CN109166721A - A method of changing ferrite magnetic piece performance - Google Patents
A method of changing ferrite magnetic piece performance Download PDFInfo
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- CN109166721A CN109166721A CN201811038862.8A CN201811038862A CN109166721A CN 109166721 A CN109166721 A CN 109166721A CN 201811038862 A CN201811038862 A CN 201811038862A CN 109166721 A CN109166721 A CN 109166721A
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- inductance value
- magnetic sheet
- sample
- ferrite magnetic
- steel rod
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 14
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 14
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- -1 polyethylene terephthalate Polymers 0.000 claims description 9
- 238000007619 statistical method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 6
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 6
- 229910001308 Zinc ferrite Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- KOMIMHZRQFFCOR-UHFFFAOYSA-N [Ni].[Cu].[Zn] Chemical compound [Ni].[Cu].[Zn] KOMIMHZRQFFCOR-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 239000006247 magnetic powder Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention provides a kind of methods for changing ferrite magnetic piece performance, which comprises 1) the step-length range for setting inductance value variation chooses sample in the ferrite magnetic sheet that same thickness equally forms；2) to the sample pad pasting of selection, pad pasting sample is obtained；3) diameter and length for choosing steel rod, are grouped the pad pasting sample of each inductance value step-length range, the corresponding steel rod roll-in sliver of each group, test the inductance value of sample after sliver；4) corresponding relationship between the sample inductance value measured after inductance value step-length range, steel rod diameter and length, pressure and sliver is set up；5) according to the inductance value of ferrite magnetic sheet to be processed, required inductance value and the corresponding relationship, corresponding Roller compactor process conditions is obtained and roll-in sliver is carried out to ferrite magnetic sheet to be processed, inductance value is obtained and meets the ferrite magnetic sheet needed.Present method solves the properties of product of industrial production ferrite magnetic sheet to be difficult to problem with uniformity.
Description
Technical field
The invention belongs to technical field of magnetic materials, be related to ferrite magnetic sheet performance more particularly to a kind of change iron oxygen
The method of body magnetic sheet performance.
Background technique
Electromagnetic induction wireless charging, what is utilized is electric magnetisation --- the electromagnetic induction principle of the raw electricity of magnetic, i.e. " electricity " and " magnetic "
It may be implemented to mutually convert.Mobile phone and wireless charger both ends are mounted with reception/transmitting coil respectively, and wireless charger electric current is logical
The coil for crossing transmitting terminal generates magnetic field, and the coil of mobile phone receiving end will generate electric current close to the magnetic field, by whole built in mobile phone
Stream filter circuit of pressure-stabilizing is converted to the DC direct current that can be used.
Among the device of wireless charging, it is necessary to a kind of ambrose alloy Zn soft magnetic ferrite piece is used, due to being used in mobile phone,
It is under normal circumstances 20-300um so defining that used magnetic sheet must be very thin, and such magnetic sheet is with pre- burned magnetic
Powder synthesizes slurry, is cast into green tape with slurry after adding certain binder, plasticizer, dispersing agent, by cutting,
Then it can be made by high temperature sintering, due to required magnetic sheet very thin thickness, but require the magnetic sheet appearance free from admixture being sintered out,
Flatness is high, in mass production, it is desirable that yield yield rate and efficiency.
But in the manufacturing process of batch, due to the ingredient of magnetic powder, the difference of granularity in production process, between batch
The performance of difference, the product that can all cause sintering to come out is variant.In wireless charging with soft magnetic ferrite piece after sintering to material
The performance of material to carry out inductance value measurement and magnetic conductivity measurement, even with kiln same batch products sintering come out after, produce
The performance of product also can difference, but requirement must provide the product of quality consistency to client again in industrial processes,
This just causes great trouble for production.
In the prior art, the method overwhelming majority for changing performance is set about from formula components, and industrial life can not be solved
The problem of properties of product consistency during production.
