JPS58155704A - Wound iron core - Google Patents

Abstract

PURPOSE:To obtain a kind of wound iron core for controlling, to be normally formed by winding a strip of thin alloy plate of high permeability, which is excellent in excitation characteristic by the use of a Fe family amorphous alloy thin plate of which saturated magnetic flux density is more than 3KG and less than 9KG as an alloy thin plate. CONSTITUTION:A wound iron core is formed by winding a thin alloy plate of high permeability into a roll. As a thin alloy plate, such an amorphous alloy that is represented by the formula of FedTeSifBg (in the formula, T is one or more than 2 of Be, Mg, Ca, Sr, Ba, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Ru, Co, Ni, Pd, Cu, Zn, Y, Ce, Pr, Nd, Sm, Eu, Gd, Tb or Dy, and d+e+f+g=100), especially such the amorphous alloy that satisfies the conditions of 3<=e<=40, 7< f<25, 7<=g<=10, 15<=f+g<=35 and of which saturated magnetic flux density is more than 3KG and less than 9KG is selected, and it is annealed in the magnetic field of more than 5 oersted at temperature 250-550 deg.C and then cooled off at a speed of 50-500 deg.C per hour and used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wound core having good excitation current characteristics and thermal stability, which is formed by winding a high magnetic permeability alloy thin plate.

For magnetic phase shift kq magnetic amplifiers, direct current detectors, magnetic transformers, etc., wound iron cores made of, for example, anisotropic 50 Y1 permalloy, supermaple, oriented silicon, etc. are used. These conventional wound cores are known for their excitation current characteristics and for their rapid rise to saturation. characteristics are required.

In addition, among conventional iron cores, especially 50M1 permanent pin
Permalloy yarn cores such as permalloy have a high total sensitivity of the W component, so their magnetic properties are subject to deterioration due to mechanical strain during transportation, transportation, winding, etc., and the required function as a wound core is deteriorated. However, it has major drawbacks such as the lack of electrical balance. In addition, making these conventional wound core materials requires complex and detailed processes such as melting, ingot-forming, hot rolling, pickling, and cold rolling, making the wound core expensive. I thought it was something.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the above-mentioned conventional techniques, and to provide a wound core that is excellent in excitation current characteristics, strain sensitivity, impact resistance, and thermal stability, and is less expensive.

In order to achieve the above object, the present invention provides a high magnetic permeability alloy thin plate constituting a wound core with a saturation magnetic flux density of 3KG or more9.
It is characterized by using an amorphous alloy with a weight of 1 kg or less.

The inventors of the present application have calculated the formula 1・dT@sit ng (where T is p
・, Mg0a, 5rSBa, Ti5ZrSHf, VS
Wb, Ta, Or) Mo, W% Mns Ru%
Oo, 111, Pa, Ou % Zn) Y N
Oa, Pr %) IdSamlllfu, IGd)
One or more of T1+ % Dy,
d+・+f 10g=100), especially in the above formula, 3-〇≦40.7<t<25
．． A non-2゛J quality alloy that satisfies the following conditions: 7≦g≦10.15≦, t + g≦35, and has a saturation magnetic flux density of 3 KG or more and 9 KG or less, is annealed in a magnetic field and cooled. The present invention was completed by discovering that excellent excitation current characteristics can be obtained by configuring an iron core. In order to make the saturation magnetic flux density 3KG or more and σ or less, the additive gas of the element shown by T is essential, but the reason why it is 3KG or more is that even if the operating temperature of the wound core changes, This is to ensure a sufficient difference between the temperature of the wound core and the temperature of the wound core to reduce variations in characteristics as much as possible, and to effectively carry out heat treatment in a magnetic field.

