CN106205995A - A kind of processing method of Sintered NdFeB magnet - Google Patents
A kind of processing method of Sintered NdFeB magnet Download PDFInfo
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- CN106205995A CN106205995A CN201610757077.2A CN201610757077A CN106205995A CN 106205995 A CN106205995 A CN 106205995A CN 201610757077 A CN201610757077 A CN 201610757077A CN 106205995 A CN106205995 A CN 106205995A
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- glue
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- 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
- H01F41/0286—Trimming
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The processing method that the invention provides a kind of Sintered NdFeB magnet, comprises the following steps, and after first neodymium iron boron magnetic body blank being carried out pretreatment cleaning, obtains blank block to be processed；Then, after the blank block to be processed above-mentioned steps obtained sticks with glue knot, semi-finished product are obtained；After the semi-finished product finally above-mentioned steps obtained carry out mill processing and machining, obtain neodymium iron boron magnetic body.The processing method that the present invention provides, just carries out daub bond operation in standard blank block (the blank block to be processed) stage at the beginning, on the one hand facilitates operation, improves production operation efficiency；On the one hand also making the dimensional accuracy finally giving finished product higher, surface is brighter and cleaner, the most relatively avoids the waste of glue simultaneously；Additionally, the processing method that the present invention provides is more favorable to improve the effect that follow-up surfacecti proteon processes.
Description
Technical field
The invention belongs to magnet preparing technical field, the processing method relating to a kind of Sintered NdFeB magnet, particularly relate to
A kind of bonding processing method of Sintered NdFeB magnet blank.
Background technology
Magnet is the material that can produce magnetic field, has the characteristic attracting the metals such as ferromagnetic material such as ferrum, nickel, cobalt.Magnetic
Body is generally divided into permanent magnet (hard magnetic body) and soft magnetic bodies, and hard magnetic body can be divided into again natural magnet and artificial magnet, artificial magnet
Refer to can be reached by the alloy of synthesis different materials the effect identical with natural magnet (magnet), but also can improve
Magnetic force.The sixties in 20th century, the appearance of rare earth permanent magnet, then the application for magnet opens a New Times, and first generation SmCo is forever
Magnetic SmCo5, second filial generation precipitation hardenable samarium cobalt permanent magnet Sm2Co17, up to now, develop into third generation Nd-Fe-B permanent magnet material
(NdFeB).Although ferrimagnet remains the permanent magnet material that consumption is maximum at present, but the output value of neodymium iron boron magnetic body is super
Cross ferrite permanent-magnet materials, have evolved into a big industry.
Neodymium iron boron magnetic body is also referred to as neodymium magnet (Neodymium magnet), and its chemical formula is Nd2Fe14B, is a kind of artificial
Permanent magnet, be also the permanent magnet so far with the strongest magnetic force, its maximum magnetic energy product (BHmax) exceeds ferrite 10
More than Bei, when naked magnetic, its magnetic force can reach 3500 Gauss.The advantage of neodymium iron boron magnetic body is that cost performance is high, body
Long-pending little, lightweight, good mechanical property and the feature such as magnetic is strong, be described as magnetic king in magnetics circle.
Along with deterioration and the shortage of resource of environment, green manufacturing and energy-conservation become the two the most main of current era development
Topic.At industrial robots such as defence and military, chemical industry, light industrys, the application demand of the service robot such as home services, Edutainment,
And the promotion energetically of new-energy automobile and fast development, all it be unable to do without the support of permanent magnet material.Especially it is referred to as permanent magnetism king
Neodymium iron boron magnetic body, it is applied to many fields due to higher performance.
But along with downstream every field is more and more higher to the requirement of magnet, its preparation and extension are also always the most persistently closed
The focus of note, at present, industry makes Nd-Fe-B permanent magnet material frequently with sintering process, as Wang Wei waits in " key process parameter and conjunction
The gold element impact on Sintered NdFeB magnetic property Yu mechanical property " in disclose employing sintering process manufacture Nd-Fe-B permanent magnet material
Technological process, mainly melting, powder process, compressing, isostatic pressed and five steps of sintering, specifically include dispensing, melting system
Ingot/get rid of band, powder process pulverizing, powder orientation is compressing, sinter, be tempered, machine-shaping and surface post-treating and other steps.
Nd-Fe-B permanent magnet material is after tempering among these, through detecting qualified standard blank block, and also will be through including mill
The finished product deep process such as the machine-shaping operation of the steps such as processing and machining and surfacecti proteon treatment process.Along with neodymium ferrum
The wide variety of demand of B permanent magnetic material, the market competition grow with each passing day and producer is to production efficiency and the control of cost, existing
The machine-shaping operation of deep process also exists the defects such as low, the rough surface of finished product accuracy, causes percent defective height, produces effect
The problem that rate is low.
Therefore, how to find suitable processing method, improve finished product accuracy and surface smoothness, it has also become the most many
Production firm and line technology personnel's problem demanding prompt solution.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is the processing method providing a kind of Sintered NdFeB magnet,
The processing method of the offer of the present invention can effectively be obtained in that high accuracy, the finished product of best bright finish, improves production simultaneously
Efficiency, decreases the consumption of glue, reduces production cost.
The processing method that the invention provides a kind of Sintered NdFeB magnet, comprises the following steps:
A), after neodymium iron boron magnetic body blank being carried out pretreatment cleaning, blank block to be processed is obtained；
B), after the blank block to be processed above-mentioned steps obtained sticks with glue knot, semi-finished product are obtained；
C), after semi-finished product above-mentioned steps obtained carry out mill processing and machining, neodymium iron boron magnetic body is obtained.
Preferably, fixating shape step is also included after described bonding.
Preferably, the temperature of described sizing is 120～200 DEG C；
The time of described sizing is 1～3h.
Preferably, described fixating shape step particularly as follows:
Blank block after bonding is put into clamping in fixture, then carries out baking sizing.
Preferably, described blank block and described fixture are provided directly with viscose glue adsorbate.