CN106709186A discloses a kind of permanent-magnet ferrite magnetic property aided design system, including Recipe generates mould
Block, target capabilities input module, Preburning material magnetic property MIM message input module, additive limit module and Recipe exports mould
Block；Target capabilities input module, Preburning material magnetic property MIM message input module, additive limit module and Recipe output module
It is connected respectively with Recipe generation module；Target capabilities input module is for inputting target permanent-magnet ferrite magnetic property information；
Preburning material magnetic property MIM message input module is for inputting permanent ferrite prefiring material magnetic property information；Additive limits module and is used for
Limiting in target permanent-magnet ferrite needs additive to be added；Recipe generation module reaches needed for target capabilities for generating
The optimal proportion of additive；Recipe output module is for exporting the optimal proportion for reaching additive needed for target capabilities.It is logical
The research and development of products period can be shortened by crossing present system, reduce research and development cost.
Although the program can change ferritic performance, but seriously increase production cost, and can not also solve
Certainly the problem of properties of product consistency.
Therefore, a kind of method for developing properties of product consistency problem for being able to solve industrial production ferrite magnetic sheet,
There is important meaning for the industrial production of this field.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of side for changing ferrite magnetic piece performance
Method, method of the invention can decline this phenomenon using the inductance of original magnetic sheet after sliver after pad pasting, pass through different sliver journeys
Degree, makes the magnetic sheet of original different performance reach identical performance.
To achieve this purpose, the present invention adopts the following technical scheme:
The present invention provides a kind of method for changing ferrite magnetic piece performance, the described method comprises the following steps:
(1) the step-length range of setting inductance value variation, chooses in the ferrite magnetic sheet that same thickness equally forms and falls into
The sample of corresponding inductance value range；
(2) the sample pad pasting chosen to step (1), obtains pad pasting sample；
(3) diameter and length for choosing steel rod, according to the steel rod of selection to the pad pasting sample of each inductance value step-length range
It is grouped, each group carries out roll-in sliver under selected pressure with corresponding steel rod, tests the inductance value of sample after sliver；
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship；
(5) according to the inductance value of ferrite magnetic sheet to be processed, the inductance value and step (4) that are needed after pad pasting sliver
Obtained corresponding relationship obtains corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to iron to be processed
Oxysome magnetic sheet carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed, described to be processed
Ferrite magnetic sheet thickness and composition it is identical as step (1) the ferrite magnetic sheet.
In the industrial production, the magnetic sheet for being sintered out is complete rigid magnetic sheet, and the magnetic sheet after pad pasting is because will carry out
Sliver, so then becoming film after pad pasting, a large amount of test discovery, sliver can be such that magnetic conductivity and inductance value falls, pad pasting
Meeting generates minimal effect to the inductance value of magnetic sheet.Method provided by the invention utilizes pad pasting by data test-collection-analysis
Sliver can change this phenomenon of magnetic sheet performance afterwards, controllably be changed to the performance of every a piece of magnetic sheet, may finally to produce
The quality of product is with uniformity, and it is with uniformity to solve the problems, such as that the properties of product for industrially producing ferrite magnetic sheet are difficult to.
Corresponding relationship described in step (4) of the present invention and step (5) refers to the ferrite magnetic sheet that same thickness equally forms
Inductance value range before pad pasting sliver, and by pad pasting and certain length certain diameter steel rod under a certain pressure into
The corresponding relationship of inductance value range after row roll-in sliver.For example, a kind of 128KHz nickel-zinc ferrite magnetic sheet, 120 μm of thickness, patch
Inductance value range before film sliver is 11.2~11.25, the use of length is being 30cm, the steel rod that diameter is 30mm is pressed in 0.3MPa
After carrying out roll-in sliver under power, inductance value range is 11.15~11.21.
Heretofore described ferrite magnetic sheet by the certain binder of addition, is plasticized preferably with pre- burned magnetic powder
After agent, dispersing agent, synthesize slurry, be cast into green tape with slurry, by cutting, is then prepared by high temperature sintering.
In the present invention, step (1) the same composition refers to that the ratio between the component and component of ferrite magnetic sheet is all identical.
In step (5), the composition of ferrite magnetic sheet to be processed is identical as step (1) the ferrite magnetic sheet to refer to iron oxygen to be processed
Ratio between the component and component of body magnetic sheet is all identical as step (1) the ferrite magnetic sheet.
