CN102590769A - Magnetic force property measuring method and magnetic force property measuring device for ferromagnetic material - Google Patents
Magnetic force property measuring method and magnetic force property measuring device for ferromagnetic material Download PDFInfo
- Publication number
- CN102590769A CN102590769A CN2012100109467A CN201210010946A CN102590769A CN 102590769 A CN102590769 A CN 102590769A CN 2012100109467 A CN2012100109467 A CN 2012100109467A CN 201210010946 A CN201210010946 A CN 201210010946A CN 102590769 A CN102590769 A CN 102590769A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnetic material
- determinand
- strong
- force property
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 262
- 238000000034 method Methods 0.000 title abstract description 8
- 239000003302 ferromagnetic material Substances 0.000 title abstract 9
- 239000000696 magnetic material Substances 0.000 claims abstract description 81
- 230000004907 flux Effects 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000003556 assay Methods 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 8
- 230000005307 ferromagnetism Effects 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 230000009021 linear effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910017110 Fe—Cr—Co Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Landscapes
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The present invention provides a magnetic force property measuring method and a magnetic force property measuring device. Even an Nd series ferromagnetic material with a large retentiveness, also can simply measure fluctuation of property of the magnetic material with a low cost through a small-sized device, and can judge a magnet with a poor thermal reducing magnetic property. The magnetic force property measuring device comprises: a magnetic field generation mechanism used for injecting magnetic flux generated by the magnetic field generation mechanism into the ferromagnetic material which is used as a measured object, in order to measure the magnetic force property of the ferromagnetic material; a magnetic pole of the magnetic field generation mechanism, which is configured with the ferromagnetic material used as the measured object with a gap therebetween; a load delivering mechanism connected with the ferromagnetic material used as the measured object; and a load sensor used for measuring a force applied on the ferromagnetic material which is used as the measured object and delivered by the load delivering mechanism when the ferromagnetic material passes through the magnetic flux, wherein an area of a front end part of the magnetic pole of the magnetic field generation mechanism is smaller than an area of the ferromagnetic material which is used as the measured object.
Description
Technical field
The present invention relates to the determination techniques of the hot demagnetize characteristic isodynamic characteristic of strong magnetic material.
Background technology
In the high output motor that in automobile etc., uses, generally use the big ferromagnetism body (permanent magnet) of coercive force such as Nd series to attempt to increase the output of motor.But the big ferromagnetism body of coercive forces such as known Nd series is because heat and magnetic force property deterioration.For example, in the motor of having assembled the ferromagnetism body, when driving motor, rise, the position of the irreversible deterioration of magnetic force property takes place owing to the eddy current that in direct motor drive, takes place in motor interior causes the temperature of ferromagnetism body.Therefore, the output deterioration of motor.Therefore, for example in the manufacture process of motor, even select the also few ferromagnetism body of at high temperature hot deterioration to become extremely important.The ferromagnetism body that in motor etc., uses magnetizes to the magnet sintered body and is used.Especially, the middle big magnetic field that needs of magnetizing of Nd series of magnets sintered body is in order to magnetize the magnet sintered body and to need the big magnetic field more than the 15k oersted fully.
Among Figure 13, an example of the cross-section structure after expression Nd series of magnets sintered body magnetizes.When the material of the magnet sintered body of ferromagnetism body or the situation that magnetizes are bad, there is the position of the many magnetic regions state that is not magnetized shown in figure 13.When such ferromagnetism body is a starting point with position, many magnetic regions when temperature rises through heat, thereby the magnetization characteristic deterioration is propagated at position, many magnetic regions.Therefore, remove the many ferromagnetism bodies in such position, many magnetic regions, become the important factor of the quality of the magnetic force property that is used to improve product from product.
Technology as estimating about the magnetic force property of ferromagnetism body has patent documentation 1.In this communique; Shown in figure 12 following content being disclosed: flows through the magnetic flux that electric current takes place in the coil 103 through determinand 105 is infused in; Be determined at the B-H characteristic that produces in the determinand through B coil 1201 and H coil 10202, carry out the magnetic force property of the determinand 105 of strong magnetic material such as permanent magnet thus and measure.In this case, when between the magnetic pole 107 of electromagnet and the determinand 105 space being arranged, because the demagnetizing field that takes place at the face that magnetizes of determinand 105 produces error in causing measuring.In order to reduce this space as far as possible; The strainmeter of the pressure transducer of thin thickness is set on the surface of contact of determinand and magnetic pole; Via extensometry device and transducer and detected detection signal feeds back to drive motor, control imposes on the magnetic force property determinator of the pressure of determinand automatically with the output of strainmeter.
