CN106521174B - A kind of electro-slag re-melting method of soft magnetism permalloy - Google Patents
A kind of electro-slag re-melting method of soft magnetism permalloy Download PDFInfo
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- CN106521174B CN106521174B CN201611011038.4A CN201611011038A CN106521174B CN 106521174 B CN106521174 B CN 106521174B CN 201611011038 A CN201611011038 A CN 201611011038A CN 106521174 B CN106521174 B CN 106521174B
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- 239000002893 slag Substances 0.000 title claims abstract description 53
- 238000002844 melting Methods 0.000 title claims abstract description 37
- 229910000889 permalloy Inorganic materials 0.000 title claims abstract description 36
- 230000005389 magnetism Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 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 10
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 10
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 10
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 9
- 235000012041 food component Nutrition 0.000 claims abstract description 8
- 239000005417 food ingredient Substances 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 238000005242 forging Methods 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract description 7
- 239000000470 constituent Substances 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 238000005204 segregation Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 18
- 229910045601 alloy Inorganic materials 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 239000011572 manganese Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 A12O3 Chemical compound 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- 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
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of electro-slag re-melting methods of soft magnetism permalloy, include the following steps：From the preparation of molten electrode bar：The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：49 51 parts, Mn：0.3 0.6 parts, Si：0.15 0.3 parts, Fe：Surplus.Through vacuum induction melting, it is cast into pole, the as certainly molten electrode bar of electroslag remelting；Electroslag remelting：The slag charge of electroslag remelting matches：CaF2：55 65 parts；Al2O3：10 16 parts；CaO：10 14 parts；MgO：12 15 parts.The present invention can reduce segregation, thinning microstructure for soft magnetism permalloy, reduce C, P, and S constituent contents reduce inclusion content and improve its distribution, to improve the performance of processability and material.
Description
Technical field
The present invention relates to magnetically soft alloy metallurgical technology field, more particularly to a kind of electroslag remelting side of soft magnetism permalloy
Method.
Background technology
Fe-Ni magnetically soft alloys are that have high magnetic conductivity and low coercitive a kind of alloy in low-intensity magnetic field.In weak magnetic
High magnetic conductivity and low coercivity are just shown under the magnetization of field, and there is good cold-forming property.By changing to ingredient
Become content, adds one or more of alloying elements（Such as Mo, Cu, Cr and Ti etc.）With the regulation and control of technique, can obtain various
The permalloy with different characteristics, kind it is various, be soft magnetic materials in most.This kind of alloy is widely used in wirelessly
In electric electronics industry, precision instrumentation, remote control and automatic control system, integrates and be mainly used at energy conversion and information
Two broad aspects are managed, are a kind of important materials in national economy.
Electroslag remelting is a kind of important metallurgical technology technology for purifying metals and obtaining clean, uniform, fine and close ingot structure,
However how by optimizing electroslag remelting slag formula and coordinating suitable electroslag process, alloy structure purity is improved, reduction has
Evil constituent content reduces non-metallic inclusion, ensures that surface of steel ingot is smooth, the clean even compact of tissue and chemical composition are uniform,
It is to improve alloy finished product rate key problem to be solved.
By Fe-Ni magnetically soft alloy electroslag remeltings experiment for many years, a kind of electroslag process is explored, this work is passed through
Skill can effectively improve the purity and tissue of material, improve finished product rate and alloy property.
Invention content
The present invention provides a kind of electro-slag re-melting methods of soft magnetism permalloy, and having for alloy can be reduced using this method
Evil element, improves the Impurity Distribution situation of alloy, is conducive to thinning microstructure, greatly reduces C, S, the P content in metal material, from
And improve the degree of purity and lumber recovery of high performance corrosion resistant alloy.
Realize the technical scheme is that：A kind of electro-slag re-melting method of soft magnetism permalloy, includes the following steps：
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：0.3-0.6 parts of 49-51 parts of Ni, Mn, Si
0.15-0.3 parts, surplus Fe；Through vacuum induction melting, it is cast into pole, after finishing is sanded in pole surface, as electroslag weight
Molten certainly molten electrode bar；
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF255-65 parts, Al2O310-16 parts, 10-14 parts of CaO,
12-15 parts of MgO is used for soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to molten condition, is poured into crystallizer, ties
Brilliant device and bottom plate are water-cooled, by step（1）In the slag charge of the electroslag remelting for dropping to melting from molten electrode bar of middle preparation,
After the energization starting the arc, adjustment remelting voltage to 40-50V, electric current 3000-5000A；It is slowly melted, is melted by resistance heat from molten electrode bar
Passing through the slag material layer of melting to react with slag charge from molten electrode bar drop and being purified after change, and in the bottom of crystallizer
It recrystallizes, obtains ESR ingot；ESR ingot keeps the temperature 1 hour at a temperature of 1300 ± 5 DEG C, then is forged into casting skin stick or is rolled into
Strip is kept the temperature 3 hours in the case where 1150 DEG C of high-purity hydrogens are protected, is then cooled to room temperature to get soft with the speed of 100-150 DEG C/h
Magnetic permalloy.
