CN1008570B - Process for manufacturing magnetic core with constant permeability - Google Patents
Process for manufacturing magnetic core with constant permeabilityInfo
- Publication number
- CN1008570B CN1008570B CN 85100770 CN85100770A CN1008570B CN 1008570 B CN1008570 B CN 1008570B CN 85100770 CN85100770 CN 85100770 CN 85100770 A CN85100770 A CN 85100770A CN 1008570 B CN1008570 B CN 1008570B
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- CN
- China
- Prior art keywords
- magnetic field
- heat treatment
- iron core
- power supply
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Soft Magnetic Materials (AREA)
Abstract
The present invention relates to a novel constant permeability magnetic core 1J34H which belongs to a constant permeability alloy element in a soft magnetic alloy system and is applied in an instrument and a meter in electronic industry. The element can be used as an inductive element in a direct current power supply, an energy storage element and an isolation transformer in a high frequency power supply and a pulse transformer in a pulse power supply. The successful research of the element is due to adopting a special cold working technology and a final heat treatment technology of the element. The peculiarity of the two kinds of technologies makes a magnetic field used by the element wide (0 to 8Oe), the alternating current-direct current overlapped magnetoconductivity (1000 Gs/Oe) high and output induction value big. Due to little element iron loss, the applied frequency is high (1k to 20kHz).
Description
The invention belongs to the manufacture method of electronics industry Yong Heng conducting magnet core.
Classical Pa Mingwa Heng permeability alloys is with the slow method of cooling of high annealing; obtain the Heng magnetic property, but its magnetic is led the fixed magnetic field range of rate Heng minimum (2.4A/cm), surpasses this magnetic field range, magnetic permeability is anxious to be increased, and says that strictly it is not real De “ Heng magnetic conduction ".The coercive force of this alloy and loss are very big in addition, do not have practical application so far.
The Heng conducting magnet core composition of Ben Faming and the 1J34 alloy type among the international GBn202-83 seemingly, but manufacture craft particularly Technology for Heating Processing is different fully, so magnetic property is also different fully.1J34 obtains rectangular hysteresis loop for handling through longitudinal magnetic field, and this alloy obtains to have flat magnetic hysteresis loop De Heng conducting magnet core (Ci Dao Shuai Heng decide scope reach 8A/cm) event called after 1J34h for handling through transverse magnetic field.
Also developed a few Zhong Heng permeability alloys in recent years both at home and abroad, but composition, performance or manufacture method are all different with the present invention.
Table 1 has been listed the composition contrast of low Sheng Ci Heng permeability alloys both at home and abroad.
Fig. 2 is the contrast of Guo Nei Wai Heng permeability alloys characteristic.
Task of the present invention is to replace iron nickel magnetic core and silicon steel open core, improves performance, dwindles the volume weight of magnetic element.
Replace performance similar Soviet Union alloy 47HK, the cobalt of conserve expensive reduces the wastage, and reduces the temperature rise heating.
The present invention is:
(1) alloying component:
Ni 33.5～35.5%
Co 28.5～30.5%
Mo 2.8～3.5%
Fe is surplus
(2) alloy characteristic:
* μ is H=80,240,400,640, and the mean value of 800A/m Xia Zhu magnetic permeability.
In frequency is 400Hz, and the simple alternating current magnetic strength changes under the △ B=0.01T, and D.C. magnetic field is in 0～640A/m, and effective permeability μ e 〉=1.25mH/m(is 1000Gs/Oe).Performance under the unipolar pulse magnetization sees Table 2.
Other physical properties: resistivity 50 μ Ω-cm, proportion 8.7g/cm
3, 600 ℃ of Curie temperature.
Fig. 3 is the direct current magnetic hysteresis loop of this alloy-iron core.
Fig. 1 is the magnetic permeability and the magnetic field dependence curve of this alloy-iron core.
(3) technical process:
Vacuum degree 10
-3The above vacuum induction furnace smelting of mmHg post
Hot working: 1250 ± 10 ℃ are incubated 1 hour
Cold working: cold rolling final drafts 70～85%.Steel band shearing, coiling, coating are become the different size iron core
Final Technology for Heating Processing:
1. high annealing: (vacuum treatment vacuum degree 10
-3～10
-4MmHg or hydrogen treat)
Be warming up to 1000 ℃～1150 ℃ insulations with stove and be cooled to 600 ℃～700 ℃ with 100 ℃/speed at one hour rating after 2～4 hours, cooling fast (draw in water jacket cold or to push away stove cold) is come out of the stove.