Preferably, described fixture includes the detent for placing blank block, main positioner and side positioner；
Described detent includes the first side, the second side being connected respectively and frame with described first side；
Described frame includes both sides formula frame or three limit formula frames；
One end of described both sides formula frame is connected with described first side, and the other end of described both sides formula frame is with described
Second side is connected, and forms four sides of detent；
One end of described three limit formula frames is connected with described first side or the second side, described three limit formula frames another
One end is connected with described first side, forms four sides of detent；
Described main positioner is oppositely arranged with described first side；
Described side positioner is oppositely arranged with described second side.
Preferably, described main positioner includes main location bar and the main locating surface being connected with described main location bar；
Described main location bar is through a face of described frame, and described main locating surface is arranged in described detent；Institute
State main locating surface both sides and be respectively the second side and side-locating face；
Described survey positioner includes the mensuration plane measuring position bar and being connected with described mensuration position bar；
Described mensuration position bar is through another face of described frame, and described side-locating face is arranged in described detent；
Described side-locating face both sides are respectively main locating surface and the first side.
Preferably, described glue includes Delomonopox AD295, Delomonopox AD298, Delomonopox
One or more in HT281, Loctite326 and Loctite332.
Preferably, the mode of described glue is single spreading；
The described glue consumption sticking with glue knot is 0.2～0.5mL/cm2。
Preferably, described pretreatment cleaning includes that ultrasonic oil removing, chemical derusting, ultrasonic washing, ethanol embathe and dries with baking oven
One or multi-step in Gan.
The processing method that the invention provides a kind of Sintered NdFeB magnet, comprises the following steps:, first by neodymium-iron-boron
After chaeta base carries out pretreatment cleaning, obtain blank block to be processed；Then the blank block to be processed above-mentioned steps obtained
After sticking with glue knot, obtain semi-finished product；After the semi-finished product finally above-mentioned steps obtained carry out mill processing and machining, obtain neodymium
Iron boron magnet.Compared with prior art, the processing method that the present invention provides, have employed the operating procedure being more suitable for, at the beginning
Standard blank block (the blank block to be processed) stage just carry out daub bond operation, on the one hand facilitate operation, improve life
Produce operating efficiency；On the one hand, making the dimensional accuracy finally giving finished product higher, surface is brighter and cleaner, the most relatively avoids glue simultaneously
The waste of liquid.Additionally, the processing method that the present invention provides is more favorable to improve the effect that follow-up surfacecti proteon processes.
Test result indicate that, the processing method using the Sintered NdFeB magnet of present invention offer, than the glue of prior art
Liquid utilization rate is high, test result indicate that, the processing method using the Sintered NdFeB magnet of present invention offer, than prior art
Glue utilization rate is high, and from the glue of unit are is wasted, daub face area is the biggest, and glue waste is the fewest, because being coated with daub
After liquid, magnetic sheet laminating process, glue major part can be from four limits spillings, and daub area is the biggest, and the glue of spilling is the fewest.Experiment number
According to display: glue consumption presses 0.4mL/cm2Calculate, 800mm of the present invention2Daub face consume about 5.12g glue, overflow glue about
0.324g, glue waste 6.3%, then carry out cutting and be divided into 4 pieces, be equivalent to the glue wastage of 200mm2；And existing routine
The 200mm of technique2Daub face consume about 1.28g glue, overflow glue 0.562g, glue waste 43.9%.
Experimental result is it is also shown that use the processing method of Sintered NdFeB magnet that the present invention provides, it is thus achieved that neodymium iron boron
Magnet surface roughness, flatness and perpendicularity are all substantially better than the processing method of prior art.With the processing of prior art
Method, standard blank block is being fixed bonding after cutting processing, mill processing acquisition smaller part finished product block, is carrying out surface process
Before, also need to remove surface colloid through overground processing and can be only achieved certain surface roughness, flatness and perpendicularity, also simultaneously
Size to be ensured, and the processing method that the present invention provides just has carried out fixing bonding before cutting processing, mill processing, thus exists
Cut, grind processing after directly obtain the semi-finished product block of certain surface roughness, flatness and perpendicularity, then carry out surface
Reason.
Experimental data shows: substantially there is solidification on the sample block surface that the processing method of prior art obtains after fixing bonding
Colloid, can substantially finding of after grinding off colloid there being sample block surface is uneven, and flatness is between 0.05～0.12mm, and face is vertical
Degree measured value is in the range of 0.1～0.15mm；Using the processing method that the present invention provides, sample block any surface finish, hands touches surface without recessed
Convex sense, flatness 0.01～0.02mm, perpendicularity 0.03～0.05mm.
Accompanying drawing explanation
The simplified schematic diagram of the fixture for the bonding sizing of blank block that Fig. 1 provides for the present invention；
Fig. 2 bonds and the flow process simplified schematic diagram of processing for the Sintered NdFeB magnet that the present invention provides；
Fig. 3 is conventional Sintered NdFeB magnet bonding and the flow process simplified schematic diagram of processing.
Detailed description of the invention
In order to be further appreciated by the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but
Should be appreciated that these descriptions are intended merely to further illustrate the features and advantages of the present invention rather than to invention claim
Limit.
The all raw materials of the present invention, are not particularly limited its source, that commercially buy or according to people in the art
Prepared by the conventional method known to Yuan.
The all raw materials of the present invention, are not particularly limited its purity, present invention preferably employs analytical pure or neodymium iron boron magnetic body
Conventional purity in field.
The processing method that the invention provides a kind of Sintered NdFeB magnet, comprises the following steps:
A), after neodymium iron boron magnetic body blank being carried out pretreatment cleaning, blank block to be processed is obtained；
B), after the blank block to be processed above-mentioned steps obtained sticks with glue knot, semi-finished product are obtained；
C), after semi-finished product above-mentioned steps obtained carry out mill processing and machining, neodymium iron boron magnetic body is obtained.
