JPH04275410A - Heat treatment of magnetic core - Google Patents
Heat treatment of magnetic coreInfo
- Publication number
- JPH04275410A JPH04275410A JP3037644A JP3764491A JPH04275410A JP H04275410 A JPH04275410 A JP H04275410A JP 3037644 A JP3037644 A JP 3037644A JP 3764491 A JP3764491 A JP 3764491A JP H04275410 A JPH04275410 A JP H04275410A
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- temperature
- magnetic
- differential
- ribbon
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 230000035699 permeability Effects 0.000 claims abstract description 34
- 238000002425 crystallisation Methods 0.000 claims abstract description 30
- 230000008025 crystallization Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract 2
- 239000012298 atmosphere Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000005300 metallic glass Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000646 scanning calorimetry Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910017262 Mo—B Inorganic materials 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- 229910008458 Si—Cr Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000697 metglas Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、直流上の重複リップル
の平滑やノーマルモード用ノイズフィルターのコア、高
周波トランス及びアクティブフィルター用コア等に用い
られる恒透磁性の優れた磁心の製造方法に適用して有効
な技術に関する。[Industrial Application Field] The present invention is applicable to a method of manufacturing magnetic cores with excellent constant magnetic permeability used for smoothing overlapping ripples on DC, cores of normal mode noise filters, cores for high frequency transformers, active filters, etc. Regarding effective techniques.
【０００２】0002
【従来の技術】従来技術では、非晶質合金からなる金属
薄帯（磁性リボン）をスリット状に加工してこれを所定
回数だけ巻回し、これを熱処理（焼鈍）した後、エポキ
シ樹脂等の接着剤を含浸、固化させ、次に磁路の一部を
切断するギャップ（空隙）を設けて前記恒透磁性を実現
していた。また、その他にギャップを設けることなく熱
処理のみにより目標とする恒透磁性を得る手法が以前よ
り知られていた。[Prior Art] In the conventional technology, a metal ribbon (magnetic ribbon) made of an amorphous alloy is processed into a slit shape, wound a predetermined number of times, heat-treated (annealed), and then coated with epoxy resin, etc. The above-mentioned constant magnetic permeability was achieved by impregnating and solidifying an adhesive, and then providing a gap to cut a portion of the magnetic path. In addition, a method of obtaining the target constant magnetic permeability only by heat treatment without providing any other gap has been known for some time.
【０００３】前記恒透磁性は、磁心の製造工程における
焼鈍、すなわち熱処理温度条件に大きく依存しており、
安定した恒透磁性を得るためには熱処理温度条件を厳密
に制御する必要があった。The constant magnetic permeability greatly depends on the annealing, ie, heat treatment temperature conditions in the manufacturing process of the magnetic core.
In order to obtain stable magnetic permeability, it was necessary to strictly control the heat treatment temperature conditions.
【０００４】0004
【発明が解決しようとする課題】しかし、前記熱処理条
件を厳格に制御したとしても、必ずしも目標の恒透磁性
を有する磁心が得られないことが知られていた。[Problems to be Solved by the Invention] However, it has been known that even if the heat treatment conditions are strictly controlled, a magnetic core having the desired constant magnetic permeability cannot necessarily be obtained.
【０００５】本発明者は、この原因が材料として提供さ
れる磁性リボンの特性のばらつき、すなわち組成のばら
つきに起因していることを見い出した。[0005] The inventor of the present invention has discovered that the cause of this is due to variations in the properties of the magnetic ribbon provided as a material, that is, variations in composition.
【０００６】図１は、磁性リボンの各素材ロットから任
意に抽出した１４本（Ｒ１〜Ｒ１４）のサンプルについ
て熱処理温度と透磁率との関係を示したものである。な
お同図における熱処理条件は大気中で、その熱処理時間
は２時間である。FIG. 1 shows the relationship between heat treatment temperature and magnetic permeability for 14 samples (R1 to R14) arbitrarily extracted from each material lot of magnetic ribbons. Note that the heat treatment conditions in the figure are in the atmosphere, and the heat treatment time is 2 hours.
【０００７】この透磁率はヒューレットパッカード株式
会社製、プレシジョンＬＣＲメータＨＰ４２８４Ａおよ
び４２８４１Ａを用いて交流磁界１００ｋＨｚ、５ｍＯ
ｅ、直流磁界０Ｏｅの条件で測定を行ったものである。This magnetic permeability was determined using precision LCR meters HP4284A and 42841A manufactured by Hewlett-Packard Co., Ltd. under an AC magnetic field of 100kHz and 5mO.
e, measurements were taken under the condition of a DC magnetic field of 0 Oe.