On the other hand, the reason why the upper limit of the saturation magnetic flux density is set to 9KG is as follows. In other words, in the case of 1-based amorphous alloy thin plates, it is usually relatively easy to obtain a saturation magnetic flux density of 10 KG or more, up to about 17 KG, and some of these have low coercive force and high squareness ratio. , application to transformer cores, wound cores, etc. has been proposed. However, in order to obtain a high saturation magnetic flux density, these amorphous materials with high saturation magnetic flux density must contain a large amount of iron-based M-transfer metal elements and must keep the concentration of metalloid elements, which are amorphous forming elements, low. Although the temperature is high, the crystallization temperature is low, resulting in a lack of thermal stability and difficulty in appropriate heat treatment to fully bring out the properties. Furthermore, in order to obtain high magnetic flux density, additional elements Ika, which improve thermal stability and ms air time characteristics, are added.
The s addition is also controlled, and conversely, because the magnetic flux density is high, the coercive force may be sufficiently reduced.

In the present invention, if the sum of Sl and 1, which are amorphous forming elements, is less than 15 atomic % (hereinafter simply referred to as "deaf") or more than s5, it is difficult to make the amorphous state itself, so 15 to 35
%. Although other metalloid elements such as tjo, y, o, )i, and muL are known as amorphous forming elements, the combination of 81 and 1 is superior in terms of thermal stability and toughness. There is. Even if 01PSG., B1, and Mut are included, the effects of the present invention will not be significantly impaired, but it is desirable that the content be B% or less.

If the content of 1 is less than 75, it is difficult to make it amorphous, and it is 10%.
Above this level, the environmental resistance properties, such as moisture resistance and alkali resistance, are significantly reduced, which is not preferable.

If the content of 81 is less than 7%, the thermal stability will be impaired, and if it exceeds ga, the IO will become more than αlO·, which is not preferable.

Further, it is essential that the total amount of each element indicated by T be contained as an additive element in an amount of 3% or more. Ti, Zr, If, V.

A group of lb, Ta, MO, W, Mi, and Pd improves amorphous formation ability by addition, and Or 5P (L improves corrosion resistance and moisture resistance. YnO#, Pr, Md, 8
! 111u,,G4. Tb.

The 'Dy group improves hardness and increases crystallization temperature and thermal stability. 1., Mg, Oa
, 5r, Ila, and Ru improve the amorphous formation ability, and this tendency is particularly strong when used in combination with other additive elements.
Lice have the effect of lowering He. Of these additional elements T, elements other than small amounts of gn and On are effective in lowering the magnetic flux density, and a total amount of I or more is required in order to reduce the magnetic flux density to 9 KG or less. Amorphous iron core material having the above composition range) is used as a four-sided iron core in a DC or AC magnetic field of 60 z or more.
By annealing at an appropriate temperature between soC and 4BOC and cooling in a magnetic field at a cooling rate of 300C or more per hour,
αOaO・or less% in the chest β0OOGBr/B in l1ia
A core with a low S force of xa-7a% or more and a high angle tuning ratio can be easily obtained. Conventionally, direct current is generally used as the waveform of the magnetic field, but half-wave rectification and alternating current (commercial frequency) also have little effect.

The heat treatment temperature is determined by the optimum temperature force (shifted by 4
If the aoc is exceeded, embrittlement becomes significant, and if it is less than B.00, stress relaxation by annealing is impossible and has little effect. When the cooling rate in the magnetic field exceeds 5OOC/hour, uneven cooling tends to occur and T/Bio (>1) cannot be obtained.

A detailed explanation will be given below based on examples. An example of DC magnetism is shown. As is clear from Table 1, the amorphous alloy core constituting the wound core of the present invention has a super! It shows a low coercive force and a high angle of 11k, which is about the same as or lower than that of alloy, and it is clear that Asahi has comprehensively superior performance that combines the advantages of conventional materials and exhibits good excitation current characteristics. Table 1 As is clear from the above examples, the excitation characteristics of the wound core of the present invention are extremely excellent, and it can be used as a control wound core for magnetic amplifiers, magnetic phase shifters, DC current generators, magnetic modulators, etc. It is excellent. Furthermore, due to the inherent strength and toughness of the amorphous alloy of the core material, the wound core of the present invention has low application sensitivity and is highly reliable with poor impact resistance and thermal stability. .