After first neodymium iron boron magnetic body blank is carried out pretreatment cleaning by the present invention, obtain blank block to be processed.
The source of described neodymium iron boron magnetic body blank is not particularly limited by the present invention, with burning well known to those skilled in the art
Conventional production of knot neodymium iron boron prepares, those skilled in the art can according to practical condition, shape requirement with
And properties of product select and adjust, the present invention preferably neodymium iron boron raw material is quick-fried through dispensing, melting, hydrogen, powder process, molding take
To compacting, sinter and be tempered in one or multi-step production process preparation after obtain, more preferably sequentially pass through dispensing, melting,
Hydrogen is quick-fried, powder process, molding orientation compacting, sinter and be tempered preparation after, obtain neodymium iron boron magnetic body blank, i.e. blank block；Again through inspection
After survey, obtain standard blank block.The trade mark of described neodymium iron boron magnetic body is not particularly limited by the present invention, with those skilled in the art
Known to the conventional trade mark, those skilled in the art can calculate requirement and product according to Practical Calculation situation, product
The trade mark selects or adjusts.
The content of neodymium iron boron magnetic body blank is not particularly limited by the present invention, forms the most by mass percentage, including Pr-
Nd:28%～33%；Dy:0～10%；Tb:0～10%；Nb:0～5%；Al:0～1%；B:0.5%～2.0%；Cu:0～
1%；Co:0～3%；Ga:0～2%；Gd:0～2%；Ho:0～2%；Zr:0～2%；Surplus is Fe.Wherein said Pr-Nd
Mass percentage content be preferably 29%～33%, more preferably 29%～32%, most preferably 29.5%～31%；Described
The mass percentage content of Dy is preferably 1.0%～9.0%, more preferably 2.0%～8.0%, most preferably 3.0%～
7.0%；The mass percentage content of described Tb is preferably 1.0%～9.0%, more preferably 2.0%～8.0%, most preferably
3.0%～7.0%；The mass percentage content of described Nb is preferably 1.0%～4.0%, more preferably 1.5%～3.5%,
It is preferably 1.8%～3.2%；The mass percentage content of described Al be preferably 0.2%～0.8%, more preferably 0.3%～
0.6%, most preferably 0.3%～0.5%；The mass percentage content of described B is preferably 0.8%～1%, more preferably
0.85%～1.3%, more preferably 0.9%～1.2%, most preferably 0.9%～1.1%；The mass percent of described Cu contains
Amount preferably 0.01%～0.8%, more preferably 0.02%～0.7%, most preferably 0.03%～0.6%；The matter of described Co
Amount degree is preferably 0.2%～2.0%, more preferably 0.3%～1.5%, most preferably 0.4%～1.2%；Described
The mass percentage content of Ga is preferably 0%～1.5%, more preferably 0.1%～1.2%, more preferably 0.15%～
1.0%, most preferably 0.2%～0.9%；The mass percentage content of described Gd is preferably 0.3%～1.5%, more preferably
0.5%～1.2%, more preferably 0.7%～1.0%, most preferably 0.8%～0.9%；The mass percentage content of described Ho
Be preferably 0.3%～1.5%, more preferably 0.5%～1.2%, more preferably 0.7%～1.0%, most preferably 0.8%～
0.9%；The mass percentage content of described Zr is preferably 0%～1.5%, more preferably 0.1%～1.2%, more preferably
0.15%～1.0%, most preferably 0.2%～0.9%.
Concrete operation and the parameter of described pretreatment cleaning are not particularly limited by the present invention, ripe with those skilled in the art
Pretreatment procedure before the machine-shaping step known, those skilled in the art can be according to practical condition, product
Forming requirements and characteristic requirements select or adjust, and pretreatment cleaning of the present invention preferably includes ultrasonic oil removing, chemistry
Rust cleaning, ultrasonic washing, ethanol embathe and the one or multi-step in oven for drying, include that ultrasonic oil removing, chemistry remove the most successively
Rust, ultrasonic washing, ethanol embathe and oven for drying step.The present invention does not has spy to detailed process and the parameter of above-mentioned process step
Do not limit, with detailed process and parameter, the people in the art of above-mentioned pre-treatment step well known to those skilled in the art
Member can require according to practical condition, formed product and characteristic requirements selects or adjusts, of the present invention ultrasonic
Oil removing, is preferably to be placed in alkaline mixed solution neodymium iron boron magnetic body blank (standard blank block) and carries out ultrasonic cleaning and defat removes
Oil；The particular make-up of described alkaline mixed solution is not particularly limited by the present invention, ultrasonic removes with well known to those skilled in the art
The alkaline mixed solution of oil, those skilled in the art can be according to practical condition, cleaning requirement and characteristic requirements
Selecting or adjust, alkaline mixed solution of the present invention preferably includes the one in tertiary sodium phosphate, sodium carbonate and OP-10 or many
Kind, more preferably tertiary sodium phosphate, sodium carbonate and OP-10.The concentration of described tertiary sodium phosphate is not particularly limited by the present invention, ability
Field technique personnel can select according to practical condition, cleaning requirement and characteristic requirements or adjust, of the present invention
The mass concentration of tertiary sodium phosphate is preferably 20～30g/L, more preferably 22～28g/L, most preferably 24～26g/L.The present invention
The concentration of described sodium carbonate is not particularly limited, those skilled in the art can according to practical condition, cleaning requirement with
And characteristic requirements selects or adjusts, the mass concentration of sodium carbonate of the present invention is preferably 20～30g/L, more preferably 22
～28g/L, most preferably 24～26g/L.The concentration of described OP-10 is not particularly limited by the present invention, those skilled in the art
Can select according to practical condition, cleaning requirement and characteristic requirements or adjust, the quality of OP-10 of the present invention
Concentration is preferably 1～3mL/L, more preferably 1.3～2.7mL/L, most preferably 1.6～2.4mL/L.
