JPS6331925B2 - - Google Patents
Info
- Publication number
- JPS6331925B2 JPS6331925B2 JP54080380A JP8038079A JPS6331925B2 JP S6331925 B2 JPS6331925 B2 JP S6331925B2 JP 54080380 A JP54080380 A JP 54080380A JP 8038079 A JP8038079 A JP 8038079A JP S6331925 B2 JPS6331925 B2 JP S6331925B2
- Authority
- JP
- Japan
- Prior art keywords
- ferrite
- oxide
- magnetic core
- air
- heat treatment
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
Landscapes
- Magnetic Ceramics (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Soft Magnetic Materials (AREA)
Description
【発明の詳細な説明】
この発明は、電球型の放電灯光源等に用いる酸
化物磁心の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an oxide magnetic core used in a light bulb-type discharge lamp light source and the like.
従来の螢光放電灯に用いる酸化物磁心すなわち
フエライトコアは、例えばトロイダル状コアを使
用するものであり、前記トロイダル状コアに塗料
を空気中で加熱してコーテイングした後に放電灯
中に封入するものであるが、この空気中での加熱
により、フエライトコアが酸化して特性の劣化を
生ずる。特に電力損失が増大することにより放電
灯の安定な点灯ができない等の問題があり、その
解決が早々に望まれておつた。 The oxide magnetic core or ferrite core used in conventional fluorescent discharge lamps uses, for example, a toroidal core, and the toroidal core is coated with paint by heating in the air and then sealed in the discharge lamp. However, this heating in air oxidizes the ferrite core, causing deterioration of its properties. In particular, there is a problem that the discharge lamp cannot be lit stably due to increased power loss, and a solution to this problem has been desired as soon as possible.
この発明は上記問題点を効果的に解決したもの
でりその要旨は、酸化マグネシウム（MgO）、酸
化マンガン（MnO）、酸化亜鉛（ZnO）、三二酸
化鉄（Fe2O3）の四元系の組成を基本組成として
含むフエライトを所定の雰囲気で焼成してからフ
エライト表面を空気中で加熱処理して塗料を塗布
する酸化物磁心の製造方法において前記空気中の
加熱処理温度を410℃以下でおこなうことを特徴
とする酸化物磁心の製造方法に関するものであ
る。 This invention effectively solves the above problems, and its gist is that a quaternary system of magnesium oxide (MgO), manganese oxide (MnO), zinc oxide (ZnO), and iron sesquioxide (Fe 2 O 3 ) In the method for manufacturing an oxide magnetic core, the ferrite having the basic composition is fired in a predetermined atmosphere, and then the ferrite surface is heat-treated in the air and coated with a paint. The present invention relates to a method of manufacturing an oxide magnetic core characterized by carrying out the following steps.
以下図面について説明する。 The drawings will be explained below.
第１図はこの発明を説明する熱天秤で、フエラ
イトの酸化による重量増加比率を示した図であ
り、第２図は同じく熱処理の酸化による電力損失
の特性劣化を示す特性図である。 FIG. 1 is a thermobalance for explaining the present invention, and is a diagram showing the weight increase ratio due to oxidation of ferrite, and FIG. 2 is a characteristic diagram showing the characteristic deterioration of power loss due to oxidation during heat treatment.
第１図に示すごとく、熱天秤により温度を変化
させることによりMg−Mn−Znフエライトの酸
化による重量増加比率（％）を調べた。この測定
に用いた試料は、焼結後のMn−Mg−Znフエラ
イトを鉄乳鉢にて破粋し、その後メノウ乳鉢にて
さらに微細にスリつぶし、200メツシユ以下にし
た粉末を200mg精秤したものを使用した。温度は
300℃／１時間で昇温し、空気は20ml／分で流し
た。第１図によると、410℃を越えるとMg−Mn
−Znフエライトは酸化による重量増加比率が著
しく増大することが認められた。さらにその組成
を第２図に示すように選定したフエライトを空気
中で、１時間熱処理したものと、熱処理なしのも
のの比較した電力損失特性を測定した。第２図に
示すように酸化マグネシウム（MgO）10モル％
で、酸化マンガン（MnO）25モル％、酸化亜鉛
（ZnC）11モル％、三二酸化鉄（Fe2O3）54モル
％の組成からなるMg−Mn−Znフエライトは、
熱処理しないものと400℃で１時間加熱のものが、
高温度域において、低電力損失特性が優れている
ことが認められた。しかしながら塗料をフエライ
トにコーテイングする際には、フエライト表面を
清浄にするために、空気中で熱処理を必然的に要
するので、400℃附近より低い熱処理温度を必要
とする。また詳細な測定により、Mg−Mn−Zn
フエライトは熱処理温度が410℃を越えると電力
損失の増大することが認められた。 As shown in FIG. 1, the weight increase ratio (%) due to oxidation of Mg-Mn-Zn ferrite was investigated by changing the temperature using a thermobalance. The sample used for this measurement was obtained by crushing Mn-Mg-Zn ferrite after sintering in an iron mortar, then grinding it into fine pieces in an agate mortar, and precisely weighing out 200 mg of the powder to a size of 200 mesh or less. It was used. The temperature is
The temperature was raised at 300°C/1 hour, and air was flowed at 20ml/min. According to Figure 1, when the temperature exceeds 410℃, Mg−Mn
- It was observed that the weight increase rate due to oxidation of Zn ferrite increased significantly. Furthermore, the power loss characteristics of ferrite whose composition was selected as shown in FIG. 2 were heat-treated in air for 1 hour and those without heat treatment were measured. Magnesium oxide (MgO) 10 mol% as shown in Figure 2
The Mg-Mn-Zn ferrite has a composition of 25 mol% manganese oxide (MnO), 11 mol% zinc oxide (ZnC), and 54 mol% iron sesquioxide (Fe 2 O 3 ).