In addition; In patent documentation 2, disclosing electromagnet through hollow applies certain hour magnetic field to the sample on the side's that is suspended on balance the arm beam of steelyard and acts on magnetic force; Detect the amplitude of the free vibration of the balance after subdue in magnetic field in the laser micro small distance, according to coming assay method magnetic susceptibility, beyond the B-H characteristic of working sample with the relation of the magnetic field intensity that applies.
In magnetic force property assay method, when measuring the big magnetic materials such as Nd series of coercive force, need to produce the electromagnet in big magnetic field, so need big equipment based on the magnet of B-H characteristic like patent documentation 1.In addition, the adjustment before measuring needs the time, does not measure simply so be suitable for low cost.And Hall element isodynamic sensor can not use in the high temperature more than 120 ℃.The Nd series of magnets follows temperature to rise, and magnetic force property near 100 degree hot demagnetize takes place, and is changed to normal magnetic at about 300 degree of Curie temperature from the ferromagnetism body.The result of developing material in recent years, the temperature that the hot demagnetize that causes because of heating begins changes to high temperature side, is difficult to come directly to measure this hot demagnetize phenomenon through Hall element isodynamic sensor.
In addition; The method of patent documentation 2; When not having the external magnetic field, do not have magnetic; Be applicable to when applying magnetic field mensuration, but can not measure the magnetic force property that inside such as permanent magnet are in the strong magnetic material of the state that is magnetized all the time to the magnetic force property of the magnetized a little normal magnetic material of this magnetic direction.
[technical literature formerly]
[patent documentation]
[patent documentation 1] japanese patent laid-open 6-289112 communique
[patent documentation 2] japanese patent laid-open 4-346087 communique
Summary of the invention
The objective of the invention is to; Even provide coercive force big strong magnetic materials such as Nd series; Also can differentiate the magnetic force property assay method and the magnetic force property determinator of the abominable magnetic material of hot demagnetize characteristic through small-scale equipment with low-cost and estimate the fluctuation of the magnetic force property of magnetic material easily.
In order to solve above-mentioned problem; In magnetic force property assay method of the present invention; To be injected into strong magnetic material through the magnetic flux that magnetic field generating means takes place as determinand; Measure the magnetic force property of strong magnetic material, be provided with at the magnetic pole of said magnetic field generating means with between and be configured with gap, will be injected into strong magnetic material from said magnetic field generating means with the magnetic flux of area below the physical dimension of the face of the opposed said strong magnetic material of magnetic pole as the strong magnetic material of said determinand; Measure the power that said strong magnetic material receives, measure magnetic force property thus.
In addition; In magnetic force property assay method of the present invention; To be injected into strong magnetic material through the magnetic flux that magnetic field generating means takes place as determinand; Measure the magnetic force property of strong magnetic material, wherein be provided with and be configured with gap, will be injected into strong magnetic material from said magnetic field generating means with the magnetic flux of area below the physical dimension of the opposed said strong magnetic material of magnetic pole at the magnetic pole of said magnetic field generating means with between as the strong magnetic material of said determinand; Change temperature and measure the power that said strong magnetic material receives, measure hot demagnetize characteristic thus.
Magnetic force property determinator of the present invention; Has magnetic field generating means; To be injected into strong magnetic material through the magnetic flux that this magnetic field generating means takes place as determinand; Measure the magnetic force property of strong magnetic material, this magnetic force property determinator possesses: and as the magnetic pole of the said magnetic field generating means of configuration with gap is set between the strong magnetic material of said determinand; The load connecting gear that is connected with strong magnetic material as said determinand; And the load transducer of the power that receives through said magnetic flux of the strong magnetic material of measuring the said determinand of conduct that transmits via said load connecting gear, the area of the leading section of the magnetic pole of magnetic field generating means is below the area as the strong magnetic material of said determinand.
In addition, magnetic force property determinator of the present invention also possesses the heating arrangements that the strong magnetic material as said determinand is heated, and measures the hot demagnetize characteristic of strong magnetic material.
According to the present invention; Even the strong magnetic material that coercive force is big; Also can be through small-scale equipment with low-cost and measure hot demagnetize characteristic isodynamic characteristic easily, so can contribute to the quality of the electrical components of the motor that uses strong magnetic material etc. and the raising of reliability.
Description of drawings
Fig. 1 is the structural drawing of the magnetic force property determinator of embodiments of the invention 1.
Fig. 2 is the key diagram that magnetic force property of the present invention is measured.
Fig. 3 is the example through the result of the magnetic force property determinator mensuration of embodiments of the invention 1.
Fig. 4 is an example that makes the result who measures after the temperature variation through the magnetic force property determinator of embodiments of the invention 1.
Fig. 5 is an example that imposes on the current waveform of magnetic flux generation of the present invention portion.
Fig. 6 is the example through the result of the magnetic force property determinator mensuration of embodiments of the invention 2.
Fig. 7 is the example through the result of the magnetic force property determinator mensuration of embodiments of the invention 2.