Chemical derusting of the present invention, is preferably and neodymium iron boron magnetic body blank is removed rust, oxide layer.Of the present invention super
Sound is washed, and neodymium iron boron magnetic body blank is preferably placed in ultrasonic cleaning in clear water solution, removes the loose granule on surface, impurity.This
Invent described ethanol to embathe, be preferably in neodymium iron boron magnetic body blank is placed in concentration 95% alcoholic solution and embathe, remove further
The fat particles on surface, impurity etc..Oven for drying of the present invention, is preferably placed in hot air circulation by neodymium iron boron magnetic body blank and does
Dry in dry case, remove residual ethanol and moisture in material hole.The present invention is the most special to the temperature and time of described drying
Limiting, with drying condition well known to those skilled in the art, those skilled in the art can be according to practical condition, clearly
Washing requirement and characteristic requirements selects or adjusts, the temperature of drying of the present invention is preferably 100～120 DEG C, more preferably
It is 105～115 DEG C, most preferably 108～112 DEG C；The time of described drying be preferably 15～20min, more preferably 16～
19min, most preferably 17～18min.
After the blank block to be processed that then above-mentioned steps is obtained by the present invention sticks with glue knot, obtain semi-finished product.
The kind of the glue in described glue is not particularly limited by the present invention, and those skilled in the art can be raw according to reality
Product situation, cleaning requirement and characteristic requirements select or adjust, and glue of the present invention preferably includes to include Delomonopox
One or many in AD295, Delomonopox AD298, Delomonopox HT281, Loctite326 and Loctite332
Kind, more preferably Delomonopox AD298, Delomonopox HT281 or Loctite332, most preferably Germany DELO is public
The Delomonopox AD298 of department.
The performance of the glue in described glue is not particularly limited by the present invention, and those skilled in the art can be raw according to reality
Product situation, cleaning requirement and characteristic requirements select or adjust, and the performance Applicable temperature of glue of the present invention is preferably-40
～200 DEG C, more preferably 0～150 DEG C, most preferably 50～100 DEG C；The tensile strength of described glue is preferably greater than equal to
50Mpa (thickness 2mm)；The insulating properties of described glue are preferably sheet resistance more than or equal to 1 × E13Ω, dielectric strength is preferably big
In equal to 20kV/mm.
The kind of the mode in described glue is not particularly limited by the present invention, with glue well known to those skilled in the art
Mode, those skilled in the art can select according to practical condition, cleaning requirement and characteristic requirements or adjust
Whole, the mode of glue of the present invention is single spreading, more specifically preferably with glue rifle, glue is coated in neodymium iron boron blank block
One surface, and use glue scraping plate to be scraped on neodymium iron boron blank block surface by glue solution of sticky shape to smear uniformly, make on neodymium iron boron blank block
Surface covers the glue solution of sticky shape of thin layer, is fitted in the daub face of the standard blank block after daub, during laminating one
Fitting in the non-daub face of the daub face of standard blank block and an other standard blank block, then will the standard blank block of laminating
Mutually rubbing makes the two sides being affixed all fill glue, then bonds.The present invention daub surface to described neodymium iron boron blank block
Being not particularly limited, those skilled in the art can select according to practical condition, cleaning requirement and characteristic requirements
Or adjust, the selection in daub face of the present invention preferably sets according to feature and the selected processing mode of finished product,
It is usually set to the surface that area is bigger, to facilitate daub, turn avoid glue waste.The consumption of described glue is not had by the present invention
Have especially restriction, those skilled in the art can carry out selecting according to practical condition, cleaning requirement and characteristic requirements or
Adjusting, the glue consumption sticking with glue knot of the present invention is preferably 0.2～0.3ml/cm2, more preferably 0.22～0.28ml/cm2,
Most preferably 0.24～0.26ml/cm2。
The present invention is to improve the effect of bonding, also includes fixating shape step after described bonding.The present invention is to described bonding sizing
The actual conditions of step is not particularly limited, and those skilled in the art can be according to practical condition, cleaning requirement and spy
Property require select or adjust, the temperature of sizing of the present invention is preferably 120～200 DEG C, more preferably 140～180 DEG C,
Most preferably 150～170 DEG C；The shaping time of described bonding is preferably 1～3h, more preferably 1.3～2.7h, most preferably
1.6～2.4h.The mode of described bonding sizing is not particularly limited by the present invention, and those skilled in the art can be raw according to reality
Product situation, cleaning requirement and characteristic requirements select or adjust, and the mode of sizing of the present invention preferably toasts sizing.
The detailed process of described fixating shape step is not particularly limited by the present invention, with bonding well known to those skilled in the art
The process of rear sizing, those skilled in the art can be carried out according to practical condition, cleaning requirement and characteristic requirements
Selecting or adjust, fixating shape step of the present invention is preferably particularly as follows: put into clamping in fixture by the blank block after bonding, then carries out
Baking sizing.
Described fixture is not particularly limited by the present invention, and those skilled in the art can be according to practical condition, cleaning
Requiring and characteristic requirements selects or adjusts, the present invention, for improving fixed effect, saves glue consumption, optimizes bond effect,
Described fixture preferably includes the detent for placing blank block, main positioner and side positioner.
Described detent includes the first side, the second side being connected respectively and frame with described first side；
Described frame includes both sides formula frame or three limit formula frames；
One end of described both sides formula frame is connected with described first side, and the other end of described both sides formula frame is with described
Second side is connected, and forms four sides of detent；
One end of described three limit formula frames is connected with described first side or the second side, described three limit formula frames another
One end is connected with described first side, forms four sides of detent；
Described main positioner is oppositely arranged with described first side；
Described side positioner is oppositely arranged with described second side.
The fixture for the bonding sizing of standard blank block that the present invention provides, including recessed for placing the location of blank block
Groove.
