JPS5925955A - Amorphous alloy with small iron loss - Google Patents

Abstract

PURPOSE:To manufacture a material for a power transformer with a very small iron loss by rapidly cooling a molten Fe-B-Si-C alloy having a specified composition on a cooling body to form an amorphous plate. CONSTITUTION:An Fe-B-Si-C alloy consisting of, by atom, w% Fe, x% B, y% Si and z% C [w=100-(x+y+z), x+y+z=21-25, y=2-8 and z<=] is melted, and the molten alloy is rapidly cooled and solidified by spraying on a cooling roll rotating at high speed to manufacture a plate having an amorphous structure. The plate is annealed and used as a core material for a transformer. An alloy plate with a small iron loss at commercial frequency and superior magnetic characteristics is obtd.

Description

【発明の詳細な説明】 本発明は低鉄損非晶質合金に係り、特に電力用変圧器材
料として用いる場合に極めて低い鉄損を有する非晶質合
金に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low core loss amorphous alloy, and particularly to an amorphous alloy having extremely low core loss when used as a power transformer material.

電力用変圧器材料としては、一般に珪素伯゛１板が用い
られている。この鋼板は安価で扱い易くすぐれた磁気特
性、特に商用周波数において低鉄損を示すことがよく知
られている。しかし上記の電磁鋼板は製造工程が複雑で
これを製造するだめの費用は極めて高く、比較的高価な
鋼欅となっている。Silicon aluminum plate is generally used as a material for power transformers. This steel plate is well known to be inexpensive, easy to handle, and exhibits excellent magnetic properties, especially low iron loss at commercial frequencies. However, the above-mentioned electromagnetic steel sheet has a complicated manufacturing process and the manufacturing cost is extremely high, making it a relatively expensive steel.

従って鋼板を製造する＼″ｒ場からは、工程を簡略化し
た低コストでの製造方法と、使用者側からは、さらに低
い鉄損を示す材料が望１れていた。Therefore, there has been a demand for a low-cost manufacturing method that simplifies the process for steel plate manufacturers, and a material that exhibits even lower core loss from users.

上記の要請に対して近年、溶で−から直接冷却体」−に
て急冷することにより製造される非晶質合金が示され、
この合金は製造工程が簡単であると同時に極めて低い鉄
損を示すことが明らかとなった。In response to the above requirements, in recent years, amorphous alloys have been developed that are manufactured by rapidly cooling the melt in a cooling body.
It has been found that this alloy has a simple manufacturing process and at the same time exhibits extremely low iron loss.

従来、非晶質合金の鉄損については、」１１定例が少な
く、容易に測定できる保持力が低い素材をもって鉄損の
低い素材とし、その合金の組成範囲が示されてきた。非
晶質合金の場合商用周波数では、鉄損の大部分が履歴損
であるから保磁力をもって、鉄損とみなしてきた。Conventionally, there are few rules regarding the iron loss of amorphous alloys, and a material with a low coercive force that can be easily measured is regarded as a material with low iron loss, and the composition range of the alloy has been indicated. In the case of amorphous alloys, at commercial frequencies, most of the iron loss is hysteresis loss, so coercive force has been regarded as iron loss.

本発明の目的は電力用変圧器材として鉄損が著しく低い
非晶質合金を提供す、るにある。An object of the present invention is to provide an amorphous alloy with extremely low core loss for use as a power transformer.

本発明者らは多くの実験を繰返した結果、商用周波数に
おける鉄損が最も低い値を示す非晶質成分を見いだすこ
とができた。As a result of repeating many experiments, the present inventors were able to find an amorphous component that exhibits the lowest iron loss at commercial frequencies.

本発明の要旨とするところは次のとおりである。The gist of the present invention is as follows.

すなわちＦｅｗ　　Ｂｘ　　Ｓｉｙ　　Ｃｚにて示され
それぞれの原子％ｗ、ｘ％　ｙ、ｚは下記の関係を満足
する糸目成であることを特徴とする低鉄損非晶ノｅｆ合
金である。That is, it is a low core loss amorphous EF alloy, which is expressed as Few Bx Siy Cz, where the respective atomic % w, x % y, and z satisfy the following relationships.

ｗ　＝　１００−　（ｘ　＋　ｙ＋　２　）ｘ　＋　ｙ
　＋　ｚ　＝　２１〜２５ ｙ　＝７〜８ Ｚ　＜　１ 本発明の成分を限定した理由について説明する。w = 100- (x + y+ 2)x + y
+ z = 21-25 y = 7-8 Z < 1 The reason for limiting the components of the present invention will be explained.

まず成分を限定する基礎となった実験について説明゛す
る。Ｆｅを主体とするＩ３．Ｓｉ、Ｃの４元素を用いて
多数の非晶質合金を製潰し、その合金の周波数５０ヘル
ツ、磁束密度１．　（ｌ　ｉ’における鉄４ｉを測定し
た。添付図面は測定した鉄損を等高線で結び成分との関
係を示したものである。First, I will explain the experiments that formed the basis for limiting the ingredients. I3. mainly composed of Fe. A large number of amorphous alloys are milled using the four elements Si and C, and the resulting alloy has a frequency of 50 Hz and a magnetic flux density of 1. (The iron 4i at l i' was measured. The attached drawing shows the relationship between the measured iron losses and the components by connecting them with contour lines.

添伺図面から鉄損が（１，１６ｗ　／　ｋｇ以下を示す
範囲は極めて狭（、Ｆ（！が７５〜７９に１子％、でか
つＳｉが２〜８原子％の範囲であることが分る。From the accompanying drawings, it is clear that the range in which iron loss is below (1.16 w/kg) is extremely narrow (, F(! is 1% in 75 to 79, and Si is in the range of 2 to 8 atomic%. Ru.

