CN109435017A - A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure - Google Patents
A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure Download PDFInfo
- Publication number
- CN109435017A CN109435017A CN201811427909.XA CN201811427909A CN109435017A CN 109435017 A CN109435017 A CN 109435017A CN 201811427909 A CN201811427909 A CN 201811427909A CN 109435017 A CN109435017 A CN 109435017A
- Authority
- CN
- China
- Prior art keywords
- permanent
- magnet ferrite
- magnetic field
- press
- connecting plate
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a kind of permanent-magnet ferrite hydraulic press magnetic field optimization structures, including permanent-magnet ferrite press upper cylinder half, magnetic core, magnetic core connecting plate, upper mold connecting plate, upper mold, permanent-magnet ferrite product, lower die, mould bases, the cylinder under permanent-magnet ferrite press set gradually from top to bottom, it is attached between cylinder by permanent-magnet ferrite press guide post under permanent-magnet ferrite press upper cylinder half and permanent-magnet ferrite press；Magnetic core connecting plate and upper mold connecting plate form the poly- magnetic mechanism of inverted trapezoidal.The forming magnetic field that magnetizes that the present invention can greatly improve permanent-magnet ferrite hydraulic press makes it increase 3000OE or so under original magnetic field strength, substantially increase magnetic field of press upgrading efficiency, reduce electric cost and maintenance cost of the press among use process, during magnetic field transmission, generated forming magnetic field can be acted on product, it has been easily reached the use standard of external forming magnetic field, can be very good the magnetic parameter for improving permanent-magnet ferrite product.
Description
Technical field
The present invention relates to the technical field of permanent-magnet ferrite hydraulic press more particularly to a kind of permanent-magnet ferrite hydraulic press magnetic fields
Optimize structure.
Background technique
Permanent-magnet ferrite is that eighties of last century the eighties introduce domestic project, and the lead-time is shorter, existing domestic main
It is to produce based on mid and low-end products.Reason has much among these, such as the orientation problem of ferrite application end product；Iron oxide red
Or the purification problem of the product raw material of iron phosphorus；One defective material sintering processing and a formulation challenges；It is secondary grind sintering and its
Secondary formulation challenges；And the problems such as domestic corollary equipment production standard is low.But with the supply side knot of national strategy
Structure reform --- traditional manufacture production capacity optimization and upgrading, so the key corollary equipment for accordingly affecting product optimization upgrading is convex
Show the necessity and importance for needing preferential upgrading.The forming magnetic field of high performance ferrite material foreign countries is generally wanted
It asks in H >=796KA/m, although domestic enterprise is all it is well recognized that the size of molding magnetic has shadow to the ferrite product degree of orientation at present
It rings, but payes attention among actual production inadequate.It is domestic generally to use air-cooled technology, 60000 ampere-turn -80000 of magnetizing coil peace
Circle makes magnetic field of press in 7000-8000OE or so, and its external forming magnetic field (uses big peace due to external using water-cooling pattern
The hot-wire coil of the number of turns ensures with producing powerful forming magnetic field, for cooling rapidly with hold-in winding material resistance stablize from
And realize the purpose of the stable magnetic field when long-time uses) generally it is significantly larger than domestic forming magnetic field in 10000-20000OE
Standard.
Since the magnetic core in the magnetic field line packet of domestic ferrite hydraulic press all uses 20# mild steel as magnetic core, in this way meeting
Weaken magnetic field caused by press magnetizing coil significantly, eventually leads to the magnetic field that product receives and weaken significantly.And 20# low-carbon
Steel its magnetic induction intensity and magnetic conductivity and its unstable after being magnetized, it is also unstable to also result in magnetic field.In addition, magnetic field transmission
In the process in magnetic core connecting plate among the magnetic field transmission process of --- upper mold connecting plate --- upper mold, due to unreasonable structural design
The case where there are apparent magnetic flux leakage, prevent it from acting on generated forming magnetic field on product, to the magnetic of product
Performance parameter has an impact.