In the present embodiment, the groove inside dimension of described detent and the overall dimensions of described neodymium iron boron product are for fit mutually
Join, its role is to preferably place standard blank block.In other embodiments, the groove inside dimension of described detent can be
Any size, being beneficial to preferably place with fixed standard blank block is preferred version.The concept of described adaptation is not had by the present invention
Having restriction especially, with the concept of adaptation well known to those skilled in the art, those skilled in the art can be raw according to reality
Product situation, product design require and characteristic requirements select or adjust, adaptation of the present invention preferably with profile or size
Close.
In the present embodiment, described detent include the first side, be connected with described first side respectively second
Side and frame；Its role is to the first side, the second side and frame form four faces of detent, preferably place and
Fixed standard blank block.In other embodiments, the position relationship of described first side, the second side and frame can be preferably
Other position relationships, being beneficial to preferably place with fixed standard blank block is preferred version.
The limit number of described frame is not particularly limited by the present invention, and those skilled in the art can be according to actual production feelings
Condition, product design require and characteristic requirements select or adjust, frame of the present invention preferably include both sides formula frame or
Three limit formula frames.
When described frame is preferably both sides formula frame, one end of described both sides formula frame is connected with described first side
Connecing, the other end of described both sides formula frame is connected with described second side, forms four sides of detent.
When described frame is preferably three limit formula frames, one end of described three limit formula frames and described first side or second
Side is connected, and the other end of described three limit formula frames is connected with described first side, forms four sides of detent.
The mode of above-mentioned connection is not particularly limited by the present invention, with connected mode well known to those skilled in the art i.e.
Can, the mode of connection of the present invention be preferably one-body molded when making, weld, bond or fix with bolt, more preferably weldering
Connect or fix with bolt.One end of described three limit formula frames is connected by the present invention with described first side, described three Bian Shibian
The other end of frame is connected with described first side and has no particular limits, and it will be appreciated by those skilled in the art that based on general knowledge,
When one end of described three limit formula frames is connected with described first side, the other end of described three limit formula frames and described first side
The other end in face is connected.
In the present embodiment, described detent also includes main positioner and side positioner.
Described main positioner is oppositely arranged with described first side；Described side positioner is relative with described second side
Arrange.The described concept being oppositely arranged is not particularly limited by the present invention, is oppositely arranged with well known to those skilled in the art
Connotation, of the present invention being oppositely arranged refers to be configured in opposite.
In the present embodiment, described main positioner includes main location bar and the main location being connected with described main location bar
Face.The effect that its role is to there is adjustment more preferable clamping standard blank block.In other embodiments, described main location dress
Put and can also be preferably other similar structures, be beneficial to more preferable Adjustment effect and more preferable fastening neodymium iron boron product is preferred
Scheme.The present invention specifically chosen being not particularly limited to described main location bar, has phase with well known to those skilled in the art
Like function part, those skilled in the art can require according to practical condition, product design and characteristic requirements enters
Row selects or adjusts, and main location of the present invention bar is particularly preferred as cylindrical core, more preferably bolt；The size of described bolt
Adaptability preparation is carried out according to the size of groove and the size of blank.In other embodiments, described main location bar can also be excellent
Elect other similar structures as, be beneficial to more preferable Adjustment effect and more preferable fastening standard blank block is preferred version.
In the present embodiment, described main location bar is arranged on preferably across a face of described frame, described main locating surface
In described detent, described main locating surface both sides are respectively the second side and side-locating face.Preferably one, described main location bar
Dividing in detent, another part is outside detent, it is possible to rotate, and adjusts the ratio between a part and another part
Example, the effect that its role is to there is adjustment more preferable clamping standard blank block.In other embodiments, described main location bar
Other positions can also be preferably arranged on main locating surface, be beneficial to more preferable Adjustment effect and more preferable fastening standard hair
Briquet is preferred version.
In the present embodiment, described survey positioner preferably includes the survey measuring position bar and being connected with described mensuration position bar
Locating surface.The effect that its role is to there is adjustment more preferable clamping standard blank block.In other embodiments, described mensuration
Position device can also be preferably other similar structures, is beneficial to more preferable Adjustment effect and more preferable fastening neodymium iron boron product is
Preferred version.The present invention specifically chosen being not particularly limited to described mensuration position bar, with tool well known to those skilled in the art
Having identity function part, those skilled in the art can require according to practical condition, product design and characteristic is wanted
Asking and select or adjust, mensuration position of the present invention bar is particularly preferred as cylindrical core, more preferably bolt；Described bolt
Size carries out adaptability preparation according to the size of groove and the size of blank.In other embodiments, described mensuration position bar also may be used
To be preferably other similar structures, it is beneficial to more preferable Adjustment effect and more preferable fastening standard blank block is preferred version.
In the present embodiment, described mensuration position bar is arranged preferably across another face of described frame, described side-locating face
In described detent, described side-locating face both sides are respectively main locating surface and the first side.Described mensuration position bar preferably one
Part is in detent, and another part is outside detent, it is possible to rotate, and adjusts between a part and another part
Ratio, the effect that its role is to there is adjustment more preferable clamping standard blank block.In other embodiments, described mensuration position
Bar and side-locating face can also be preferably arranged on other positions, are beneficial to more preferable Adjustment effect and preferably fasten standard
Blank block is preferred version.
The step of described above-mentioned sizing is not had other to limit especially by the present invention, with well known to those skilled in the art similar
Step, those skilled in the art can require according to practical condition, product design and characteristic requirements selects
Or adjust, the present invention is further preferably provided directly with viscose glue adsorbate, to prevent from holding out against process at described blank block and described fixture
Middle glue overflows from laminating gap, it is to avoid during baking, standard blank block is consolidated with auxiliary mould.The present invention is to described viscous
The specifically chosen of glue adsorbate is not particularly limited, and those skilled in the art can want according to practical condition, product design
Asking and characteristic requirements selects or adjusts, the present invention is preferably paper.
