CN114480870A - Electroslag remelting method for titanium-containing iron-nickel base alloy - Google Patents
Electroslag remelting method for titanium-containing iron-nickel base alloy Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 46
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000010936 titanium Substances 0.000 title abstract description 29
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title abstract description 28
- 229910052719 titanium Inorganic materials 0.000 title abstract description 27
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 title abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 93
- 238000002844 melting Methods 0.000 claims abstract description 22
- 230000008018 melting Effects 0.000 claims abstract description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 21
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 21
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012840 feeding operation Methods 0.000 claims description 2
- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 claims 3
- LMBUSUIQBONXAS-UHFFFAOYSA-N [Ti].[Fe].[Ni] Chemical compound [Ti].[Fe].[Ni] LMBUSUIQBONXAS-UHFFFAOYSA-N 0.000 claims 1
- 238000005272 metallurgy Methods 0.000 abstract description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 19
- 239000000395 magnesium oxide Substances 0.000 description 19
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910009815 Ti3O5 Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- 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
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- 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
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an electroslag remelting method for a titaniferous iron-nickel base alloy, and relates to the technical field of metallurgy. An electroslag remelting method for titanium-containing iron-nickel base alloy adopts a slag system consisting of the following components in percentage by weight: 13 to 17 percent of CaO, 4 to 7 percent of MgO, 4 to 7 percent of TiO, and 19 to 23 percent of Al2O3The balance being CaF2. The slag system is added with proper melting temperature, viscosity and resistivity by adjusting the proportion of CaO, Al2O3, MgO and Ca 2F.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to an electroslag remelting method of a titanium-containing iron-nickel base alloy.
Background
The NS1402 alloy is a titanium-containing fe-ni based corrosion resistant alloy. The nickel content in the alloy is increased to 33-38%, and the stabilizing element titanium is added, so that the stress corrosion cracking resistance of the steel can be improved, and the corrosion resistance and the processability of the steel in reducing acid are greatly improved. The alloy has good corrosion resistance, and is widely applied to industries such as chemical processing and the like.
The NS1402 alloy is smelted by Vacuum Induction Melting (VIM) and electroslag remelting (ESR). The electroslag remelting ingot has the characteristics of uniform components, high purity, compact structure and the like, so the electroslag remelting is an important smelting means of high-temperature alloy. The electroslag remelting equipment is simple, the operation is convenient, the surface of the cast ingot is smooth and clean, the thermoplasticity is good, and the yield is high. The electroslag remelting desulphurization effect and the non-metallic inclusion removal effect are good.
The slag system used by the electroslag remelting requires appropriate physical parameters, wherein the melting temperature, viscosity and resistivity of the slag system are the main factors for judging whether the slag system is suitable for alloy smelting, and the slag system has appropriate melting temperature, viscosity and resistivity by adjusting the proportion of CaO, Al2O3, MgO and Ca 2F. In the electroslag remelting process, easily-oxidized elements are preferentially combined with oxygen, so that main elements are prevented from being oxidized. A part of aluminum and titanium in the alloy has the function of deoxidation, and can prevent the oxidation of main elements. The principle is as follows: when the alloy is melted, the alloy becomes liquid and enters a slag pool. At this time, aluminum and titanium preferentially combine with oxygen, and oxidation of the main alloying elements is prevented. The quality of the alloy is ensured. Therefore, metal elements such as aluminum and titanium which are liable to be bonded by oxygen are reduced during the melting. However, the titanium element plays a role of a component element besides a role of deoxidation, and the reasonable titanium content can improve the intergranular corrosion resistance of the alloy. Therefore, to ensure that the titanium component is in a reasonable range, the proportion of the components of the slag system must be controlled, so that the temperature of the slag system is reasonable, the product has good formability and good appearance quality, and the content of titanium in the alloy can be controlled between 0.6 and 1.2 percent, so that the alloy has good intergranular corrosion resistance.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electroslag remelting method for a titaniferous iron-nickel-based alloy, which solves at least one technical problem in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: an electroslag remelting method for titanium-containing iron-nickel base alloy is characterized in that a slag system consisting of the following components in percentage by weight is adopted: 13 to 17 percent of CaO, 4 to 7 percent of MgO, 4 to 7 percent of TiO, and 19 to 23 percent of Al2O3The balance being CaF2。
Preferably, the following slag system is adopted by weight percentage: 15% of CaO, 5% of MgO, 5% of TiO, 20% of Al2O3 and 55% of CaF 2.