Summary of the invention
Based on the above the deficiencies in the prior art, technical problem solved by the invention is to provide a kind of permanent-magnet ferrite oil
Magnetic field of press optimizes structure, hence it is evident that improves the forming magnetic field that magnetizes of permanent-magnet ferrite hydraulic press, increase acts on permanent-magnet ferrite
Magnetic field strength on product.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions: the present invention provides a kind of permanent magnetism
Ferrite hydraulic press magnetic field optimization structure, permanent-magnet ferrite press upper cylinder half, magnetic core, magnetic core including setting gradually from top to bottom connect
Cylinder under fishplate bar, upper mold connecting plate, upper mold, permanent-magnet ferrite product, lower die, mould bases, permanent-magnet ferrite press, the permanent magnet oxygen
It is attached between cylinder by permanent-magnet ferrite press guide post under body press upper cylinder half and permanent-magnet ferrite press；
The periphery of the magnetic core is equipped with magnetizing coil, and the magnetic field for the generation that is powered is conducted by magnetic core, and passes sequentially through magnetic
Cylinder, permanent magnet oxygen under core connecting plate, upper mold connecting plate, upper mold, permanent-magnet ferrite product, lower die, mould bases, permanent-magnet ferrite press
Body press guide post and permanent-magnet ferrite press upper cylinder half, realize the closed circuit in magnetic field；
The magnetic core connecting plate and upper mold connecting plate form the poly- magnetic mechanism of inverted trapezoidal.
Embodiment as a preferred embodiment of the above technical solution, permanent-magnet ferrite hydraulic press provided in an embodiment of the present invention magnetic field
Optimizing structure further comprises some or all of following technical characteristic:
Optionally, the magnetic core is made of supermalloy or permalloy.
Optionally, the magnetic core is made of iron-nickel alloy, and wherein nickel accounts for 36% or 50%.
Optionally, the magnetic core is made of ferro-silicium, and wherein silicon accounts for 4%.
Optionally, the magnetic core is made of ferrocobalt, and wherein cobalt accounts for 50%.
As an improvement of the above technical solution, the mould bases includes mould bases upper junction plate, mould bases lower connecting plate and for connecting
Connect the bearing type die set guide pin of the mould bases upper junction plate and mould bases lower connecting plate.
Further, the bottom end of the lower die is connected with lower die connecting plate, and the lower die connecting plate is connected to mould bases floating
On plate, bracket is additionally provided between cylinder under the mould bases float plate and permanent-magnet ferrite press；
The bearing type die set guide pin passes through the mould bases float plate.
Compared with prior art, technical solution of the present invention has the following beneficial effects:
Permanent-magnet ferrite hydraulic press magnetic field optimization structure of the invention can greatly improve filling for permanent-magnet ferrite hydraulic press
Magnetic forming magnetic field makes it increase 3000OE or so under original magnetic field strength, in this way can be so that not manufacturing high-power magnetize
In the case that line packet and water-cooling system are used cooperatively, realize that the common press-molding magnetic field of Current Domestic is easily reached 10000OE
Above effect substantially increases magnetic field of press upgrading efficiency, reduces electric cost and dimension of the press among use process
Protect cost, during magnetic field transmission, generated forming magnetic field can be acted on product, be easily reached it is external at
The use standard in type magnetic field can be very good the magnetic parameter for improving permanent-magnet ferrite product.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, below in conjunction with preferred embodiment, and cooperates attached drawing, detailed description are as follows.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 is permanent-magnet ferrite hydraulic press structural schematic diagram of the invention；
Fig. 2 is the structural representation of the poly- magnetic mechanism of inverted trapezoidal of permanent-magnet ferrite hydraulic press magnetic field optimization structure of the invention
Figure；
Fig. 3 is the longitudinal section view of Fig. 2；
Fig. 4 is the magnetic field strength-of the magnetic core of the different materials in the permanent-magnet ferrite hydraulic press magnetic field optimization structure of invention
Magnetic induction intensity figure.
