CN109811200A - A kind of high intensity 1J22 band and preparation method thereof - Google Patents
A kind of high intensity 1J22 band and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high intensity 1J22 bands and preparation method thereof, belong to alloy material machining field, high intensity 1J22 band increases Nb and Cr in original ingredient, pass through special treatment process, it has been obviously improved the mechanical performance of 1J22 band, so that high intensity 1J22 alloy can satisfy coercive force Hc≤110A/m, tensile strength Rm > 590MPa, yield strength ReL > 360Mpa, it is quickly cooled down involved in the production method of the 1J22 band, the technical points such as cryosel water quenching, the magnetic property for solving material after existing ferrocobalt 1J22 band is heat-treated is high, but mechanical properties strength is poor, the low technical problem of life of product.
Description
Technical field
The invention belongs to alloy material machining fields more particularly to a kind of high intensity 1J22 band and preparation method thereof.
Background technique
Magnetically soft alloy is a kind of important metal soft magnetic material, has good magnetic property, and Curie temperature is up to 980
DEG C, the saturation induction density under room temperature is up to 2.4T and high magnetic conductivity and low coercivity soft magnetic iron alloy is mainly answered
In for transformer and motor, and for making phone number machine diaphragm, the embedding iron of high-speed printer and receiver coil etc..Together
When, which can be significantly reduced weight, reduces volume compared with other materials, have in fields such as Aeronautics and Astronautics other soft
Magnetic alloy it is irreplaceable apply status, wherein most important application is exactly to make aerogenerator core component --- rotor and
Stator.
But the bad mechanical property of magnetically soft alloy after heat treatment, it is deformed influence after a period of use and uses effect
Fruit is generally generally less than less than 790 MPa, yield strength REL by the 1J22 that existing method makes, tensile strength Rm
360MPa。
The main reason for causing the above problem is existing 1J22 heat treatment process existing defects, common processing method packet
Include: 850-900 DEG C of heating temperature, soaking time 3-6 hours, cooling system was with the speed cooling duct of 50 DEG C/h-100 DEG C/h
750 DEG C, 300 DEG C or less then are cooled to the speed of 180 DEG C -240 DEG C/h and is come out of the stove.Above-mentioned processing scheme and other similar
In technical solution: heating time, cooling velocity, hardening heat etc. require to improve, further to promote 1J22 cold-strip
Mechanical performance.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of high intensity 1J22 band and its production
Method, high intensity 1J22 band increase Nb and Cr in original ingredient, by special treatment process, are obviously improved
The mechanical performance of 1J22 band, so that high intensity 1J22 alloy can satisfy coercive force Hc≤110A/m, tensile strength Rm
> 590MPa, yield strength ReL > 360Mpa, rapid cooling, cryosel water quenching involved in the production method of the 1J22 band
Etc. technical points, the magnetic property for solving material after the heat treatment of existing ferrocobalt 1J22 band is high, but mechanical properties strength is poor, production
Product service life low technical problem.
In order to realize above system, the technical solution adopted by the present invention is that:
A kind of high intensity 1J22 band, which is characterized in that V, 0.03- of Co, 1.5-2.5 parts by weight containing 47-51 parts by weight
The Fe of the Cr and 47.2-50.8 parts by weight of Nb, 0.01-0.2 parts by weight of 0.5 parts by weight.
Preferably, the oxygen content of 1J22 band is less than 100PPm.
Preferably, 1J22 band with a thickness of 1.8-2.5mm.
Preferably, also contain C, Si, Mn, P, S, Ni and Cu, less than 0.02 parts by weight, the Si's contains the content of the C
Amount is less than 0.02 parts by weight, and the content of the Mn is less than 0.02 parts by weight, and the content of the P is less than 0.015 parts by weight, the S
Content less than 0.015 parts by weight, the content of the Ni is less than 0.015 parts by weight, and the content of Cu is less than 0.015 parts by weight.