It is used as currently preferred technical solution below, but not as the limitation to technical solution provided by the invention, leads to
Following preferred technical solution is crossed, can preferably reach and realize technical purpose and beneficial effect of the invention.
As currently preferred technical solution, in step (1), the step-length range L T.LT.LT 0.1 of the inductance value variation, such as
0.099,0.09,0.08,0.07,0.06,0.05,0.04 etc..Here if the step-length range of inductance value variation is excessive, after making
Continuous obtained corresponding relationship error is excessive, loses industrial application value.
As the present invention preferably technical solution, in step (1), the ferrite magnetic sheet with a thickness of 20 μm -300 μm,
Such as 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 125 μm, 150 μm, 175 μm, 200 μm, 225
μm, 250 μm, 275 μm or 300 μm etc., it is not limited to cited numerical value, other unlisted numerical value in the numberical range
It is equally applicable.
Preferably, in step (1), the ferrite magnetic sheet includes nickel-zinc ferrite magnetic sheet, manganese-zinc ferrite magnetic sheet or nickel
Any one in copper zinc ferrite magnetic sheet.
As currently preferred technical solution, in step (1), the sample size chosen in each inductance value step-length range
>=100 piece, for example, 100,110,120,130,140,150,160,170,180,190 or
200 etc., if sample size is very few, subsequent obtained corresponding relationship error can be made excessive, lose industrial application value.
Preferably, the sample size chosen in each inductance value step-length range is identical.
As currently preferred technical solution, in step (2), the film that the pad pasting uses is poly terephthalic acid second two
Alcohol ester (PET) film.
As currently preferred technical solution, in step (3), the diameter of the steel rod is 30-50mm, such as 30mm,
35mm, 40mm, 45mm or 50mm etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range
It is equally applicable.
Preferably, in step (3), the diameter of the steel rod is 30mm, 40mm or 50mm.
Preferably, in step (3), the length of the steel rod is 20-40cm, for example, 20cm, 22cm, 24cm, 26cm,
28cm, 30cm, 32cm, 34cm, 36cm, 38cm or 40cm etc., it is not limited to cited numerical value, in the numberical range its
His unlisted numerical value is equally applicable.
As currently preferred technical solution, in step (3), the pressure is 0.1-0.5MPa, such as 0.1MPa,
0.2MPa, 0.3MPa, 0.4MPa or 0.5MPa etc., it is not limited to cited numerical value, interior other of the numberical range are not arranged
The numerical value of act is equally applicable.
As currently preferred technical solution, in step (3), the pad pasting sample of each inductance value step-length range is carried out
The method of grouping is the corresponding group of steel rod of each selection, additionally includes a control group.Control group can be used to obtain
The size of the variation of ferrite magnetic sheet inductance value caused by pad pasting.
As currently preferred technical solution, in step (3), the inductance of sample after sliver is tested with electric inductance measuring-testing instrument
Value.
Preferably, in step (3), the setpoint frequency of the inductance value of sample is 10KHz-13.56MHz, example after test sliver
As 10KHz, 50KHz, 100KHz, 128KHz, 150KHz, 300KHz, 400KHz, 500KHz, 1MHz, 1.2MHz, 1.4MHz,
1.5MHz, 2MHz, 3MHz, 4MHz, 5MHz, 6MHz, 7MHz, 8MHz, 9MHz, 10MHz, 11MHz, 12MHz, 13MHz or
13.56MHz etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, in step (3), test sliver after sample inductance value setpoint frequency be 128KHz, 6.78MHz or
13.56MHz。
As the further preferred technical solution of the method for the invention, the described method comprises the following steps:
(1) the step-length range of setting inductance value variation, the step-length range L T.LT.LT 0.1 of the inductance value variation, in same thickness
The sample for falling into corresponding inductance value range is chosen in the ferrite magnetic sheet equally formed, is chosen in each inductance value step-length range
Sample size >=100 and sample size it is identical, the ferrite magnetic sheet with a thickness of 20 μm -300 μm；
Wherein, the ferrite magnetic sheet includes nickel-zinc ferrite magnetic sheet, manganese-zinc ferrite magnetic sheet or nickel-copper-zinc ferrite magnetic
Any one in piece；
(2) polyethylene terephthalate film is pasted to the sample that step (1) is chosen, obtains pad pasting sample；
(3) diameter and length of steel rod are chosen, the diameter of the steel rod is 30mm, 40mm or 50mm, the length of the steel rod
Degree is 20-40cm, is grouped according to pad pasting sample of the steel rod of selection to each inductance value step-length range, the quantity ratio of grouping
The steel rod quantity of selection is 1 group more, and the corresponding group of the steel rod of each selection, includes additionally a control group, with the steel of selection
Rod carries out roll-in sliver to the pad pasting samples of respective sets under the same pressure, with electric inductance measuring-testing instrument with 128KHz, 6.78MHz or
The inductance value of sample after the setpoint frequency test sliver of 13.56MHz；
Wherein, the pressure is 0.1-0.5MPa；
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship；
(5) according to the inductance value of ferrite magnetic sheet to be processed, the inductance value and step (4) that are needed after pad pasting sliver
Obtained corresponding relationship obtains corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to iron to be processed
Oxysome magnetic sheet carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed, described to be processed
Ferrite magnetic sheet thickness and composition it is identical as step (1) the ferrite magnetic sheet.