Fig. 8 is the example through the result of the magnetic force property determinator mensuration of embodiments of the invention 1.
Fig. 9 is the structural drawing of the magnetic force property determinator of embodiments of the invention 3.
Figure 10 is the structural drawing of the magnetic force property determinator of embodiments of the invention 4.
Figure 11 is the structural drawing of the magnetic force property determinator of embodiments of the invention 5.
Figure 12 is an example of the structural drawing of existing magnetic force property determinator.
Figure 13 is the synoptic diagram of strong magnetic material section.
Symbol description
100 magnetic force property determinators
101 load transducers
102 load connecting gears
103 coils
104 yokes
105 determinands
106 heating arrangements portions
107 magnetic poles
108 magnetic fluxs
109 magnetic pole movable agencies
The fulcrum of 110 load connecting gears
Embodiment
Following with reference to description of drawings embodiment of the present invention.
The device 100 of measuring the magnetic force property of magnetic material through the electromagnet shown in Fig. 1 is used in explanation in the present embodiment, measures the assay method of the hot demagnetize characteristic of strong magnetic material simply.
Fig. 1 is the structural drawing of device of hot demagnetize characteristic of the mensuration strong magnetic material of present embodiment.
The device that uses in the present embodiment is made up of load transducer 101, load connecting gear 102, coil 103, yoke 104, determinand 105, heating arrangements portion 106, magnetic pole 107, magnetic flux 108, magnetic pole movable agency 109.The fulcrum of symbol 110 expression load connecting gears.Determinand 105 is the strong magnetic materials that magnetized and finished, and uses in the present embodiment with neodymium, iron, boron to be major component, with Nd2Fe
14B is the so-called Nd series of magnets of principal phase, but also can be Nd series of magnets or Sm-Co series of magnets, alnico alloy magnet, Fe-Cr-Co series of magnets, ferrite lattice, ferrite attachment magnets (ferrite bond magnet) of other principal phases etc.
About using this device to measure the example of the magnetic force property of determinand 105, use Fig. 1 and Fig. 2 to specify.In Fig. 1, determinand 105 is configured in to be arranged between opposed two magnetic poles 107 of state in the heating arrangements 106 made of copper.Use after magnetic pole movable agency 109 and dividing plate (spacer) (not shown) etc. adjust at interval between heating arrangements 106 and the magnetic pole 107, positions after fixing magnetic pole 107 through screw clamp etc.
The relation of write up magnetic pole 105 and determinand 105 among Fig. 2.The present invention makes certain clearance wittingly between magnetic pole and determinand, the load that receives through the flux measuring determinand that generates from magnetic pole.The physical dimension of expression magnetic pole 107 is greater than the situation of the physical dimension of determinand 105 in Fig. 2 (a).The direction of the direction of the magnetic flux 201 that takes place at magnetic pole 107 at this moment, and the magnetic flux 202 of determinand 105 is opposite.Therefore, at the central portion of magnetic pole 107, the magnetic flux 201 of magnetic pole 107 and the magnetic flux 202 of determinand 105 repel each other.On the other hand, at the peripheral part of magnetic pole 107, magnetic flux 201 confused that the part of the ring 203 of the magnetic flux that is formed that generates in the end of determinand and magnetic pole 107 take place, magnetic pole peripheral part and determinand are attracted each other.Therefore, under the situation of the relation of magnetic pole shown in Fig. 2 (a) and determinand, even determinand 102 has been injected magnetic flux 201 from magnetic pole 107, magnetic field force is also cancelled out each other, and load does not take place in determinand 105.On the other hand; Shown in Fig. 2 (b); Under the situation below the physical dimension of determinand 105, and the interference between the ring 203 of the magnetic flux that forms of determinand is little in the physical dimension of magnetic pole 107, so the magnetic flux 202 of the magnetic flux 201 of magnetic pole 107 and determinand 105 repels each other; Determinand 105 produces load through the magnetic flux 201 of magnetic pole 107; Promptly, can be through the physical dimension of magnetic pole 107 being made below the physical dimension of determinand 105, the magnetic flux 201 that takes place through magnetic pole 107 makes determinand 105 that load take place, and measures this load.