The one without heat treatment and the one heated at 400℃ for 1 hour.
It was found that it has excellent low power loss characteristics in the high temperature range. However, when coating ferrite with a paint, heat treatment in air is inevitably required to clean the ferrite surface, so a heat treatment temperature lower than around 400°C is required. Furthermore, detailed measurements revealed that Mg−Mn−Zn
It was found that the power loss of ferrite increases when the heat treatment temperature exceeds 410°C.
以上述べたようにこの発明によつて得られる作
用効果は酸化マグネシウム（MgO）、酸化マンガ
ン（MnO）、酸化亜鉛（ZnO）、三二酸化鉄
（Fe2O3）の四元系の組成を基本組成として含む
フエライトを所定の雰囲気で焼成してからフエラ
イト表面を空気中で加熱処理して塗料を塗布する
酸化物磁心の製造方法において前記空気中の加熱
処理温度を410℃以下でおこなうことを特徴とす
る酸化物磁心の製造方法によりなんらフエライト
コアが酸化することなく、しかも電力損失の特性
劣化を生ずることのないものが得られた。 As stated above, the effects obtained by this invention are based on the quaternary composition of magnesium oxide (MgO), manganese oxide (MnO), zinc oxide (ZnO), and iron sesquioxide (Fe 2 O 3 ). A method for producing an oxide magnetic core in which ferrite contained in the composition is fired in a predetermined atmosphere, and then the ferrite surface is heat-treated in the air and a paint is applied, characterized by performing the heat treatment in the air at a temperature of 410°C or less. By the manufacturing method of the oxide magnetic core described above, a ferrite core was obtained without any oxidation of the ferrite core and without deterioration of power loss characteristics.
さらに副次的効果として、この発明の酸化物磁
心、いわるフエライトコアを電球型の放電灯光源
として、石英ガラス中に封入して安定な高周波点
灯ができるようになり、その放電灯の寿命はきわ
めて長大である等照明業界および電子材料業界に
貢献することの多大な発明である。 Furthermore, as a side effect, the oxide magnetic core of this invention, so-called ferrite core, can be used as a bulb-shaped discharge lamp light source and sealed in quartz glass for stable high-frequency lighting, and the lifespan of the discharge lamp can be extended. This is an extremely long invention that has contributed greatly to the lighting industry and the electronic materials industry.
第１図はこの発明を説明するためのフエライト
の酸化による重量増加比率を示した図であり、第
２図は同じく熱処理の酸化による電力損失の特性
劣化を示す特性図である。
FIG. 1 is a diagram showing the weight increase ratio due to oxidation of ferrite for explaining the present invention, and FIG. 2 is a characteristic diagram showing the characteristic deterioration of power loss due to oxidation during heat treatment.
Claims (1)
（MnO）、酸化亜鉛（ZnO）、三二酸化鉄（Fe2O3）
の四元系の組成を基本組成として含むフエライト
を所定の雰囲気で焼成してからフエライト表面を
空気中で加熱処理して塗料を塗布する酸化物磁心
の製造方法において前記空気中の加熱処理温度を
410℃以下でおこなうことを特徴とする酸化物磁
心の製造方法。1 Magnesium oxide (MgO), manganese oxide (MnO), zinc oxide (ZnO), iron sesquioxide (Fe 2 O 3 )
In a method for producing an oxide magnetic core, in which ferrite containing a quaternary composition as a basic composition is fired in a predetermined atmosphere, the ferrite surface is heat-treated in air, and a paint is applied.
A method for producing an oxide magnetic core characterized by carrying out the process at a temperature of 410°C or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8038079A JPS564210A (en) | 1979-06-26 | 1979-06-26 | Manufacture of oxide core for discharge-lamp light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8038079A JPS564210A (en) | 1979-06-26 | 1979-06-26 | Manufacture of oxide core for discharge-lamp light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS564210A JPS564210A (en) | 1981-01-17 |
| JPS6331925B2 true JPS6331925B2 (en) | 1988-06-27 |
Family
ID=13716668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8038079A Granted JPS564210A (en) | 1979-06-26 | 1979-06-26 | Manufacture of oxide core for discharge-lamp light source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS564210A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2736889B2 (en) * | 1986-11-06 | 1998-04-02 | ティーディーケイ株式会社 | Ferrite core |
| CN109133899A (en) * | 2018-09-12 | 2019-01-04 | 横店集团东磁股份有限公司 | A kind of high-frequency and low-consumption magnesium doping manganese-zinc ferrite and preparation method thereof |
-
1979
- 1979-06-26 JP JP8038079A patent/JPS564210A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS564210A (en) | 1981-01-17 |
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