CN203299362U - Saturation magnetization intensity measuring device - Google Patents
Saturation magnetization intensity measuring device Download PDFInfo
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- CN203299362U CN203299362U CN2013203620045U CN201320362004U CN203299362U CN 203299362 U CN203299362 U CN 203299362U CN 2013203620045 U CN2013203620045 U CN 2013203620045U CN 201320362004 U CN201320362004 U CN 201320362004U CN 203299362 U CN203299362 U CN 203299362U
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- 230000005415 magnetization Effects 0.000 title claims abstract description 40
- 230000005291 magnetic effect Effects 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000003302 ferromagnetic material Substances 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005307 ferromagnetism Effects 0.000 abstract 4
- 238000005259 measurement Methods 0.000 description 18
- 230000007246 mechanism Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 239000011553 magnetic fluid Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a saturation magnetization intensity measuring device. The saturation magnetization intensity measuring device comprises a magnetic field generation device and a magnetic force measuring device, wherein the magnetic force measuring device is a force measuring meter, a force measuring end of the force measuring meter and a ferromagnetism material sample to be measured are connected through a hanging band, the magnetic field generation device comprises two Maxwell coils and two Helmholtz coils which form two pairs of magnetic field coils, any two coils are parallel and coaxial, a uniform gradient magnetic field is generated, and the ferromagnetism material sample to be measured is placed at a central area of the two pairs of magnetic field coils of the magnetic field generation device. The two pairs of Maxwell coils and Helmholtz coils provide the uniform gradient magnetic field, and saturation magnetization intensity of a ferromagnetism material object can be precisely measured. The saturation magnetization intensity measuring device is simple, is convenient to operate, has low manufacturing cost and can meet requirements for measuring saturation magnetization intensity of different ferromagnetism materials.
Description
Technical field
The utility model relates to a kind of material property measurement mechanism, particularly relates to a kind of magnetic property measurement mechanism of magnetisable material, belongs to material property detection technique field.
Background technology
Saturation magnetization is a characteristic of ferromagnetic material.Under the effect of ferromagnetic material outside magnetic field, inner magnetic field intensity can increase along with the increase of external magnetic field intensity; To a certain extent the time, the magnetization of ferromagnetic material inside just remains on a stable numerical value when the external magnetic field strength increase, and at this moment ferromagnetic material has just reached the saturated magnetization state.This stable magnetization numerical value is called the saturation magnetization of this material.
Saturation magnetization M
SBe important physical property parameter of ferromagnetic material, it is the important value of research material inner structure and physics thereof, chemical characteristic.Measurement of species saturation magnetization M
SMethod have a variety ofly, common are inductive electromagnetic method and force analysis method.Inductive electromagnetic method is to determine M by measuring sample interior or sample magnetic flux on every side
SValue; The force analysis method is to measure M by sample stressed size in gradient magnetic
SValue, as sedimentation balance method commonly used, ring title method.This kind measuring method easily is subject to external environment influence, and error component is more, and therefore, measured saturation magnetization value has certain deviation with reality.Measurement mechanism generally adopts vibrating sample magnetometer accurately, and it can draw curve automatically, and again accurately and reliably, but the instrument price is very expensive, generally is difficult to obtain.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of measurement mechanism of saturation magnetization is provided, by Maxwell-Helmholtz's biconjugate coil, provide uniform gradient magnetic field, material saturation magnetization to ferrimagnet is accurately measured, its device is simple, easy to operate, and cheap for manufacturing cost, can meet the measurement of different ferromagnetic material saturation magnetizations.
For reaching foregoing invention, create purpose, the utility model adopts following technical proposals:
A kind of measurement mechanism of saturation magnetization, comprise field generator for magnetic and mgnetic observations device, the mgnetic observations device is dynamometer, between the dynamometry end of dynamometer and ferrimagnet sample to be measured, by suspension wire, connect, field generator for magnetic forms the biconjugate field coil by two circle Maxwell's coils and two circle Helmholtz coilss, setting parallel to each other and coaxial between any two circle coils, produce the magnetic field of uniform gradient, ferrimagnet sample to be measured is positioned over to the central area of the biconjugate field coil of field generator for magnetic.
As the preferred a kind of technical scheme of the utility model, two circle Helmholtz coilss are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss respectively, the diameter of Helmholtz coils is greater than Maxwell's coil, and namely Maxwell's coil is enclosed within Helmholtz coils inside non-contactly.