Above-mentioned high intensity 1J22 band production method has the following beneficial effects:
High intensity 1J22 band increases Nb and Cr in original ingredient, by special treatment process, is obviously improved
The mechanical performance and wearability of 1J22 band resist so that high intensity 1J22 alloy can satisfy coercive force Hc≤110A/m
Tensile strength Rm > 590MPa, yield strength ReL > 360Mpa.
A kind of method of high intensity 1J22 band, which comprises the steps of:
(1) vacuum metling: the raw material of 1J22 being fitted into vaccum sensitive stove and carry out vacuum metling, before tapping 8-15 minutes to true
Molten steel in sky smelting is incorporated Nb and Cr, and the molten steel after making vacuum metling contains Co, 1.5-2.5 parts by weight of 47-51 parts by weight
V, 0.03-0.5 parts by weight Nb, 0.01-0.2 parts by weight Cr and 47.2-50.8 parts by weight Fe；
(2) it pours: pouring steel ingot using the molten steel, pour oxygen content≤100ppm of steel ingot；
(3) it forges: taking the oxide skin of the steel ingot off, the steel ingot after stripping off the skin is forged into slab；
(4) it is dissolved: the slab being fitted into vaccum sensitive stove and is heated 2-5 hours, heating temperature is 800-1200 DEG C；
(5) hot rolling: the slab after solid solution is rolled into made-up belt, the hot rolled thickness of the made-up belt is 1.9-2.6mm；
(6) it quenches: the made-up belt after hot rolling is put into cryosel quenching-in water；
(7) reconditioning cold rolling: by quenched made-up belt reconditioning, it is cold-rolled to finished product 1J22 band；
(8) it is heat-treated: the 1J22 band being fitted into heat-treatment furnace and is heated to 770-790 DEG C, heat treated in heating process
Hydrogen shield is continually fed into the heating chamber of furnace；
(9) it keeps the temperature: will warm up 770-790 DEG C of 1J22 band and keep the temperature 3-4h in the hydrogen gas atmosphere；
(10) cooling: with the cooling velocity of >=400 DEG C/h, 1J22 band to be cooled to 190-210 DEG C, is come out of the stove.
Specifically, the cooling velocity with >=400 DEG C/h includes:
Argon gas jet pipe is provided in the heating chamber of heat-treatment furnace, argon gas jet pipe is connected with liquid argon gas source by valve, utilizes
Low temperature argon gas is with the cooling J22 band of the cooling velocity of >=400 DEG C/h.
Specifically, it is characterized in that, being continually fed into hydrogen in the heating chamber of heat treated furnace in the heating process and including:
Hydrogen jet pipe is provided in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid hydrogen source by valve, utilizes
Hydrogen jet pipe is continually fed into hydrogen in the heating chamber of heat treated furnace during heating.
Specifically, the temperature of the brine ice is 0 to -10 DEG C.
Specifically, oxygen content≤the 100ppm for pouring steel ingot includes:
Vacuum deaeration is carried out using vaccum sensitive stove molten steel, vacuum degree≤0.2Pa in furnace is controlled, so that pouring the oxygen of steel ingot
Content≤100ppm.
A kind of production method of high intensity 1J22 band, has the following beneficial effects:
(1) 1J22 material to be processed is put into vaccum sensitive stove and heats, is heated to 770- by hydrogen environment heating technique scheme
790 DEG C, hydrogen is continually fed into heating process in the heating chamber of heat treated furnace, can effectively avoid material in the hydrogen gas atmosphere
Oxidation, heats the material near 780 DEG C, can refine crystal grain, improves mechanical performance.
(2) it is quickly cooled down scheme: with the cooling velocity of >=400 DEG C/h, 770-790 DEG C of 1J22 band being cooled to 200
DEG C, this rapid cooling scheme relies on low temperature argon gas, and the ordering of crystal phase tissue can be prevented by being quickly cooled down, and reduces crisp
Property, improve mechanical performance.
(3) element adds: adding Nb, Cr to 1J22 band in the suitable time, can significantly improve the machine of 1J22 band
Tool performance improves mechanical performance this is because the Nb of addition can play the role of solution strengthening.
(4) cryosel water quenching: using the low-temperature characteristics of brine ice, crystal structure phase transformation is prevented, improves mechanical performance.