In coil 103, flow through the DOM opposite magnetic flux 108 of electric current at 107 generations of magnetic pole and determinand, under the situation that produces mutual expelling force, the size of magnetic flux gets final product below the magnetic flux on the surface of passing through strong magnetic material.Specifically, for the magnetic flux density of strong magnetic material multiply by with the area of the face of the opposed strong magnetic material of magnetic pole magnetic flux below get final product.In fact, shown in Fig. 2 (b), determinand 105 is roughly the same with the area of the face of magnetic pole 107 antagonism, and institute is so that take place and the surface magnetic flux density ground of determinand 105 equal extent flows through electric current in coil 103 at magnetic pole 107, thus.The surface magnetic flux density of the Nd series of magnets of using in the present embodiment is about 1k Gauss.Therefore, the relict flux density of determinand 105 is about the 10k oersted.External diameter ф 300mm, the internal diameter ф 120mm of the coil 103 that uses in the present embodiment flow through in coil under the situation of 10A ground DC current, and it is the 10k oersted that magnetic pole produces magnetic field intensity in determined position.In the present embodiment, measured the electric current that flows through at coil in 0 to 10A scope.In Fig. 3, represented under this condition, measured the example of the load that takes place at determinand 105.Through applying the correlativity of the loadmeter timberline property that magnetic field and magnetic flux 108 receive, be the 10k oersted applying magnetic field, the load that determinand 105 receives through magnetic flux 108 is 12N.At this moment, become the load that determinand 105 receives through magnetic flux 108, be sent to load transducer 101, through the determined structure of load transducer 101 via load connecting gear 106.In the present embodiment, used the load transducer of distortion measurement ceremony, as long as but the mensuration resolution about 1N is arranged, just can be to use the load transducer of other modes such as mode of piezoelectricity (piezo).Therefore, in this device, be the device of measuring to as the load in the magnetic field of the determinand 105 of magnetic material.
In Fig. 1; With from upper side to the direction of downside direction as gravity, vertically dispose magnetic pole 107, determinand 105, load connecting gear 102 etc. from magnetic pole 107 and gravity to the mode that determinand 105 injects magnetic fluxs and is determined at the power that the left and right directions determinand 105 vertical with gravity receive.
In the present embodiment, in coil 103, flow through electric current, the magnetic flux 108 of the direction that generation is opposite with the DOM that determinand 105 is held is measured the load that determinand 105 receives through load transducer 101.On the other hand, load transducer 101 is configured in the direction vertical with the driving direction of load connecting gear 102 across load connecting gear 102.Therefore, with the situation shown in Fig. 2 on the contrary, produce the magnetic flux with the magnetization equidirectional of determinand 105 at magnetic pole 107, measure the gravitation that determinand 105 receives from magnetic flux 108.Like the situation of above-mentioned record, the direction of the magnetic flux 108 that takes place from magnetic pole 107 no matter be with the rightabout situation of the magnetization of determinand 105 under, still under the situation of equidirectional, can both be determined at the power of determinand generation.
In addition, heating arrangements 106 becomes the structure of having imbedded well heater in inside, becomes the structure that can control independently with the generating mechanism of the magnetic flux of magnetic pole 107.Therefore, can use heating arrangements 106 temperature of control determinand arbitrarily, and, be determined at the load that determinand 105 takes place to magnetic flux 108 from magnetic pole 107.In addition; In the present embodiment; Type of heating based on well heater is disclosed; But for example so long as the type of heating that Halogen lamp LED or laser are used as thermal source etc. have the type of heating that can be heated to as the ability of about 300 degree of the Curie point of Nd series of magnets, just special problem can not take place.
In Fig. 4, illustrate and use this device, will apply magnetic field and remain on the 10k oersted, the temperature of determinand 105 is risen, and measured mensuration result's the example of the situation of the load that takes place at determinand 105.Under the situation of present embodiment, the temperature that is accompanied by determinand 105 rises, in the about 100 ℃ of minimizings that can confirm load.When becoming more than 100 ℃, then load sharply reduces.Like this, through this assay method, can pass through the hot demagnetize phenomenon of work in-process (in process) observation magnet.Thus, can estimate the temperature that hot demagnetize phenomenon begins, can differentiate the magnet of easy hot demagnetize, so can be simply sort magnet according to the point of hot demagnetize.
Use device 100, other embodiment of the assay method of the hot demagnetize characteristic of measuring magnet simply is described through the magnetic force property of the mensuration of the electromagnet shown in above-mentioned Fig. 1 magnetic material.
In the present embodiment; The magnetic field that applies for determinand 105; 107 of magnetic poles alternating magnetic field takes place through applying alternating current as shown in Figure 5 501; Through the alternating flux that this alternating magnetic field produces, measure the power that determinand 105 receives by load transducer 101, measure the magnetization characteristic of determinand 105 or the repeat property of magnetization characteristic thus.In embodiment 1 under the situation of record, the direction that no matter is the magnetic flux 108 that takes place from magnetic pole 107 is under the situation of the direction opposite with the magnetization of determinand 105, still under the situation of equidirectional, can both be determined at the power of determinand generation.
The mensuration result's of expression present embodiment a example among Fig. 6.