Compared with prior art, the invention has the following advantages:
The method provided by the invention for changing ferrite magnetic piece performance is by data test-collection-analysis, after pad pasting
Sliver can change this phenomenon of magnetic sheet performance, it is established that iron before and after the steel rod diameter and length of roll-in sliver, pressure and sliver
The corresponding relationship of oxysome magnetic sheet inductance value controllably changes the performance of every a piece of magnetic sheet, may finally make product
Quality is with uniformity, and it is with uniformity to solve the problems, such as that the properties of product for industrially producing ferrite magnetic sheet are difficult to.
Specific embodiment
In order to better illustrate the present invention, it is easy to understand technical solution of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only simple example of the invention, does not represent or limit the scope of the present invention, this
Invention protection scope is subject to claims.
The following are typical but non-limiting embodiments of the invention:
Embodiment 1
The present embodiment changes ferrite magnetic piece performance as follows:
(1) for a thickness of 120 μm, frequency is a nickel-zinc ferrite magnetic sheet of 128KHz, take inductance value be 11.2~
Each 160,11.25,11.3~11.35,11.4~11.45,11.5~11.55 sample, inductance value variation step-length range be
0.05。
(2) polyethylene terephthalate (PET) film is pasted to the sample that step (1) is chosen, obtains pad pasting sample.
(3) length for choosing steel rod is 30cm, diameter 30mm, 40mm and 50mm, and each inductance value of step (1) is changed
The sample of step-length range be all divided into 4 groups, every group 40, with the steel rod of selection to the pad pasting sample of respective sets under 0.3MPa pressure
Product carry out roll-in sliver, and leave one group not sliver compareed, split with electric inductance measuring-testing instrument with the test of the setpoint frequency of 128KHz
The inductance value of sample after piece.
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship, as shown in table 1.
(5) according to be processed with a thickness of 120 μm, frequency is the nickel-zinc ferrite magnetic sheet of 128KHz (with magnetic described in step 1
The ingredient and component ratio of piece are all the same) inductance value, pair that the inductance value and step (4) needed after pad pasting sliver obtains
It should be related to, obtain corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite magnetic sheet to be processed
Roll-in sliver is carried out under corresponding pressure, is obtained inductance value and is met the ferrite magnetic sheet needed.
Table 1
Embodiment 2
The present embodiment changes ferrite magnetic piece performance as follows:
(1) for a thickness of 20 μm, frequency is a nickel-zinc ferrite magnetic sheet of 6.78MHz, take inductance value be 11.2~
Each 160,11.25,11.3~11.35,11.4~11.45,11.5~11.55 sample, inductance value variation step-length range be
0.05。
(2) polyethylene terephthalate (PET) film is pasted to the sample that step (1) is chosen, obtains pad pasting sample.
