CN110143821A - The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite - Google Patents
The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite Download PDFInfo
- Publication number
- CN110143821A CN110143821A CN201910550498.1A CN201910550498A CN110143821A CN 110143821 A CN110143821 A CN 110143821A CN 201910550498 A CN201910550498 A CN 201910550498A CN 110143821 A CN110143821 A CN 110143821A
- Authority
- CN
- China
- Prior art keywords
- adhesive
- dry
- opposite sex
- mixed
- magnet ferrite
- 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
- 239000000853 adhesive Substances 0.000 title claims abstract description 45
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 45
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 21
- 238000000465 moulding Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 title claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 239000012188 paraffin wax Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 9
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 9
- 239000008116 calcium stearate Substances 0.000 claims abstract description 9
- 239000011812 mixed powder Substances 0.000 claims abstract description 8
- 239000006247 magnetic powder Substances 0.000 claims description 25
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 abstract description 13
- 241000723346 Cinnamomum camphora Species 0.000 abstract description 13
- 229960000846 camphor Drugs 0.000 abstract description 13
- 229930008380 camphor Natural products 0.000 abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 229910052681 coesite Inorganic materials 0.000 description 12
- 229910052593 corundum Inorganic materials 0.000 description 12
- 229910052906 cristobalite Inorganic materials 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 12
- 229910052682 stishovite Inorganic materials 0.000 description 12
- 229910052905 tridymite Inorganic materials 0.000 description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 description 12
- 238000005245 sintering Methods 0.000 description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- HOWGUJZVBDQJKV-UHFFFAOYSA-N docosane Chemical compound CCCCCCCCCCCCCCCCCCCCCC HOWGUJZVBDQJKV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ZYURHZPYMFLWSH-UHFFFAOYSA-N octacosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC ZYURHZPYMFLWSH-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 208000005392 Spasm Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63496—Bituminous materials, e.g. tar, pitch
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Abstract
This application discloses a kind of production methods of dry-pressing opposite sex permanent-magnet ferrite molding adhesive, in turn include the following steps: S1. mixes the paraffin that partial size is 5-25mm with calcium stearate mass ratio 1:1；S2. the mixed material in step S1 is crushed with low temperature liquid nitrogen comminuting method, obtains 0.8-2.5 μm of mixed powder；S3. the mixed powder is uniformly mixed with hot ethanol mass ratio 1:1.25 and adhesive is made.The advantage of the invention is that the harm of the person and to the pollution of environment caused by solving due to using camphor, while its price is far below camphor, largely reduces production cost.
Description
Technical field
This application involves a kind of production methods of dry-pressing opposite sex permanent-magnet ferrite molding adhesive.
Background technique
Adhesive is the key that dry method pressing under magnetic field, the degree of orientation and blank of magnetic-particle when it directly affects pressing under magnetic field
Mechanical strength, ideal adhesive should have a duality, that is, have certain lubricity and dispersibility, and have certain viscous
Knot property, substantially using the mixture of camphor and calcium stearate in industrial production at present, camphor is in room temperature as forming adhesive
Under it is readily volatilized, generate the gas of a large amount of penetrating odors, there is certain harm to human body, while environment will also result in very big
Pollution, if worker's large dosage contact, will cause cardiomotility paralysis, cause serious spasm, although also there is a small amount of document to mention
Out using substances such as synthetic waxs, but its complicated moulding process, be not suitable for industrial production.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of dry-pressing opposite sex permanent-magnet ferrite molding adhesive, can keep away
To the harm of the person and to the pollution of environment caused by exempting from due to using camphor, while its price is far below camphor, largely
On reduce production cost, and be sintered the dry-pressing opposite sex permanent-magnet ferrite for providing superior magnetic property.
To achieve the above object, the invention provides the following technical scheme:
The embodiment of the present application discloses a kind of production method of dry-pressing opposite sex permanent-magnet ferrite molding adhesive, successively wraps
Include following steps:
S1 mixes the paraffin that partial size is 5-25mm with calcium stearate mass ratio 1:1；
Mixed material in step S1 is crushed by S2 with low temperature liquid nitrogen comminuting method, obtains 0.8-2.5 μm of mixed powder；
The mixed powder is uniformly mixed by S3 with hot ethanol mass ratio 1:1.25 is made adhesive.
Preferably, in the production method of above-mentioned dry-pressing opposite sex permanent-magnet ferrite molding adhesive, adhesive addition
Amount is the 3.2-4.0% of magnetic powder weight.