Preferably, the melting point temperature of the slag system is 1300-1320 ℃.
Preferably, the slag system has a resistivity of 0.25 to 0.35 Ω · cm at 1600 ℃ to 1600 ℃.
Preferably, the density of the slag system at 1600 ℃ and 1600 ℃ is 2.5g/cm3。
Preferably, in the electroslag remelting smelting process, the slag system is melted at 1600-1660 ℃, the slag melting time is 30-40 minutes, liquid slag is poured into the crystallizer after the slag melting, the slag system enters the smelting stage after the slag melting is finished, and the dried slag system is continuously added in the smelting process until the smelting is finished to perform feeding operation.
Preferably, the amount of the slag system used is (inner diameter of the mold 2 × (80 to 200mm)) × (0.25 × 2.5g/cm3/1000000 in kg.
(III) advantageous effects
The invention provides an electroslag remelting method for titaniferous iron-nickel base alloy, which has the following beneficial effects compared with the prior art:
1. the slag system is added with proper melting temperature, viscosity and resistivity by adjusting the proportion of CaO, Al2O3, MgO and Ca 2F.
2. The NS1402 iron-nickel base alloy with good appearance quality and uniform element component distribution is prepared by the slag system provided by the invention, the easily burnt and damaged element titanium is controlled in a qualified range, and the problem of titanium easily oxidized element burning and damage in the electroslag remelting and smelting process of the Ti-containing NS1402 alloy is well solved.
Product picture of this slag system
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 shows the components of the alloy after smelting in the embodiment of the present invention;
fig. 2 is an appearance effect diagram of electroslag.
Detailed description of the invention
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments:
the technical scheme adopted by the invention is as follows: an electroslag remelting method for titanium-containing iron-nickel base alloy is characterized in that a slag system consisting of the following components in percentage by weight is adopted: 13 to 17 percent of CaO, 4 to 7 percent of MgO, 4 to 7 percent of TiO, and 19 to 23 percent of Al2O3The balance being CaF2。
CaF in the above examples2Can reduce the melting point, viscosity and surface tension of the slag. However, CaF is comparable to other components2Of higher conductivity, pure CaF2The conductivity reaches 4.54 omega-1. cm-1 at 1650 ℃; CaF in slag2High content, easy to release harmful gas and smoke dust during smelting and cause environmental pollution. The slag alkalinity is increased by adding CaO into the slag, the desulfurization efficiency is improved, and the highest desulfurization rate can reach 85% under the condition that the addition amount of CaO is 40%; and the addition of CaO can reduce the electrical conductivity of the slag. But CaO has strong water absorption and is easy to carry hydrogen and oxygen, so that the steel is increased in hydrogen and oxygen; al (Al)2O3Can obviously reduce the conductivity of the slag, reduce the power consumption and improve the productivity. But Al in the slag2O3The number of the grooves is increased, and the,will raise the melting temperature and viscosity of the slag and will reduce the desulphurisation of the slag and in addition will make the remelting process difficult to establish and stabilize. General Al2O3The content of (A) is not more than 50%; the slag contains proper MgO, so that a semi-solidified film is formed on the surface of the slag pool, oxygen absorption of the slag pool can be prevented, the valence oxides in the slag are prevented from being transferred to a metal molten pool for oxygen supply, the contents of oxygen, hydrogen and nitrogen in the ingot are reduced, and the heat loss of the surface of the slag to the atmosphere radiation can be reduced by the solidified film. But MgO is easy to increase the viscosity of the slag, so that the MgO contained in the slag is generally not more than 15%; when remelting Ti-containing steels and alloys, the slag is loaded with a certain amount of TiO2The burning loss of titanium in steel can be inhibited;
for high titanium low aluminum type high temperature alloy, the burning loss amount of titanium is increased because the mass fraction of aluminum in the alloy is reduced. Aiming at the problem, CaF is adopted2、Al2O3、MgO、TiO2The quaternary slag system is subjected to electroslag remelting. Because of the existence of a reversible reaction formula between the slag gold:
thus adding TiO to the slag system2The burning loss of titanium in the alloy can be reduced. But due to TiO2Is a variable valence oxide, and can transfer oxygen supply when improperly controlled, and the addition of MgO in the slag system can increase Al content in the slag2O3And Ti3O5Activity coefficient of (2), reduction of TiO2Activity coefficient, inhibition of TiO2Delivering oxygen supply.