(3) length for choosing steel rod is 20cm, diameter 30mm, 40mm and 50mm, and each inductance value of step (1) is changed
The sample of step-length range be all divided into 4 groups, every group 40, with the steel rod of selection to the pad pasting sample of respective sets under 0.1MPa pressure
Product carry out roll-in sliver, and leave one group not sliver compareed, split with electric inductance measuring-testing instrument with the test of the setpoint frequency of 6.78MHz
The inductance value of sample after piece.
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship, as shown in table 2.
(5) according to be processed with a thickness of 20 μm, frequency is the nickel-zinc ferrite magnetic sheet of 6.78MHz (with magnetic described in step 1
The ingredient and component ratio of piece are all the same) inductance value, pair that the inductance value and step (4) needed after pad pasting sliver obtains
It should be related to, obtain corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite magnetic sheet to be processed
Roll-in sliver is carried out under corresponding pressure, is obtained inductance value and is met the ferrite magnetic sheet needed.
Table 2
Embodiment 3
The present embodiment changes ferrite magnetic piece performance as follows:
(1) for a thickness of 300 μm, frequency is a nickel-zinc ferrite magnetic sheet of 13.56MHz, and taking inductance value is 11.2
Each 160 ,~11.25,11.3~11.35,11.4~11.45,11.5~11.55 sample, the step-length range of inductance value variation
It is 0.05.
(2) polyethylene terephthalate (PET) film is pasted to the sample that step (1) is chosen, obtains pad pasting sample.
(3) length for choosing steel rod is 40cm, diameter 30mm, 40mm and 50mm, and each inductance value of step (1) is changed
The sample of step-length range be all divided into 4 groups, every group 40, with the steel rod of selection to the pad pasting sample of respective sets under 0.5MPa pressure
Product carry out roll-in sliver, and leave one group not sliver compareed, tested with electric inductance measuring-testing instrument with the setpoint frequency of 13.56MHz
The inductance value of sample after sliver.
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship, as shown in table 3.
(5) according to be processed with a thickness of 300 μm, nickel-zinc ferrite magnetic sheet that frequency is 13.56MHz (with described in step 1
The ingredient and component ratio of magnetic sheet are all the same) inductance value, what the inductance value and step (4) needed after pad pasting sliver obtained
Corresponding relationship obtains corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite magnetic to be processed
Piece carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed.
Table 3
Embodiment 4
The present embodiment changes ferrite magnetic piece performance as follows:
(1) for a thickness of 120 μm, frequency is a manganese-zinc ferrite magnetic sheet of 128KHz, take inductance value be 11.2~
Each 200,11.299,11.3~11.399,11.4~11.499,11.5~11.599 sample, the step-length model of inductance value variation
Enclose is 0.099.
(2) polyethylene terephthalate (PET) film is pasted to the sample that step (1) is chosen, obtains pad pasting sample.
(3) length for choosing steel rod is 20cm and 40cm, and diameter is 30mm and 50mm, that is, chooses the steel rod of 4 kinds of sizes, point
Not are as follows: long 20cm diameter 30mm, long 40cm diameter 30mm, long 40cm diameter 50mm and long 20cm diameter 50mm.Step (1) is every
The sample of the step-length range of a inductance value variation is all divided into 5 groups, and every group 40, with the steel rod of selection to phase under 0.3MPa pressure
The pad pasting sample that should organize carries out roll-in sliver, and leave one group not sliver compareed, with electric inductance measuring-testing instrument setting with 128KHz
Determine the inductance value of sample after frequency test sliver.
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship, as shown in table 4.
(5) according to be processed with a thickness of 120 μm, frequency is the manganese-zinc ferrite magnetic sheet of 128KHz (with magnetic described in step 1
The ingredient and component ratio of piece are all the same) inductance value, pair that the inductance value and step (4) needed after pad pasting sliver obtains
It should be related to, obtain corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite magnetic sheet to be processed
Roll-in sliver is carried out under corresponding pressure, is obtained inductance value and is met the ferrite magnetic sheet needed.
Table 4
Embodiment 5
The present embodiment changes ferrite magnetic piece performance as follows:
(1) for a thickness of 120 μm, frequency is a nickel-copper-zinc ferrite magnetic sheet of 128KHz, and taking inductance value is 11.2
Each 120 ,~11.25,11.3~11.35,11.4~11.45,11.5~11.55 sample, the step-length range of inductance value variation
It is 0.05.