【０００８】この透磁率と恒透磁性との間には、図２で
示す様な関係があり、直流磁界０Ｏｅにおける透磁率を
測定するだけで、直流磁界を重畳した場合の透磁率、す
なわち恒透磁性を推測することができる。There is a relationship between this magnetic permeability and constant magnetic permeability as shown in FIG. Magnetic permeability can be inferred.
【０００９】したがって、必然的に、磁界を印加しない
状態（０Ｏｅ）における透磁率を下げることによって恒
透磁性を得ることができる。[0009] Therefore, necessarily, constant magnetic permeability can be obtained by lowering the magnetic permeability in a state where no magnetic field is applied (0 Oe).
【００１０】ところで、図１によれば、たとえば４４５
℃の温度条件で２時間の加熱処理を行った場合、透磁率
は２５０を中心に１８０〜３８０の範囲のものが同時に
生じてしまう。すなわち、温度条件を厳密に制御したと
しても、得られた磁心は、透磁率において最大２００の
差が生じてしまう可能性があり、歩留まりが極めて悪く
なる可能性があった。By the way, according to FIG. 1, for example, 445
When heat treatment is carried out for 2 hours at a temperature of 0.degree. C., magnetic permeability values of 180 to 380 occur at the same time, with the magnetic permeability being 250. That is, even if the temperature conditions are strictly controlled, there is a possibility that the obtained magnetic cores will have a maximum difference of 200 points in magnetic permeability, and the yield may be extremely poor.
【００１１】本発明は前記課題に鑑みてなされたもので
あり、その目的は素材ロットで提供される磁性リボン中
に特性のばらつきのあることに着目して、このようなば
らつきが生じていても定常的に製品特性の安定した磁心
を得ることにある。The present invention has been made in view of the above-mentioned problems, and its purpose is to focus on the fact that there are variations in characteristics among magnetic ribbons provided in different material lots, and to solve the problem even if such variations occur. The objective is to obtain a magnetic core with stable product characteristics on a regular basis.
【００１２】0012
【課題を解決するための手段】本発明は、磁心の熱処理
において、素材ロット中から任意にサンプリングした磁
性リボンの微分結晶化温度を測定し、この測定温度値を
、あらかじめ作成した目標透磁率における熱処理温度に
対応する微分結晶化温度と比較して熱処理温度の補正値
を決定することを要旨とする。[Means for Solving the Problems] The present invention measures the differential crystallization temperature of a magnetic ribbon arbitrarily sampled from a material lot during heat treatment of a magnetic core, and uses this measured temperature value at a predetermined target magnetic permeability. The gist is to determine a correction value for the heat treatment temperature by comparing it with the differential crystallization temperature corresponding to the heat treatment temperature.
【００１３】[0013]
【作用】ここで、微分結晶化温度とはアモルファスの結
晶化時に正方向に差動熱量の変化が最大になる温度と定
義する。[Operation] Here, the differential crystallization temperature is defined as the temperature at which the change in differential heat quantity in the positive direction is maximum during crystallization of amorphous.
【００１４】すなわち、結晶化時において、ＤＳＣ（Ｄ
ｉｆｆｅｒｅｎｔｉａｌ Ｓｃａｎｎｉｎｇ Ｃａｌｏ
ｒｉｍｅｔｒｙ）曲線を時間で微分した曲線により得る
ことができる。That is, during crystallization, DSC (D
iferential Scanning Calo
rimetry) curve can be obtained by differentiating the curve with respect to time.
【００１５】ここで、前記結晶化ピーク温度（Ｔｘ）と
しては、２箇所においてピーク温度が表れる場合がある
が、このとき第１結晶化温度の微分結晶化温度を第１微
分結晶化温度（ＴＸ１ｄ）とし、第２結晶化温度の微分
結晶化温度を第２微分結晶化温度（ＴＸ２ｄ）とする。Here, as the crystallization peak temperature (Tx), peak temperatures may appear at two locations, but in this case, the differential crystallization temperature of the first crystallization temperature is defined as the first differential crystallization temperature (TX1d). ), and the differential crystallization temperature of the second crystallization temperature is defined as the second differential crystallization temperature (TX2d).
