CN106987759A - A kind of corrosion-resistant screw-thread steel smelting process containing rare earth element - Google Patents
A kind of corrosion-resistant screw-thread steel smelting process containing rare earth element Download PDFInfo
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- CN106987759A CN106987759A CN201710196196.XA CN201710196196A CN106987759A CN 106987759 A CN106987759 A CN 106987759A CN 201710196196 A CN201710196196 A CN 201710196196A CN 106987759 A CN106987759 A CN 106987759A
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 102
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- 230000007797 corrosion Effects 0.000 title claims abstract description 19
- 238000003723 Smelting Methods 0.000 title claims abstract description 16
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 238000005275 alloying Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 238000010891 electric arc Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000000320 mechanical mixture Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 8
- -1 rare earth compound Chemical class 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000006104 solid solution Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000035484 reaction time Effects 0.000 abstract description 3
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009865 steel metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-IGMARMGPSA-N vanadium-51 Chemical compound [51V] LEONUFNNVUYDNQ-IGMARMGPSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C21C7/0006—Adding metallic additives
-
- 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
- C21C7/06—Deoxidising, e.g. killing
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of anti-corrosion spiral smelting process containing rare earth element that the present invention is provided, rare earth pulvis is mixed with iron powder, briquetting and sintering form rare earth block materials, rare earth pulvis is firmly wrapped in iron powder, it is added into before molten steel casting in molten steel, the dissolving that rare earth pulvis is completed during tundish flows into crystallizer again is flowed into by ladle in molten steel, homogenization, reduce the reaction time of rare earth pulvis and molten steel, reduce the total amount of rare earth compound, the rare earth pulvis for not being in time for reaction dissolve simultaneously after is directly solid-solubilized in steel matrix, add the recovery rate of solid solution state rare earth element, improve the corrosion resistance of steel matrix.
Description
Technical field
The present invention relates to field of steel metallurgy, more particularly to a kind of corrosion-resistant screw-thread steel smelting process containing rare earth element.
Background technology
Screw-thread steel is important construction material, is widely used in the civil engineering construction such as house, bridge, road, is modern
One of core material of building.At present, steel bar corrosion is to influence one of principal element of reinforced concrete structure durability, is also
Important Project premature failure and the major reason for exiting military service in advance, especially in the specific environments such as ocean and dynamic load and many of static load
Under the coupling of factor, steel bar corrosion will be caused to aggravate, therefore, since 1950s, foreign countries proceed by
The research of corrosion-resistant screw-thread steel, its core concept is by adding Cr, Ni, Cu, P, Mo, Sn, Ti, Nb, W, V, Re etc. in steel
Alloying element, makes steel produce fine and close interior rusty scale, reduces corrosion rate, so that the corrosion resistance of reinforcing bar in itself is improved, it is open
Number describe grinding for this respect for CN104018091A patent of invention and Publication No. CN104372246A patent of invention
Study carefully work.
For alloying element most in anti-corrosion spiral, can directly it add in the case of the abundant deoxidation of molten steel
Enter, recovery rate is higher, but for rare earth element therein, this process is then much more complex.The influence corrosion proof rare earth element of steel exists
Exist in steel with solid solution state, it can improve the polarization resistance and corrosion potential of steel matrix, therefore, it is possible to improve steel matrix
Corrosion resistance, but not all entrance molten steel rare earth element with solid solution state exist.Due to general screw thread steel smelting using Si,
Mn deoxidization techniques, and the affinity of rare earth element and oxygen is significantly larger than Si, Mn, therefore rare earth element is further into meeting after molten steel
Reacted with the oxygen in molten steel；Meanwhile, the sulfur content in general screw-thread steel is 0.01% or so at present, and is balanced each other with rare earth element
Molten steel sulfur content below 0.0050%, therefore rare earth element enter molten steel after can also further with the reaction of Salmon-Saxl in molten steel；
In addition, rare earth element can also carry out denaturation treatment to the field trash in molten steel.Integrate and see, rare earth element enters first after molten steel
It can first be chemically reacted with the oxygen in molten steel, sulphur, field trash, generation rare earth oxide, rare-earth sulfide and rare earth oxygen sulphur
Compound, remaining rare earth element just exists with solution.