Specific embodiment
The embodiment of the invention will now be described in detail with reference to the accompanying drawings, and as part of this specification passes through
Embodiment illustrates the principle of the present invention, and other aspects of the present invention, feature and its advantage will become by the detailed description
It is very clear.In the attached drawing of institute's reference, the same or similar component is indicated using identical drawing reference numeral in different figures.
As shown in Figure 1-Figure 3, permanent-magnet ferrite hydraulic press magnetic field optimization structure of the invention includes successively setting from top to bottom
Permanent-magnet ferrite press upper cylinder half 10, magnetic core 20, magnetic core connecting plate 30, upper mold connecting plate 40, upper mold 50, the permanent-magnet ferrite set produce
Cylinder 90 under product 60, lower die 70, mould bases 80, permanent-magnet ferrite press, the permanent-magnet ferrite press upper cylinder half 10 and permanent-magnet ferrite
It is attached between cylinder 90 by permanent-magnet ferrite press guide post 11 under press.The periphery of the magnetic core 20 is equipped with magnetizing coil
21, the magnetic field for the generation that is powered is conducted by magnetic core 20, and pass sequentially through magnetic core connecting plate 30, upper mold connecting plate 40, upper mold 50,
Cylinder 90 under permanent-magnet ferrite product 60, lower die 70, mould bases 80, permanent-magnet ferrite press, permanent-magnet ferrite press guide post 11 and forever
Magnetic ferrites press upper cylinder half 10, realizes the closed circuit in magnetic field.
Specifically, the mould bases 80 is including mould bases upper junction plate 81, mould bases lower connecting plate 82 and for connecting the mould bases
The bearing type die set guide pin 83 of upper junction plate 81 and mould bases lower connecting plate 82.In addition, the bottom end of the lower die 70 is connected with lower die connecting plate
71, the lower die connecting plate 71 is connected in mould bases float plate 72, cylinder under the mould bases float plate 72 and permanent-magnet ferrite press
Bracket 73 is additionally provided between 90, the bearing type die set guide pin 83 passes through the mould bases float plate 72.
Since the magnetic core 20 in the magnetic field line packet of domestic ferrite hydraulic press is all using 20# mild steel as magnetic core, in this way
Magnetic field caused by press magnetizing coil 21 can be weakened significantly, the magnetic field that product receives is eventually led to and weaken significantly.And 20#
Mild steel its magnetic induction intensity and magnetic conductivity and its unstable after being magnetized, it is also unstable to also result in magnetic field, also to product
Magnetic parameter have an impact.
Due to knot among magnetic core connecting plate-upper mold connecting plate-upper mold magnetic field transmission process during magnetic field transmission
It is pure in apparent magnetic flux leakage that structure designs unreasonable situation, prevent its from by generated forming magnetic field act on product it
On, equally have an impact to the magnetic parameter of product.
Magnetic flux formula: Φ=BS
Magnetic conductivity, English name: magnetic permeability characterizes the physical quantity of magnetic medium magnetism.It indicates in sky
Between or after the coil in magnetic core space flows through electric current, generate magnetic flux resistance or its energy that the magnetic line of force is connected in magnetic field
Power, its formula μ=B/H, wherein H=magnetic field strength, B=magnetic induction intensity, μ are the magnetic conductivity or absolute permeability of medium.
Energy density=the B in magnetic field2/2μ
The calculation formula of magnetic field strength: H=N × I/Le
In formula: H is magnetic field strength, unit A/m；N is the number of turns of magnet exciting coil；I is exciting current (measured value), unit
For A；Le is the effective magnetic circuit length of test sample, unit m.Magnetic field strength is a token state of coil, reflection
The power of magnetic field sources.
Magnetic core is not influencing permanent-magnet ferrite hydraulic press magnetizing coil peace for the importance in magnetic field known to above formula
The number of turns and under the premise of magnetizing in the case where electric current, by using high and stablize magnetic conductivity, high magnetic flux density material settling out and bright
The aobvious forming magnetic field for improving press.