Seeing the simplified schematic diagram of the fixture for the bonding sizing of blank block that Fig. 1, Fig. 1 provide for the present invention, wherein, 1 is
Second side of detent, 2 is main positioner, and 3 is side positioner.Wherein, frame is three limit formula frames, three Bian Shibian
One end of frame is connected with the first side, and the other end of the other end and the first side is connected, and uses bolt to fix.
After the semi-finished product that above-mentioned steps is finally obtained by the present invention carry out mill processing and machining, obtain neodymium-iron-boron
Body.
The processing of described above-mentioned mill and the concrete steps of machining and parameter are not had other to limit especially by the present invention, with this
Similar step known to skilled person, those skilled in the art can want according to practical condition, product design
Ask and characteristic requirements selects or adjusts.The present invention is preferably according to the standard blank block after the sizing of above-mentioned bonding and product
Requirement carries out machining, and the present invention processes step through surfacecti proteon below the most again, thus obtains final neodymium ferrum
Boron magnet finished product.
Above-mentioned steps of the present invention provides the processing method of a kind of Sintered NdFeB magnet, the processing side that the present invention provides
Method, have employed more suitably operating procedure, just carries out daub bond operation, one side side in the standard blank block stage at the beginning
Operation, improve production operation efficiency；On the one hand, making the dimensional accuracy finally giving finished product higher, surface is brighter and cleaner, with
Time the most relatively avoid the waste of glue.Prevent additionally, the processing method that the present invention provides is more favorable to improve follow-up surface
Protect the effect of process.Present invention also offers the fixture for the sizing that bonds, neodymium iron boron magnetic body blank can effectively be entered by it
Row location, it is possible in the baking type-approval process of product realize location and clamping, thus ensure final products technology require with
And save glue.Test result indicate that the processing method using the Sintered NdFeB magnet of present invention offer compares prior art
Glue utilization rate high, from the glue of unit are is wasted, daub face area is the biggest, and glue waste is the fewest, because smearing
After glue, magnetic sheet laminating process, glue major part can be from four limits spillings, and daub area is the biggest, and the glue of spilling is the fewest.Experiment
Data show: glue consumption is by 0.4mL/cm2Calculate, 800mm of the present invention2Daub face consume about 5.12g glue, overflow glue about
0.324g, glue waste 6.3%, then carry out cutting and be divided into 4 pieces, be equivalent to the glue wastage of 200mm2；And existing routine
The 200mm of technique2Daub face consume about 1.28g glue, overflow glue 0.562g, glue waste 43.9%.
Experimental result is it is also shown that use the processing method of Sintered NdFeB magnet that the present invention provides, it is thus achieved that neodymium iron boron
Magnet surface roughness, flatness and perpendicularity are all substantially better than the processing method of prior art.With the processing of prior art
Method, standard blank block is being fixed bonding after cutting processing, mill processing acquisition smaller part finished product block, is carrying out surface process
Before, also need to remove surface colloid through overground processing and can be only achieved certain surface roughness, flatness and perpendicularity, also simultaneously
Size to be ensured, and the processing method that the present invention provides just has carried out fixing bonding before cutting processing, mill processing, thus exists
Cut, grind processing after directly obtain the semi-finished product block of certain surface roughness, flatness and perpendicularity, then carry out surface
Reason.
Experimental data shows: substantially there is solidification on the sample block surface that the processing method of prior art obtains after fixing bonding
Colloid, can substantially finding of after grinding off colloid there being sample block surface is uneven, and flatness is between 0.05～0.12mm, and face is vertical
Degree measured value is in the range of 0.1～0.15mm；Using the processing method that the present invention provides, sample block any surface finish, hands touches surface without recessed
Convex sense, flatness 0.01～0.02mm, perpendicularity 0.03～0.05mm.
In order to further illustrate the present invention, a kind of Sintered NdFeB magnet present invention provided below in conjunction with embodiment
Processing method is described in detail, but it is to be understood that these embodiments are to carry out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, simply for further illustrating the features and advantages of the present invention,
Rather than limiting to the claimed invention, protection scope of the present invention is also not necessarily limited to following embodiment.
Embodiment 1
Thering is provided a kind of fixture for the bonding sizing of standard blank block, fixture includes that the location for placing blank block is recessed
Groove, main positioner and side positioner.
Detent includes three that the second side that the first side is connected is connected with the first side with the first side
Limit formula frame；
Wherein, one end of three limit formula frames is connected with the first side, and the other end of the other end and the first side is connected,
And use bolt to fix, and forming four sides of detent, the second side is medial surface；
Main positioner includes main location bar and the main locating surface being connected with described main location bar, main positioner and
One side is oppositely arranged, and main location bar is through a face of frame, and main locating surface is arranged in detent, main locating surface both sides
It is respectively the second side and side-locating face.
Survey the mensuration plane that positioner includes measuring position bar and being connected with described mensuration position bar, side positioner and institute
Stating the second side to be oppositely arranged, measure position bar another face through frame, side-locating face is arranged in detent, and side positions
Both sides, face are respectively main locating surface and the first side.
Seeing the simplified schematic diagram of the fixture for the bonding sizing of blank block that Fig. 1, Fig. 1 provide for the present invention, wherein, 1 is
Second side of detent, 2 is main positioner, and 3 is side positioner.
Embodiment 2
Main technological process:
Standard blank block → cleaning → daub → baking sizing → mill processing → machining → surface processes.
The pretreatment cleaning of Sintered NdFeB magnet standard blank block, the glue of selection, daub mode, fixing bonding and processing
Molding.
The pretreatment cleaning of Sintered NdFeB magnet standard blank block, including ultrasonic oil removing, chemical derusting, ultrasonic washing,
Ethanol embathes and oven for drying；
Clean:
(1) ultrasonic oil removing, is placed in Nd-Fe-B permanent magnet material in alkaline solution through ultrasonic cleaning, degreasing degreasing；
(2) chemical derusting, removes rust, oxide layer by Nd-Fe-B permanent magnet material；
(3) ultrasonic washing, is placed in ultrasonic cleaning in clear water solution by Nd-Fe-B permanent magnet material, removes loose of surface
Grain, impurity；
(4) ethanol embathes, and embathes, remove surface further in Nd-Fe-B permanent magnet material is placed in concentration 95% alcoholic solution
's
(5) oven for drying, dries in Nd-Fe-B permanent magnet material is placed in hot air circulation drying oven, residual in removing material hole
Stay ethanol and moisture.