The fusing point and density of the rare earth compound of table 1
These rare earth compound fusing points are higher, and density is approached with molten steel, it is difficult to be excluded from molten steel, on the one hand can influence steel
The cleanliness factor of water, can cause continuous casting sprue to store stream, while can also reduce rare earth element recovery rate, finally influence screw-thread steel when serious
Mechanical property and corrosion resisting property.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of corrosion-resistant screw thread steel smelting containing rare earth element
In the reaction time of method, reduction rare earth pulvis and molten steel, the total amount of rare earth compound is reduced, can make not being in time for reaction after dissolving
Rare earth pulvis be directly solid-solubilized in steel matrix, add the recovery rate of solid solution state rare earth element, improve the corrosion-resistant of steel matrix
Ability.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of corrosion-resistant screw-thread steel smelting process containing rare earth element, specific method is as follows：
1) preparation of rare earth block materials：Rare earth pulvis and iron powder are subjected to mechanical mixture, mixing using rotary drum mixer
Weight/mass percentage composition shared by rare earth pulvis is 5%-20% afterwards, and the pulvis surface after mixing is without obvious rare earth powder particles；
By after mixing pulvis carry out briquetting and sintering processes formation rare earth block materials, it is sintered after, rare earth pulvis is firmly wrapped
It is rolled in inside iron powder, and rare earth block materials have certain intensity and proportion；
2) electric arc furnaces melting waste steel is utilized, when steel scrap is completely melt to add ferrosilicon and manganeisen in backward molten steel to molten steel
Carry out deoxidation treatment, it is ensured that molten steel dissolved oxygen content is less than 0.0040%, and deoxygenated alloy is added as requested after adding 5-10min
Various alloying elements in addition to rare earth element, make alloying element fully, uniform dissolution is into molten steel；
3) rare earth block materials are added in sky ladle and tapped into ladle, it is ensured that the tapping process molten steel band quantity of slag is small
In 5kg/t steel, casting is hereafter proceeded by, casting cycle uses protective casting, and molten steel is flowed into crystallizer through tundish, is formed
Meet desired square billet；
Described rare earth pulvis and the granularity of iron powder cannot be greater than 0.5mm.
The briquetting processing of described rare earth block materials uses the mixing powder after universal press, briquetting to have rule outer
Shape.
The sintering processes of described rare earth block materials are carried out under hydrogen shield hot conditions, and 1100 DEG C of sintering temperature-
1300 DEG C, sintering time 20-30min.
Above-mentioned steps 2) in into molten steel add deoxidier when liquid steel temperature be not less than 1600 DEG C.
Above-mentioned steps 2) in tapping terminate to casting start time interval be not more than 10min.
Compared with prior art, the beneficial effects of the invention are as follows：
In traditional anti-corrosion spiral smelting process containing rare earth element, typically rare earth element is completed in ladle refining process
And the alloying process of other alloying elements, it certainly will so cause rare earth element further anti-with the element such as the oxygen in molten steel, sulphur
Should, dystectic rare earth compound is formed, the cleanliness factor of molten steel is not only influenceed, solid solution state rare earth content can be also reduced, so as to reduce
The mechanical property and decay resistance of spiral.A kind of anti-corrosion spiral smelting side containing rare earth element that the present invention is provided
Method, rare earth pulvis is mixed with iron powder, briquetting and sintering form rare earth block materials, rare earth pulvis is firmly wrapped in iron powder
In, it is added into molten steel, is flowed into molten steel by ladle complete during tundish flows into crystallizer again before molten steel casting
Dissolving, homogenization into rare earth pulvis, reduce the reaction time of rare earth pulvis and molten steel, reduce the total of rare earth compound
Amount, while the rare earth pulvis for not being in time for reaction after dissolving is directly solid-solubilized in steel matrix, adds solid solution state rare earth element
Recovery rate, improves the corrosion resistance of steel matrix.
Brief description of the drawings
Fig. 1 is that common process is mingled with form comparison diagram with rare earth of the present invention.
In figure：(a) it is common process, (b) is the present invention.
