CN1971781B - Preparing method of block amorphous ring type magnetic core - Google Patents
Preparing method of block amorphous ring type magnetic core Download PDFInfo
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- CN1971781B CN1971781B CN2006101142787A CN200610114278A CN1971781B CN 1971781 B CN1971781 B CN 1971781B CN 2006101142787 A CN2006101142787 A CN 2006101142787A CN 200610114278 A CN200610114278 A CN 200610114278A CN 1971781 B CN1971781 B CN 1971781B
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Abstract
This invention relates to block non-crystal magnetic core process method by use of copper module forging, which comprises the following steps: matching formula as the proportion by use of vacuum furnace for metalizing; then putting the parent alloy into sense furnace for melting to spray into copper module through copper forging to get non-crystal alloy ring block; by use of this invention magnetic core, it directly shapes by forging with good surface property through simple process.
Description
Technical field
The present invention relates to a kind of preparation method who is mainly used in the block amorphous alloy ring type magnetic core of miniature transformer, inductance etc.
Background technology
Miniature transformer or inductance etc. require magnetic material saturation induction density Bs height usually, and magnetic permeability μ value is high, and iron loss P value is low, and magnetostriction coefficient λ is low, thereby make that the Bs value of work is high as far as possible, the power factor height, energy consumption is low, efficient is high and reduce noise etc.Traditionally, silicon steel is the most general magnetic material that is applied to this respect.But, after amorphous alloy material is developed research, because its saturation induction density is near silicon steel, and loss is significantly less than silicon steel, exciting curent is no more than 10 times of normal value when 110% output voltage, and exciting curent is not more than 3% of fully loaded output current, and long-term aging performance parameter changes little, with low cost, make non-crystaline amorphous metal present very big advantage.Up to now, the replacement that the part non-crystaline amorphous metal is successful silicon steel, obtained commercial applications and obtained huge economic benefit.
At present, the non-crystaline amorphous metal of extensive use all is to throw away band with single-roller method or double roller therapy, twines circle, is processed into iron core.With traditional silicon steel ratio, though do not need cold bundle, thus a lot of procedures reduced, have very big advantage, but also have certain problem, as the very thin thickness of band, having only tens microns, is 1/10th of silicon steel sheet, thereby has influenced the occupation efficiency of transformer core; On the other hand, the strip face quality is not easy control, goes wrong to be difficult for processing, improves, and causes the work magnetic property to be affected.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of method for preparing the block amorphous alloy ring type magnetic core is provided, adopt the magnetic core of this method preparation, direct casting, surface property is good, can use through simple processing, and can superpose according to demand.
Technical solution of the present invention: the preparation method of block amorphous ring type magnetic core, it is characterized in that: adopt copper mold casting method, the raw material that will prepare in proportion at first, use the vacuum furnace smelting nut alloy, then foundry alloy is placed the induction furnace of quick solidification apparatus to melt, by the copper mold casting, be injected in the copper mold, directly obtain the ring-like block of amorphous alloy.
The ingredient requirement that adopts should have simultaneously preferably by its prepared non-crystaline amorphous metal that forms that non-crystaline amorphous metal forms ability, satisfy the magnetic preferably and the certain toughness of service condition, thereby guarantee to form complete toroidal core.Can select by application number is that 200610112811.6 disclosed amorphous alloy component materials or other disclosed amorphous formation abilities prepare raw material greater than soft magnetic iron-based or cobalt base amorphous alloy composition 1 millimeter, that have plastic deformation ability.According to the atomic percent of used alloying component, calculate the corresponding percentage by weight of each element, take by weighing each element, batching, melting, preparation raw material.
The loop configuration that the copper mold structure that is adopted is made of outer shroud D, interior ring d and ring thickness h, the ring heart should be D/2+10mm apart from the copper mold upper surface.
The present invention's advantage compared with prior art is: the present invention directly casts the ring-like sample that becomes desired thickness and size with non-crystaline amorphous metal, non-crystaline amorphous metal is superposeed as silicon steel sheet, and don't reduce other performance standards.Like this, solve the amorphous ribbon thickness problem on the one hand, improve the occupation efficiency of transformer core, on the other hand, the amorphous surfaces defective of casting is few, even there is blemish, also can process, can not influence the performance of whole magnetic core, therefore non-crystaline amorphous metal will obtain to use widely, and preparation process condition of the present invention is simple, implements under the industrial production condition easily, can be widely used in fields such as miniature transformer, inductance.
