CN203688790U - Magnetostriction and magnetism measurement frame of soft magnetic thin belt - Google Patents
Magnetostriction and magnetism measurement frame of soft magnetic thin belt Download PDFInfo
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- CN203688790U CN203688790U CN201320659692.1U CN201320659692U CN203688790U CN 203688790 U CN203688790 U CN 203688790U CN 201320659692 U CN201320659692 U CN 201320659692U CN 203688790 U CN203688790 U CN 203688790U
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- 238000005259 measurement Methods 0.000 title claims abstract description 41
- 230000005389 magnetism Effects 0.000 title claims abstract description 35
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000005300 metallic glass Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
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- 230000035699 permeability Effects 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 229910000952 Be alloy Inorganic materials 0.000 description 1
- 206010007247 Carbuncle Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
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Abstract
The utility model relates to a magnetostriction and magnetism measurement frame of a soft magnetic thin belt. The magnetostriction and magnetism measurement frame comprises a support frame, an upper sample holder, a solenoid, a pair of magnet yokes, a lower sample holder, a reflector and a laser interferometer. The upper sample holder and the lower sample holder are arranged in a vertical direction, and used for holding a sample. The upper sample holder is supported on the support frame. The pair of magnet yokes consists of a left magnet yoke and a right magnet yoke in an opposite way which are arranged separably and closably in the inner part of the support frame. The magnet yokes are closed to hold the sample when in magnetic measurement. The solenoid is held in the space formed by the left magnet yoke and the right magnet yoke and surrounds the sample. The reflector is arranged at a lower end of the lower sample holder. The laser interferometer and the reflector are arranged oppositely and have a gap therebetween on an anti-vibration table. The laser beam penetrates the gap for measuring the stretching amount generated in the magnetization process. According to the utility model, the sample is arranged vertically, measurement accuracy and efficiency are increased; meanwhile, magnetostriction is measured and also magnetism is measured.
Description
Technical field
The utility model relates to a kind of magnetostriction of soft magnetism strip in razor-thin and the measurement frame of magnetic.
Background technology
Soft magnetism strip in razor-thin, its thickness, at 0.015～0.25mm, comprises amorphous alloy strips, oriented silicon steel strip in razor-thin etc.As amorphous metal or non-crystaline amorphous metal (the claiming again metallic glass) band of a kind of typical species of soft magnetism strip in razor-thin, be alloy from liquid (or gaseous state) rapidly cooling (10
6dEG C/sec.) time, the state of aggregation that at room temperature retains liquid atomic lack of alignment because having little time crystallization forms.Just because of the unordered atomic arrangement structure of amorphous long-range, therefore compared with traditional crystalline material, non-crystaline amorphous metal shows superelevation than excellent properties such as strong, large elastic deformability, abrasion resistant and corrosion resistant, low iron loss and high magnetic permeabilities, thereby in widespread attention and become one of current most active materialogy research field.Aspect magnetic, compared with siliconized plate, Fe-based amorphous alloy band has greater advantage at aspects such as iron loss, magnetic permeability and excitatory power, particularly its iron loss is lower, it is only 1/3～1/5 of siliconized plate, thereby manufacture substation transformer with its substituted for silicon steel disc, can make the open circuit loss of substation transformer reduce by 60～80%; But on the other hand, the magnetostriction coefficient of Fe-based amorphous alloy band (is about 27 × 10
-6), be that oriented silicon steel disc magnetostriction coefficient (is about 5 × 10
-6) 5 times, this has the adverse effect of aggravation to amorphous transformer noise.Therefore, need to the magnetostriction coefficient of Fe-based amorphous alloy band be detected, assesses and be controlled.In addition, because amorphous alloy strips is very thin and have flexibility, horizontal inserted sheet difficulty, the detection block (EPSTEIN frame or horizontal monolithic frame) that is difficult to adopt silicon steel conventional is carried out magnetic survey; All used ring sample to carry out magnetic survey in the past, and needed strip winding and coiling, and wasted time and energy, this just need to improve magnetic survey frame.Other soft magnetism strip in razor-thin is as also similar with the situation of Fe-based amorphous alloy band in oriented silicon steel strip in razor-thin etc.