2. transverse magnetic field is handled
Be warming up to 600 ℃～700 ℃ with stove and add magnetic field insulation 1～2 hour, be cooled to come out of the stove below 300 ℃ with 20 ℃/speed at one hour rating then.Magnetic field intensity is 320～480A/cm.
The pulse performance * of table 2 alloy of the present invention
Pulsewidth τ (μ s) 0.5 15 10
Pulse permeability μ P 1.88 2.55 7.88 14.6
mH/m （1500） （2040） （6300） （11700）
（Gs/Oe）
＊△B＝0.1T f＝1KHz
Effect:
The present invention's's (1J34H iron core) success makes China develop a kind of Xin Xing Heng conducting magnet core, has filled up the blank of this alloy series.The 1J34H iron core is mainly used in the no power frequency supply, does inductance element, makes weight saving, and volume-diminished, inductance output variable greater than ten times of ferrocart cores, are a kind of good inductance element greater than two times of 1J66 alloys.Simultaneously, this iron core can also be done the wide pulse transformer core for (5～10 μ S) of pulse.In some cases, also can be Chu can inductance and isolating transformer.Because the excellent properties and the extensive use of this iron core are so apply in instrument and meter industry.
Table 3: the composition of low both at home and abroad Br alloy and with the contrast of alloy of the present invention
Other element of Fe of trade mark Ni Co
47HK 46-48 22.5-23.5 is surplus
4JHKX 46-48 21.5-22.5 Cr1.8-2.2 is surplus
40HKM 39.5-40.5 24.5-26.0 Mo3.9-4.1 is surplus
64H 63-65 is surplus
68HM 67-69 Mo1.5-2.5 is surplus
53H-BN 52.5-54 is surplus
1J34Kh 35-38.5 28.5-30 Nb1.5-2.5 is surplus
1J67h 64.5-66 Mo1.8-2.2 is surplus
1J66 64.5-65.5 Mn0.7-1.1 is surplus
1J50h 49-51 is surplus
1J34h 33.5-35.5 28.5-30.5 Mo2.8-3.5 of the present invention is surplus
Description of drawings:
Fig. 1 1J34H alloy μ ≈ is with the H=change curve
The contrast of Fig. 2 Guo Nei Wai Heng magnetic conduction magnetic
1. 2. 3. Ni47Co23Cr(Soviet Union of 1J66 of 1J792)
4. 1J34H(iron core of the present invention).5. 1J34Kh ⑥ Heng magnetic conduction Si-Fe
⑦1J50H
Fig. 3 1J34H magnetic hysteresis loop
Example:
A, smelting process and the one-tenth amount of being dispensed into
(1) adopt the 200kg vacuum furnace to smelt vacuum degree 10
-3～10
-4The mmHg post, smelting process is identical with production trade mark 1J34.
(2) raw material:
Metal 1# nickel, metallic cobalt, metal M o, Armco iron (Taiyuan Railway Bureau), graphitic carbon, silicon metal, remelting manganese
(3) become to be dispensed into and analysis result: (annotate: heat (batch) number is D as following table
9-1474)
Elements C Si Mn P S Mo
Allocate weight (kg) 0.047 0.319 0.682 // 5.061 into
Analyze composition (%) 0.02 0.16 0.38 0.005 0.006 3.28
Ni Fe Co
54.194 51.429 46.387
34.26 / 29.29
B, forge:
Steel ingot Forging Technology after stripping off the skin is:
Go into stove less than 700 ℃, heat up with stove, be heated to 1250 ℃ ± 10 after, be incubated and open forging after 1.5 hours, through three fire forge into 40 ±
3* 200
+ 5* 500 steel billet, its type of cooling are air cooling, and forging stock carries out carrying out hot rolling after the big face finishing, the heavy 105Kg of forging stock.
C, hot rolling
Hot-rolled heating technology is: heat up with stove, be heated to 1240 ℃ of insulations open rolling in 30 minutes, hot rolling specification 4 * 200mm.