Fig. 6 (a) be at room temperature measuring with respect to an example of the load that generates in the determinand 105 of alternating magnetic field.Load is represented linear relevant with the intensity of alternating magnetic field.Fig. 6 (b) expression is made as 100 ℃ of variations with respect to the load of alternating magnetic field when spending with the temperature of determinand 105.At this moment, compare, diminish with respect to the load in same magnetic field with (a).In addition, through heating, the linear property deterioration between the intensity of alternating magnetic field and load, expression magnetic hysteresis waveform.Further heating of expression in Fig. 6 (c), the temperature of determinand 105 is 130 ℃ a situation.Further reduce sensitivity when at this moment, also can represent the magnetic hysteresis waveform with respect to magnetic field.Think that this is owing to increase through many magnetic regions particle of heating shown in Figure 13, along with the particle of the direction of external magnetic field increases and takes place.
On the other hand, expression applies alternating magnetic field for other determinands 105 ' in Fig. 7, has measured an example of load-field waveform.Under the situation of this determinand 105 ', the load that receives through magnetic flux 108 equates with the situation of determinand 105, even but the mensuration under the room temperature is also represented the magnetic hysteresis waveform.The result of the hot demagnetize characteristic of this determinand 105 ' has been measured in expression with the method for representing among the embodiment 1 in Fig. 8.In Fig. 8, the hot demagnetize characteristic of solid line 801 expression determinands 105 '.In addition, with dashed lines 401 is illustrated in the demagnetize characteristic that the load-field curve shown in the embodiment 1 is represented linear determinand 105 among the figure.Through Fig. 8, the determinand 105 ' that can confirm to represent the magnetic hysteresis waveform and load-field curve with the load-field curve under the room temperature represent linear determinand 105 mutually specific heat demagnetize characteristic be inferior position.This is illustrated in also can analogize under the mensuration of room temperature and measures thing 105 ' and have a plurality of many magnetic regions particle, the bad situation of hot demagnetize characteristic.Thereby the hot demagnetize phenomenon of determinand 105 also can be according to the state that magnetizes, and load-field waveform of measuring under the situation that has applied alternating magnetic field under the room temperature is estimated.
Embodiment 3
In the present embodiment, explain that the magnetic flux of unit give to(for) determinand is not the electromagnet that makes the coil midstream excess current, and be to use the example of load determinator of the strong magnetic material of the situation of measuring as the permanent magnet of ferromagnetism body.
Fig. 9 is that expression applies magnetic flux 108 through 901 pairs of determinands 105 of permanent magnet, and measures the example of the structural drawing of the device 900 of the power 204 of generation at this moment.
In the apparatus structure of in Fig. 9, representing, omit explanation for structure of having added the same-sign shown in the Fig. 1 that has explained and part with identical function.In the device shown in Fig. 9 900, permanent magnet 901 drives to the direction identical with the magnetic flux of permanent magnet 901 generations through permanent magnet movable agency 903 and controller 904.In the present embodiment, control, but so long as can carry out the mode of the control about 1mm, just have no particular limits through servomotor.Control the distance between determinand 105 and the permanent magnet 901 through controller 904, thus, can control the size that involves to the magnetic flux 108 of determinand 105.Driving on one side this permanent magnet movable agency 903, on one side the load measured with respect to the determinand 105 of magnetic flux 108 of maneuvering load sensor 101, can measure simple and easy and accurately thus.In addition, have heating arrangements 106 identically, can heat determinand 105 on one side with device 100, through magnetic flux 108 be determined at load that determinand 105 take place on one side.In addition, with device 105 identical ground, in device 900, the physical dimension that also makes magnetic pole 107 below the profile of determinand 105, measuring load 204 in high sensitivity thus.
Embodiment 4
In the present embodiment; Explanation is to make to flow through electric current in the coil 103 under the situation of the so-called electromagnet of magnetic pole 107 generation magnetic fluxs 108 in the magnetic flux of unit give to(for) determinand 105; Be provided with two in both sides across determinand 105; With the opposite direction generation magnetic flux 108 of flow direction of the generation of determinand 105, measure the example of the device of the power that generates at determinand 105 accordingly with magnetic flux 108.
Figure 10 representes to append an electromagnet again for the apparatus structure of embodiment 1, increases the magnetic flux 108 through magnetic pole 107, increases the device 1000 when measuring sensitivity.
In the structure of Figure 10, omit explanation for structure of having added the prosign shown in the Fig. 1 that has explained and part with identical functions.In the device shown in Figure 10 1000, be provided with two magnetic poles 107 across determinand 105.Therefore, can give the magnetic flux 108 of the twice of the device of putting down in writing among the embodiment 100 to determinand 105.Therefore,, the big magnetic material of coercive force becomes effective apparatus structure under being the situation of determinand.In addition, likewise have heating arrangements 106 with device 100, on one side can heat determinand 105, Yi Bian measuring load.In addition, and also be in this case the physical dimension of magnetic pole 107 below the physical dimension of determinand 105, measuring load in high sensitivity thus.