Embodiment
Embodiments of the present invention are further illustrated below in conjunction with the accompanying drawings：
A kind of corrosion-resistant screw-thread steel smelting process containing rare earth element, specific method is as follows：
1) preparation of rare earth block materials：Rare earth pulvis and iron powder are subjected to mechanical mixture, mixing using rotary drum mixer
Weight/mass percentage composition shared by rare earth pulvis is 5%-20% afterwards, and the pulvis surface after mixing is without obvious rare earth powder particles；
By after mixing pulvis carry out briquetting and sintering processes formation rare earth block materials, it is sintered after, rare earth pulvis is firmly wrapped
It is rolled in inside iron powder, and rare earth block materials have certain intensity and proportion；
2) electric arc furnaces melting waste steel is utilized, when steel scrap is completely melt to add ferrosilicon and manganeisen in backward molten steel to molten steel
Carry out deoxidation treatment, it is ensured that molten steel dissolved oxygen content is less than 0.0040%, and deoxygenated alloy is added as requested after adding 5-10min
Various alloying elements in addition to rare earth element, make alloying element fully, uniform dissolution is into molten steel；
3) rare earth block materials are added in sky ladle and tapped into ladle, it is ensured that the tapping process molten steel band quantity of slag is small
In 5kg/t steel, casting is hereafter proceeded by, casting cycle uses protective casting, and molten steel is flowed into crystallizer through tundish, is formed
Meet desired square billet；
Described rare earth pulvis and the granularity of iron powder cannot be greater than 0.5mm.
The briquetting processing of described rare earth block materials uses the mixing powder after universal press, briquetting to have rule outer
Shape.
The sintering processes of described rare earth block materials are carried out under hydrogen shield hot conditions, and 1100 DEG C of sintering temperature-
1300 DEG C, sintering time 20-30min.
Above-mentioned steps 2) in into molten steel add deoxidier when liquid steel temperature be not less than 1600 DEG C.
Above-mentioned steps 2) in tapping terminate to casting start time interval be not more than 10min.
Embodiment 1：
The chemical composition of spiral such as table 2：
The screw thread composition of steel of table 2, %
| C | Si | Mn | P | S | Cr | Mo | V | Re |
| 0.03 | 0.5 | 2.3 | <0.01 | <0.01 | 8.5 | 2.2 | 0.04 | 0.02 |
Specific steps：
1) preparation of rare earth block material：Granularity is less than to 0.5mm rare earth powder and atomized iron powder using rotary drum mixer
Mixed, full dose content of rare earth is 98% in rare earth pulvis, wherein Ce contents are 97.32%, La contents 0.28%, and remaining is
Impurity.Iron content is 99% in iron powder, and remaining is impurity.The weight/mass percentage composition of rare earth pulvis is 15% after mixing.Utilize ten thousand
Energy forcing press carries out briquetting to mixing powder, is then sintered in hydrogen shield high temperature sintering furnace, sintering temperature
1200 DEG C, sintering time 25min.Form rare earth block materials.
2) melt carbon content in 7t steel scraps, steel scrap using electric arc furnaces and be less than 0.0050%, phosphorus content less than 0.0080%, sulphur
Content is less than 0.0060%.Steel scrap is warming up to 1610 DEG C after being completely melt, be subsequently to added into 220kg low-carbon ferromanganeses (manganese content 80%,
Carbon content 0.2%, remaining is impurity) and 50kg ferrosilicon (silicone content 76%, remaining is impurity) deoxidation is carried out to molten steel, after deoxidation
Molten steel dissolved oxygen content is 0.0021%, and deoxygenated alloy adds addition 963kg low-carbon ferrochromiums after 7min, and (chromium content 65%, carbon contain
Amount 0.2%, remaining is impurity), 255kg molybdenum-irons (molybdenum content 62%, remaining be impurity), 5.7kg vanadium iron (content of vanadium 51%, its
Remaining is impurity).
3) 11.2kg rare earth block materials are added in empty ladle, are gone out when the liquid steel temperature in electric arc furnaces is 1590 DEG C
Steel, tapping process molten steel band quantity of slag 30kg, tapping terminates to proceed by molten steel casting after 5min, and symbol is cast into through billet caster
Close desired strand.
This technique is compared with common process (rare earth alloy is directly added into electric arc furnaces), and Cleanliness of Molten Steel is significantly improved,
Strand middle rare earth is mingled with using ESEM and analyzed, large particle rare-earth, which is mingled with, in this technique significantly reduces, it is specific such as Fig. 1
It is shown.This technique rare earth element recovery rate is also highly improved and (is shown in Table 3) simultaneously, and solid solution state rare earth content is higher.