The step（1）In from a diameter of 115mm-140mm of molten electrode bar.
The step（2）In from the packing ratio of molten electrode bar and crystallizer be 0.6-0.9.
The step（2）In, the forging ratio of casting skin stick is greater than or equal to 50%.
The step（2）In, casting skin stick is prepared into strip by forging, hot rolling, and the degree of finish of the strip is more than or waits
In 50%.
The step（2）The slag charge of middle electroslag remelting matches：CaF260 parts, Al2O314 parts, CaO 13
Part, 13 parts of MgO.
The present invention melts electrode material certainly：The electrolytic nickel that Ni contents are 99.9%, the electrolytic manganese of Mn contents 99.7%, Si are
99.0% silicon metal, the ingot iron that iron content is 99.5%, slag charge CaF2, A12O3, CaO, content of MgO reaches 99.5%, adopts
With the common raw material of industry in market.
The beneficial effects of the invention are as follows：
（1）Harmful element and field trash can be reduced using the slag system, improve alloy structure.After tested, alloy impurity：C
It is 0.005%；S≤0.008%；P≤0.01%, Cu≤0.06%；Magnetic property index：Initial permeability μ0It is maximum for 2.73mH/m
Magnetic permeability μmFor 35.3mH/m, coercivity HcFor 9.38A/m, saturation induction density BsFor 1.5T.Sulphur, phosphorus in alloy material
Content substantially reduces, and hot-working lumber recovery has reached 95% or so, can improve degree of purity and lumber recovery；
（2）The electro-slag re-melting method makes the harmful element content in alloy reduce, and purity improves, organization optimization, especially
It is to significantly improve its processing performance, substantially increases the lumber recovery of material, is conducive to the comprehensive technical level for promoting the material, pushes away
The industrial progress of dynamic China's smelter and economic development, therefore there is significant economic and social benefit.
Description of the drawings
Fig. 1 is that embodiment 1 prepares soft magnetism permalloy metallographic structure figure.
Specific implementation mode
Embodiment 1
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：49.5 parts（14850g）, Mn：0.4 part
（120g）, Si：0.2 part（60g）, Fe：49.9 parts（14970g）, gross weight 30000g.Through vacuum induction melting, it is cast into diameter
110mm poles, after finishing is sanded in pole surface, as electroslag remelting from molten electrode bar.
（2）Electroslag remelting
The slag charge of electroslag remelting matches: CaF2：55 parts（3850g）；Al2O3：18 parts（1260 g）；CaO：
12 parts（840g）；MgO：15 parts（1050g）, gross weight 7000g.For soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated
It to molten condition, pours into diameter 160mm crystallizers, crystallizer and bottom plate are water-cooled, by step（1）Middle preparation is melted certainly
Electrode bar is slowly declined in the slag charge of the electroslag remelting of melting, after the energization starting the arc, when melting a diameter of 120mm of electrode bar certainly,
Remelting voltage is adjusted to 45V, electric current 4500A；It is slowly melted by resistance heat from molten electrode bar, the certainly molten electrode bar drop after fusing
It reacts and is purified with slag charge across the slag material layer of melting, and recrystallized in the bottom of crystallizer, obtain tissue cause
It is close, uniform, pure, the ESR ingot of any surface finish；ESR ingot heats up 1300 ± 5 DEG C with stove, keeps the temperature 1 hour, then be forged into casting skin
Stick is kept the temperature 3 hours in the case where 1150 DEG C of high-purity hydrogens are protected, is then cooled to room temperature with the speed of 100 DEG C/h, bar vehicle light, inspection
It is obtained after survey after qualification to get soft magnetism permalloy.
After tested, alloy impurity：C is 0.005%；S≤0.007%；P≤0.005%, Cu≤0.003%；Magnetic property index：
Initial permeability μ0For 2.53mH/m, maximum permeability μmFor 32.3mH/m, coercivity HcFor 9.12A/m, saturation induction density
BsFor 1.45T.Achieve the purpose that improve purity and performance, has been suitable for the solenoid valve of marine settings.
Embodiment 2
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：50 parts（15000g）、Mn：0.5 part
（150g）, Si：0.25 part（75g）, Fe：49.25 parts（14775g）, gross weight 30000g.Through vacuum induction melting, it is cast into diameter
120mm poles, after finishing is sanded in pole surface, as electroslag remelting from molten electrode bar.