In the present embodiment, explain that the mechanism of amplifying the load that determinand 105 receives from magnetic flux 108 is not in the bar-shaped fork mode shown in Fig. 1, but utilized the example of load determinator of magnetic material of structure of the fork mode of hinge.
Figure 11 is the structural drawing that passes through to be determined at from the magnetic flux of magnetic pole the device 1100 of the power that takes place in the determinand 105 among the expression embodiment 5.
In the apparatus structure of Figure 11, omitted explanation for structure of having added the prosign shown in the Fig. 1 that has explained and part with identical functions.In the device shown in Figure 11 1100, the load connecting gear 1101 that is transmitted in the load that generates the determinand 105 through the magnetic flux 108 that takes place from magnetic pole 107 becomes the structure that has utilized hinge.In this case, also can become principle, transmit the load of determinand and come to measure accurately through fork.And, under the situation of the load connecting gear 1101 of hinge structure, improved miniaturization and high-speed responsive property, help measuring accurately the load of coming coil has been applied the determinand under the situation of exchange current with high-frequency.
Have heating arrangements 106 with device 100 identically, on one side can heat determinand 105, Yi Bian measuring load.In addition, further, physical dimension that in this case also can be through magnetic pole 107 in the profile of determinand 105 with measuring load in high sensitivity down.
Claims (12)
1. the magnetic force property assay method of a strong magnetic material, it will be injected into the strong magnetic material as determinand through the magnetic flux that magnetic field generating means takes place, and measure the magnetic force property of strong magnetic material, it is characterized in that,
Be provided with at the magnetic pole of said magnetic field generating means with between and be configured with gap as the strong magnetic material of said determinand; The magnetic flux of the area below the physical dimension of said strong magnetic material is injected into opposed of strong magnetic material; Measure the power that magnetic flux that said strong magnetic material generates through said magnetic field generating means receives, measure magnetic force property thus.
2. the magnetic force property assay method of a strong magnetic material, it will be injected into the strong magnetic material as determinand through the magnetic flux that magnetic field generating means takes place, and measure the magnetic force property of strong magnetic material, it is characterized in that,
Be provided with at the magnetic pole of said magnetic field generating means with between and be configured with gap as the strong magnetic material of said determinand; The magnetic flux of the area below the physical dimension of said strong magnetic material is injected into opposed of strong magnetic material; Change temperature and measure the power that magnetic flux that said strong magnetic material generates through said magnetic field generating means receives, measure hot demagnetize characteristic thus.
3. the magnetic force property assay method of strong magnetic material according to claim 1 and 2 is characterized in that,
Through said magnetic field generating means alternating flux taking place, measures the magnetic hysteresis waveform for opposed that alternating flux is injected into as the strong magnetic material of said determinand.
4. the magnetic force property determinator of a strong magnetic material, it has magnetic field generating means, will be injected into the strong magnetic material as determinand through the magnetic flux that this magnetic field generating means takes place, and measures the magnetic force property of strong magnetic material, it is characterized in that,
Possess:
And as the magnetic pole of the said magnetic field generating means of configuration with gap is set between the strong magnetic material of said determinand; The load connecting gear that is connected with strong magnetic material as said determinand; And the load transducer of the power that receives through said magnetic flux of the strong magnetic material of measuring the said determinand of conduct that transmits via said load connecting gear,
The area of the leading section of the magnetic pole of magnetic field generating means is below opposed the area as the strong magnetic material of said determinand.
5. the magnetic force property determinator of strong magnetic material according to claim 4 is characterized in that,
Also possess the heating arrangements that the strong magnetic material as said determinand is heated, measure the hot demagnetize characteristic of strong magnetic material.
6. according to the magnetic force property determinator of claim 4 or 5 described strong magnetic materials, it is characterized in that,
Said magnetic field generating means is made up of coil and yoke.
7. the magnetic force property determinator of strong magnetic material according to claim 6 is characterized in that,
Apply exchange current for said coil.
8. the magnetic force property determinator of strong magnetic material according to claim 6 is characterized in that,
The magnetic field generating means that is made up of said coil and yoke is configured in the both sides as the strong magnetic material of said determinand.
9. according to the magnetic force property determinator of claim 4 or 5 described strong magnetic materials, it is characterized in that,
Said magnetic field generating means is made up of permanent magnet.
10. the magnetic force property determinator of strong magnetic material according to claim 9 is characterized in that,
Possesses the permanent magnet movable agency that said permanent magnet is driven to the direction identical with the magnetic flux of this permanent magnet generation.
11. the magnetic force property determinator of strong magnetic material according to claim 4 is characterized in that,
The load connecting gear that said load connecting gear is a hinge structure.