(2) polyethylene terephthalate (PET) film is pasted to the sample that step (1) is chosen, obtains pad pasting sample.
(3) length for choosing steel rod is 30cm, diameter 40mm, and selection pressure is 0.2MPa and 0.4MPa, by step (1)
The sample of the step-length range of each inductance value variation is divided into 3 groups, and every group 40, be 30cm with length, and diameter is the steel of 40mm
Rod carries out roll-in sliver to the pad pasting samples of respective sets under relevant pressure, and leave one group not sliver compareed, use inductance
Tester tests the inductance value of sample after sliver with the setpoint frequency of 128KHz.
(4) to step (1) setting inductance value step-length range, step (3) choose steel rod diameter and length, pressure and
The sample inductance value measured after sliver is for statistical analysis, it is established that corresponding relationship, as shown in table 5.
(5) according to be processed with a thickness of 120 μm, nickel-copper-zinc ferrite magnetic sheet that frequency is 128KHz (with described in step 1
The ingredient and component ratio of magnetic sheet are all the same) inductance value, what the inductance value and step (4) needed after pad pasting sliver obtained
Corresponding relationship obtains corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite magnetic to be processed
Piece carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed.
Table 5
Based on the above embodiments it is found that the method provided by the invention for changing ferrite magnetic piece performance passes through data test-
Collection-analysis can change this phenomenon of magnetic sheet performance using sliver after pad pasting, it is established that the steel rod diameter and length of roll-in sliver
The corresponding relationship of ferrite magnetic sheet inductance value before and after degree, pressure and sliver can carry out controllably the performance of every a piece of magnetic sheet
Change, the quality of product may finally be made with uniformity.
The Applicant declares that the present invention is explained by the above embodiments method detailed of the invention, but the present invention not office
Be limited to above-mentioned method detailed, that is, do not mean that the invention must rely on the above detailed methods to implement.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary composition to each raw material of product of the present invention
Addition, selection of concrete mode etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of method for changing ferrite magnetic piece performance, which is characterized in that the described method comprises the following steps:
(1) the step-length range of setting inductance value variation, chooses in the ferrite magnetic sheet that same thickness equally forms and falls into accordingly
The sample of inductance value range；
(2) the sample pad pasting chosen to step (1), obtains pad pasting sample；
(3) diameter and length for choosing steel rod are carried out according to pad pasting sample of the steel rod of selection to each inductance value step-length range
Grouping, each group carry out roll-in sliver under selected pressure with corresponding steel rod, test the inductance value of sample after sliver；
(4) to the steel rod diameter and length, pressure and sliver of the inductance value step-length range of step (1) setting, step (3) selection
The sample inductance value measured afterwards is for statistical analysis, it is established that corresponding relationship；
(5) according to the inductance value of ferrite magnetic sheet to be processed, the inductance value and step (4) needed after pad pasting sliver is obtained
Corresponding relationship, obtain corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite to be processed
Magnetic sheet carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed, the iron to be processed
The thickness and composition of oxysome magnetic sheet are identical as step (1) the ferrite magnetic sheet.
2. the method according to claim 1, wherein in step (1), the step-length range L T.LT.LT of the inductance value variation
0.1。
3. method according to claim 1 or 2, which is characterized in that in step (1), the ferrite magnetic sheet with a thickness of
20μm-300μm；
Preferably, in step (1), the ferrite magnetic sheet includes nickel-zinc ferrite magnetic sheet, manganese-zinc ferrite magnetic sheet or ambrose alloy zinc
Any one in ferrite magnetic sheet.
4. method according to any one of claim 1-3, which is characterized in that in step (1), each inductance value step-length model
Enclose middle selection sample size >=100；
Preferably, the sample size chosen in each inductance value step-length range is identical.
5. method according to any of claims 1-4, which is characterized in that in step (2), film that the pad pasting uses
For polyethylene terephthalate film.
6. method according to any one of claims 1-5, which is characterized in that in step (3), the diameter of the steel rod is
30-50mm；
Preferably, in step (3), the diameter of the steel rod is 30mm, 40mm or 50mm；
Preferably, in step (3), the length of the steel rod is 20-40cm.