【００１６】前記手段において、熱処理を行う磁心本体
としては、たとえばアモルファス金属性の磁性リボンを
スリット状に加工してこれを巻回したものを用いること
ができる。[0016] In the above means, as the magnetic core body to be heat-treated, for example, an amorphous metal magnetic ribbon processed into a slit shape and wound around the ribbon can be used.
【００１７】本発明で使用するアモルファス金属として
は、合金中のＦｅの含有量が５０原子％以上のＦｅ基ア
モルファス合金（金属）であり、これらのＦｅ基アモル
ファス合金としては、Ｆｅ−Ｂ，Ｆｅ−Ｂ−Ｃ，Ｆｅ−
Ｂ−Ｓｉ，Ｆｅ−Ｂ−Ｓｉ−Ｃ，Ｆｅ−Ｂ−Ｓｉ−Ｃｒ
，Ｆｅ−Ｃｏ−Ｂ−Ｓｉ，Ｆｅ−Ｎｉ−Ｍｏ−Ｂ等のＦ
ｅ系のものを例示できる。この中で特に好ましいＦｅ基
アモルファス金属としては、ＦｅＸＳｉＹＢＺＭＷが例
示できる。ここで、Ｘ＝５０〜８５、Ｙ＝５〜１５、Ｚ
＝５〜２５（Ｘ，Ｙ，Ｚはいずれも原子％を表す）、Ｍ
はＣｏ，Ｎｉ，Ｎｂ，Ｔａ，Ｍｏ，Ｗ，Ｚｒ，Ｃｕ，Ｃ
ｒ，Ｍｎ，Ａｌ，Ｐ等１種または２種以上の組み合わせ
からなる金属で、Ｗ＝０〜５原子％のものである。The amorphous metal used in the present invention is an Fe-based amorphous alloy (metal) in which the content of Fe in the alloy is 50 atomic % or more, and these Fe-based amorphous alloys include Fe-B, Fe -B-C,Fe-
B-Si, Fe-B-Si-C, Fe-B-Si-Cr
, Fe-Co-B-Si, Fe-Ni-Mo-B, etc.
Examples include those of the e type. Among these, FeXSiYBZMW can be exemplified as a particularly preferable Fe-based amorphous metal. Here, X=50~85, Y=5~15, Z
= 5 to 25 (X, Y, Z all represent atomic %), M
is Co, Ni, Nb, Ta, Mo, W, Zr, Cu, C
It is a metal consisting of one type or a combination of two or more types such as r, Mn, Al, P, etc., and W = 0 to 5 atomic %.
【００１８】なお、熱処理雰囲気としては、大気と同条
件であってもよいが、好ましくは窒素雰囲気等の不活性
雰囲気を用いることにより、アモルファスリボンの端部
止めに用いたカプトンテープの剥離等を防止することも
できる。The heat treatment atmosphere may be the same as the atmosphere, but preferably an inert atmosphere such as a nitrogen atmosphere is used to prevent peeling of the Kapton tape used to fasten the ends of the amorphous ribbon. It can also be prevented.
【００１９】また、熱処理に際して処理条件として湿潤
雰囲気としてもよい。この場合、磁心本体を２５℃換算
における単位水蒸気量が３〜６００ｇ／ｍ３、特に好ま
しくは２０〜２００ｇ／ｍ３の湿潤雰囲気中で熱処理す
ることにより、比較的低温領域で磁心の透磁率を抑制し
、広い温度範囲で安定的な恒透磁性を得ることができる
。[0019] Furthermore, a humid atmosphere may be used as the treatment condition during the heat treatment. In this case, the permeability of the magnetic core can be suppressed in a relatively low temperature region by heat treating the magnetic core body in a humid atmosphere with a unit water vapor amount of 3 to 600 g/m3, particularly preferably 20 to 200 g/m3, converted to 25°C. , it is possible to obtain stable constant magnetic permeability over a wide temperature range.
【００２０】本発明では、まず熱処理前の素材ロットか
ら磁性リボンを任意に抽出し、この磁性リボンの一部を
切り取り、これを試料としてＤＳＣ（Ｄｉｆｆｅｒｅｎ
ｔｉａｌ Ｓｃａｎｎｉｎｇ Ｃａｌｏｒｉｍｅｔｒｙ
：示差走査熱量測定）装置を用いて微分結晶化温度を測
定する。[0020] In the present invention, first, a magnetic ribbon is arbitrarily extracted from a material lot before heat treatment, a part of this magnetic ribbon is cut out, and this is subjected to DSC (Different Scanning) as a sample.
tial Scanning Calorimetry
The differential crystallization temperature is measured using a differential scanning calorimetry (differential scanning calorimetry) device.