Preferably, in the production method of above-mentioned dry-pressing opposite sex permanent-magnet ferrite molding adhesive, the low temperature liquid nitrogen
Comminuting method includes the following steps: that mixed material is cooling by liquid nitrogen, merging pulverizer inner cavity, is crushed.
Paraffin is white, tasteless solid, and in 47 DEG C of -64 DEG C of fusings, density about 0.9g/cm3 is not soluble in water, is melted into heat
Ethyl alcohol, paraffin are general industry paraffin, but not limited to this paraffin is the mixture of solid-state higher alkane, point of main component
Minor is CnH2n+2, wherein n=17~35, main component are linear paraffin, also the alkane on a small quantity with individual branches and belt length side
The monocyclic naphthenes of chain, mainly n-docosane (C in linear paraffin22H46) and positive octacosane (C28H58)。
The working principle of low temperature liquid nitrogen comminuting method: using liquid nitrogen as cold source, pulverized material passes through cold deep cooling crush machine system
But after realizing embrittlement easily crushing state at low temperature, into mechanical crusher cavity in pass through impeller high speed rotation, mixed material
With blade, fluted disc, mutual repeated stock between material and material is collided, shearing, under the comprehensive functions such as friction, reaches crushing
Effect uses liquid nitrogen as abrasive media, realizes that ultralow temperature crushes, fineness reaches a μm rank.
Paraffin powder in adhesive is in molten state at 50-200 DEG C, volatilizees and completes before 500 DEG C, when it is in molten state
When, wax powder is melted in generation wraps up magnetic powder again, is avoided that bee-hole occur in cold cracking and sintered body surface；The adhesive simultaneously
Also have good lubricity, then reduce forming process in ferrite particle rotation frictional force, be conducive to improve particle and
The degree of orientation of magnetocrystalline.
The additive amount of the adhesive is the 3.2-4.0% of magnetic powder weight, and additive amount is very few, cannot play effect, particle and
The magnetocrystalline degree of orientation is bad, and mouldability is deteriorated, and additive amount is excessive, the carbonization of organic matter when will lead to sintering and the density for making sintered body
Decline, makes magnetic property be deteriorated.
The present invention has the advantages that
1, adhesive of the invention is that paraffin and calcium stearate 1:1 are mixed, and is environmental-friendly substance, in production process
In it is harmless, there are no pollution to the environment；
2, the production cost of dry production anisotropic permanent magnetic ferrite product can be greatly lowered using the present invention；
3, the adhesive produces the remanent magnetism Br of product, magnetic strength coercivity H b, intrinsic coercivity Hcj, magnetic energy product BH,
Product same or slightly above using camphor as adhesive can be reached.
Specific embodiment
The binder performance that the present invention obtains is illustrated below in conjunction with embodiment.
Prepare adhesive:
S1 mixes the paraffin that partial size is 5-25mm with calcium stearate mass ratio 1:1；
Mixed material in step S1 is crushed by S2 with low temperature liquid nitrogen comminuting method, obtains 0.8-2.5 μm of mixed powder, low temperature
Liquid nitrogen comminuting method includes the following steps: that mixed material is cooling by liquid nitrogen, merging pulverizer inner cavity, is crushed；
S3 mixed powder is uniformly mixed with hot ethanol mass ratio 1:1.25 be made adhesive after it is spare.
Embodiment 1:
(1) raw material preparation: using the thin magnetic powder of ferrite as major ingredient, and H is selected3BO3、SiO2、Al2O3As additive, and will
Above-mentioned adhesive is uniformly added in magnetic powder, wherein adhesive, H3BO3、SiO2、Al2O3Weight be magnetic powder weight respectively
3.2%, 0.4%, 0.4%, 0.6%；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
Embodiment 2
(1) raw material preparation: using the thin magnetic powder of ferrite as major ingredient, and H is selected3BO3、SiO2、Al2O3As additive, and will
Above-mentioned adhesive is uniformly added in magnetic powder, wherein adhesive, H3BO3、SiO2、Al2O3Weight be magnetic powder weight respectively
3.6%, 0.4%, 0.4%, 0.6%；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
Embodiment 3
(1) raw material preparation: using the thin magnetic powder of ferrite as major ingredient, and H is selected3BO3、SiO2、Al2O3As additive, and will
Above-mentioned adhesive is uniformly added in magnetic powder, wherein adhesive, H3BO3、SiO2、Al2O3Weight be magnetic powder weight respectively
4.0%, 0.4%, 0.4%, 0.6%；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
Synthesis paraffin is replaced as a comparison case using camphor below.