The electroslag remelting method for the titanium-containing iron-nickel-based alloy aims at smelting the titanium-containing iron-nickel-based alloy, wherein the titanium-containing iron-nickel-based alloy is NS1402, and for further explaining the embodiment of the invention, the nickel-based alloy related to the embodiment of the invention is NS1402, wherein the composition table is as follows:
| element(s) | C | Si | Mn | P | S | Ni | Cr |
| NS1402 | ＜0.05 | ≤0.5 | ≤1.0 | ≤0.03 | ≤0.03 | 38-46 | 19.5-23.5 |
| Element(s) | Mo | Cu | Fe | Al | Ti | Mg | Nb+Ta |
| NS1402 | 2.5-3.5 | 1.5-3.0 | Balance of | ≤0.2 | 0.6-1.2 |
Electroslag remelting is a smelting process. The nickel-based alloy is smelted into an electrode bar through vacuum smelting or an intermediate frequency furnace, the electrode bar is used as a raw material for electroslag remelting to carry out electroslag remelting, and the electrode bar is remelted and solidified to form an electroslag ingot. When the diameter of the crystallizer is 420mm, the diameter of the electrode rod is about 290 mm.
Wherein: in the electroslag remelting process, the used slag system consists of the following materials which are respectively CaF2(Fluorite) and Al2O3(aluminum oxide), CaO (lime), MgO (magnesium oxide), TiO and the like. The proportion of slag systems used by different alloy materials is different. The different proportions can affect the melting point, resistivity, density, viscosity and other properties of the slag system. Therefore, the proportion of the slag system is particularly critical. The improper slag system may cause smelting defects such as slag grooves and the like, and influence the quality and yield of the electroslag ingot.
Specifically, the following slag system is adopted by weight percentage: 13-17% of CaO, 4-7% of MgO, 4-7% of TiO, 19-23% of Al2O3, and the balance of CaF 2.
In one embodiment, the following slag system is adopted by weight percentage: 15% of CaO, 5% of MgO, 5% of TiO, 20% of Al2O3 and 55% of CaF 2.
In order to solve the problem of burning loss of easily-oxidizable elements in the electroslag remelting and smelting process of the Cu-containing NS1403 alloy, a large number of researches show that the smelting point of the slag system can be adjusted and deoxidation can be realized in the smelting process.
For the NS1403 nickel-based alloy containing copper and Cu by electroslag remelting smelting, oxidation reaction can occur in the smelting process, and thermodynamic calculation shows that the oxidation can be inhibited by adding a proper amount of Al in the smelting process. In the invention, 5-10g of aluminum powder is properly added into each kilogram of molten steel in the smelting process.
In the electroslag remelting process, the content of Al2O3 in a slag system is controlled to be 19-23%, Al2O3 can ensure that the temperature and viscosity of slag bath smelting are certain, and the temperature is not too high. When the content of Al2O3 in the slag system reaches 30%, the resistivity rises to 0.57 omega cm, so that the melting temperature and viscosity of the slag rise, and the desulfurization effect of the slag is reduced.
CaO can increase the alkalinity of the slag and improve the desulfurization effect of the slag, but the proportion of CaO is controlled to be 13-17% because the CaO has strong water absorption.
MgO can form a layer of semi-solidified film on the surface of the slag, and can prevent oxygen from being absorbed by a slag pool and oxygen from being supplied to molten steel by the valence oxide in the slag. Meanwhile, the heat loss of the slag pool can be reduced, and the energy consumption is reduced. Therefore, the content of MgO in the slag system is controlled to be 4-7%.
In one embodiment, the melting point temperature of the slag system is 1300 ℃ to 1320 ℃.
In one embodiment, the slag system has a resistivity of 0.25-0.35 Ω · cm at 1600-1600 ℃.
In one embodiment, the slag system has a density of 2.5g/cm at 1600-3。
In one embodiment, in the electroslag remelting smelting process, slag melting is performed at 1600-.
In one embodiment, the amount of the slag system is equal to (inner diameter of the crystallizer)2X (80 to 200 mm)). times.0.25X 2.5g/cm3/1000000 in kg.
For the purpose of better explaining the present invention and for the purpose of facilitating understanding, the present invention will be described in detail below by way of specific embodiments.
In this example, the diameter of the crystallizer was 420mm, and the chemical components of the slag system used were in the following mass percentages, and in the smelting process using the above slag system, the smelting was performed according to the smelting method of the present invention, and in the smelting process, aluminum powder was added in the slag bath in an amount of 5g per kg of alloy.