As the preferred another kind of technical scheme of the utility model, two circle Helmholtz coilss are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss respectively, the diameter of Helmholtz coils is less than Maxwell's coil, and namely Maxwell's coil is enclosed within the Helmholtz coils outside non-contactly.
Pass to respectively in up and down that size is identical, the electric current of opposite direction in two circle Maxwell's coils, in the coil central area, produce 10
-2The uniform magnetic field gradient of T/m-1T/m; In up and down, pass to respectively all identical electric currents of size, direction in two circle Helmholtz coilss, in the coil central area, produce the uniform magnetic field intensity of 200Gs-1000Gs.
The utility model compared with prior art, has following substantive distinguishing features and advantage:
1. the utility model is by the uniform gradient magnetic field of uniform gradient magnetic field device by Maxwell-Helmholtz's biconjugate coil generation, make the ferromagnetic material magnetized state that reaches capacity, regulate electric current this moment makes magnetizing force offset its gravity, and then calculates its saturation magnetization M in conjunction with every physical parameter
S, simple to operate, be easy to realize, can meet the measuring saturated magnetization of different ferromagnetic materials.
2. the measurement mechanism designs simplification of the utility model saturation magnetization, manufacturing cost is lower, and is easy to use.
The accompanying drawing explanation
Fig. 1 is the structural representation of the measurement mechanism of the utility model embodiment mono-saturation magnetization.
Fig. 2 is the structural representation of the measurement mechanism of the utility model embodiment bis-saturation magnetizations.
Embodiment
Preferred embodiment accompanying drawings of the present utility model is as follows:
Embodiment mono-:
in the present embodiment, referring to Fig. 1, a kind of measurement mechanism of saturation magnetization, comprise field generator for magnetic and mgnetic observations device, the mgnetic observations device is dynamometer 1, between the dynamometry end of dynamometer 1 and ferrimagnet sample 3 to be measured, by suspension wire 2, connect, field generator for magnetic forms the biconjugate field coil by two circle Maxwell's coils 4 and two circle Helmholtz coilss 5, setting parallel to each other and coaxial between any two circle coils, produce the magnetic field of uniform gradient, ferrimagnet sample 3 to be measured is positioned over to the central area of the biconjugate field coil of field generator for magnetic.In the present embodiment, referring to Fig. 1, two circle Helmholtz coilss 5 are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils 4 are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils 4 are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss 5 respectively.In the present embodiment, referring to Fig. 1, the diameter of Helmholtz coils 5 is greater than Maxwell's coil 4, and namely Maxwell's coil 4 is enclosed within Helmholtz coils 5 inside non-contactly.
The measurement mechanism of the present embodiment saturation magnetization realizes that the measuring principle of saturation magnetization is as follows:
Helmholtz coils 5 produces enough large magnetic field and makes the ferrimagnet sample 3 to be measured magnetized state that reaches capacity in its hub of a spool zone, Maxwell's coil 4 produces the uniform magnetic field gradient in same position, and ferrimagnet sample 3 to be measured can be subject to a magnetic volume power opposite with its gravity in the central area of biconjugate coil:
Wherein, F
MFor the suffered magnetizing force of unit volume ferrimagnet sample 3 to be measured, Ms is the saturation magnetization of ferrimagnet sample 3 to be measured, the magnetic field gradient that dB/dh provides for Maxwell's coil 4.
Regulate the electric current of Maxwell's coil 4, when the measured value of dynamometer 1 hour, when namely the suffered magnetizing force size of ferrimagnet sample 3 to be measured equated with its gravity, saturation magnetization was satisfied at this moment:
Wherein, ρ is the density of ferrimagnet sample 3 to be measured, and g is acceleration of gravity, and dB/dh is magnetic field gradient that this moment, Maxwell's coil 4 provided.
In conjunction with above-mentioned formula, can calculate the saturation magnetization of ferrimagnet sample 3 to be measured.
It is the magnetic susceptibility such as ferrous material, magnetic fluid much larger than the measurement of the saturation magnetization of 1 material that the measurement mechanism of the present embodiment saturation magnetization especially is suitable for ferromagnetic material.
In the present embodiment, ferromagnetic material 3 adopts water-based magnetic fluid, and its density p is 1.18 * 10
3Kg/m
3At Helmholtz coils 5, pass into the 80A electric current, in the central area of coil, can produce the uniform magnetic field intensity of 567Gs, the magnetized state so that magnetic fluid reaches capacity; Then, regulate the electric current in Maxwell's coil 4, when the magnetic field gradient of its generation reaches 0.73T/m, the reading minimum on dynamometer 1, close to 0, magnetic fluid is subject to magnetizing force and offsets its gravity fully at this moment, meets formula
, the saturation magnetization that can obtain water-based magnetic fluid in conjunction with above-mentioned parameter is about 200Gs.
