CN102941326A - Preparation method of iron-based nano-crystalline strip with regular lines - Google Patents
Preparation method of iron-based nano-crystalline strip with regular lines Download PDFInfo
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- CN102941326A CN102941326A CN2012104957304A CN201210495730A CN102941326A CN 102941326 A CN102941326 A CN 102941326A CN 2012104957304 A CN2012104957304 A CN 2012104957304A CN 201210495730 A CN201210495730 A CN 201210495730A CN 102941326 A CN102941326 A CN 102941326A
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Abstract
The invention discloses a preparation method of an iron-based nano-crystalline strip with regular lines, and belongs to the technical field of iron-based nano-crystalline strips. Based on the process for conventionally preparing the iron-based nano-crystalline strip by the aid of a single-roller quick-quenching flat flow splat cooling method, the iron-based nano-crystalline strip with the regular lines is prepared by adjusting and controlling technological parameters of a single-roller quick-quenching flat flow splat cooling device and is applied to a zero sequence current transformer of an electric leakage protection device, the technical index of the electric leakage protection device can be improved, and sensitivity and working stability of the zero sequence current transformer made of the strip are improved. The nano-crystalline strip with the regular lines is manufactured by adjusting and quantitatively controlling the technological parameters such as the temperature of molten alloy steel, the liquid level of molten steel in a nozzle ladle, the size of a nozzle seam and the rotation speed of a cooling roller in terms of manufacturing method.
Description
Technical field
The invention belongs to iron based nano crystal band technical field, a kind of preparation method of regular lines iron based nano crystal band particularly is provided, be applied to the zero sequence current mutual inductor iron core.
Background technology
The amorphous soft-magnetic alloy band adopts dull and stereotyped flow liquid attitude chilling technique; the molten alloy molten steel is cooled off rapidly with the cooling velocity of per second 1,000,000 degree; make thickness and be 20 ~ 40 microns amorphous band; its microstructure has the unordered glassy state feature of long-range; be different from traditional metal alloy compositions fully; high intensity is arranged; hardness; corrosion resistance; wearability; resistivity; electromechanical coupling factor; heat conductivity; surface-active and good toughness; has high saturated magnetic induction; high magnetic permeability; low-coercivity; low-loss; good frequency characteristic and temperature characterisitic; replace silicon steel; permalloy; ferrite; be widely used in transformer; transformer; reactor; inverter; Switching Power Supply; earth leakage protective device; inductor and sensor promote to realize miniaturization of electronic products; high frequency; high efficiency; environmental protection; energy-conservation.
Iron based nano crystal electric leakage band is applied to the earth leakage protective field, for the preparation of the core parts of earth leakage protective device---zero sequence current mutual inductor as wherein a kind of of amorphous soft-magnetic alloy band.
Earth leakage protective device mainly is to get an electric shock to protect when equipment generation leak current fault and to the person that fatal risk is arranged.Industry regulation safe voltage is 36V, and the let-go current behind the human electric shock is for exchanging 10mA, direct current 50mA.In case the electric leakage event occurs, zero sequence current mutual inductor detects leakage current and sends signal, and main switch forwards open position to by closing position after amplifying, thereby cuts off the electricity supply.
Forming the lines effect on the nanocrystalline strip surface is one of key factor that causes its macroscopical magnetic anisotropy, this lines effect is brought the variation of grain microstructure, so that the crystal grain arrangement is more regular, causes reducing of magnetic anisotropy energy, thereby improved its magnetic property.There is lines iron based nano crystal band can improve application performance by this method is prepared, improves the sensitivity by its zero sequence current mutual inductor that makes.In addition, textured band increases in toughness, can improve the production efficiency that is prepared into each link of making zero sequence current mutual inductance from band.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of regular lines iron based nano crystal band, having the technique basis now by the adjustment to technological parameter, make the iron based nano crystal band of the regular lines of surface band, and then affect the magnetic history of material, to improve the action current of zero sequence current mutual inductor, also improve simultaneously the toughness of material, improved production efficiency.
The present invention is take the conventional iron based nano crystal band technique for preparing of the method for the dull and stereotyped stream of single roller rapid quenching chilling as the basis, adjust and the dull and stereotyped technological parameter that flows quenching apparatus of control single roller rapid quenching, be prepared with the iron based nano crystal band of regular lines, improve its application performance (action current) and improve sensitivity and the job stability plant thus the zero sequence current mutual inductor that band makes., in adjustment and the quantitatively control of these several the technological parameters of rotating speed of the size of manufacture method by molten steel liquid level, nozzle mouth seam in to the temperature of molten alloy molten steel, nozzle bag, chill roll, make the nanocrystalline strip of regular lines.The technical parameter of concrete technology step and control is as follows:
(1) temperature of molten alloy molten steel is controlled at 1300-1400 ℃;
(2) nozzle Baogang liquid liquid level is controlled at 150mm-220mm;
(3) nozzle mouth seam size Control is at 0.4-1.0 mm;
(4) chill roll rotating speed (being casting speed) is controlled at 1200-1300 r/min;
(5) the nanocrystalline strip lines width that makes is 0.4-1.0mm;
(6) the nanocrystalline strip thickness that makes is 30 ± 2 μ m;
(7) make zero sequence current mutual inductor with the nanocrystalline strip that this preparation method was produced, use HT-35 iron core measuring instrument and ABX-6 magnet ring characteristic integrated tester to test.Can reach performance such as table 1:
Table 1
Description of drawings
Fig. 1 represents the dull and stereotyped stream of single roller rapid quenching emergency cooling process schematic diagram.
Fig. 2 represents the strip surface form that obtains under the common process.