【００２１】図３は、磁性リボンを１０ｍｇ試料として
秤量し、ＤＳＣ装置を用いて測定した差動熱量の変化を
示しており、同図より第１微分結晶化温度（Ｔｘ１ｄ）
が判明する。[0021] Figure 3 shows the change in differential heat quantity measured using a DSC device by weighing a 10 mg sample of magnetic ribbon.
becomes clear.
【００２２】次に、あらかじめ測定された目標透磁率に
おける熱処理温度と第１微分結晶化温度（ＴＸ１ｄ）と
の関係式に前記ＤＳＣ装置からの測定温度値を代入し、
熱処理温度を決定する。Next, the measured temperature value from the DSC device is substituted into the relational expression between the heat treatment temperature and the first differential crystallization temperature (TX1d) at the target magnetic permeability measured in advance,
Determine the heat treatment temperature.
【００２３】前記関係式は、たとえば以下のように導く
ことができる。このような関係式は、たとえば目標透磁
率における熱処理温度と第１微分結晶化温度（Ｔｘ１ｄ
）との関係をあらかじめ複数のロット素材でサンプリン
グしておくことにより得られる。The above relational expression can be derived, for example, as follows. Such a relational expression is, for example, the heat treatment temperature at the target permeability and the first differential crystallization temperature (Tx1d
) can be obtained by sampling multiple lot materials in advance.
【００２４】図４は、透磁率２５０における微分結晶化
温度に対する熱処理温度の変化を示しており、図５は透
磁率３００における微分結晶化温度に対する熱処理温度
の変化を示している。FIG. 4 shows the change in heat treatment temperature with respect to the differential crystallization temperature at a magnetic permeability of 250, and FIG. 5 shows the change in the heat treatment temperature with respect to the differential crystallization temperature at a magnetic permeability of 300.
【００２５】両図に示すように、微分結晶化温度と熱処
理温度との間には正の強い相関関係があることが見い出
され、これから最小自乗法により下記の数１および数２
が導き出される。数１は透磁率２５０の場合であり、数
２は透磁率３００の場合である。As shown in both figures, it has been found that there is a strong positive correlation between the differential crystallization temperature and the heat treatment temperature, and from this, the following Equations 1 and 2 can be calculated using the least squares method.
is derived. Equation 1 is for a magnetic permeability of 250, and Equation 2 is for a magnetic permeability of 300.
【００２６】[0026]
【数１】 Ｔ（℃）＝１．１４９Ｔｘ１ｄ−１３８．４３[Math 1] T (°C) = 1.149Tx1d-138.43
【００２
７】002
7]
【数２】
Ｔ（℃）＝０．９５３Ｔｘ１ｄ−４１．４９前記数１お
よび数２において、Ｔは目標透磁率が得られる熱処理制
御温度であり、Ｔｘ１ｄは第１微分結晶化温度である。
いずれも相関関数は０．９８以上である。[Formula 2] T (°C) = 0.953Tx1d - 41.49 In Equations 1 and 2 above, T is the heat treatment control temperature at which the target magnetic permeability is obtained, and Tx1d is the first differential crystallization temperature. In both cases, the correlation function is 0.98 or more.
【００２８】電気炉における熱処理温度は、この熱処理
制御温度（Ｔ）に基づきこの電気炉を１℃ずつ制御する
。The heat treatment temperature in the electric furnace is controlled by 1° C. based on the heat treatment control temperature (T).
【００２９】このように、数１および数２より決定した
熱処理制御温度により電気炉を制御して熱処理を行う。In this way, heat treatment is performed by controlling the electric furnace using the heat treatment control temperature determined from Equations 1 and 2.
【００３０】[0030]
【実施例１】以下、本発明の実施例を説明する。[Embodiment 1] An embodiment of the present invention will be described below.
【００３１】アライド社のアモルファスリボン（製品名
：Ｍｅｔｇｌａｓ２６０５Ｓ−２：Ｆｅ７８Ｂ１３Ｓｉ
９（原子％），厚さ２１μｍ，幅１０ｍｍ）を巻回して
、外径２５ｍｍ，内径１５ｍｍのトロイダル状の磁心本
体を得た。[0031] Allied's amorphous ribbon (product name: Metglas2605S-2: Fe78B13Si
9 (at.