Select glue be Delomonopox AD298, solidification temperature 120 DEG C～180 DEG C, hardening time 40min, after solidification
Used temperature range-40 DEG C～200 DEG C；Density 1.6g/ml；Tensile strength (thickness 2mm) is 50Mpa, sheet resistance >=1
×E13Ω, dielectric strength is 20kV/mm.
Daub: glue usage amount is 0.5mL/cm2, one side glue, according to smearing surface of position area, it is desirable to glue 100%
Covering painting is wiped one's face, and the requirement allowing glue-line size is set by coating layer thickness according to after solidification.
Fixing bonding includes that fixture is fixed and toasts bonding, and laminating above-mentioned blank block together is positioned over embodiment 1
In fixture, the blank block after laminating is fixed, by fixture 2,3 positioner, controls the plane of the blank block after laminating
Degree, perpendicularity and glue-line size, be then placed in the hot run test cyclic drying that temperature environment is 170 DEG C by the blank block fixed
In case, baking 40min, makes glue solidify；
Machine-shaping includes that well known to those skilled in the art cutting is processed and mill processing, the sintering neodymium ferrum after solidifying glue
Boron magnet carries out cutting, grinding processing, it is thus achieved that surface finished product before treatment.
See Sintered NdFeB magnet bonding and the flow process simplified schematic diagram of processing that Fig. 2, Fig. 2 provide for the present invention.See
Fig. 3, Fig. 3 are conventional Sintered NdFeB magnet bonding and the flow process simplified schematic diagram of processing.
Said process and the product that obtains are detected, then enters with process and the product obtained of conventional processing technique
Row detection, comparing result shows, the embodiment of the present invention 2 has higher glue utilization rate, and glue consumption takes 0.5mL/cm2, this
Bright 800mm2Daub face consume about 6.4g glue, overflow glue about 0.658g, glue waste 10.2%, then carry out cutting and be divided into
4 pieces, be equivalent to 200mm2Glue wastage；And the 200mm of existing common process2Daub face consume about 1.6g glue, overflow
Go out glue 0.826g, glue waste 51.6%；The glue wastage of the present invention is down to 10.2% by 51.6%.
Technical specification in terms of size is detected, it is thus achieved that neodymium iron boron magnetic body surface roughness, flatness and hang down
The processing method that straight degree is all substantially better than prior art.By the processing method of conventional processing technique, standard blank block is through cutting
Processing, mill processing are fixed bonding after obtaining smaller part finished product block, before carrying out surface process, also need through overground processing removal table
Face colloid can be only achieved certain surface roughness, flatness and perpendicularity, size to be ensured, and the present invention provides
Processing method cut processing, mill processing before be just fixed bonding, thus after cutting, grinding processing, directly obtain certain table
The semi-finished product block of surface roughness, flatness and perpendicularity, then carries out surface process.
Many group test datas show: the sample block surface that the processing method of prior art obtains after fixing bonding substantially has solid
Change colloid, can substantially finding of after grinding off colloid there being sample block surface is uneven, flatness between 0.04～0.10mm, face
Perpendicularity measured value is in the range of 0.08～0.15mm.
Use the present invention provide processing method, sample block any surface finish, hands touches surface no concave-convex sense, flatness be 0.01～
0.02mm, perpendicularity is 0.03～0.05mm.
Embodiment 3
Main technological process:
Standard blank block → cleaning → daub → baking sizing → mill processing → machining → surface processes.
The pretreatment cleaning of Sintered NdFeB magnet standard blank block, the glue of selection, daub mode, fixing bonding and processing
Molding.
The pretreatment cleaning of Sintered NdFeB magnet standard blank block, including ultrasonic oil removing, chemical derusting, ultrasonic washing,
Ethanol embathes and oven for drying；
Clean:
(1) ultrasonic oil removing, is placed in Nd-Fe-B permanent magnet material in alkaline solution through ultrasonic cleaning, degreasing degreasing；
(2) chemical derusting, removes rust, oxide layer by Nd-Fe-B permanent magnet material；
(3) ultrasonic washing, is placed in ultrasonic cleaning in clear water solution by Nd-Fe-B permanent magnet material, removes loose of surface
Grain, impurity；
(4) ethanol embathes, and embathes, remove surface further in Nd-Fe-B permanent magnet material is placed in concentration 95% alcoholic solution
's
(5) oven for drying, dries in Nd-Fe-B permanent magnet material is placed in hot air circulation drying oven, residual in removing material hole
Stay ethanol and moisture.
Select glue be Delomonopox AD298, solidification temperature 120 DEG C～180 DEG C, hardening time 40min, after solidification
Used temperature range-40 DEG C～200 DEG C；Density 1.6g/ml；Tensile strength (thickness 2mm) is 50Mpa, sheet resistance >=1
×E13Ω, dielectric strength is 20kV/mm.
Daub: glue uses and measures 0.4mL/cm2, one side glue, according to smearing surface of position area, it is desirable to glue 100%
Covering painting is wiped one's face, and the requirement allowing glue-line size is set by coating layer thickness according to after solidification.
Fixing bonding includes that fixture is fixed and toasts bonding, and laminating above-mentioned blank block together is positioned over embodiment 1
In fixture, the blank block after laminating is fixed, by fixture 2,3 positioner, controls the plane of the blank block after laminating
Degree, perpendicularity and glue-line size, be then placed in the hot run test cyclic drying that temperature environment is 170 DEG C by the blank block fixed
In case, baking 40min, makes glue solidify；
Machine-shaping includes that well known to those skilled in the art cutting is processed and mill processing, the sintering neodymium ferrum after solidifying glue
Boron magnet carries out cutting, grinding processing, it is thus achieved that surface finished product before treatment.