本発明はＦ　ｅ　　Ｉ３　　Ｓ　＋　　Ｃの４元系合金
であり、この他には不可避的に含まれる微１１°の不純
物以外は含有しないので当然ｗ＋ｘ＋１１／−１−ｚ＝
１００である。従ってｗ　＝　１００−　（ｘ　＋　ｙ
　＋　ｙ、　）の関係が成立する。The present invention is a quaternary alloy of F e I3 S + C, and since it contains no other impurities other than the unavoidable 11° impurity, naturally w+x+11/-1-z=
It is 100. Therefore w = 100- (x + y
+y, ) holds true.

父上記の如く鉄損を０．１６　ｗ　／　ｋＬｉ以下とす
るた゛めには　ｐ　ｅは７５〜７９％の範囲となるので
、それに該当する他の３元素の関係は次の如くになる。As mentioned above, in order to reduce the iron loss to 0.16 w/kLi or less, pe is in the range of 75 to 79%, so the relationship among the other three elements corresponding to this is as follows.

ｘ＋ｙ−１−ｚ＝１　０（１−ｗ＝１　０Ｏ−（７５〜
７９）〜２１　〜２５次にＳｉの範囲は上記の如く９〜
８原子％であるのでＹ＝２〜８の関係となる。x+y-1-z=10(1-w=10O-(75~
79) ~21 ~25 Next, the range of Si is 9~25 as above.
Since it is 8 atomic %, the relationship Y=2-8.

又Ｃは上記の如きｐｃ、４３、Ｓｌの関係において１％
を越すと非晶質の形成が著しく困難となるので１原子％
以下に限定した。Also, C is 1% in the above relationship of pc, 43, and Sl.
If it exceeds 1 atom%, it becomes extremely difficult to form an amorphous state.
Limited to the following.

なお上記の本発明の限定条件を満足しなくても非晶質合
金を生成できるが、鉄損のすぐれたものはできなかった
。Although it is possible to produce an amorphous alloy without satisfying the above-mentioned limiting conditions of the present invention, it has not been possible to produce an alloy with excellent core loss.

実施例１ Ｆｅ７８　　Ｉ３＋４．Ｆｌ’　Ｓｉ７　　Ｃｏ、５か
らなる合金を溶解し、スリット幅１００腔のノズルから
回転するロール上に射出して急冷凝固させ非晶ノｅＪ合
金を製造した。板厚は約３５μで角度１８０　Ｉｒ！’
曲げおよびＸ線回折結果から非晶’Ｎ合金であることが
６（ｒ認でＯ，］２ｗ／ｋｏであった。Example 1 Fe78 I3+4. An alloy consisting of Fl' Si7 Co, 5 was melted, injected onto rotating rolls from a nozzle with a slit width of 100 cavities, and rapidly solidified to produce an amorphous eJ alloy. The plate thickness is approximately 35 μ and the angle is 180 Ir! '
The results of bending and X-ray diffraction showed that it was an amorphous 'N alloy with a value of 6 (O,]2 w/ko.

実施例２ ］”Ｃ７７［３１７Ｓｉ５　　Ｃ１からなる組成を有す
る合金を溶解し２、スリットノズルから回転するロール
上に射出し、非晶質合金を製造［７た。この合金の板厚
は３０μを示し、Ｘ線の結果から非晶）ｔ′ｆであるこ
とを確認し、この合金を３５　＋ｌ　Ｔで６０分間焼鈍
した後磁気を測定した。その結果、磁束であった。Example 2 An alloy having a composition of ``C77[317Si5 C1] was melted and injected from a slit nozzle onto a rotating roll to produce an amorphous alloy [7].The plate thickness of this alloy was 30μ. From the X-ray results, it was confirmed that the alloy was amorphous) t'f, and after annealing this alloy at 35 +l T for 60 minutes, the magnetism was measured.The magnetic flux was measured.

本発明は上記実施例からも明らかな如く、Ｆ　ｅ　−Ｂ
　−８ｉ　−Ｃ４元系合金の原子％の関係を一定の範囲
に限定することによって極めて低い鉄損を有する非晶質
合金を得ることができだ。As is clear from the above examples, the present invention is based on F e -B
By limiting the atomic percent relationship of the -8i-C quaternary alloy to a certain range, it is possible to obtain an amorphous alloy with extremely low iron loss.

【図面の簡単な説明】[Brief explanation of drawings]

添付図面はＢ’　ｅ−Ｓ　ｉ　−１３−Ｃ非晶質合金の
各成分と鉄損の関係を示す等高線図である。 代理人　　中　路　武　雄The attached drawing is a contour diagram showing the relationship between each component of the B'e-S i -13-C amorphous alloy and iron loss. Agent Takeo Nakaji

Claims (1)

【特許請求の範囲】[Claims] （１）　　ＰｅＷ　Ｂｘ　　Ｓｉｙ　　Ｃｚにて示され
それぞれの原子％Ｗｔ　　ｘｔ　　ｙｓ　　ｚは下記の
関係を満足する組成であることを特徴とする低鉄損非晶
質合金。 ｗ　＝　１００−　（ｘ　＋　Ｙ　＋　Ｚ　）ｘ　＋　
ｙ　−４−ｚ　＝　２１〜２５ｙ−２〜８ １≦１(1) A low core loss amorphous alloy characterized by having a composition represented by PeW Bx Siy Cz, where each atomic % Wt xt ys z satisfies the following relationship. w = 100− (x + Y + Z)x +
y-4-z = 21~25y-2~8 1≦1