Description of drawings
Fig. 1 is a copper mold structural representation of the present invention, and wherein Fig. 1 a is a front view, and Fig. 1 b is a vertical view, and Fig. 1 c is an a portion enlarged diagram;
The non-crystaline amorphous metal Fe that Fig. 2 adopts for the present invention
75Mo
5P
10C
7.5B
2.5(atomic percent) is used for the annular block amorphous surfaces pattern photo and the corresponding XRD diffraction data schematic diagram of soft magnetism test.
Embodiment
Preparation method of the present invention is specific as follows:
(1) takes by weighing each element
Calculating each associated element wt by required atom number takes by weighing;
(2) melting system foundry alloy
With step (1) claim needed raw material put into vacuum high-frequency induction smelting furnace, regulate suction to 1～8 * 10
-3Pa charges into argon shield gas, and argon pressure is 0.01～0.08MPa; Regulate 1000～1600 ℃ of electric current 15～25A, temperature sensors; Take out foundry alloy with the stove cooling behind smelting time 5～10min;
(3) make annular block amorphous alloy
The described foundry alloy that step (2) is made is put into the induction furnace of quick solidification apparatus, regulates suction to 1～8 * 10
-3Pa charges into argon shield gas, and argon pressure is 0.01～0.08MPa; Regulate 900～1100 ℃ of electric current 2～10A, temperature sensors; Spurt in the copper mold behind smelting time 2～5min, and promptly make annular block amorphous alloy with the copper mold cooling.
Below in conjunction with specific embodiment, preparation method of the present invention is described in detail.
Present embodiment chooses that to have amorphous formation ability be cut off diameter 2mm bar, has obvious compressive deformation, better the Fe of soft magnetism
75Mo
5P
10C
7.5B
2.5(atomic percent) alloy is raw material.The annular copper mold be two parts zoarium, the ring-like outer diameter D=13mm that is of a size of, inner diameter d=10mm, thickness h=1.2mm, the ring heart apart from the about 16.5mm of copper mold upper surface about, detailed structure is as shown in Figure 1.Under the conditions permit situation, can be designed to have different size according to demand, the ring mould of different size, wherein, D is the external diameter of ring, and d is the ring internal diameter, h is the thickness of ring, the ring heart should be the D/2+10 millimeter apart from the copper mold upper surface, and the too high cooling rate that can influence metal liquid causes ring can not form amorphous; Cross the low metal liquid that can make and solidified in the past being full of annular space, thereby can not form complete ring.Mark a is annular top one little groove among Fig. 1, and is identical with ring-like thickness, and its function discharges certain thermal stress for one side when ring solidifies, thereby anti-stop ring ruptures because of thermal stress, can be beneficial to the ring demoulding on the other hand, thereby reduces the damage to ring and mould.
Take by weighing each element by needed atomic percent, present embodiment is that 75% Fe, 5% Mo, 10% P, 7.5%C and 2.5%B prepare raw material, beginning melting system Fe
75Mo
5P
10C
7.5B
2.5Foundry alloy; With above-mentioned claim needed raw material put into vacuum high-frequency induction smelting furnace, regulate suction to 5 * 10
-3Pa charges into argon shield gas, and argon pressure is 0.05MPa; Regulate 1200 ℃ of electric current 20A, temperature sensors; Take out Fe with the stove cooling behind the smelting time 10min
75Mo
5P
10C
7.5B
2.5Foundry alloy; With the above-mentioned described Fe that makes
75Mo
5P
10C
7.5B
2.5Foundry alloy is put into the induction furnace of quick solidification apparatus, regulates suction to 5 * 10
-3Pa charges into argon shield gas, and argon pressure is 0.05MPa; Regulate 1000 ℃ of electric current 5A, temperature sensors; Spurt in the copper mold behind the smelting time 5min, and promptly make Fe with the copper mold cooling
75Mo
5P
10C
7.5B
2.5Annular block amorphous alloy block cuts away handle and unnecessary projection, the pattern of gained amorphous ring and x x ray diffration pattern x thereof as shown in Figure 2, the visible ring-like sample of gained is a non crystalline structure.Also can simply process and thereby rational heat treatment is improved its performance for prepared amorphous ring.For example, carry out the soft magnet performance test then to the heat treatment of annealing of the foregoing description non-crystaline amorphous metal ring.The test result of cast samples and annealed heat treated sample is referring to table 1, and this non-crystaline amorphous metal ring soft magnet performance after Overheating Treatment obviously improves as can be seen.