12. the magnetic force property determinator of strong magnetic material according to claim 4 is characterized in that,
Make magnetic flux vertically be injected into said strong magnetic material and measure the power that said magnetic material receives in the direction vertical with gravity from the magnetic pole of said magnetic field generating means with gravity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-005823 | 2011-01-14 | ||
| JP2011005823A JP5644032B2 (en) | 2011-01-14 | 2011-01-14 | Method and apparatus for measuring magnetic properties of ferromagnetic materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102590769A true CN102590769A (en) | 2012-07-18 |
| CN102590769B CN102590769B (en) | 2014-11-26 |
Family
ID=46479688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210010946.7A Expired - Fee Related CN102590769B (en) | 2011-01-14 | 2012-01-13 | Magnetic force property measuring method and magnetic force property measuring device for ferromagnetic material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5644032B2 (en) |
| CN (1) | CN102590769B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026947A (en) * | 2013-02-25 | 2015-11-04 | 日产自动车株式会社 | Magnet evaluating device and method |
| CN108535670A (en) * | 2018-04-09 | 2018-09-14 | 河北工业大学 | A kind of spatial high-frequency rotary magnetic characteristic measuring system and measurement method |
| CN111983531A (en) * | 2020-07-09 | 2020-11-24 | 桐庐科邦磁性材料有限公司 | Magnet magnetizing detection device and detection method |
| RU2793610C1 (en) * | 2022-06-17 | 2023-04-04 | Федеральное государственное бюджетное учреждение науки Физический институт им. П.Н. Лебедева Российской академии наук (ФИАН) | Method for determining magnetic properties of a material |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6091312B2 (en) * | 2013-04-24 | 2017-03-08 | 三菱電機株式会社 | Permanent magnet characteristic inspection method and permanent magnet characteristic inspection apparatus |
| SG2013047410A (en) * | 2013-06-19 | 2015-01-29 | Lai Huat Goi | An apparatus for generating nanobubbles |
| JP6411722B2 (en) | 2013-09-25 | 2018-10-24 | トヨタ自動車株式会社 | Magnetic property measurement method |
| US9835569B2 (en) | 2013-09-25 | 2017-12-05 | Toyota Jidosha Kabushiki Kaisha | Magnetic measurement system and apparatus utilizing X-ray to measure comparatively thick magnetic materials |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03160381A (en) * | 1989-11-18 | 1991-07-10 | Asuka Denshi:Kk | Characteristic measuring apparatus for magnetic card |
| JPH0460477A (en) * | 1990-06-28 | 1992-02-26 | Furukawa Electric Co Ltd:The | Measurement of magnetic characteristic for superconductor |
| EP0514759A2 (en) * | 1991-05-24 | 1992-11-25 | Seiko Instruments Co., Ltd. | Magnetic characteristics measuring apparatus |
| JPH06289112A (en) * | 1993-03-31 | 1994-10-18 | Tokin Corp | Magnetic measurement device |
| JPH07333309A (en) * | 1994-06-06 | 1995-12-22 | Fuji Elelctrochem Co Ltd | Magnetic characteristic measurement device |
| JPH09236583A (en) * | 1996-03-01 | 1997-09-09 | Shikoku Sogo Kenkyusho:Kk | Method and device for characteristics measurement of super-conductor |
| EP1353168A2 (en) * | 2002-04-10 | 2003-10-15 | Rhopoint Ltd. | Apparatus for monitoring extent of cure of a coating |
| JP2007033195A (en) * | 2005-07-26 | 2007-02-08 | Tesla:Kk | Magnetic characteristic measuring method and measuring device |
| CN101109720A (en) * | 2006-07-19 | 2008-01-23 | 西门子（中国）有限公司 | Method and apparatus for measuring change characteristic of magnetic material magnetic flux density according to temperature |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421377A (en) * | 1987-07-17 | 1989-01-24 | Japan Atomic Energy Res Inst | Magnetic probe and permeability measuring device |
| JPH06331719A (en) * | 1993-05-25 | 1994-12-02 | Isuzu Motors Ltd | Method and equipment for evaluating thermal characteristics of permanent magnet |
| CA2691628A1 (en) * | 2007-07-02 | 2009-05-14 | Steorn Limited | System and method for measuring energy in magnetic interactions |
-
2011
- 2011-01-14 JP JP2011005823A patent/JP5644032B2/en not_active Expired - Fee Related
-
2012
- 2012-01-13 CN CN201210010946.7A patent/CN102590769B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03160381A (en) * | 1989-11-18 | 1991-07-10 | Asuka Denshi:Kk | Characteristic measuring apparatus for magnetic card |
| JPH0460477A (en) * | 1990-06-28 | 1992-02-26 | Furukawa Electric Co Ltd:The | Measurement of magnetic characteristic for superconductor |
