
Covering Fluorspar Powder dilution claws slag, adds remaining ferromanganese and silicon and carries out final deoxidizing, 1600 DEG C of final deoxidizing temperature, composition adjustment
Addition rare earth ferroalloy is finished, is tapped when waiting 15 minutes and be adjusted to 1620-1640 DEG C of furnace temperature.
A kind of 7. casting technique of magnesium metal calcium smelting reductive jar according to claim 5, it is characterised in that the step
Suddenly the specific tapping method in S2 is：Ladle and tundish are preheated to more than 500 DEG C before tapping, rare earth is placed in ladle,
And oxygen-containing experiment is done in advance, it is as qualified to shrink, and then slag is calmed 5-8 minutes with impulsive motion rare earth, molten steel is gone out in ladle, and
Secondary slagging-off is carried out, secondary slagging-off must remove totally, and clear up outside the ladle that the debris such as slagging and the steel grit at ladle edge are taken off
Insulation is covered, prepares cast.
A kind of 8. casting technique of magnesium metal calcium smelting reductive jar according to claim 5, it is characterised in that the step
Centrifuge operations method in rapid S3 comprises the following steps：
A, the prior end cap temperature for preparing was loaded into type tube in 100 DEG C of end caps for brushing coating in 20 minutes before cast, it is necessary to urgent
Steel pin, sealing is tight, can use, forbid bleed-out.14-16 kilograms of quartz sand sand groove will be housed and be sent into baking in type tube；
B, about 5 minutes startup centrifuges when revolution reaches 400 turns per minute, slowly rotate loose sand groove, by quartz before cast
Sand is uniformly sprinkled into type tube, and checks whether stucco is intact and is pushed into tundish；
C, after molten steel reaches catch time, when reaching pouring temperature, revolution is adjusted to 850-900 revs/min, ladle alignment
Tundish, prepare cast, pouring temperature is controlled at 1480-1520 DEG C, that is, molten steel surface journey kermesinus, there is freezeout soon
Cast；
When d, pouring into a mould, from slow to fast, flow changes from small to big speed, slowly cast, when molten steel is flushed to the other end of type tube, increases
Poring rate, prevents slag from getting into type tube, and duration of pouring control was completed in 50 seconds；
E, after casting complete, ladle is placed on the ground, clears up bag mouth slagging, and the good bag mouth of maintenance, the debris in bag is cleaned out,
In case secondary use；
F, revolution 300 rev/min is reduced after centrifuge turns 5 minutes according to 850-900 revs/min of revolution after casting complete 5 minutes,
Then parking prepares tank；
G, penetrating in type tube and connect front end speed demoulding steel will be soon；
H, steadily tank is pulled out with hoisting machine, must not pay attention to and arbitrarily collide hot tank, to prevent influenceing presentation quality；
I, can body is pulled out, carries out Temperature fall, ensure can body normal contraction.
A kind of 9. casting technique of magnesium metal calcium smelting reductive jar according to claim 5, it is characterised in that the step
Centrifuge operations method in rapid S4 comprises the following steps：
A, tank bottom mould must fill bed-sit before in the case of 700 DEG C, bed-sit sodium silicate, quartz sand batch mixing, do
Wet light temperature is advisable, and tank bottom mould temperature brushes coating when being down to 100 DEG C, and the debris cleared up in mould simultaneously covers lid；
B, it is fast after tank bottom is first slow during 700 DEG C of cast of preheated mold before cast, ignited by special messenger, ignite to dip in gear slag, prevent
Slag enters mould, kept off slag by its duration and degree of heating be put into below mould among husky hole ignite, allow outside the gas lead body in mould, pour
Note molten steel is poured onto lid half and is defined, and covers Insulation, to ensure the thermojunction edge of tank bottom；
C, completely into dark red, mould turnover takes out tank bottom and simultaneously covers loose sand the molten steel in tank bottom mould, ensures normal contraction, there is obvious receipts
Contracting to be qualified, do not shrink for waste product.
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| CN111421121A (en) * | 2020-04-13 | 2020-07-17 | 五台云海镁业有限公司 | Manufacturing method of reduction tank core tube for reducing magnesium, calcium and strontium by Pidgeon process |
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