KR900002587B1 - Amorphous magnetic materials making method for choke core - Google Patents
Amorphous magnetic materials making method for choke core Download PDFInfo
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- KR900002587B1 KR900002587B1 KR1019860007468A KR860007468A KR900002587B1 KR 900002587 B1 KR900002587 B1 KR 900002587B1 KR 1019860007468 A KR1019860007468 A KR 1019860007468A KR 860007468 A KR860007468 A KR 860007468A KR 900002587 B1 KR900002587 B1 KR 900002587B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
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Abstract
Description
도면은 본 발명 합금과 Mn-Zn 페라이트의 포화자속밀도와 온도관계Figure shows the saturation magnetic flux density and temperature relationship of the present invention alloy and Mn-Zn ferrite
본 발명은 각종 전자장치의 출력측 쵸크코아(Choke Core)에 필요한 직류전류에 의해 쉽게 자속이 포화 되지 않고 고주파 교류분에 대하여 충분한 인덕턱스 값을 갖도록 비정질 금속의 자기 특성을 이용하여 밀도가 높고, 고주파 손실이 적은 특성을 가진 쵸크코아용 비정질 재료 제조방법에 관한 것이다.The present invention has a high density and high frequency by using magnetic properties of amorphous metal so that magnetic flux is not easily saturated by DC current required for the choke core of the output side of various electronic devices and has sufficient inductance value for high frequency AC components. The present invention relates to a method for producing an amorphous material for choke cores with low loss characteristics.
종래의 쵸크코아용 자성재료로써 주로 규소강판의 박대형에 의한 트로이드코아 (Troid Core)나 또는 Nn-Zn 페라이트(Ferrite)에 의한 E형 코아를 사용해왔으나 규소강판박대에서 50㎛까지 얇게해도 고주파에서 코아손실 증가에 의한 발열이 너무커서 전원장치등의 고주파화가 어려웠고, Mn-Zn 페라이트의 경우는 포화자속밀도가 작아서 쵸크코아를 대형화 해야되므로 제품의 소형, 경량화 하는데 어려움이 있는 결점이 있었다.Conventional magnetic material for choke cores has been mainly used troid core (Troid Core) of thin silicon steel sheet or E type core of Nn-Zn ferrite (core). The heat generated by the increased loss was so high that it was difficult to increase the frequency of the power supply. In the case of Mn-Zn ferrite, the saturation magnetic flux density was small and the choke core had to be enlarged.
따라서, 이와같은 종래의 결점을 완전해소시키기 위해 새로이 발명된 것으로 그 실시예를 통해 상세히 설명하는 다음과 같다.Therefore, the present invention is newly invented to completely solve such a conventional drawback, which will be described in detail through the following embodiments.
본 발명의 합금 조성을 Fe78TM2Si5B15-X(TM=Cr, Mo, Nb, 0.5=X=34)로 하였고 이 조성의 합금을 만들기 위해 99.9%, 순도의 Fe, Nb ,Cr, Mo와 99.95% 순도의 Si 99% 순도의 B, C를 10-5GR까지 측량할수 있는 저울을 이용하여 조성별로 각각 10-20gr으로 측량한 분말을 잘 혼합한 후 마운팅 프레스(Nounting Press)로 1000kgrf/Cm2정도 압력을 가하여 치밀하게 만든후 15KW, 450KHz의 고주파 유도용해로에서 용해하여 모합금을 제조후 헬륨(He)분위기에서 일반적인 비정질 제조방법인 단롤법으로 비정질 리본을 제조하여 이때 진공쳄버(Vacumm Chamber) 압력은 450Torr로 하고 석영관 노즐의 He 가스분사압력은 0.4kgrf/Cm2로 하여 비정질 리본을 제조후 테이프온도(Tape Woun) 방법으로 트로이드코아(Troid Core)를 만든 후 각조성합금을 380-410℃에서 3시간 30분동안 Ar 분위기에서 소둔후 수냉(Water Queenching) 시킴으로써 제조완료한다. 이렇게 얻어진 합금의 자기 특성은 제조시에 발생되었던 응력이 완화되어 결정질에서 볼 수 있는 결정 자기 이방성이 존재하지 않고 등방성으로 되어 우수한 연자성을 실현할 수 있게되고, 천이 금속 Nb, Cr, Mo을 첨가함으로써 자화 특성이 안정화되고, 포화자속밀도가 상승하고 고주파 손실이 적은 신뢰성이 높은 소재가 되는것이다. 