Specific embodiment
In the description of the present invention, term " first ", " second " are used for description purposes only, and should not be understood as instruction or
It implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise saying
Bright, the meaning of " plurality " is two or more.
Embodiment one
A kind of high intensity 1J22 band, is made especially by following steps:
(1) vacuum metling: the raw material of 1J22 being fitted into vaccum sensitive stove and carry out vacuum metling, and tapping first 8 minutes to vacuum
Molten steel in smelting is incorporated Nb and Cr, and the molten steel after making vacuum metling contains the Co of 47 parts by weight, the V of 1.5 parts by weight, 0.03 weight
Measure the Nb, the Cr of 0.01 parts by weight and the Fe of 47.2 parts by weight of part；
Wherein, the raw material of 1J22 are smelted in vaccum sensitive stove into molten steel, before tapping at 8 minutes, to molten steel supplying Nb and
Cr.It should be noted that the impurity of 1J22 band, the lower the content such as C, Si, Mn, P, S, Ni and Cu the better, and the content of C is small
In 0.02 parts by weight, the content of Si is less than 0.02 parts by weight, and less than 0.02 parts by weight, the content of P is less than the content of Mn
0.015 parts by weight, the content of the S is less than 0.015 parts by weight, and for the content of the Ni less than 0.015 parts by weight, the content of Cu is small
In 0.015 parts by weight.
(2) it pours: pouring steel ingot using the molten steel, pour oxygen content≤100ppm of steel ingot；
Specifically, carrying out vacuum deaeration using vaccum sensitive stove molten steel, vacuum degree≤0.2Pa in furnace is controlled, so that pouring steel
Oxygen content≤100ppm of ingot.
(3) it forges: taking the oxide skin of the steel ingot off, the steel ingot after stripping off the skin is forged into slab；
(4) it is dissolved: the slab being fitted into vaccum sensitive stove and is heated 2 hours, heating temperature is 1200 DEG C；
(5) hot rolling: the slab after solid solution is rolled into made-up belt, the hot rolled thickness of the made-up belt is 1.9mm；
(6) it quenches: the made-up belt after hot rolling is put into cryosel quenching-in water；
Specifically, the temperature of brine ice is -10 DEG C.
(7) reconditioning cold rolling: by quenched made-up belt reconditioning, it is cold-rolled to finished product 1J22 band；
(8) it is heat-treated: the 1J22 band being fitted into vaccum sensitive stove and is heated to 790 DEG C, heat treated furnace in heating process
Heating chamber in be continually fed into hydrogen shield；
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid hydrogen by valve
Source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
(9) it keeps the temperature: will warm up 790 DEG C of 1J22 band and keep the temperature 3h in the hydrogen gas atmosphere；
(10) cooling: with the cooling velocity of >=400 DEG C/h, 1J22 band to be cooled to 210 DEG C, is come out of the stove.
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid by valve
Hydrogen source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
The high-intensitive 1J22 band made according to above-mentioned steps, increases NB and Cr in original ingredient, passes through spy
Different treatment process has been obviously improved the mechanical performance of 1J22 band, so that high intensity 1J22 alloy can satisfy coercive force
100 A/m of power≤Hc≤110A/m, 650 MPa > Rm > 590MPa, yield strength 400Mpa > ReL > of tensile strength
360Mpa solves the magnetic property height of material after existing ferrocobalt 1J22 band heat treatment, but mechanical properties strength is poor, product
Service life low technical problem.
Embodiment two
A kind of high intensity 1J22 band, is made especially by following steps:
(1) vacuum metling: the raw material of 1J22 being fitted into vaccum sensitive stove and carry out vacuum metling, and tapping first 15 minutes to vacuum
Molten steel in smelting is incorporated Nb and Cr, and the molten steel after making vacuum metling contains the Co of 51 parts by weight, the V of 2.5 parts by weight, 0.5 weight
Measure the Nb, the Cr of 0.2 parts by weight and the Fe of 50.8 parts by weight of part；
Specifically, the impurity of 1J22 band, the lower the content such as C, Si, Mn, P, S, Ni and Cu the better, and the content of C is less than 0.02
Parts by weight, the content of Si is less than 0.02 parts by weight, and the content of Mn is less than 0.02 parts by weight, and the content of P is less than 0.015 weight
Part, the content of the S is less than 0.015 parts by weight, and the content of the Ni is less than 0.015 parts by weight, and the content of Cu is less than 0.015 weight
Measure part.