Due to existing manufacturing status situation, there is equipment to provide forming magnetic field if producing high-end product not enough
Situation, use instead the coil of big number of ampere turns again Structure of need complex maintenance water-cooling system at high cost to the line packet that magnetizes of big number of ampere turns
It is cooled down, so if using big and stable magnetic induction intensity material and rationally improving the leakage field situation of magnetic conductive part,
It is the preferred plan in current transformation and optimization magnetic field.
As shown in figure 4, using magnetic field strength-magnetic induction intensity figure of the magnetic core of different materials, 1- supermalloy, the slope 2-
Not alloy, 3-Fe-Ni36% alloy, 4-Fe-Ni50%, 5-Fe-Si~4%, 6- pure iron, 7-Fe-Co50% alloy, wherein 6-
The small long-time service of the yield strength of pure iron is easily deformed it is not recommended that using, and therefore, magnetic core 20 of the invention can be used super perm and close
Gold or permalloy, iron-nickel alloy, ferro-silicium or ferrocobalt are made, and wherein the nickel in iron-nickel alloy accounts for 36% or 50%,
Silicon in ferro-silicium accounts for 4%, and the cobalt in ferrocobalt accounts for 50%.
Connected to establish leakproof magnetic mechanism, the present invention between upper mold 50 using one kind by magnetic core in the magnetic core 20 for the line packet that magnetizes
Fishplate bar 30 and upper mold connecting plate 40 form the poly- magnetic mechanism of inverted trapezoidal, and inspiration is equivalent to from pyramid structure by pyramid
Shape, which turns around, is used to connecting mold upper mold 50 for top removal, improves local magnetic strength with the method for reducing magnetic conduction cross-sectional area
Answer intensity, greatly reduce leakage field situation of the magnetic line of force among conductive process, increase act on permanent-magnet ferrite product it
On magnetic field strength.
Scheme in summary, permanent-magnet ferrite hydraulic press magnetic field optimization structure of the invention can greatly improve permanent magnet oxygen
The forming magnetic field that magnetizes of body hydraulic press makes it increase 3000OE or so under original magnetic field strength, in this way can be so that not making
In the case where making high-power magnetize line packet and water-cooling system, realize that the common press-molding magnetic field of Current Domestic is easily reached
The effect of 10000OE or more substantially increases magnetic field of press upgrading efficiency in this way, reduces use of the press among use process
Generated forming magnetic field during magnetic field transmission, can be acted on product, easily be reached by electric cost and maintenance cost
The use standard for having arrived external forming magnetic field can be very good the magnetic parameter for improving permanent-magnet ferrite product.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for the those of ordinary skill in field of the present invention, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (7)
1. a kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure, which is characterized in that including the permanent magnetism set gradually from top to bottom
Ferrite press upper cylinder half, magnetic core, magnetic core connecting plate, upper mold connecting plate, upper mold, permanent-magnet ferrite product, lower die, mould bases, permanent magnetism
Cylinder under ferrite press passes through permanent-magnet ferrite pressure under the permanent-magnet ferrite press upper cylinder half and permanent-magnet ferrite press between cylinder
Machine guide post is attached；
The periphery of the magnetic core is equipped with magnetizing coil, and the magnetic field for the generation that is powered is conducted by magnetic core, and passes sequentially through magnetic core company
Cylinder, permanent-magnet ferrite pressure under fishplate bar, upper mold connecting plate, upper mold, permanent-magnet ferrite product, lower die, mould bases, permanent-magnet ferrite press
Machine guide post and permanent-magnet ferrite press upper cylinder half, realize the closed circuit in magnetic field；
The magnetic core connecting plate and upper mold connecting plate form the poly- magnetic mechanism of inverted trapezoidal.
2. permanent-magnet ferrite hydraulic press magnetic field optimization structure as described in claim 1, it is characterised in that: the magnetic core is using super
Permalloy or permalloy are made.