Embodiment bis-:
The present embodiment and embodiment mono-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 2, the diameter of Helmholtz coils 5 is less than Maxwell's coil 4, be that Maxwell's coil 4 is enclosed within Helmholtz coils 5 outsides non-contactly, the measurement mechanism of employing the present embodiment saturation magnetization may reach the accurate measurement of the saturation magnetization of a pair of ferromagnetic material 3 of embodiment equally.
The above is illustrated the utility model embodiment by reference to the accompanying drawings; but the utility model is not limited to above-described embodiment; can also make multiple variation according to the purpose that utility model of the present utility model is created; the change of making under all Spirit Essences according to technical solutions of the utility model and principle, modification, substitute, combination, simplify; all should be the substitute mode of equivalence; as long as meet structure and aufbauprinciple for the measurement mechanism of the utility model saturation magnetization, all belong to protection domain of the present utility model.
Claims (4)
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| CN2013203620045U CN203299362U (en) | 2013-06-24 | 2013-06-24 | Saturation magnetization intensity measuring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548922A (en) * | 2015-12-15 | 2016-05-04 | 河海大学 | Method for determining saturated magnetization intensity of oriented silicon steel plate accurately |
| CN107121649A (en) * | 2017-03-29 | 2017-09-01 | 金华职业技术学院 | A kind of method of use magnetometer survey magnetic molecule cluster magnetic moment |
| CN109407020A (en) * | 2018-12-18 | 2019-03-01 | 中国工程物理研究院流体物理研究所 | A kind of magnetic axis measuring system of the solenoid coil based on suspension method |
| CN110824393A (en) * | 2019-09-04 | 2020-02-21 | 横店集团东磁股份有限公司 | Magnetic flux measuring device and measuring method thereof |
| CN112345986A (en) * | 2020-10-12 | 2021-02-09 | 天津科技大学 | Device and method for measuring saturation magnetization of magnetic particles |
| CN113985332A (en) * | 2021-11-18 | 2022-01-28 | 北京交通大学 | A magnetic liquid saturation magnetization comparison device |
| CN114898966A (en) * | 2022-07-13 | 2022-08-12 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
-
2013
- 2013-06-24 CN CN2013203620045U patent/CN203299362U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548922A (en) * | 2015-12-15 | 2016-05-04 | 河海大学 | Method for determining saturated magnetization intensity of oriented silicon steel plate accurately |
| CN105548922B (en) * | 2015-12-15 | 2018-06-19 | 河海大学 | A kind of accurate method for measuring grain-oriented Si steel sheet saturation magnetization |
| CN107121649A (en) * | 2017-03-29 | 2017-09-01 | 金华职业技术学院 | A kind of method of use magnetometer survey magnetic molecule cluster magnetic moment |
| CN107121649B (en) * | 2017-03-29 | 2023-10-10 | 金华职业技术学院 | A method for measuring the magnetic moment of magnetic molecular clusters using a magnetometer |
| CN109407020A (en) * | 2018-12-18 | 2019-03-01 | 中国工程物理研究院流体物理研究所 | A kind of magnetic axis measuring system of the solenoid coil based on suspension method |
| CN109407020B (en) * | 2018-12-18 | 2023-10-20 | 中国工程物理研究院流体物理研究所 | Magnetic axis measurement system of solenoid coil based on suspension wire method |
| CN110824393A (en) * | 2019-09-04 | 2020-02-21 | 横店集团东磁股份有限公司 | Magnetic flux measuring device and measuring method thereof |
| CN112345986A (en) * | 2020-10-12 | 2021-02-09 | 天津科技大学 | Device and method for measuring saturation magnetization of magnetic particles |
| CN113985332A (en) * | 2021-11-18 | 2022-01-28 | 北京交通大学 | A magnetic liquid saturation magnetization comparison device |
| CN113985332B (en) * | 2021-11-18 | 2023-06-09 | 北京交通大学 | Magnetic liquid saturation magnetization intensity comparison device |
| CN114898966A (en) * | 2022-07-13 | 2022-08-12 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
| CN114898966B (en) * | 2022-07-13 | 2023-09-26 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
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