(2) it pours: pouring steel ingot using the molten steel, pour oxygen content≤100ppm of steel ingot；
Specifically, carrying out vacuum deaeration using vaccum sensitive stove molten steel, vacuum degree≤0.2Pa in furnace is controlled, so that pouring steel
Oxygen content≤100ppm of ingot.
(3) it forges: taking the oxide skin of the steel ingot off, the steel ingot after stripping off the skin is forged into slab；
(4) it is dissolved: the slab being fitted into vaccum sensitive stove and is heated 5 hours, heating temperature is 800 DEG C；
(5) hot rolling: the slab after solid solution is rolled into made-up belt, the hot rolled thickness of the made-up belt is 2.6mm；
(6) it quenches: the made-up belt after hot rolling is put into cryosel quenching-in water；
Specifically, the temperature of brine ice is 0 DEG C.
(7) reconditioning cold rolling: by quenched made-up belt reconditioning, it is cold-rolled to finished product 1J22 band；
(8) it is heat-treated: the 1J22 band being fitted into vaccum sensitive stove and is heated to 770 DEG C, heat treated furnace in heating process
Heating chamber in be continually fed into hydrogen shield；
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid hydrogen by valve
Source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
(9) it keeps the temperature: will warm up 770 DEG C of 1J22 band and keep the temperature 3h in the hydrogen gas atmosphere；
(10) cooling: with the cooling velocity of >=400 DEG C/h, 1J22 band to be cooled to 190 DEG C, is come out of the stove.
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid by valve
Hydrogen source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
The high-intensitive 1J22 band made according to above-mentioned steps, increases NB and Cr in original ingredient, passes through spy
Different treatment process has been obviously improved the mechanical performance of 1J22 band, so that high intensity 1J22 alloy can satisfy coercive force
100 A/m of power≤Hc≤110A/m, 650 MPa > Rm > 590MPa, yield strength 400Mpa > ReL > of tensile strength
360Mpa solves the magnetic property height of material after existing ferrocobalt 1J22 band heat treatment, but mechanical properties strength is poor, product
Service life low technical problem.
Embodiment three
A kind of high intensity 1J22 band, is made especially by following steps:
(1) vacuum metling: the raw material of 1J22 being fitted into vaccum sensitive stove and carry out vacuum metling, and tapping first 10 minutes to vacuum
Molten steel in smelting is incorporated Nb and Cr, and the molten steel after making vacuum metling contains the Co of 50 parts by weight, the V of 2 parts by weight, 0.25 weight
The Nb, the Cr of 0.015 parts by weight and the Fe of 48 parts by weight of part；
Specifically, the impurity of 1J22 band, the lower the content such as C, Si, Mn, P, S, Ni and Cu the better, and the content of C is less than 0.02
Parts by weight, the content of Si is less than 0.02 parts by weight, and the content of Mn is less than 0.02 parts by weight, and the content of P is less than 0.015 weight
Part, the content of the S is less than 0.015 parts by weight, and the content of the Ni is less than 0.015 parts by weight, and the content of Cu is less than 0.015 weight
Measure part.
(2) it pours: pouring steel ingot using the molten steel, pour oxygen content≤100ppm of steel ingot；
Specifically, carrying out vacuum deaeration using vaccum sensitive stove molten steel, vacuum degree≤0.2Pa in furnace is controlled, so that pouring steel
Oxygen content≤100ppm of ingot.
(3) it forges: taking the oxide skin of the steel ingot off, the steel ingot after stripping off the skin is forged into slab；
(4) it is dissolved: the slab being fitted into vaccum sensitive stove and is heated 4 hours, heating temperature is 950 DEG C；
(5) hot rolling: the slab after solid solution is rolled into made-up belt, the hot rolled thickness of the made-up belt is 2mm；
(6) it quenches: the made-up belt after hot rolling is put into cryosel quenching-in water；
Specifically, the temperature of brine ice is -5 DEG C.