The magnetic of table 1 embodiment non-crystaline amorphous metal
Among Fig. 2, scale is in order to prove that the prepared amorphous formation ability of this composition that employing is write above is 2mm (by that bar size as seen), and by its ring-like specimen size that is prepared into.The XRD diffraction pattern on next door is non crystalline structure (the diffuse scattering peak that has only a steamed bun shape on each figure does not have tangible, sharp-pointed crystal peak) for bar shown in proving and loop type material.
Claims (5)
1. the preparation method of block amorphous ring type magnetic core, it is characterized in that: adopt copper mold casting method, the raw material that will prepare in proportion at first, use the vacuum furnace smelting nut alloy, then foundry alloy is placed the induction furnace of quick solidification apparatus to melt, by the copper mold casting, be injected in the copper mold, directly obtain the ring-like block of amorphous alloy; Described raw material is the raw material of amorphous formation ability greater than soft magnetic iron-based or cobalt base amorphous alloy composition preparation 1 millimeter, that have plastic deformation ability.
2. the preparation method of block amorphous ring type magnetic core according to claim 1 is characterized in that: the loop configuration that the described copper mold structure that adopts is made of outer shroud D, interior ring d and ring thickness h, the ring heart should be D/2+10mm apart from the copper mold upper surface.
3. the preparation method of block amorphous ring type magnetic core according to claim 2 is characterized in that: a little groove above described annular copper mold is identical with ring-like thickness.
4. the preparation method of block amorphous ring type magnetic core according to claim 1, it is characterized in that: described employing vacuum furnace smelting nut alloy is that foundry alloy is put into vacuum high-frequency induction smelting furnace, regulates suction to 1～8 * 10
-3, charging into argon shield gas, argon pressure is 0.01～0.08MPa; Regulate 1000～1600 ℃ of electric current 15～25A, temperature sensors; Take out foundry alloy with the stove cooling behind smelting time 5～10min.
5. the preparation method of block amorphous ring type magnetic core according to claim 1, it is characterized in that: described foundry alloy is placed the induction furnace fusing of quick solidification apparatus is the induction furnace of foundry alloy being put into quick solidification apparatus, regulates suction to 1～8 * 10
-3Pa charges into argon shield gas, and argon pressure is 0.01～0.08MPa; Regulate 900～1100 ℃ of electric current 2～10A, temperature sensors; Spurt in the copper mold behind smelting time 2～5min, and promptly make annular block amorphous alloy with the copper mold cooling.
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| CN2006101142787A CN1971781B (en) | 2006-11-03 | 2006-11-03 | Preparing method of block amorphous ring type magnetic core |
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| CN2006101142787A CN1971781B (en) | 2006-11-03 | 2006-11-03 | Preparing method of block amorphous ring type magnetic core |
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| CN1971781B true CN1971781B (en) | 2010-12-22 |
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| CN102789876B (en) * | 2012-07-30 | 2015-05-06 | 昆山达功电子有限公司 | Chip inductor |
| CN103632836B (en) * | 2013-12-04 | 2015-11-04 | 中国矿业大学 | The preparation method of Metglas core |
| CN104200986A (en) * | 2014-09-15 | 2014-12-10 | 安徽蓝海机电设备有限公司 | Transformer core and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036084A1 (en) * | 2000-03-21 | 2001-11-01 | Alps Electric Co., Ltd. | Low-loss magnetic powder core, and switching power supply, active filter, filter, and amplifying device using the same |
| CN2535907Y (en) * | 2002-02-27 | 2003-02-12 | 上海长江电器设备集团有限公司 | Iron-base nano crystal high-frequency magnetic core |
| CN1505822A (en) * | 2001-07-13 | 2004-06-16 | 真空融化两合公司 | Method for producing nanocrystalline magnet cores, and device for carrying out said method |
| EP1282903B1 (en) * | 2000-05-19 | 2004-07-28 | Vacuumschmelze GmbH & Co. KG | Inductive component and method for the production thereof |
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2006
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036084A1 (en) * | 2000-03-21 | 2001-11-01 | Alps Electric Co., Ltd. | Low-loss magnetic powder core, and switching power supply, active filter, filter, and amplifying device using the same |
| EP1282903B1 (en) * | 2000-05-19 | 2004-07-28 | Vacuumschmelze GmbH & Co. KG | Inductive component and method for the production thereof |
| CN1505822A (en) * | 2001-07-13 | 2004-06-16 | 真空融化两合公司 | Method for producing nanocrystalline magnet cores, and device for carrying out said method |
| CN2535907Y (en) * | 2002-02-27 | 2003-02-12 | 上海长江电器设备集团有限公司 | Iron-base nano crystal high-frequency magnetic core |
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