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF2：60 parts（4200g）；Al2O3：15 parts（1050 g）；CaO：
13 parts（910g）；MgO：12 parts（840g）, gross weight 7000g.For soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to
Molten condition is poured into diameter 160mm crystallizers, and crystallizer and bottom plate are water-cooled, by step（1）The certainly molten electricity of middle preparation
Pole stick is slowly declined in the slag charge of the electroslag remelting of melting, after the energization starting the arc, when melting a diameter of 115mm of electrode bar certainly, is adjusted
Bulk wight melts voltage to 40V, electric current 3000A；It is slowly melted by resistance heat from molten electrode bar, being worn from molten electrode bar drop after fusing
The slag material layer for crossing melting reacts with slag charge and is purified, and is recrystallized in the bottom of crystallizer, obtain dense structure,
Uniformly, pure, the ESR ingot of any surface finish；ESR ingot heats up 1300 ± 5 DEG C with stove, keeps the temperature 1 hour, then be forged into casting skin stick,
3 hours are kept the temperature in the case where 1150 DEG C of high-purity hydrogens are protected, is then cooled to room temperature with the speed of 110 DEG C/h, forging stick, which rerolls, is made thickness
Degree 0.5, width 15mm bands are to get soft magnetism permalloy band finished product.
After tested, alloy impurity：C is 0.005%；S≤0.004%；P≤0.005%, Cu≤0.002%；Magnetic property index：
Initial permeability μ0For 2.90mH/m, maximum permeability μmFor 38.2mH/m, coercivity HcFor 9.45A/m, saturation induction density
BsFor 1.54T.Achieve the purpose that improve purity and performance, has been suitable for the solenoid valve of industrial substation output system.
Embodiment 3
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：50.5 parts（15150g）、Mn：0.4 part
（120g）, Si：0.3 part（90g）, Fe：48.8 parts（14640g）, gross weight 30000g.Through vacuum induction melting, it is cast into diameter
140mm poles, after finishing is sanded in pole surface, as electroslag remelting from molten electrode bar.
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF2：58 parts（4060g）；Al2O3：16 parts（1120 g）；CaO：
14 parts（980g）；MgO：12 parts（840g）, gross weight 7000g.For soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to
Molten condition is poured into diameter 160mm crystallizers, and crystallizer and bottom plate are water-cooled, by step（1）The certainly molten electricity of middle preparation
Pole stick is slowly declined in the slag charge of the electroslag remelting of melting, after the energization starting the arc, when melting a diameter of 130mm of electrode bar certainly, is adjusted
Bulk wight melts voltage to 48V, electric current 4500A；It is slowly melted by resistance heat from molten electrode bar, being worn from molten electrode bar drop after fusing
The slag material layer for crossing melting reacts with slag charge and is purified, and is recrystallized in the bottom of crystallizer, obtain dense structure,
Uniformly, pure, the ESR ingot of any surface finish；ESR ingot heats up 1300 ± 5 DEG C with stove, keeps the temperature 1 hour, then be forged into casting skin stick,
Keep the temperature 3 hours in the case where 1150 DEG C of high-purity hydrogens are protected, be cooled to room temperature with the speed of 120 DEG C/h, then through be rolled into thickness 0.3,
Width 10mm bands are to get soft magnetism permalloy band finished product.
After tested, alloy impurity：C is 0.006%；S≤0.005%；P≤0.005%, Cu≤0.004%；Magnetic property index：
Initial permeability μ0For 2.79mH/m, maximum permeability μmFor 36.7mH/m, coercivity HcFor 9.77A/m, saturation induction density
BsFor 1.45T.Achieve the purpose that improve purity and performance, the solenoid valve suitable for sewage treatment project.
Embodiment 4
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：49 parts, Mn：0.6 part, Si：0.15
Part, Fe：50.25 parts.Through vacuum induction melting, diameter 140mm poles are cast into, it is as electric after finishing is sanded in pole surface
The certainly molten electrode bar of slag remelting.
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF2：65 parts；Al2O3：10 parts；CaO：10 parts；MgO：15 parts.With
In soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to molten condition, is poured into diameter 160mm crystallizers, crystallizer
It is water-cooled with bottom plate, by step（1）In the slag charge of the electroslag remelting for being slowly declined to melting from molten electrode bar of middle preparation,
After the energization starting the arc, adjustment remelting voltage to 48V, electric current 4500A；Slowly melted by resistance heat from molten electrode bar, after fusing from
Molten electrode bar drop passes through the slag material layer of melting to react and purified with slag charge, and is tied again in the bottom of crystallizer
Crystalline substance obtains dense structure, uniform, pure, the ESR ingot of any surface finish；ESR ingot heats up 1300 ± 5 DEG C with stove, keeps the temperature 1 hour,
It is forged into casting skin stick again, keeps the temperature 3 hours in the case where 1150 DEG C of high-purity hydrogens are protected, is cooled to room temperature with the speed of 130 DEG C/h, then pass through
Thickness 0.3, width 10mm bands are rolled into get soft magnetism permalloy band finished product.