Fig. 3 represents the surperficial regular lines band schematic diagram of patent of the present invention.
Fig. 4 represents the pictorial diagram of the surperficial regular lines band of patent of the present invention.
Fig. 5 represents embodiment 1 resulting strip surface form pictorial diagram.
Fig. 6 represents embodiment 2 resulting strip surface form pictorial diagram.
Fig. 7 represents embodiment 3 resulting strip surface form pictorial diagram.
Fig. 8 represents embodiment 4 resulting strip surface form pictorial diagram.
The zero sequence current mutual inductor iron core that Fig. 9 presentation surface has, the iron based nano crystal band of random lines is made is at the magnetic conductivity correlation curve of different magnetic field intensity.
The zero sequence current mutual inductor iron core millivolt output (under the 30mA) of the identical weight that Figure 10 presentation surface has, the iron based nano crystal band of random lines is made and zero sequence current mutual inductor action current to correlation curve.
The specific embodiment
Below in conjunction with accompanying drawing, art scheme and preferred version that the preparation method of regular lines iron based nano crystal electric leakage band is taked are described further.
Take the temperature of the method common process molten alloy molten steel of the dull and stereotyped stream of single roller rapid quenching chilling as 1300-1360 ℃, liquid liquid level 220 mm of nozzle Baogang, chill roll rotating speed (being casting speed)〉1100 r/min, nozzle mouth seam size＜1.0 mm make thickness of strip 30 ± 2 μ m.The band of producing gained under this technique is surperficial without lines as shown in Figure 2.Molten steel liquid level, the size of nozzle mouth seam, the rotating speed of chill roll in temperature by adjusting control molten alloy molten steel, the nozzle bag, there is the band of regular lines in preparation surface as shown in Figure 4.
Embodiment 1, and present embodiment provides when the molten alloy molten steel temperature and is controlled at 1380 ℃, and nozzle bag liquid level is controlled at 220mm, and the width of nozzle mouth seam is controlled at 0.8mm, and when the chill roll rotating speed was controlled at 1200 r/min, the situation that obtains lines was seen Fig. 5.
Embodiment 5, and present embodiment provides when the molten alloy molten steel temperature and is controlled at 1380 ℃, and nozzle bag liquid level is controlled at 160mm, and the width of nozzle mouth seam is controlled at 0.6mm, and when the chill roll rotating speed was controlled at 1230 r/min, the lines state that can obtain was seen Fig. 4.
Table 2
Can verify that from the data of table 2 regular lines iron based nano crystal strip product is in the superiority aspect the action current.Action current and millivolt corresponding relation of output (under the 30mA), referring to Figure 10, this corresponding relation reaction zone wood property energy uniformity, regular lines band is better than conventional band.
Claims (1)
1. the preparation method of a regular lines iron based nano crystal band is characterized in that, the technical parameter of concrete technology step and control is as follows:
(1) temperature of molten alloy molten steel is controlled at 1300-1400 ℃;
(2) nozzle Baogang liquid liquid level is controlled at 150mm-220mm;
(3) nozzle mouth seam size Control is at 0.4-1.0 mm;
(4) chill roll rotating speed (being casting speed) is controlled at 1200-1300 r/min;
(5) the nanocrystalline strip lines width that makes is 0.4-1.0mm;
(6) the nanocrystalline strip thickness that makes is 28-32 μ m;
(7) nanocrystalline strip of producing makes zero sequence current mutual inductor, uses HT-35 iron core measuring instrument and ABX-6 magnet ring characteristic integrated tester to test to reach performance as follows:
The band specification makes under zero sequence current mutual inductor iron core weight/g 1:1 30mA output mV and counts action current/mA
6.5mm 1.8 ≥0.8 ≤28
7.6mm 3.2 ≥1.4 ≤28
10mm 4 ≥2 ≤17。
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| CN2012104957304A CN102941326A (en) | 2012-11-28 | 2012-11-28 | Preparation method of iron-based nano-crystalline strip with regular lines |
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| CN2012104957304A CN102941326A (en) | 2012-11-28 | 2012-11-28 | Preparation method of iron-based nano-crystalline strip with regular lines |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6506268B1 (en) * | 1993-10-04 | 2003-01-14 | Nippon Steel Corporation | High toughness amorphous alloy strip and production thereof |
| CN101671797A (en) * | 2009-02-27 | 2010-03-17 | 东北大学 | High-phosphorous weather-proof steel cast-rolling thin strip with negative phosphorous segregation on surface and preparation method thereof |
| CN102234797A (en) * | 2011-06-20 | 2011-11-09 | 南昌大学 | Method for preparing phosphating film surface modified iron-based amorphous ribbon |
| CN102314985A (en) * | 2011-09-29 | 2012-01-11 | 安泰科技股份有限公司 | Iron-based amorphous-alloy broadband and manufacturing method thereof |
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2012
- 2012-11-28 CN CN2012104957304A patent/CN102941326A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6506268B1 (en) * | 1993-10-04 | 2003-01-14 | Nippon Steel Corporation | High toughness amorphous alloy strip and production thereof |
| CN101671797A (en) * | 2009-02-27 | 2010-03-17 | 东北大学 | High-phosphorous weather-proof steel cast-rolling thin strip with negative phosphorous segregation on surface and preparation method thereof |
| CN102234797A (en) * | 2011-06-20 | 2011-11-09 | 南昌大学 | Method for preparing phosphating film surface modified iron-based amorphous ribbon |
| CN102314985A (en) * | 2011-09-29 | 2012-01-11 | 安泰科技股份有限公司 | Iron-based amorphous-alloy broadband and manufacturing method thereof |
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Application publication date: 20130227 |