Comparative example 1
(1) camphor is mixed with calcium stearate mass ratio 1:1, adhesive is made according to 1:1.25, by adhesive, H3BO3、
SiO2、Al2O3Uniformly it is added in magnetic powder, using the thin magnetic powder of ferrite as major ingredient, adhesive, H in magnetic powder3BO3、SiO2、Al2O3's
Weight is 3.2%, 0.4%, 0.4%, the 0.6% of magnetic powder weight respectively；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
Comparative example 2
(1) camphor is mixed with calcium stearate mass ratio 1:1, adhesive is made according to 1:1.25, by adhesive, H3BO3、
SiO2、Al2O3Uniformly it is added in magnetic powder, using the thin magnetic powder of ferrite as major ingredient, adhesive, H in magnetic powder3BO3、SiO2、Al2O3's
Weight is 3.6%, 0.4%, 0.4%, the 0.6% of magnetic powder weight respectively；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
Comparative example 3
(1) camphor is mixed with calcium stearate mass ratio 1:1, adhesive is made according to 1:1.25, by adhesive, H3BO3、
SiO2、Al2O3Uniformly it is added in magnetic powder, using the thin magnetic powder of ferrite as major ingredient, adhesive, H in magnetic powder3BO3、SiO2、Al2O3's
Weight is 4.0%, 0.4%, 0.4%, the 0.6% of magnetic powder weight respectively；
(2) material obtained in step (1) is subjected to crushing extruding；
(3) it is blank by oriented moulding of material obtained in step (2), is two-way to pressure, oil cylinder pressure to pressure mode
Power position 38MPa, additional forming magnetic field size are 1500 difficult to understand；
(4) blank obtained in step (3) is placed on pushed bat kiln and is sintered, sintering temperature is 1230 DEG C；
(5) product obtained in step (4) is cleaned and is polished, finished product is made.
The performance test methods of above embodiments and comparative example products obtained therefrom are as follows:
Remanent magnetism Br, magnetic strength coercivity H b, the intrinsic coercivity Hcj, magnetic energy product BH of product, are ground using Chinese measuring science
Study carefully the NIM-500C permanent magnetism high temperature thermometer measurement of institute's production, exportable J-H loop line, BH loop, demagnetizing curve etc., test wrapper
Border temperature is 23 DEG C or so, the repeatability of test result are as follows: Br, Hcb, Hcj are ± 0.2%.
The camphor used respectively to adhesive of the invention and the prior art using above-mentioned test method is as adhesive system
Standby obtained dry-type anisotropic strontium ferrite product is tested for the property, as a result in table listed below:
The invention product (embodiment 1-3) that new type bonding agent makes it can be seen from table, is followed using camphor as adhesive
Contrast sample (comparative example 1-3) compare, in terms of magnetic property, remanent magnetism Br, the magnetic strength coercivity H b, intrinsic coercivity of product
Hcj, magnetic energy product (BH)maxCompared to comparative example 1-3, substantially same or slightly higher level can be reached.
This embodiment is just an exemplary description of this patent and does not limit its protection scope, and those skilled in the art are also
Local change can be carried out to it, as long as it does not exceed the essence of this patent, all be considered as the equivalent replacement to this patent, all
Within the protection scope of this patent.
Claims (3)
1. a kind of production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite, which is characterized in that successively include following step
It is rapid:
S1 mixes the paraffin that partial size is 5-25mm with calcium stearate mass ratio 1:1；
Mixed material in step S1 is crushed by S2 with low temperature liquid nitrogen comminuting method, obtains 0.8-2.5 μm of mixed powder；
The mixed powder is uniformly mixed by S3 with hot ethanol mass ratio 1:1.25 is made adhesive.
2. the production method that adhesive is used in dry-pressing opposite sex permanent-magnet ferrite molding according to claim 1, which is characterized in that
The adhesive additive amount is the 3.2-4.0% of magnetic powder weight.