Document " (SAMR) measuring method is rotated at the little angle of amorphous wire magnetostriction coefficient " (physical testing, the 25th the 3rd phase of volume, in May, 2007), document " magnetostriction apparatus " (China Science & Technology University's journal, the 20th the 1st phase of volume, March nineteen ninety) introduce respectively with little angle rotation measuring amorphous wire, the method of amorphous ribbon saturation magnetostriction, its principle is identical: additionally on parallel amorphous wire or strip in razor-thin surface be enough to make it magnetization to saturated bias direct current magnetic field H dc and a horizontal alternating magnetic field Hac, magnetic moment does small angle oscillation under alternating field effect, if longitudinally add tension stress σ, angle of oscillation will change, the size of its variation is relevant with saturation magnetostriction constant λ s with σ value, can keep corner constant by changing Hdc, thereby calculate saturation magnetostriction constant:
in formula, (Hdc)
0for the size of an external carbuncle σ=0 o'clock vertical Hdc, (Hdc)
σvertical Hdc size when keeping magnetic moment corner constant under corresponding force σ, Ms is the saturation magnetization of material, is the inherent characteristic of material, and its numerical value need to be measured by vibrating sample magnetometer.Adopt and need in this way more, the complex operation of variable controlled, and can only measure saturation magnetostriction value λ s, can not measure the magnetostriction value under the different magnetization.Document " magnetostriction apparatus " (China Science & Technology University's journal, the 20th the 1st phase of volume, March nineteen ninety) also introduce a kind of high temperature magnetostriction apparatus that adopts the rear displacement of laser interferometer test sample product magnetization, vertical layout, but this device can not carry out Magnetic Measurement.
Summary of the invention
The purpose of this utility model is to provide a kind of magnetostriction of soft magnetism strip in razor-thin and the measurement frame of magnetic, can solve soft magnetism strip in razor-thin is difficult to insert field coil neutralization levels without bracket and places the shortcoming that easily produces unstable phenomenon while measuring displacement and affect measurement result, and can solve for Magnetic Measurement must strip winding while adopting ring sample to measure, coiling, time-consuming when requiring great effort again and adopting EPSTEIN frame or horizontal monolithic frame sample insert difficult problem, and can bring convenience and improve Magnetic Measurement efficiency to Magnetic Measurement.
The magnetostriction of soft magnetism strip in razor-thin of the present utility model and the measurement frame of magnetic, with magnetostriction and the magnetic property of alternating magnetism measurement main frame conjunction measuring soft magnetism strip in razor-thin, described measurement frame is placed on a vibrationproof platform and comprises: bracing frame, upper sample holder, solenoid, pair of magnetic yoke, lower sample holder, reflecting optics and laser interferometer, described upper sample holder and described lower sample holder are vertically arranged, for clamped sample, described upper sample holder is bearing on support frame as described above, described pair of magnetic yoke is made up of relative left yoke and right yoke, be arranged in the inner space of support frame as described above separable and closedly, in the time carrying out magnetic survey, closure is to clamp sample, described solenoid is contained in a left side, in the space that right yoke forms, and around described sample, described reflecting optics is positioned at the lower end of described lower sample holder, described laser interferometer is relative with described reflecting optics gap and be placed on described vibrationproof platform, laser beam is through this gap, for measuring the stroke that sample produces in magnetic history.
Described pair of magnetic yoke is manufactured by the good orientation silicon steel of magnetoconductivity or mild steel material.
The beneficial effects of the utility model are: compatible good, the magnetostriction that both can measure soft magnetism strip in razor-thin (thickness 0.015～0.25mm), can measure again its magnetic property; Owing to having adopted vertical setting out method, avoid strip in razor-thin to be difficult to insert the phenomenon of field coil; Adopt the lower end mode that the lightweight sample clamper with reflecting optics is snugly fitted into punching soft magnetism strip in razor-thin sample, the mirror surface of laser is larger, has avoided the difficulty of laser alignment before measuring, focusing.
Brief description of the drawings
The magnetostriction of soft magnetism strip in razor-thin of an embodiment of Fig. 1 the utility model and the schematic diagram of the measurement frame of magnetic, measure magnetostriction shown in figure;
Fig. 2 is the inner schematic diagram that forms uniform magnetic field of energising long straight solenoid;
Fig. 3 is the schematic diagram of laser interferometer measurement sample stroke in Fig. 1 embodiment;
Fig. 4 is the schematic diagram that Fig. 1 embodiment carries out Magnetic Measurement.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to following embodiment, the spirit that those skilled in the art should embody from following embodiment is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.