7. method according to claim 1 to 6, which is characterized in that in step (3), the pressure is 0.1-
0.5MPa。
8. method according to any one of claims 1-7, which is characterized in that in step (3), to each inductance value step-length
The method that the pad pasting sample of range is grouped is the corresponding group of steel rod of each selection, additionally includes a control group.
9. method according to claim 1 to 8, which is characterized in that in step (3), tested with electric inductance measuring-testing instrument
The inductance value of sample after sliver；
Preferably, in step (3), the setpoint frequency of the inductance value of sample is 10KHz-13.56MHz after test sliver；
Preferably, in step (3), test sliver after sample inductance value setpoint frequency be 128KHz, 6.78MHz or
13.56MHz。
10. method according to claim 1 to 9, which is characterized in that the described method comprises the following steps:
(1) the step-length range of setting inductance value variation, the step-length range L T.LT.LT 0.1 of the inductance value variation are same in same thickness
The sample for falling into corresponding inductance value range, the sample chosen in each inductance value step-length range are chosen in the ferrite magnetic sheet of composition
Quantity >=100 and sample size it is identical, the ferrite magnetic sheet with a thickness of 20 μm -300 μm；
Wherein, the ferrite magnetic sheet includes in nickel-zinc ferrite magnetic sheet, manganese-zinc ferrite magnetic sheet or nickel-copper-zinc ferrite magnetic sheet
Any one；
(2) polyethylene terephthalate film is pasted to the sample that step (1) is chosen, obtains pad pasting sample；
(3) diameter and length of steel rod are chosen, the diameter of the steel rod is 30mm, 40mm or 50mm, and the length of the steel rod is
20-40cm is grouped according to pad pasting sample of the steel rod of selection to each inductance value step-length range, and the quantity of grouping is than choosing
More 1 groups of steel rod quantity, the corresponding group of the steel rod of each selection includes additionally a control group, is existed with the steel rod of selection
Roll-in sliver is carried out to the pad pasting sample of respective sets under same pressure, with electric inductance measuring-testing instrument with 128KHz, 6.78MHz or
The inductance value of sample after the setpoint frequency test sliver of 13.56MHz；
Wherein, the pressure is 0.1-0.5MPa；
(4) to the steel rod diameter and length, pressure and sliver of the inductance value step-length range of step (1) setting, step (3) selection
The sample inductance value measured afterwards is for statistical analysis, it is established that corresponding relationship；
(5) according to the inductance value of ferrite magnetic sheet to be processed, the inductance value and step (4) needed after pad pasting sliver is obtained
Corresponding relationship, obtain corresponding steel rod length and diameter and corresponding pressure, and with the steel rod to ferrite to be processed
Magnetic sheet carries out roll-in sliver under corresponding pressure, obtains inductance value and meets the ferrite magnetic sheet needed, the iron to be processed
The thickness and composition of oxysome magnetic sheet are identical as step (1) the ferrite magnetic sheet.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158232A (en) * | 2016-08-12 | 2016-11-23 | 广州市晶磁电子科技有限公司 | Digitizing plate antifreeze plate and manufacture method thereof |
| CN107216135A (en) * | 2017-05-17 | 2017-09-29 | 四川诺威胜电子科技有限公司 | NiCuZn ferrites magnetic sheet and preparation method |
| CN108053997A (en) * | 2017-12-22 | 2018-05-18 | 山东恒瑞磁电科技有限公司 | A kind of screening technique for improving FERRITE CORE magnetic conductivity |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158232A (en) * | 2016-08-12 | 2016-11-23 | 广州市晶磁电子科技有限公司 | Digitizing plate antifreeze plate and manufacture method thereof |
| CN107216135A (en) * | 2017-05-17 | 2017-09-29 | 四川诺威胜电子科技有限公司 | NiCuZn ferrites magnetic sheet and preparation method |
| CN108053997A (en) * | 2017-12-22 | 2018-05-18 | 山东恒瑞磁电科技有限公司 | A kind of screening technique for improving FERRITE CORE magnetic conductivity |
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