3. permanent-magnet ferrite hydraulic press magnetic field optimization structure as described in claim 1, it is characterised in that: the magnetic core uses iron
Nickel alloy is made, and wherein nickel accounts for 36% or 50%.
4. permanent-magnet ferrite hydraulic press magnetic field optimization structure as described in claim 1, it is characterised in that: the magnetic core uses iron
Silicon alloy is made, and wherein silicon accounts for 4%.
5. permanent-magnet ferrite hydraulic press magnetic field optimization structure as described in claim 1, it is characterised in that: the magnetic core uses iron
Cobalt alloy is made, and wherein cobalt accounts for 50%.
6. permanent-magnet ferrite hydraulic press magnetic field optimization structure as described in claim 1, it is characterised in that: the mould bases includes mould
Frame upper junction plate, mould bases lower connecting plate and the bearing type die set guide pin for connecting the mould bases upper junction plate and mould bases lower connecting plate.
7. permanent-magnet ferrite hydraulic press magnetic field optimization structure as claimed in claim 6, it is characterised in that: the bottom end of the lower die
It is connected with lower die connecting plate, the lower die connecting plate is connected in mould bases float plate, the mould bases float plate and permanent-magnet ferrite
Bracket is additionally provided under press between cylinder；
The bearing type die set guide pin passes through the mould bases float plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427909.XA CN109435017A (en) | 2018-11-27 | 2018-11-27 | A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427909.XA CN109435017A (en) | 2018-11-27 | 2018-11-27 | A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109435017A true CN109435017A (en) | 2019-03-08 |
Family
ID=65554954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811427909.XA Pending CN109435017A (en) | 2018-11-27 | 2018-11-27 | A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109435017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111696750A (en) * | 2019-03-14 | 2020-09-22 | 北京小米移动软件有限公司 | Production line jig for magnetizing connector, magnetizing method and magnetizing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06188138A (en) * | 1992-12-16 | 1994-07-08 | Hitachi Metals Ltd | Method and apparatus for wet molding |
| CN2881913Y (en) * | 2005-12-31 | 2007-03-21 | 横店集团东磁有限公司 | Special magnetic-field orientation forming module |
| CN101256898A (en) * | 2008-03-27 | 2008-09-03 | 深圳市天盈德科技有限公司 | Method and apparatus for forming of radiation orientating round ring-shaped magnetic body |
| CN204720307U (en) * | 2015-07-14 | 2015-10-21 | 都江堰市恒通磁电有限公司 | A kind of press preparing ferrite permanent-magnet element |
| CN205406285U (en) * | 2016-03-09 | 2016-07-27 | 横店集团东磁股份有限公司 | Permanent magnetic ferrite embossing mold structure of signing an undertaking |
| CN205818109U (en) * | 2016-07-08 | 2016-12-21 | 横店集团东磁股份有限公司 | A kind of permanent magnetic ferrite magnetic shoe mould |
| CN107958776A (en) * | 2017-09-30 | 2018-04-24 | 浙江凯文磁钢有限公司 | A kind of method for improving the permanent-magnet ferrite rectangular magnet shaping degree of orientation |
| CN108858678A (en) * | 2018-06-04 | 2018-11-23 | 德昌电机（南京）有限公司 | A kind of opposite sex ferrite magnetic shoe double end rapidform machine and forming method |
-
2018
- 2018-11-27 CN CN201811427909.XA patent/CN109435017A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06188138A (en) * | 1992-12-16 | 1994-07-08 | Hitachi Metals Ltd | Method and apparatus for wet molding |
| CN2881913Y (en) * | 2005-12-31 | 2007-03-21 | 横店集团东磁有限公司 | Special magnetic-field orientation forming module |
| CN101256898A (en) * | 2008-03-27 | 2008-09-03 | 深圳市天盈德科技有限公司 | Method and apparatus for forming of radiation orientating round ring-shaped magnetic body |