The magnetostriction of soft magnetism strip in razor-thin of the present utility model and the measurement frame of magnetic, with magnetostriction and the magnetic property of alternating magnetism measurement main frame (not shown) conjunction measuring soft magnetism strip in razor-thin.As shown in Figure 1 and Figure 4, this measurement frame is placed on a vibrationproof platform 11, and comprises: bracing frame 2, upper sample holder 1, solenoid 5, pair of magnetic yoke comprise left yoke 10 and right yoke 4, lower sample holder 6, reflecting optics 7 and laser interferometer 9.
Wherein, upper sample holder 1 and lower sample holder 6 are for clamped sample 3, and lower sample holder 6 is lightweight sample clampers.Upper sample holder 1 is bearing on bracing frame 2.Left yoke 10 and right yoke 4 are relatively also arranged in the inner space of bracing frame 2 separablely and closed, and solenoid 5 is contained in the space that left and right yoke 10,4 forms, and around described sample 3.Reflecting optics 7 is positioned at the lower end of lower sample holder 6.Laser interferometer 9 is relative with reflecting optics 7 and be placed on vibrationproof platform 11.
Measurement frame of the present utility model is measured main frame with alternating magnetism and is coordinated, and measurable soft magnetism strip in razor-thin is of a size of: thickness 0.015～0.30mm, width: 30～300mm, length: 100～500mm.This measurement frame is placed on vibrationproof platform 11, avoids the impact of ambient vibration on magnetostriction measurement.
Solenoid 5 provides uniform magnetic field as the basic building block of magnetization sample, as Fig. 2, according to BiotSavart's law, in long straight solenoid, on axis, the magnetic field intensity of any point is H=nI (cos β 1-cos β 2)/2, wherein, the n-unit length solenoid coil number of turn, n=N/L; The N-solenoid coil number of turn, L-solenoid length, D-solenoid diameter, I-leads to the strength of current on coil enameled conducting wire.When straight solenoid endless (being L > > D), cos β 1-cos β 2 ≈ 2, can obtain approximate uniform magnetic field, and magnetic field intensity is H=nI=NI/L.
Pair of magnetic yoke is that left yoke 10, right yoke 4 can be driven to produce to open and close by certain mechanical hook-up (not shown) and separate and closing motion, yoke is generally manufactured by the good material such as orientation silicon steel, mild steel of magnetoconductivity, specific requirement should be with reference to the regulation of IEC60404-3:2002 annex A, or ASTM A932/A932M – 01.In the time carrying out magnetic survey, left and right yoke closure is clamped sample 4, makes the magnetic line of force be evenly distributed, form good magnetic loop, thereby makes two ends of sample 3 also have uniform Distribution of Magnetic Field.
As shown in Figure 3, laser interferometer 9 is mainly used to measure the stroke Δ L that sample 3 (length is L) produces in magnetic history, laser interferometer 9 comprises sensing head 12, leaves the focal length L of the focal plane P of tested object 14 by calibration screw 14 capable of regulating sensing heads 12.
When interferometer 9 is air with the gap of the mirror surface of reflecting optics 7, and in the situation of vertical incidence, interference fringe level time K has following relation with measurement spacing: 2d=K λ, wherein λ is optical maser wavelength.In the time of the flexible △ L of sample, interferometer measurement distance is become thereupon:
therefore, △ L=△ K (λ/2).If interference fringe two greatly between distance be S, because sample extends, to cause move of stripe value be △ S, △ K=△ S/S;
obtain move of stripe value △ S and can obtain flexible value △ L, thereby obtain magnetostriction value △ L/L.
Concrete operations mode of the present utility model is as follows: while 1) carrying out magnetostriction measurement, as shown in Figure 1, range of size is the soft magnetism strip in razor-thin sample 3 of thickness: 0.015～0.25mm, width: 30～300mm, length: 100～500mm, in the longitudinal direction, be contained on sample holder 1 after lower punching two ends, then sample is put into solenoid 5; Lightweight sample clamper 6 with reflecting optics 7 is snugly fitted into the lower end of sample 3.In the time carrying out magnetostriction measurement, left and right yoke 10,4 is in open mode, galvanization excitation in solenoid 5, and sample 3 produces magnetostriction and upper and lower vibration.The magnetostrictive displacement amount that sample 3 produces is measured by high-precision laser interferometer 9.Measure completely, turn off the laser beam 8 of laser interferometer 9, unclamp lightweight sample clamper 6, unclamp sample holder 1, take out soft magnetism strip in razor-thin sample 3.