따라서 표 1에서 보는 바와 같이 종래의 규소강판 막대로 된 쵸크코아를 사용한 전원장치와 본 발명의 소재를 이용한 전원장치의 효율 및 온도상승에 관해 비교치를 볼 수 있다.The alloy composition of the present invention was set to Fe 78 TM 2 Si 5 B 15-X (TM = Cr, Mo, Nb, 0.5 = X = 34), and to produce an alloy of this composition, it was 99.9% by purity of Fe, Nb, Cr, Using a balance that can measure Mo and 99.95% pure Si and 99% pure B and C up to 10 -5 gr, mix the powders measured at 10 -20 gr each by composition, and then use a mounting press. After making the denser by applying 1000kgrf / Cm 2 pressure and dissolving it in the high frequency induction melting furnace of 15KW, 450KHz, the amorphous alloy is manufactured by the single roll method, which is a general amorphous manufacturing method in helium atmosphere, and vacuum chamber ( Vacumm Chamber pressure is 450 Torr and He gas injection pressure of quartz tube nozzle is 0.4kgrf / Cm 2. After making amorphous ribbon, make Troid Core by Tape Woun method and make each composite alloy. Water quenching after annealing in Ar atmosphere for 3 hours 30 minutes at 380-410 ℃ To be completed. The magnetic properties of the alloy thus obtained are alleviated by the stress generated during manufacturing, and thus are not isotropic in crystal crystalline magnetic anisotropy, so that the soft magnetic properties can be realized. By adding transition metals Nb, Cr, and Mo, The magnetization characteristics are stabilized, the saturation magnetic flux density is increased, and the material has high reliability with low frequency loss. Therefore, as shown in Table 1, the comparison of the efficiency and temperature rise of the power supply device using the choke core made of conventional silicon steel bar and the power supply device using the material of the present invention can be seen.
[표 1] 발명합금 Fe78Mo2Si15B13C2와 규소강판 박대로 된 쵸크코아의 전원장치 비교표.[Table 1] A comparison table of the choke cores with the invention alloy Fe 78 Mo 2 Si 15 B 13 C 2 and silicon steel sheet.
또한 도면에서 보는 바와같이 종래의 Nn-Zn 페라이트 쵸크코아 보다 본발명 합금은 포화자속밀도가 2배이상 크고, 온도상승에 따른 자기특성도 우수함을 알 수 있으며, 고주파 손실이 규소강판 보다 3배이상 작은 것으로써 포화자속밀도가 높고 고주파 손실이 적어야 하는 스위칭 전원용 쵸크코아 특성에 적당한 소재인 것이다.In addition, as shown in the drawing, the present invention alloy has a saturation magnetic flux density that is greater than twice as much as the conventional Nn-Zn ferrite choke core, and excellent magnetic properties due to temperature rise. The small size makes the material suitable for choke core characteristics for switching power supplies with high saturation magnetic flux density and low frequency loss.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019860007468A KR900002587B1 (en) | 1986-09-06 | 1986-09-06 | Amorphous magnetic materials making method for choke core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019860007468A KR900002587B1 (en) | 1986-09-06 | 1986-09-06 | Amorphous magnetic materials making method for choke core |
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| Publication Number | Publication Date |
|---|---|
| KR880004505A KR880004505A (en) | 1988-06-04 |
| KR900002587B1 true KR900002587B1 (en) | 1990-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019860007468A KR900002587B1 (en) | 1986-09-06 | 1986-09-06 | Amorphous magnetic materials making method for choke core |
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- 1986-09-06 KR KR1019860007468A patent/KR900002587B1/en not_active IP Right Cessation
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