Wherein,
example 1 is: CaF2：Al2O3：CaO：MgO：TiO＝55:20:15:5:5；
Example 2 is: CaF2：Al2O3＝70:30；
Example 3 is: CaF2：Al2O3：CaO：MgO＝65:25:5:5；
Example 4 is: CaF2：Al2O3：CaO：MgO＝60:20:10:10。
In the above examples, the compositions after smelting are shown in FIG. 1.
Wherein the raw material is the component of the initial electrode bar, and the examples 1 to 4 are respectively the components after smelting by adopting corresponding slag systems, wherein the burning loss of titanium elements of the slag system without titanium is generally more serious than that of the slag system containing titanium, and even some of the titanium elements exceed the lower limit, so that the alloy components are unqualified.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. Electroslag containing titanium-iron-nickel base alloyThe remelting method is characterized in that a slag system consisting of the following components in percentage by weight is adopted: 13 to 17 percent of CaO, 4 to 7 percent of MgO, 4 to 7 percent of TiO, and 19 to 23 percent of Al2O3The balance being CaF2。
2. The process for electroslag remelting of a titanium-iron-containing nickel-based alloy according to claim 1, wherein: the slag system comprises the following components in percentage by weight: 15% of CaO, 5% of MgO, 5% of TiO, 20% of Al2O3 and 55% of CaF 2.
3. A process for electroslag remelting of a titaniferous-nickel base alloy according to any one of claims 1-2, characterized in that: the melting point temperature of the slag system is 1300-1320 ℃.
4. A process for electroslag remelting of a titaniferous-nickel base alloy according to any one of claims 1-2, characterized in that: the resistivity of the slag system at 1600-1600 ℃ is 0.25-0.35 omega cm.
5. A process for electroslag remelting of a titanium-iron-containing nickel-base alloy according to any one of claims 1-2, characterized in that: the density of the slag system at 1600 ℃ and 1600 ℃ is 2.5g/cm3。
6. A process for electroslag remelting of a titaniferous-nickel base alloy according to any one of claims 1-2, characterized in that: in the electroslag remelting smelting process, slag melting is carried out at 1600-1660 ℃, the slag melting time is 30-40 minutes, liquid slag is poured into a crystallizer after slag melting, the slag melting enters a smelting stage after the slag melting is finished, and the dried slag system is continuously added in the smelting process until the smelting is finished to carry out feeding operation.
7. The electroslag remelting process for a titanium-iron-containing nickel-based alloy according to claim 6, wherein: the amount of the slag system is equal to the inner diameter of the crystallizer2X (80-200)). times.0.25X 3.14X 2.5/1000000 in kg.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719683A (en) * | 2012-06-29 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for melting nickel-base high temperature alloy with electro-slag furnace |
| CN105734302A (en) * | 2016-04-29 | 2016-07-06 | 重庆钢铁(集团)有限责任公司 | GH4169 alloy steel electroslag remelting refining slag and method for performing electroslag re-melting on GH4169 alloy steel |
| CN105950882A (en) * | 2016-06-16 | 2016-09-21 | 重庆钢铁(集团)有限责任公司 | Remelting refining slag and method for applying remelting refining slag to electroslag remelting of high-Al and high-Ti alloy steel |
| CN110819817A (en) * | 2019-11-21 | 2020-02-21 | 太原钢铁(集团)有限公司 | Basic slag system for aluminum-titanium-containing nickel-based high-temperature alloy and electroslag remelting method |
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2021
- 2021-12-03 CN CN202111468482.XA patent/CN114480870A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719683A (en) * | 2012-06-29 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for melting nickel-base high temperature alloy with electro-slag furnace |
| CN105734302A (en) * | 2016-04-29 | 2016-07-06 | 重庆钢铁(集团)有限责任公司 | GH4169 alloy steel electroslag remelting refining slag and method for performing electroslag re-melting on GH4169 alloy steel |
| CN105950882A (en) * | 2016-06-16 | 2016-09-21 | 重庆钢铁(集团)有限责任公司 | Remelting refining slag and method for applying remelting refining slag to electroslag remelting of high-Al and high-Ti alloy steel |
| CN110819817A (en) * | 2019-11-21 | 2020-02-21 | 太原钢铁(集团)有限公司 | Basic slag system for aluminum-titanium-containing nickel-based high-temperature alloy and electroslag remelting method |
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