Embodiment 5
（1）From the preparation of molten electrode bar
The food ingredient of soft magnetism permalloy from molten electrode bar is by weight：Ni：51 parts, Mn：0.3 part, Si：0.3 part,
Fe：48.4 parts.Through vacuum induction melting, diameter 140mm poles are cast into, after finishing is sanded in pole surface, as electroslag weight
Molten certainly molten electrode bar.
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF2：60 parts；Al2O3：14 parts；CaO：13 parts；MgO：13 parts.With
In soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to molten condition, is poured into diameter 160mm crystallizers, crystallizer
It is water-cooled with bottom plate, by step（1）In the slag charge of the electroslag remelting for being slowly declined to melting from molten electrode bar of middle preparation,
After the energization starting the arc, when melting a diameter of 140mm of electrode bar certainly, adjustment remelting voltage to 50V, electric current 5000A；From molten electrode bar by
Resistance heat slowly melts, passing through the slag material layer of melting to react with slag charge from molten electrode bar drop and being carried after fusing
It is pure, and recrystallized in the bottom of crystallizer, obtain dense structure, uniform, pure, the ESR ingot of any surface finish；ESR ingot with
Stove heats up 1300 ± 5 DEG C, keeps the temperature 1 hour, then be forged into casting skin stick, and 3 hours are kept the temperature in the case where 1150 DEG C of high-purity hydrogens are protected, with
The speed of 150 DEG C/h is cooled to room temperature, then through be rolled into thickness 0.3, width 10mm bands to get soft magnetism permalloy band at
Product.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of electro-slag re-melting method of soft magnetism permalloy, it is characterised in that include the following steps：
（1）From the preparation of molten electrode bar
In terms of 100 parts of total number, the food ingredient of soft magnetism permalloy from molten electrode bar is by weight：49-51 parts of Ni, Mn
0.3-0.6 parts, 0.15-0.3 parts of Si, surplus Fe；Through vacuum induction melting, it is cast into pole, finishing is sanded in pole surface
Afterwards, as electroslag remelting from molten electrode bar；
（2）Electroslag remelting
The slag charge of electroslag remelting matches：CaF255-65 parts, Al2O310-16 parts, 10-14 parts of CaO, MgO
12-15 parts, it is used for soft magnetism permalloy electroslag remelting, above-mentioned slag charge is heated to molten condition, is poured into crystallizer, crystallizer
It is water-cooled with bottom plate, by step（1）In the slag charge of the electroslag remelting for dropping to melting from molten electrode bar of middle preparation, it is powered
After the starting the arc, adjustment remelting voltage to 40-50V, electric current 3000-5000A；It is slowly melted by resistance heat from molten electrode bar, after fusing
Pass through the slag material layer of melting to react and purified with slag charge from molten electrode bar drop, and the bottom of crystallizer again
Crystallization, obtains ESR ingot；ESR ingot keeps the temperature 1 hour at a temperature of 1300 ± 5 DEG C, then is forged into casting skin stick or is rolled into plate
Band, casting skin stick are prepared into strip by forging, hot rolling, and the degree of finish of the strip is greater than or equal to 50%, in 1150 DEG C of High Purity Hydrogens
3 hours are kept the temperature under gas shielded, is then cooled to room temperature to get soft magnetism permalloy with the speed of 100-150 DEG C/h.
2. the electro-slag re-melting method of soft magnetism permalloy according to claim 1, it is characterised in that：The step（1）In
From a diameter of 115mm-140mm of molten electrode bar.
3. the electro-slag re-melting method of soft magnetism permalloy according to claim 1, it is characterised in that：The step（2）In
It is 0.6-0.9 from the packing ratio of molten electrode bar and crystallizer.
4. the electro-slag re-melting method of soft magnetism permalloy according to claim 1, it is characterised in that：The step（2）In,
The forging ratio of casting skin stick is greater than or equal to 50%.
5. the electro-slag re-melting method of soft magnetism permalloy according to claim 1, it is characterised in that：The step（2）In
The slag charge of electroslag remelting matches：CaF260 parts, Al2O314 parts, 13 parts of 13 parts of CaO, MgO.
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