| CN204720307U (en) * | 2015-07-14 | 2015-10-21 | 都江堰市恒通磁电有限公司 | A kind of press preparing ferrite permanent-magnet element |
| CN205406285U (en) * | 2016-03-09 | 2016-07-27 | 横店集团东磁股份有限公司 | Permanent magnetic ferrite embossing mold structure of signing an undertaking |
| CN205818109U (en) * | 2016-07-08 | 2016-12-21 | 横店集团东磁股份有限公司 | A kind of permanent magnetic ferrite magnetic shoe mould |
| CN107958776A (en) * | 2017-09-30 | 2018-04-24 | 浙江凯文磁钢有限公司 | A kind of method for improving the permanent-magnet ferrite rectangular magnet shaping degree of orientation |
| CN108858678A (en) * | 2018-06-04 | 2018-11-23 | 德昌电机（南京）有限公司 | A kind of opposite sex ferrite magnetic shoe double end rapidform machine and forming method |
Non-Patent Citations (1)
| Title |
|---|
| 李恒德，等，: "《现代材料科学与工程辞典》", 31 August 2001, 山东科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111696750A (en) * | 2019-03-14 | 2020-09-22 | 北京小米移动软件有限公司 | Production line jig for magnetizing connector, magnetizing method and magnetizing device |
| CN111696750B (en) * | 2019-03-14 | 2022-11-04 | 北京小米移动软件有限公司 | Production line jig for magnetizing connector, magnetizing method and magnetizing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102377363B (en) | Dual-permanent-magnet compensation bias magnetic circuit of giant magnetostrictive actuator | |
| CN101483094A (en) | Magnetizing apparatus and magnetizing device | |
| CN103567439A (en) | Oriented pressing device and method for large-height-to-diameter-ratio radiation ring | |
| CN105391039B (en) | A kind of parallel connection type magnetic saturation fault current limiter based on rare earth permanent-magnetic material | |
| CN109435017A (en) | A kind of permanent-magnet ferrite hydraulic press magnetic field optimization structure | |
| CN201829323U (en) | Clamping piece magnetic shielding structure in transformer | |
| CN203437641U (en) | Orientation pressing device of radiation ring with large height-diameter ratio | |
| CN107331500A (en) | One kind is used for special radial magnetic-field orientation forming module | |
| CN206163305U (en) | Convenient and practical's novel current transformer | |
| CN204632536U (en) | The electrical transformer cores structure of low no-load loss | |
| CN207134233U (en) | One kind is used for special radial magnetic-field orientation forming module | |
| CN203444970U (en) | Orientation pressing device of radiation ring of large height-diameter ratio | |
| CN2478715Y (en) | Four-cylinder multi-purpose rare-earth permanent-magnet radiation orientation magnetic field automatic press | |
| CN110189884B (en) | Planar micro-polar-distance multi-pole magnetizing method | |
| CN209544103U (en) | A kind of inductor suitable for high current | |
| CN108269669B (en) | A method of preparing neodymium iron boron magnetic body | |
| CN104439234A (en) | Preparing method for nickel-silicon-aluminum soft magnetic material doped with rare earth elements | |
| CN202824654U (en) | Sintered Nd-Fe-B pressing mold | |
| CN101118806A (en) | Amorphous ultracrystallite iron core manufacturing method | |
| CN201112115Y (en) | Transformer | |
| CN218602199U (en) | Wafer proton irradiation superconducting scanning magnet structure for reducing eddy current | |
| CN2606097Y (en) | Electromagnetic crane | |
| CN101989783A (en) | Method for manufacturing generators and electric motors by using ferromagnetic materials and paramagnetic materials | |
| CN104167952B (en) | A kind of permanent magnet bias magnetic circuit device being applicable to giant magnetostrictive driver actuator | |
| CN219553373U (en) | Magnetic integrated switching power supply transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |
|
| RJ01 | Rejection of invention patent application after publication |