The common process of table 3 is contrasted with rare earth element recovery rate of the present invention
Claims (6)
1. a kind of corrosion-resistant screw-thread steel smelting process containing rare earth element, it is characterised in that specific method is as follows：
1) preparation of rare earth block materials：Rare earth pulvis and iron powder are subjected to mechanical mixture using rotary drum mixer, it is dilute after mixing
Weight/mass percentage composition shared by native pulvis is 5%-20%, and the pulvis surface after mixing is without obvious rare earth powder particles；Will be mixed
Pulvis after even carries out briquetting and sintering processes formation rare earth block materials, it is sintered after, rare earth pulvis is firmly wrapped in
Inside iron powder, and rare earth block materials have certain intensity and proportion；
2) electric arc furnaces melting waste steel is utilized, when steel scrap is completely melt that ferrosilicon and manganeisen are added in backward molten steel to be carried out to molten steel
Deoxidation treatment, it is ensured that molten steel dissolved oxygen content is less than 0.0040%, and deoxygenated alloy is added after 5-10min and added as requested except dilute
Various alloying elements beyond earth elements, make alloying element fully, uniform dissolution is into molten steel；
3) rare earth block materials are added in sky ladle and tapped into ladle, it is ensured that the tapping process molten steel band quantity of slag is less than
5kg/t steel, hereafter proceeds by casting, and casting cycle uses protective casting, and molten steel is flowed into crystallizer through tundish, forms full
The square billet that foot is required.
2. a kind of anti-corrosion spiral smelting process containing rare earth element according to claim 1, it is characterised in that：It is described
Rare earth pulvis and the granularity of iron powder cannot be greater than 0.5mm.
3. a kind of anti-corrosion spiral smelting process containing rare earth element according to claim 1, it is characterised in that：It is described
Rare earth block materials briquetting processing use the mixing powder after universal press, briquetting that there is irregular figure.
4. a kind of anti-corrosion spiral smelting process containing rare earth element according to claim 1, it is characterised in that：It is described
The sintering processes of rare earth block materials carried out under hydrogen shield hot conditions, 1100 DEG C -1300 DEG C of sintering temperature, during sintering
Between 20-30min.
5. a kind of anti-corrosion spiral smelting process containing rare earth element according to claim 1, it is characterised in that：It is above-mentioned
Step 2) in into molten steel add deoxidier when liquid steel temperature be not less than 1600 DEG C.
6. a kind of anti-corrosion spiral smelting process containing rare earth element according to claim 1, it is characterised in that：It is above-mentioned
Step 2) in tapping terminate to casting start time interval be not more than 10min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129536A (en) * | 2019-04-03 | 2019-08-16 | 如皋市福锴金属制品有限公司 | A kind of screw-thread steel and its thermal diffusion Treatment technique for processing |
| CN114297889A (en) * | 2021-12-16 | 2022-04-08 | 武汉科技大学 | Novel steel ladle multi-field coupling analysis method |
| CN114908207A (en) * | 2022-04-18 | 2022-08-16 | 包头钢铁（集团）有限责任公司 | Method for improving rare earth yield by controlling sulfur content of molten steel |
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| CN103820739A (en) * | 2014-02-28 | 2014-05-28 | 南车戚墅堰机车车辆工艺研究所有限公司 | Ferrite heat-resisting cast steel, preparation method thereof and applications thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129536A (en) * | 2019-04-03 | 2019-08-16 | 如皋市福锴金属制品有限公司 | A kind of screw-thread steel and its thermal diffusion Treatment technique for processing |
| CN114297889A (en) * | 2021-12-16 | 2022-04-08 | 武汉科技大学 | Novel steel ladle multi-field coupling analysis method |
| CN114297889B (en) * | 2021-12-16 | 2024-05-24 | 武汉科技大学 | Multi-field coupling analysis method for novel steel ladle |
| CN114908207A (en) * | 2022-04-18 | 2022-08-16 | 包头钢铁（集团）有限责任公司 | Method for improving rare earth yield by controlling sulfur content of molten steel |
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Effective date of registration: 20240513 Address after: 114200 Houfang Neighborhood Committee, Teng'ao Hot Spring Management Zone, Haicheng City, Anshan City, Liaoning Province Patentee after: Anshan Xintie Special Steel Manufacturing Co.,Ltd. Country or region after: China Address before: 114200 Teng'ao Hot Spring Management Zone, Haicheng City, Anshan City, Liaoning Province Patentee before: HAICHENG XINRUI CASTING Co.,Ltd. Country or region before: China |