Said process and the product that obtains are detected, then enters with process and the product obtained of conventional processing technique
Row detection, comparing result shows, the embodiment of the present invention 3 has higher glue utilization rate, and glue consumption takes 0.4mL/cm2, this
Bright 800mm2Daub face consume about 5.12g glue, overflow glue about 0.324g, glue waste 6.3%, then carry out cutting and be divided into
4 pieces, be equivalent to 200mm2Glue wastage；And the 200mm of existing common process2Daub face consume about 1.28g glue,
Overflow glue 0.562g, glue waste 43.9%；The glue wastage of the present invention is down to 6.3% by 43.9%.
Technical specification in terms of size is detected, it is thus achieved that neodymium iron boron magnetic body surface roughness, flatness and hang down
The processing method that straight degree is all substantially better than prior art.By the processing method of conventional processing technique, standard blank block is through cutting
Processing, mill processing are fixed bonding after obtaining smaller part finished product block, before carrying out surface process, also need through overground processing removal table
Face colloid can be only achieved certain surface roughness, flatness and perpendicularity, size to be ensured, and the present invention provides
Processing method cut processing, mill processing before be just fixed bonding, thus after cutting, grinding processing, directly obtain certain table
The semi-finished product block of surface roughness, flatness and perpendicularity, then carries out surface process.
Many group test datas show: the sample block surface that the processing method of prior art obtains after fixing bonding substantially has solid
Change colloid, can substantially finding of after grinding off colloid there being sample block surface is uneven, flatness between 0.05～0.12mm, face
Perpendicularity measured value is in the range of 0.1～0.15mm.
Use the present invention provide processing method, sample block any surface finish, hands touches surface no concave-convex sense, flatness be 0.01～
0.03mm, perpendicularity is 0.04～0.05mm.
Above the processing method of a kind of Sintered NdFeB magnet that the present invention provides is described in detail, herein
Applying specific case to be set forth principle and the embodiment of the present invention, the explanation of above example is only intended to help
Understand method and the core concept thereof of the present invention, including best mode, and also make any person skilled in the art can
Enough put into practice the present invention, including manufacturing and using any device or system, and the method implementing any combination.It should be pointed out that, for
For those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to if the present invention is carried out
Dry improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.Patent protection of the present invention
Scope is defined by the claims, and those skilled in the art can be included it is conceivable that other embodiments.If these its
His embodiment has the structural element being not different from claim character express, if or they include and claim
Character express is without the equivalent structural elements of essence difference, then these other embodiments also should be included in the scope of claim
In.
Claims (10)
1. the processing method of a Sintered NdFeB magnet, it is characterised in that comprise the following steps:
A), after neodymium iron boron magnetic body blank being carried out pretreatment cleaning, blank block to be processed is obtained；
B), after the blank block to be processed above-mentioned steps obtained sticks with glue knot, semi-finished product are obtained；
C), after semi-finished product above-mentioned steps obtained carry out mill processing and machining, neodymium iron boron magnetic body is obtained.
Processing method the most according to claim 1, it is characterised in that also include fixating shape step after described bonding.
Processing method the most according to claim 2, it is characterised in that the temperature of described sizing is 120～200 DEG C；
The time of described sizing is 1～3h.
Processing method the most according to claim 2, it is characterised in that described fixating shape step particularly as follows:
Blank block after bonding is put into clamping in fixture, then carries out baking sizing.
Processing method the most according to claim 4, it is characterised in that described blank block is provided directly with gluing with described fixture
Glue adsorbate.
Processing method the most according to claim 4, it is characterised in that described fixture includes the location for placing blank block
Groove, main positioner and side positioner；
Described detent includes the first side, the second side being connected respectively and frame with described first side；
Described frame includes both sides formula frame or three limit formula frames；
One end of described both sides formula frame is connected with described first side, the other end and described second of described both sides formula frame
Side is connected, and forms four sides of detent；
One end of described three limit formula frames is connected with described first side or the second side, the other end of described three limit formula frames
It is connected with described first side, forms four sides of detent；
Described main positioner is oppositely arranged with described first side；
Described side positioner is oppositely arranged with described second side.
Processing method the most according to claim 6, it is characterised in that described main positioner include main location bar and with institute
State the main locating surface that main location bar is connected；
Described main location bar is through a face of described frame, and described main locating surface is arranged in described detent；Described master
Locating surface both sides are respectively the second side and side-locating face；
Described survey positioner includes the mensuration plane measuring position bar and being connected with described mensuration position bar；
Described mensuration position bar is through another face of described frame, and described side-locating face is arranged in described detent；Described
Side-locating face both sides are respectively main locating surface and the first side.
8. according to the processing method described in claim 1～7 any one, it is characterised in that described glue includes Delomonopox
One or many in AD295, Delomonopox AD298, Delomonopox HT281, Loctite326 and Loctite332
Kind.
9. according to the processing method described in claim 1～7 any one, it is characterised in that the mode of described glue is one side
Gluing；
The described glue consumption sticking with glue knot is 0.2～0.5mL/cm2。
10. according to the processing method described in claim 1～7 any one, it is characterised in that described pretreatment cleaning includes surpassing
Sound oil removing, chemical derusting, ultrasonic washing, ethanol embathe and the one or multi-step in oven for drying.
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| CN107134359A (en) * | 2017-05-08 | 2017-09-05 | 廊坊京磁精密材料有限公司 | The processing method of sintered NdFeB |
| CN108335817A (en) * | 2018-03-30 | 2018-07-27 | 廊坊京磁精密材料有限公司 | The processing method of sintered NdFeB |
| CN110480281A (en) * | 2019-09-09 | 2019-11-22 | 中北大学 | A kind of processing method of annulus neodymium iron boron |
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| CN106205995B (en) | 2019-09-27 |
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