(7) reconditioning cold rolling: by quenched made-up belt reconditioning, it is cold-rolled to finished product 1J22 band；
(8) it is heat-treated: the 1J22 band being fitted into vaccum sensitive stove and is heated to 780 DEG C, heat treated furnace in heating process
Heating chamber in be continually fed into hydrogen shield；
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid hydrogen by valve
Source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
(9) it keeps the temperature: will warm up 780 DEG C of 1J22 band and keep the temperature 3.5h in the hydrogen gas atmosphere；
(10) cooling: with the cooling velocity of >=400 DEG C/h, 1J22 band to be cooled to 200 DEG C, is come out of the stove.
Specifically, being provided with hydrogen jet pipe in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid by valve
Hydrogen source, using being continually fed into hydrogen in hydrogen the jet pipe during heating heating chamber of heat treated furnace.
The high-intensitive 1J22 band made according to above-mentioned steps, increases NB and Cr in original ingredient, passes through spy
Different treatment process has been obviously improved the mechanical performance of 1J22 band, so that high intensity 1J22 alloy can satisfy coercive force
100 A/m of power≤Hc≤110A/m, 650 MPa > Rm > 590MPa, yield strength 400Mpa > ReL > of tensile strength
360Mpa solves the magnetic property height of material after existing ferrocobalt 1J22 band heat treatment, but mechanical properties strength is poor, product
Service life low technical problem.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of high intensity 1J22 band, which is characterized in that the V of Co, 1.5-2.5 parts by weight containing 47-51 parts by weight,
The Fe of the Cr and 47.2-50.8 parts by weight of Nb, 0.01-0.2 parts by weight of 0.03-0.5 parts by weight.
2. high intensity 1J22 band according to claim 1, which is characterized in that the oxygen content of 1J22 band is less than
100PPm。
3. high intensity 1J22 band according to claim 1, which is characterized in that 1J22 band with a thickness of 1.8-2.5mm.
4. high intensity 1J22 band according to claim 1, which is characterized in that also contain C, Si, Mn, P, S, Ni and Cu,
The content of the C is less than 0.02 parts by weight, and the content of the Si is less than 0.02 parts by weight, and the content of the Mn is less than 0.02 weight
Part, the content of the P is less than 0.015 parts by weight, and less than 0.015 parts by weight, the content of the Ni is less than the content of the S
0.015 parts by weight, the content of Cu is less than 0.015 parts by weight.
5. the method for making the high-intensitive 1J22 band as described in any one of Claims 1-4, which is characterized in that including
Following steps:
(1) vacuum metling: the raw material of 1J22 being fitted into vaccum sensitive stove and carry out vacuum metling, before tapping 8-15 minutes to true
Molten steel in sky smelting is incorporated Nb and Cr, and the molten steel after making vacuum metling contains Co, 1.5-2.5 parts by weight of 47-51 parts by weight
V, 0.03-0.5 parts by weight Nb, 0.01-0.2 parts by weight Cr and 47.2-50.8 parts by weight Fe；
(2) it pours: pouring steel ingot using the molten steel, pour oxygen content≤100ppm of steel ingot；
(3) it forges: taking the oxide skin of the steel ingot off, the steel ingot after stripping off the skin is forged into slab；
(4) it is dissolved: the slab being fitted into vaccum sensitive stove and is heated 2-5 hours, heating temperature is 800-1200 DEG C；
(5) hot rolling: the slab after solid solution is rolled into made-up belt, the hot rolled thickness of the made-up belt is 1.9-2.6mm；
(6) it quenches: the made-up belt after hot rolling is put into cryosel quenching-in water；
(7) reconditioning cold rolling: by quenched made-up belt reconditioning, it is cold-rolled to finished product 1J22 band；
(8) it is heat-treated: the 1J22 band being fitted into heat-treatment furnace and is heated to 770-790 DEG C, heat treated in heating process
Hydrogen shield is continually fed into the heating chamber of furnace；
(9) it keeps the temperature: will warm up 770-790 DEG C of 1J22 band and keep the temperature 3-4h in the hydrogen gas atmosphere；
(10) cooling: with the cooling velocity of >=400 DEG C/h, 1J22 band to be cooled to 190-210 DEG C, is come out of the stove.