D, cold-rolling process:
The cogging deflection is controlled at 50～60%, and the final deformation amount control is about 80%: its process route is:
4.0mm → loose → pickling → welding → cogging first time 1.8mm → annealing (1000 ℃ of speed 0.5m/ of temperature branch) → cogging to 0.8 → annealing second time (1000 ℃ of speed 1m/ of temperature branch) → side cut → the three cogging 0.25mm → (1000 ℃ of speed 1.5m/ of temperature branch) → cold rolling 0.05 * 200mm of finished product for the third time anneals.
E, the manufacturing of iron core:
1. steel band cuts into the width of specification, through clean, deburring, after carry out the MgO coating and be wound into given size.For example φ 16/20 * 10 * 0.05(annotates: this specification is that the contract number of doing to 06-12 is C83-06Z-18)
2. iron core heat treatment
Heat treatment is to carry out in hydrogen furnace, and Technology for Heating Processing is: be warming up to 1100 ℃ of insulation 100 ℃/speed at one hour rating coolings after 2 hours with stove, reducing to 700 ℃ of post-tensionings, to go into water jacket cold.Then, doing transverse magnetic field handles: be warming up to 650 ℃ with stove and add the magnetic field insulation and be cooled to come out of the stove below 250 ℃ with 20 ℃/speed at one hour rating after 2 hours and remove magnetic field.Magnetic field intensity H=320A/cm
3 magnetic levels: see the following form
Sample number μ
1μ
3μ
5μ
8μ
10α % Hc
D
9-1474-1 1400 1470 1440 1350 1330 10.5 0.295
2 1300 1430 1360 1330 1300 10.0 0.27
3 1300 1430 1360 1310 1280 9.2 0.31
Br Bs μe
1μe
3μe
5μe
8
500 15000 1410 1270 1250 1380
400 15100 1310 1240 1210 1330
400 15000 1330 1220 1200 1310
(annotate: μ
1μ
3μ
5μ
8μ
10Hc Br Bs is the direct current magnetic parameter, and α % Wei Heng is qualitative, μ e
1～μ e
8Be the AC magnetism parameter)
Claims (3)
1, a kind of manufacture method of constant magnetic core, the composition of iron core (weight %) is 33.5～35.5% nickel, 28.5～30.5% cobalt, 2.8～3.5% molybdenum, surplus is an iron, adopt vacuum induction furnace smelting, hot working, cold working, shearing and heat treatment, it is characterized in that cold rolling final drafts is 70～85%, heat treatment adds the transverse magnetic field processing after comprising high annealing again.
2, iron core manufacture method according to claim 1; it is characterized in that high-temperature heat treatment must be with vacuum or hydrogen shield; 1000 ℃～1150 ℃ of annealing temperatures; be incubated and be cooled to 600～700 ℃ with 100 ℃/speed at one hour rating after 2～4 hours; cooling (it is cold to draw in water jacket) is come out of the stove fast then, carries out transverse magnetic field again and handles.
3, iron core manufacture method according to claim 2, it is characterized in that it is to be warming up to 600 ℃～700 ℃ with stove to add magnetic field that transverse magnetic field is handled, be incubated 1～2 hour, be cooled to below 300 ℃ with 20 ℃ speed per hour then, magnetic field intensity is 320～480A/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100770 CN1008570B (en) | 1985-04-01 | 1985-04-01 | Process for manufacturing magnetic core with constant permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100770 CN1008570B (en) | 1985-04-01 | 1985-04-01 | Process for manufacturing magnetic core with constant permeability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100770A CN85100770A (en) | 1986-08-27 |
| CN1008570B true CN1008570B (en) | 1990-06-27 |
Family
ID=4791419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100770 Expired CN1008570B (en) | 1985-04-01 | 1985-04-01 | Process for manufacturing magnetic core with constant permeability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008570B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151133B (en) * | 2013-03-18 | 2015-05-06 | 合肥工业大学 | Preparation technology of high-performance amorphous nickel-based anti-theft iron core |
| CN103667673B (en) * | 2013-12-06 | 2016-07-06 | 青岛云路先进材料技术有限公司 | A kind of cooling treatment method of amorphous powder core |
| CN103658642B (en) * | 2013-12-06 | 2016-05-11 | 青岛云路先进材料技术有限公司 | A kind of heat treatment method of amorphous powder core |
-
1985
- 1985-04-01 CN CN 85100770 patent/CN1008570B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100770A (en) | 1986-08-27 |
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