While carrying out Magnetic Measurement, as shown in Figure 4, soft magnetism strip in razor-thin sample 3 range of size are thickness: 0.015～0.25mm, width: 30～300mm, length: 100～500mm, in the longitudinal direction, be contained on sample holder 1 after lower punching two ends, then sample 3 are put into solenoid 5; Left and right yoke, 10,4 is closed up, clamp soft magnetism strip in razor-thin sample 3.Galvanization excitation in solenoid 5, carries out the isoparametric measurement of iron loss and magnetic strength.Measure completely, make left and right yoke 10,4 in open mode, unclamp sample holder 1, take out soft magnetism strip in razor-thin sample 3.
In sum, the magnetostriction of soft magnetism strip in razor-thin of the present utility model and the measurement frame of magnetic, can overcome soft magnetism strip in razor-thin is difficult to insert field coil neutralization levels without bracket and places the shortcoming that easily produces unstable phenomenon while measuring displacement and affect measurement result, and can solve for Magnetic Measurement must strip winding while adopting ring sample to measure, coiling, time-consuming when requiring great effort again and adopting EPSTEIN frame or horizontal monolithic frame sample insert difficult problem, and can bring convenience and improve Magnetic Measurement efficiency to Magnetic Measurement.The utility model compatibility is good, both can measure the magnetostriction of soft magnetism strip in razor-thin (thickness 0.015～0.25mm), can measure again its magnetic property; Owing to having adopted vertical setting out method, avoid strip in razor-thin to be difficult to insert the phenomenon of field coil; Adopt the lower end mode that the lightweight sample clamper with reflecting optics is snugly fitted into punching soft magnetism strip in razor-thin sample, the mirror surface of laser is larger, has avoided the difficulty of laser alignment before measuring, focusing.
Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (2)
1. the magnetostriction of a soft magnetism strip in razor-thin and the measurement frame of magnetic, magnetostriction and magnetic property with alternating magnetism measurement main frame conjunction measuring soft magnetism strip in razor-thin, described measurement frame is placed on a vibrationproof platform (11), it is characterized in that, described measurement frame comprises: bracing frame (2), upper sample holder (1), solenoid (5), pair of magnetic yoke (4,10), lower sample holder (6), reflecting optics (7) and laser interferometer (9), described upper sample holder (1) and described lower sample holder (6) are vertically arranged, for clamped sample (3), described upper sample holder (1) is bearing on support frame as described above (2), described pair of magnetic yoke is made up of relative left yoke (10) and right yoke (4), be arranged in the inner space of support frame as described above (2) separable and closedly, in the time carrying out magnetic survey, closure is to clamp sample (3), described solenoid (5) is contained in a left side, right yoke (10, 4) in the space forming, and around described sample (3), described reflecting optics (7) is positioned at the lower end of described lower sample holder (6), described laser interferometer (9) is relative with described reflecting optics (7) gap and be placed on described vibrationproof platform (11), laser beam (8) is through this gap, be used for measuring the stroke that sample (3) produces in magnetic history.
2. the magnetostriction of soft magnetism strip in razor-thin according to claim 1 and the measurement frame of magnetic, is characterized in that, described pair of magnetic yoke (10,4) is manufactured by the good orientation silicon steel of magnetoconductivity or mild steel material.
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| CN201320659692.1U CN203688790U (en) | 2013-10-24 | 2013-10-24 | Magnetostriction and magnetism measurement frame of soft magnetic thin belt |
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| CN201320659692.1U CN203688790U (en) | 2013-10-24 | 2013-10-24 | Magnetostriction and magnetism measurement frame of soft magnetic thin belt |
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| CN203688790U true CN203688790U (en) | 2014-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983414A (en) * | 2018-08-30 | 2018-12-11 | 京东方科技集团股份有限公司 | Optical mirror, optical mirror system and exposure machine |
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2013
- 2013-10-24 CN CN201320659692.1U patent/CN203688790U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983414A (en) * | 2018-08-30 | 2018-12-11 | 京东方科技集团股份有限公司 | Optical mirror, optical mirror system and exposure machine |
| CN108983414B (en) * | 2018-08-30 | 2024-01-30 | 京东方科技集团股份有限公司 | Optical reflector, optical reflector system and exposure machine |
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| GR01 | Patent grant | ||
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Granted publication date: 20140702 |