【００３２】一方、前記アモルファスリボンの各製品ロ
ットより任意に抽出した試料についてＤＳＣ装置を用い
て微分結晶化温度（Ｔｘ１ｄ）を測定した。On the other hand, the differential crystallization temperature (Tx1d) of samples arbitrarily extracted from each product lot of the amorphous ribbon was measured using a DSC device.
【００３３】次に、この測定値を前述の数１または数２
に代入して熱処理温度（Ｔ）を決定し、これに基づいて
電気炉を制御した。Next, this measured value is calculated using the above-mentioned equation 1 or equation 2.
The heat treatment temperature (T) was determined by substituting , and the electric furnace was controlled based on this.
【００３４】このとき本実施例では、微分結晶化温度（
Ｔｘ１ｄ）が５０５．７℃についてその熱処理温度（Ｔ
）を４４３℃に制御した。その結果、目標透磁率２５０
に対して２４５〜２５５の範囲のものが歩留り９９％で
得られた。At this time, in this example, the differential crystallization temperature (
The heat treatment temperature (Tx1d) is 505.7°C.
) was controlled at 443°C. As a result, the target permeability is 250
245 to 255 was obtained with a yield of 99%.
【００３５】前記熱処理の完了後、この磁心本体にギャ
ップを設けることなく合成樹脂からなるケースに収容し
、磁心とした。[0035] After the heat treatment was completed, the core body was housed in a case made of synthetic resin without providing a gap to form a magnetic core.
【００３６】[0036]
【実施例２】前記実施例１と同様の、アライド社のアモ
ルファスリボン（製品名：Ｍｅｔｇｌａｓ２６０５Ｓ−
２：Ｆｅ７８Ｂ１３Ｓｉ９（原子％），厚さ２１μｍ，
幅１０ｍｍ）を巻回して、外径２５ｍｍ，内径１５ｍｍ
のトロイダル状の磁心本体を得た。[Example 2] Similar to Example 1, an amorphous ribbon (product name: Metglas 2605S-
2: Fe78B13Si9 (atomic %), thickness 21 μm,
Width: 10mm), outer diameter: 25mm, inner diameter: 15mm
A toroidal magnetic core body was obtained.
【００３７】一方、前記アモルファスリボンの各製品ロ
ットより任意に抽出した試料についてＤＳＣ装置を用い
て微分結晶化温度（Ｔｘ１ｄ）を測定した。On the other hand, the differential crystallization temperature (Tx1d) of samples arbitrarily extracted from each product lot of the amorphous ribbon was measured using a DSC device.
【００３８】次に、この測定値を前述の数１または数２
に代入して熱処理温度（Ｔ）を決定し、これに基づいて
電気炉を制御した。Next, this measured value is calculated using the above-mentioned equation 1 or equation 2.
The heat treatment temperature (T) was determined by substituting , and the electric furnace was controlled based on this.
【００３９】このとき本実施例では、微分結晶化温度（
Ｔｘ１ｄ）が５０８．５℃についてその熱処理温度（Ｔ
）を４４３℃に制御した。その結果、目標透磁率３００
０に対して２９０〜３００の範囲のものが歩留り９７％
で得られた。At this time, in this example, the differential crystallization temperature (
The heat treatment temperature (Tx1d) is 508.5°C.
) was controlled at 443°C. As a result, the target permeability is 300
Those in the range of 290 to 300 compared to 0 have a yield of 97%.
Obtained with.
【００４０】前記熱処理の完了後、この磁心本体にギャ
ップを設けることなく合成樹脂からなるケースに収容し
、磁心とした。[0040] After the heat treatment was completed, the core body was housed in a case made of synthetic resin without providing a gap to form a magnetic core.
【００４１】以上のように、各実施例によれば、素材ロ
ットのばらつきを、熱処理時においてその微分結晶化温
度を基準にして補正することにより、特に高い歩留まり
を得ることができた。As described above, according to each of the examples, particularly high yields could be obtained by correcting variations in material lots based on the differential crystallization temperature during heat treatment.
【００４２】[0042]
【発明の効果】本発明によれば、素材として提供される
熱処理前の磁性リボンにばらつきが生じている場合であ
っても、定常的に製品特性の安定した磁心を得ることが
できる。According to the present invention, even if there are variations in the magnetic ribbon before heat treatment provided as a raw material, it is possible to constantly obtain a magnetic core with stable product characteristics.