3. the production method that adhesive is used in dry-pressing opposite sex permanent-magnet ferrite molding according to claim 1, which is characterized in that
The low temperature liquid nitrogen comminuting method includes the following steps: that mixed material is cooling by liquid nitrogen, merging pulverizer inner cavity, is crushed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550498.1A CN110143821A (en) | 2019-06-24 | 2019-06-24 | The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550498.1A CN110143821A (en) | 2019-06-24 | 2019-06-24 | The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110143821A true CN110143821A (en) | 2019-08-20 |
Family
ID=67596282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910550498.1A Pending CN110143821A (en) | 2019-06-24 | 2019-06-24 | The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110143821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205137A (en) * | 2007-01-18 | 2008-06-25 | 横店集团东磁股份有限公司 | Method for manufacturing sintered permanent magnetic ferrite formed by dry pressing |
| CN103145409A (en) * | 2013-03-11 | 2013-06-12 | 广东江粉磁材股份有限公司 | Manufacturing method of dry-type anisotropic strontium ferrite |
| CN103382107A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Magnetic core material with high magnetic permeability and preparation method thereof |
| CN105384434A (en) * | 2015-11-11 | 2016-03-09 | 横店集团东磁股份有限公司 | Method for manufacturing dry press permanent magnetic ferrite |
-
2019
- 2019-06-24 CN CN201910550498.1A patent/CN110143821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205137A (en) * | 2007-01-18 | 2008-06-25 | 横店集团东磁股份有限公司 | Method for manufacturing sintered permanent magnetic ferrite formed by dry pressing |
| CN103145409A (en) * | 2013-03-11 | 2013-06-12 | 广东江粉磁材股份有限公司 | Manufacturing method of dry-type anisotropic strontium ferrite |
| CN103382107A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠市高华电子有限公司 | Magnetic core material with high magnetic permeability and preparation method thereof |
| CN105384434A (en) * | 2015-11-11 | 2016-03-09 | 横店集团东磁股份有限公司 | Method for manufacturing dry press permanent magnetic ferrite |
Non-Patent Citations (1)
| Title |
|---|
| 闫春泽: "《激光选区烧结3D打印技术 上》", 31 March 2019, 华中科技大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4685893B2 (en) | Manufacturing method of sintered magnet | |
| CN111354526B (en) | Method for manufacturing dry-pressed anisotropic sintered ferrite | |
| CN109133900A (en) | High dry-pressing formed permanent magnetic ferrite magnet of surface magnetic flux density and preparation method thereof | |
| JP4806798B2 (en) | Ferrite magnetic powder for bonded magnet, method for producing the same, and bonded magnet | |
| CN104496452B (en) | A kind of ferrite preparation method and its prepared ferrite | |
| CN105622082A (en) | Preparation method of permanent magnetic ferrite anisotropic dry-pressed powder | |
| CN100481281C (en) | Process for clinkering anisotropic permanent ferrite through polymer bonding and modeling | |
| CN102543418B (en) | Method for preparing high-magnetic energy product samarium-cobalt-based permanent magnet by modifying hydrogenated samarium nano powder | |
| US4278556A (en) | Process for producing flexible magnets | |
| Yue et al. | Microstructure and magnetic properties of anisotropic Nd–Fe–B magnets produced by spark plasma sintering technique | |
| KR20160065089A (en) | Ferrite particle powder for bonded magnet, resin composition for bonded magnet, and molded article using ferrite particle powder and resin composition | |
| CN110143821A (en) | The production method that adhesive is used in the molding of dry-pressing opposite sex permanent-magnet ferrite | |
| JP6482445B2 (en) | Ferrite powder for bonded magnet, manufacturing method thereof, and ferrite-based bonded magnet | |
| CN113651608A (en) | Dry-pressing permanent magnetic ferrite and preparation method and application thereof | |
| CN109102977B (en) | High-density dry-pressed anisotropic ferrite magnet and manufacturing method thereof | |
| CN111423226B (en) | Permanent magnetic ferrite and preparation method and application thereof | |
| JP6482443B2 (en) | Ferrite powder for bonded magnet, manufacturing method thereof, and ferrite-based bonded magnet | |
| CN106587974B (en) | Method for improving remanence of dry-pressing powder molding permanent magnetic ferrite | |
| CN104205253A (en) | Ferrite particulate powder for bonded magnet, resin composition for bonded magnet, and moldings using same | |
| CN103848621A (en) | Method for manufacturing dry-pressing heterosexual permanent-magnetic material | |
| CN106601408A (en) | High-performance magnetic material | |
| CN101928849A (en) | Method for manufacturing WTi pre-alloyed powder by using mechanical alloying | |
| MY192996A (en) | Manufacturing method for starting material for cerium-based abrasive agent, and manufacturing method for cerium-based abrasive agent | |
| JP2016072635A (en) | Ferrite powder for bonded magnet, method of manufacturing the same, and ferrite bonded magnet | |
| CN111018510A (en) | Manufacturing method of multi-pole magnetic ring |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190820 |
|
| WD01 | Invention patent application deemed withdrawn after publication |