Procedural amendment (self 1 7.□+51.”s 8n 8th name of C Ming r, h 150@l 11:f-Metal Co., Ltd. representative Norio Kono representative person 1+i Location: 2L Marunouchi, 111-ku, Toshiro, Tokyo
rl1 number 2 number 11・Kegen Co., Ltd. 1111!5 Tsukyo 1
Self-answer for correction of obscurity of No. 8, Ichiban 61 and r*Mari's obscene ame ■ The "Claims" column of the specification is corrected as follows.

[L] A wound core formed by winding a high magnetic permeability alloy thin plate, characterized in that a 16-thread amorphous alloy thin plate having a saturation magnetic flux density of 3 KG or more and 9 KG or less is used as the alloy thin plate.

a In what is stated in claim 11,
The above amorphous alloy has the composition formula lFed T・81f Bg
(In the formula, T is B@s Mgz OIL% 8r, 1m
, 'r1, Zr, nr, V% Mb, T&Qr,
Mo, W, Ma1%Ru, Oo, Summeri, Pd
) Ou, zn, YOs, Pr, lid, 8m
, mu, Gd, Tb, Dy or JIIIi or higher, d100f 10g -100,3≦
e≦40,? < f (!15,'7≦6≦10.1
A wound iron core characterized in that it exhibits a failure in the range 5≦f≦35).

a In the claim 1a or gum, the amorphous alloy is annealed in a direct current or alternating current magnetic field of S Oersted or higher at a step of 250C to 550C, and the amorphous alloy is annealed every hour! From IOC! A wound core obtained by cooling in a magnetic field at a cooling rate of IoOC. ''l The description in the ``Detailed Description of the Invention'' column of the specification is corrected as follows.

(5) Replace “450C” on page 4, line 4 of the specification with “5aol”
:: Correct to J.

(2) ``300'' in the 6th line of the same page of the same book is corrected to ``500.'' The above procedure is amended by the case of the Director-General of the IS Correction Agency dated 584-m-11, published in 1982. Patent Application No. 38961, Invention. Name Tani Tetsu Shinpo II - Famous things to write I1 Which relationship Patent applicant address 2-1-2 Marunouchi, Chiyoda-ku, Tokyo Name (5
08) The description in the "Detailed Description of the Invention" column of the Statement of Contents of Amendment in the "Detailed Description of the Invention" column of Hitachi Metals Co., Ltd. Mei 1 is corrected as follows.

Note 1, [Additional gas essential 1] on page 4, line 4 of the specification is corrected to ``Additional gas is essential.''

2. In the same book, page 5, line 7, ``There was something I could do.'' was revised to ``There was something I couldn't do.''

From [

Claims (1)

[Scope of Claims] L A wound iron core formed by winding a high magnetic permeability alloy thin plate.As the alloy thin plate, a 1-based amorphous alloy thin plate having a saturation magnetic flux density of 3 KG or more and 9 KG or less is used. Characteristic wound core. 2. Claim 113, wherein the amorphous alloy has a compositional formula of 1.dT.8if Bg (wherein T
is Ba, Mg% oa, Sr, Ba, Ti, Zr,
Hf, hV, Wb, Ta. Or, Mo, W SMn1Ru, Oo, lii,
Pd, Gu, Zn, Y108, Pr, INd,
8m, mu, Gd1Tb, 1 or more of Dy or 2if1, d + @ + t + g-1
0(J, s≦・≦407(f(25, 7≦g≦To, 15
≦t+g≦35). & Claims 1 or 2, wherein the amorphous alloy is annealed in a direct current or alternating current Mi magnetic field of 6 degrees or more at a temperature of 5oC to 500C per hour. A wound iron core characterized in that it is obtained by cooling in a magnetic field in a continuous cooling layer.