| EP0514759A2 (en) * | 1991-05-24 | 1992-11-25 | Seiko Instruments Co., Ltd. | Magnetic characteristics measuring apparatus |
| JPH06289112A (en) * | 1993-03-31 | 1994-10-18 | Tokin Corp | Magnetic measurement device |
| JPH07333309A (en) * | 1994-06-06 | 1995-12-22 | Fuji Elelctrochem Co Ltd | Magnetic characteristic measurement device |
| JPH09236583A (en) * | 1996-03-01 | 1997-09-09 | Shikoku Sogo Kenkyusho:Kk | Method and device for characteristics measurement of super-conductor |
| EP1353168A2 (en) * | 2002-04-10 | 2003-10-15 | Rhopoint Ltd. | Apparatus for monitoring extent of cure of a coating |
| JP2007033195A (en) * | 2005-07-26 | 2007-02-08 | Tesla:Kk | Magnetic characteristic measuring method and measuring device |
| CN101109720A (en) * | 2006-07-19 | 2008-01-23 | 西门子（中国）有限公司 | Method and apparatus for measuring change characteristic of magnetic material magnetic flux density according to temperature |
Non-Patent Citations (1)
| Title |
|---|
| 姚晓喻: "电磁感应载荷传感器研制及应用", 《石油钻采工艺》, vol. 19, no. 6, 31 December 1997 (1997-12-31), pages 1 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026947A (en) * | 2013-02-25 | 2015-11-04 | 日产自动车株式会社 | Magnet evaluating device and method |
| CN105026947B (en) * | 2013-02-25 | 2017-09-12 | 日产自动车株式会社 | Magnet evaluating apparatus and its method |
| CN108535670A (en) * | 2018-04-09 | 2018-09-14 | 河北工业大学 | A kind of spatial high-frequency rotary magnetic characteristic measuring system and measurement method |
| CN111983531A (en) * | 2020-07-09 | 2020-11-24 | 桐庐科邦磁性材料有限公司 | Magnet magnetizing detection device and detection method |
| CN111983531B (en) * | 2020-07-09 | 2023-03-10 | 桐庐科邦磁性材料有限公司 | Magnet magnetizing detection device and detection method |
| RU2793610C1 (en) * | 2022-06-17 | 2023-04-04 | Федеральное государственное бюджетное учреждение науки Физический институт им. П.Н. Лебедева Российской академии наук (ФИАН) | Method for determining magnetic properties of a material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102590769B (en) | 2014-11-26 |
| JP2012145533A (en) | 2012-08-02 |
| JP5644032B2 (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102590769B (en) | Magnetic force property measuring method and magnetic force property measuring device for ferromagnetic material | |
| US8692545B2 (en) | Magnetostrictive stress sensor | |
| SA519401501B1 (en) | Improved downhole electromagnetic acoustic transducer sensors | |
| EP2940464B1 (en) | Apparatus and method for detecting inner defects of steel plate | |
| Ueno et al. | Magnetic force control based on the inverse magnetostrictive effect | |
| CN104569875A (en) | Measuring system and method for two-dimension magnetic properties of silicon steel sheets on controllable stress conditions | |
| CN106225961B (en) | Touch sensor for robot | |
| JP2013245958A (en) | Magnetic flux density distribution measurement apparatus and magnetic flux density measurement method | |
| CN103197263B (en) | There is the small-sized alternating magnetoelectric sensor of adjustable bias magnetic circuit | |
| CN102830375A (en) | Device and method for measuring temperature properties of permanent magnet and permanent magnet material in open circuit | |
| JP2008122138A (en) | Method and instrument for measuring magnetic characteristics and mechanical strength of steel sheet | |
| JP5761787B2 (en) | Sensor and adjustment method thereof | |
| CN101852775B (en) | Device for regulating magnetostrictive detection of longitudinal static magnetic field | |
| JP2015099053A (en) | Selection method of magnet material, magnetic measuring device used in the same, and permanent magnet motor configured by using the selection method | |
| EP0027308A1 (en) | Manufacture and use of magnetic scale systems | |
| JP4541136B2 (en) | Magnetic body detection sensor and magnetic body detection line sensor | |
| Gupta et al. | Wireless temperature sensor operating in complete metallic environment using permanent magnets | |
| CN111208457B (en) | Novel magnetostriction measurement method and device | |
| JP5119880B2 (en) | Magnetostrictive stress sensor | |
| JP4376697B2 (en) | Micro displacement control apparatus and apparatus and method using the same | |
| JP4192333B2 (en) | Method for measuring transformation layer thickness of steel | |
| Powell et al. | Optimisation of magnetic speed sensors | |
| RU171066U1 (en) | MAGNETO-ELECTRIC CONTACTLESS DC SENSOR | |
| JP2006300902A (en) | Stress detection method and device | |
| CN203929290U (en) | A kind of cable tension sensor that is applied to health monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |