CN1105775A - Method for manufacturing amorphous alloy thin band rectangle iron core - Google Patents
Method for manufacturing amorphous alloy thin band rectangle iron core Download PDFInfo
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- CN1105775A CN1105775A CN 94115585 CN94115585A CN1105775A CN 1105775 A CN1105775 A CN 1105775A CN 94115585 CN94115585 CN 94115585 CN 94115585 A CN94115585 A CN 94115585A CN 1105775 A CN1105775 A CN 1105775A
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Abstract
The utility model discloses a manufacturing method of an amorphous soft magnetic alloy ribbon high power transformer rectangular iron core. The method is a manufacturing process of the amorphous ribbon butt-jointing rectangular iron core which has a high magnetic property, a simple process and the batch production convenience. The main process is that the amorphous alloy ribbon is cut and grouped according to the calculation length, each ribbon group is butt-jointed to constitute an annular iron core, the annular iron core is pressed in two mutual perpendicular radial directions and a rectangular iron core with four radian corners is formed after annealing.
Description
The invention belongs to a kind of manufacture method of transformer core, mainly is the manufacture method of the high-power transformer rectangular core that is wound into by amorphous soft magnetic ribbon, and this method mainly comprises uncoiling, sub-cut, assembling, moulding and annealing.
Because amorphous soft magnetic ribbon hardness height, characteristics such as galvanizing embrittlement generally all are made into ring-shaped core and are used for transformer, can obtain the optimum magnetic energy like this.But for the high-power transformer greater than 500VA, because the number of turn of winding is a lot, but winding is to be formed by the hard copper pipe coiling that the hollow water flowing is cooled off sometimes, and ring-shaped core is just inapplicable.The C core that usually adopts the rectangle cutting to form, convenient so that winding inserts.But rectangular core is before cutting, must carry out dipping lacquer solidifies, make each layer amorphous thin ribbon relative fixed of coiling, when cutting, do not loose off, and then cutting forms C shape, such dipping lacquer and cutting two procedures all can bring magnetic unshakable in one's determination significantly to descend, and it seems that the permeability of the non-crystaline amorphous metal C core that general this method makes has only 2000～3000Gs/Oe, be quite low.
United states, japan and other countries all has the report that adopts the strip lap joint process to make the amorphous transformer iron core in recent years for this reason, Japanese patent laid-open 4-223313, decreased performance unshakable in one's determination for fear of paint-dipping process causes overlaps strip at the minor face place of rectangular core, can take apart again winding is packed into.But this bridging method makes near minor face other three limits sectional areas of sectional area ratio iron core interface of rectangular core increase a lot.And in making operating process unshakable in one's determination, need twice combination of strip, complex process.Te Kaiping 4-302110 also discloses a kind of method of making rectangle amorphous thin ribbon iron core that overlaps, though area of core section did not increase near this method had guaranteed the overlap joint interface, but because each layer overlap joint order and the length requirement that staggers are loaded down with trivial details, manufacture craft unshakable in one's determination is quite complicated.
The objective of the invention is weak point for fear of above-mentioned prior art, a kind of technology that the high-power transformer rectangular core is made in amorphous alloy ribbon grouping butt joint is provided, this technology has been avoided the long-pending increase of interface core section, guaranteed the high level of magnetic, and simple for process being convenient to produced in batches.
The purpose that the present invention makes high-power amorphous thin ribbon rectangle transformer core can reach by following measure, at first with raw material amorphous soft magnetic alloy (comprising ultramicro-crystal alloy) thin coiled stock uncoiling, if the thickness of this strip is generally its thickness 0.02～0.04mm) of t(, the strip that with this thickness is t is the 1st by different length sub-cuts, 2,3 ... the W group, every group of N piece of strip section by equal length formed, the group that amounts to sub-cut is counted W and is satisfied T=WNt/p, wherein [T] is the effectively folded thick of rectangular core section, p is the lamination coefficient of strip in rectangular core, and the length of respectively organizing strip is that rectangular core periphery length is as the criterion with the 1st group, and 2 π Nt/p in proper order successively decrease.Then press rectangular core periphery length and make a ring-shaped outer layer sheath [3] with silicon steel sheet, press a Zhou Changdu making annular internal layer sheath [4] in the rectangular core again, then above-mentioned branch is cut the 1st, 2,3 ... W group strip group is docked by the length mode of successively decreasing and is assembled in the outer protective sleeve, till W has assembled, the silicon steel sheet internal layer sheath of packing at last, just form one by W group strip closed assembly, butt joint ring-shaped core with W mating interface, and count the length that the 1st interface and the 2nd interface staggers at ring-shaped core garden Zhou Fangxiang from the ring-shaped core skin should be less than the length of finished product rectangular core periphery square limit straight portion.Count the length of the 1st interface and the 2nd interface all minor face straight portion in length that garden Zhou Fangxiang staggers should be less than the finished product rectangular core from the ring-shaped core internal layer.The length that middle each interface and adjacent interface stagger is got it and is reduced to carry out the transition to the length that interior layer interface staggers gradually by the outer layer interface length that staggers.The butt joint ring-shaped core that next step will form again is from two mutually perpendicular radially exert pressure [P]; forming four turnings has the rectangular core of certain radian; at last with this rectangular core under protective atmosphere in 350～550 ℃; be incubated 1 hour and carry out annealing in process, just finished the manufacturing of the high-power amorphous soft magnetic ribbon rectangular core of this invention.
The present invention can realize by following measure, the thickness of general domestic and international existing amorphous soft magnetic ribbon (comprising the super-microcrystalline soft magnetic alloy strip) is all in the scope of 0.02～0.04mm, as far as possible little in order to guarantee mating interface place leakage field, and manufacture craft unshakable in one's determination is simple, experimental results show that strip piece number N=1～the 6th of the strip group that each branch cuts, and is desirable.In addition in order further to simplify manufacture craft unshakable in one's determination, after particularly rectangular core annealing is finished, need winding is inserted iron core, then iron core must be opened at interface, iron core is installed behind the insertion winding again, interface just can not be too many so, otherwise too complicated in the operation, guaranteeing that the interface leakage field can not surpass on the basis that requires, and reduces the number of interface as far as possible for this reason, so can organize adjacent several merging in the strip group to the W that branch cuts, form the strip combination.
The manufacture method of the high-power amorphous alloy thin band rectangle iron core of the present invention, owing to adopt amorphous alloy ribbon grouping butt joint, and the length of respectively organizing strip is as the criterion with rectangular core periphery length, 2 π Nt/p in proper order successively decrease, make finished product interface basal area unshakable in one's determination not increase, and dock very tightly that leakage field is very little, guaranteed the high level of magnetic, this is that prior art did not occur.Owing to the intrinsic high resiliency of amorphous alloy ribbon, when successively the strip that divides into groups being assembled into ring-type silicon steel sheath, the strip group all has bigger exceptionally straight tension force, has guaranteed the high fill-factor of amorphous thin ribbon iron core simultaneously.Have four turnings of finished product rectangular core to be the shape of certain radian again, both guaranteed the density of corner, the stress of also having avoided sharp corner to produce is concentrated and is caused the decline of magnetic unshakable in one's determination.
Being described as follows of accompanying drawing drawing:
Fig. 1. the structural representation of the ring-shaped core that the amorphous alloy ribbon group forms in the inventive method.
Fig. 2. the schematic diagram of the inventive method amorphous alloy ribbon finished product rectangle butt joint core construction.
The present invention is described in further detail below in conjunction with embodiment:
Embodiment 1.
Select Fe for use
78B
13Si
9The amorphous soft magnetic ribbon of (atom %) composition, bandwidth 20mm tape thickness t=0.030mm adopts the present invention that this strip is pressed the different length sub-cut.Getting N=1, to get the laminate patch coefficient be 0.6, then poor according to two adjacent strip length during sub-cut
(2πNt)/(p) ＝ (2×π×1×0.03)/0.6 ＝0.3（mm）
Mode is successively decreased, by outer perimeter 342mm unshakable in one's determination, and interior girth 295mm, folded thick T=15mm
W＝ (Tp)/(Nt) ＝ (15×0.6)/(1×0.03) ＝300
For reducing the interface number, merge butt joint with per 10 and form an interface, number of ports then unshakable in one's determination
＝ (W)/10 ＝ 300/10 ＝30。
With strip by the length mode of successively decreasing put into Si steel loop shape sheath dock form a ring-shaped core after, again in two mutual vertical direction pressurizations, form rectangular core, after 380 ℃ of annealing, open interface, insert behind the coil and to restore interface is closed, survey its part static state and medium-high frequency performance and list in table 1, list file names with 3 rectangular cores (and treatment temperature is identical) comparative example that the strip that forms with batch spray is made in the table.1, wound core; 2, coiling back dipping lacquer iron core; 3, cutting C core and example of the present invention are done contrast behind the dipping lacquer.These group data show, the iron core that the present invention makes is lower than the wound core except that saturated magnetic strength, other performances are all close with the latter, even the iron core that is better than the latter and is better than greatly cutting behind dipping lacquer and the dipping lacquer, prove adopt this method to make power big (＞500VA) amorphous or ultramicro-crystal alloy transformer core has obvious superiority.
Table 1
The manufacture method of amorphous thin ribbon rectangular core of the present invention compared with the prior art its advantage is:
1, owing to adopt amorphous alloy ribbon sub-cut grouping docking to form the mating interface iron core, and respectively organize strip length and be as the criterion with rectangular core periphery length, the order 2 π Nt/p that successively decrease, make finished product interface unshakable in one's determination near sectional area do not increase. Simultaneously docking is tight, and leakage field is very little, has guaranteed the high level of magnetic unshakable in one's determination.
2, because in advance with strip grouping or the combination of formation strip, the row docking forms iron core again, so that manufacture craft unshakable in one's determination is simplified, easy operating is convenient in batches specification production of tissue.
Claims (3)
1, a kind of high-power amorphous soft magnetic ribbon rectangular core manufacture method comprising uncoiling, sub-cut, assembling, moulding and annealing, is characterized in that:
(1) with thickness be the amorphous soft-magnetic alloy roll coil of strip uncoiling of t after, press rectangular core periphery length and shear N piece of strip section, be the 1st group [1], then shear the 2nd, 3 ... until W group [2], every group all is N piece of strip section of equal length, organize number W altogether and satisfy T=WNt/p, wherein [T] is the effectively folded thick of rectangular core section, and p is the lamination coefficient of strip in rectangular core, each length of organizing strip is that rectangular core periphery length is as the criterion with the 1st group, and 2 π Nt/p in proper order successively decrease;
(2) press rectangular core periphery length with silicon steel sheet and make a ring-shaped outer layer sheath [3], press a Zhou Changdu making annular internal layer sheath [4] in the rectangular core again, by the length order of successively decreasing sub-cut is with 1 then, 2,3 ... W group strip is assembled in the outer protective sleeve [3] successively, till W has assembled, the internal layer sheath [4] of packing at last, form one by W group strip closed assembly, butt joint ring-shaped core with W mating interface, and counting the length that the 1st interface and the 2nd interface staggers at the ring-shaped core circumferencial direction from the ring-shaped core skin should be less than the length [e] of finished product rectangular core periphery minor face straight portion, and count from the internal layer of ring-shaped core, the length that the 1st interface and the 2nd interface stagger in a circumferential direction should be less than the length [f] of all minor face straight portion in the finished product rectangular core, and the length that middle each interface and adjacent interface stagger is got it and reduced to carry out the transition to the length that interior layer interface staggers gradually by the outer layer interface length that staggers;
(3) above-mentioned annular is docked the amorphous thin ribbon iron core at two orthogonal radially exert pressure [P], form the rectangular core that there is certain radian at four turnings;
(4) with the rectangular core that forms under protective atmosphere, 350～550 ℃, be incubated 1 hour and carry out annealing in process;
2, the manufacture method of rectangular core according to claim 1 is characterized in that piece number N=1～6 of every group of strip section;
3, the manufacture method of rectangular core according to claim 1 is assembled into outer protective sleeve [3] before W being organized strip, W can be organized that adjacent several combinations also form the strip combination in the strip group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94115585A CN1038209C (en) | 1994-09-06 | 1994-09-06 | Method for manufacturing amorphous alloy thin band rectangle iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94115585A CN1038209C (en) | 1994-09-06 | 1994-09-06 | Method for manufacturing amorphous alloy thin band rectangle iron core |
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| Publication Number | Publication Date |
|---|---|
| CN1105775A true CN1105775A (en) | 1995-07-26 |
| CN1038209C CN1038209C (en) | 1998-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94115585A Expired - Fee Related CN1038209C (en) | 1994-09-06 | 1994-09-06 | Method for manufacturing amorphous alloy thin band rectangle iron core |
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| CN (1) | CN1038209C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360768A (en) * | 2011-11-04 | 2012-02-22 | 安泰科技股份有限公司 | Amorphous iron core, manufacturing method thereof and transformer with high performance, low noise and low cost |
| CN103531334A (en) * | 2013-11-02 | 2014-01-22 | 国家电网公司 | Silicon steel sheet surrounding type amorphous alloy iron cores |
| CN104616881A (en) * | 2014-12-30 | 2015-05-13 | 安泰南瑞非晶科技有限责任公司 | Iron-based amorphous alloy core for distribution transformer and manufacturing method thereof |
| CN105374542A (en) * | 2014-08-22 | 2016-03-02 | 株式会社日立产机系统 | Manufacturing method of amorphous iron core |
| CN110136955A (en) * | 2019-06-12 | 2019-08-16 | 南京安盛电子有限公司 | The production technology of power frequency open type transformer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2927366A (en) * | 1956-05-21 | 1960-03-08 | R T & E Corp | Method of making magnetic cores |
| US4709471A (en) * | 1986-08-15 | 1987-12-01 | Westinghouse Electric Corp. | Method of making a magnetic core |
-
1994
- 1994-09-06 CN CN94115585A patent/CN1038209C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360768A (en) * | 2011-11-04 | 2012-02-22 | 安泰科技股份有限公司 | Amorphous iron core, manufacturing method thereof and transformer with high performance, low noise and low cost |
| CN102360768B (en) * | 2011-11-04 | 2014-06-04 | 安泰科技股份有限公司 | Amorphous iron core, manufacturing method thereof and transformer |
| CN103531334A (en) * | 2013-11-02 | 2014-01-22 | 国家电网公司 | Silicon steel sheet surrounding type amorphous alloy iron cores |
| CN105374542A (en) * | 2014-08-22 | 2016-03-02 | 株式会社日立产机系统 | Manufacturing method of amorphous iron core |
| CN105374542B (en) * | 2014-08-22 | 2017-07-11 | 株式会社日立产机系统 | The manufacture method of amorphous iron core |
| CN104616881A (en) * | 2014-12-30 | 2015-05-13 | 安泰南瑞非晶科技有限责任公司 | Iron-based amorphous alloy core for distribution transformer and manufacturing method thereof |
| CN110136955A (en) * | 2019-06-12 | 2019-08-16 | 南京安盛电子有限公司 | The production technology of power frequency open type transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038209C (en) | 1998-04-29 |
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Free format text: CORRECT: PATENTEE; FROM: GENERAL RESEARCH INST. OF IRON AND STEEL, MINISTRY OF METALLURGICAL INDUSTRY TO: ANTAI SCIENCE AND TECHNOLOGY CO., LTD. |
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