6. a kind of production method of high intensity 1J22 band according to claim 5, which is characterized in that it is described with >=400 DEG C/
The cooling velocity of h includes:
Argon gas jet pipe is provided in the heating chamber of heat-treatment furnace, argon gas jet pipe is connected with liquid argon gas source by valve, utilizes
Low temperature argon gas is with the cooling J22 band of the cooling velocity of >=400 DEG C/h.
7. a kind of production method of high intensity 1J22 band according to claim 5, which is characterized in that in the heating process
Being continually fed into hydrogen in the heating chamber of heat treated furnace includes:
Hydrogen jet pipe is provided in the heating chamber of heat-treatment furnace, hydrogen jet pipe is connected with liquid hydrogen source by valve, utilizes
Hydrogen jet pipe is continually fed into hydrogen in the heating chamber of heat treated furnace during heating.
8. a kind of production method of high intensity 1J22 band according to claim 5, which is characterized in that the temperature of the brine ice
Degree is 0 to -10 DEG C.
9. a kind of production method of high intensity 1J22 band according to claim 5, which is characterized in that the steel ingot that pours
Oxygen content≤100ppm includes:
Vacuum deaeration is carried out to molten steel using vaccum sensitive stove, vacuum degree≤0.2Pa in furnace is controlled, so that pouring steel ingot
Oxygen content≤100ppm.
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| CN110129535A (en) * | 2019-06-17 | 2019-08-16 | 陕西新精特钢研精密合金有限公司 | A kind of high intensity 1J22 bar and preparation method thereof |
| CN112680578A (en) * | 2020-12-18 | 2021-04-20 | 孙学银 | Heat treatment preparation method of FeCo soft magnetic alloy with high magnetic permeability and high saturation density |
| CN113913649A (en) * | 2021-10-14 | 2022-01-11 | 陕西新精特钢研精密合金有限公司 | 1J22 alloy with high mechanical property and high magnetic property and manufacturing process thereof |
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| CN105543696A (en) * | 2015-12-08 | 2016-05-04 | 中国航空工业集团公司北京航空材料研究院 | Superhigh strength soft magnetic alloy belt, its preparation method and heat treatment method of superhigh strength soft magnetic alloy belt product |
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| WO2003044812A1 (en) * | 2001-11-22 | 2003-05-30 | Sumitomo Special Metals Co., Ltd. | Nanocomposite magnet |
| CN101441915A (en) * | 2008-09-17 | 2009-05-27 | 安泰科技股份有限公司 | Amorphous soft magnetic alloy coatings and preparation method thereof |
| CN104114724A (en) * | 2011-12-16 | 2014-10-22 | 艾普伦 | Process for manufacturing a thin strip made of soft magnetic alloy and strip obtained |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110129535A (en) * | 2019-06-17 | 2019-08-16 | 陕西新精特钢研精密合金有限公司 | A kind of high intensity 1J22 bar and preparation method thereof |
| CN112680578A (en) * | 2020-12-18 | 2021-04-20 | 孙学银 | Heat treatment preparation method of FeCo soft magnetic alloy with high magnetic permeability and high saturation density |
| CN112680578B (en) * | 2020-12-18 | 2022-01-11 | 孙学银 | Heat treatment preparation method of FeCo soft magnetic alloy with high magnetic permeability and high saturation density |
| CN113913649A (en) * | 2021-10-14 | 2022-01-11 | 陕西新精特钢研精密合金有限公司 | 1J22 alloy with high mechanical property and high magnetic property and manufacturing process thereof |
| CN113913649B (en) * | 2021-10-14 | 2022-08-02 | 陕西新精特钢研精密合金有限公司 | 1J22 alloy with high mechanical property and high magnetic property and manufacturing process thereof |
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