【図１】磁性リボンのロット毎の熱処理温度と透磁率と
のばらつきを示すグラフ図[Figure 1] Graph showing variations in heat treatment temperature and magnetic permeability for each lot of magnetic ribbon
【図２】磁性リボンにおける直流重畳磁界に対する透磁
率の変化を示すグラフ図[Figure 2] Graph diagram showing changes in magnetic permeability due to direct current superimposed magnetic field in a magnetic ribbon
【図３】実施例において、ＤＳＣ装置を用いて測定され
た作動熱量の変化と微分結晶化温度の変化とを示すグラ
フ図FIG. 3 is a graph diagram showing changes in operating heat amount and changes in differential crystallization temperature measured using a DSC device in Examples.
【図４】透磁率２５０における微分結晶化温度に対する
熱処理温度の変化を示すグラフ図[Figure 4] Graph diagram showing changes in heat treatment temperature with respect to differential crystallization temperature at magnetic permeability of 250
【図５】透磁率３００における微分結晶化温度に対する
熱処理温度の変化を示すグラフ図[Figure 5] Graph diagram showing changes in heat treatment temperature with respect to differential crystallization temperature at magnetic permeability of 300
Claims (1)
際に、素材ロット中から任意にサンプリングした磁性リ
ボンの微分結晶化温度を測定し、この測定温度値を、あ
らかじめ作成した目標透磁率における熱処理温度に対応
する微分結晶化温度値と比較して最適な熱処理温度を決
定することを特徴とする磁心の熱処理方法。Claim 1: When heat treating the magnetic ribbon after winding, the differential crystallization temperature of the magnetic ribbon arbitrarily sampled from the material lot is measured, and this measured temperature value is used for heat treatment at a target magnetic permeability created in advance. A method for heat treatment of a magnetic core, characterized in that an optimal heat treatment temperature is determined by comparing with a differential crystallization temperature value corresponding to the temperature.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3037644A JP2952717B2 (en) | 1991-03-04 | 1991-03-04 | Heat treatment method of magnetic core |
| KR1019920702742A KR970007511B1 (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing & applying heat treatment to a agnetic core |
| AT92905956T ATE154158T1 (en) | 1991-03-04 | 1992-03-04 | METHOD FOR PRODUCING A MAGNETIC CORE BY HEAT TREATING THE SAME |
| PCT/JP1992/000256 WO1992015997A1 (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing magnetic core and of heat-treating the same |
| DE69220150T DE69220150T2 (en) | 1991-03-04 | 1992-03-04 | METHOD FOR PRODUCING A MAGNETIC CORE BY HEAT TREATMENT THEREOF |
| EP92905956A EP0527233B1 (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing magnetic core by heat-treating the same |
| CN92102499A CN1048576C (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing and appolying heat treatment to magnetic core |
| US07/941,113 US5439534A (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing and applying heat treatment to a magnetic core |
| CA002082061A CA2082061C (en) | 1991-03-04 | 1992-03-04 | Method of manufacturing and applying heat treatment to a magnetic core |
| TW081101775A TW201844B (en) | 1991-03-04 | 1992-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3037644A JP2952717B2 (en) | 1991-03-04 | 1991-03-04 | Heat treatment method of magnetic core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04275410A true JPH04275410A (en) | 1992-10-01 |
| JP2952717B2 JP2952717B2 (en) | 1999-09-27 |
Family
ID=12503362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3037644A Expired - Lifetime JP2952717B2 (en) | 1991-03-04 | 1991-03-04 | Heat treatment method of magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952717B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2755292A1 (en) * | 1996-10-25 | 1998-04-30 | Mecagis | PROCESS FOR PRODUCING A MAGNETIC CORE OF NANOCRYSTALLINE SOFT MAGNETIC MATERIAL |
-
1991
- 1991-03-04 JP JP3037644A patent/JP2952717B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2755292A1 (en) * | 1996-10-25 | 1998-04-30 | Mecagis | PROCESS FOR PRODUCING A MAGNETIC CORE OF NANOCRYSTALLINE SOFT MAGNETIC MATERIAL |
| EP0844628A1 (en) * | 1996-10-25 | 1998-05-27 | Mecagis | Process for producing a magnetic core of nanocristalline soft magnetic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2952717B2 (en) | 1999-09-27 |
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