CN106782984A - A kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof - Google Patents
A kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof Download PDFInfo
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- CN106782984A CN106782984A CN201611011237.5A CN201611011237A CN106782984A CN 106782984 A CN106782984 A CN 106782984A CN 201611011237 A CN201611011237 A CN 201611011237A CN 106782984 A CN106782984 A CN 106782984A
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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
- H01F1/12—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 soft-magnetic materials
- H01F1/33—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 soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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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
- H01F1/12—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 soft-magnetic materials
- H01F1/34—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 soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
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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
- H01F41/0266—Moulding; Pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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Abstract
The invention discloses a kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring, it is made from the following raw materials in parts by weight：Chromium 16 18, carbon 0.022 0.025, zirconium 0.6 0.9, silicon 1.2 1.4, copper 9 10, Nano graphite powder 0.9 1.2, calcium oxide 0.5 0.7, titanium nitride 0.4 0.7, polytetrafluoroethylene powder 0.2 0.4, talcum powder 12, activated carbon 0.6 0.9, vinyltrimethoxy silane 1.9 2.2, makrolon 8 11, manganese-zinc ferrite 1.1 1.4, iron 56 59, modified Nano graphite powder surface is covered one layer of copper film as kollag by the present invention, also add modified manganese-zinc ferrite and compound zirconium, the alloying components such as silicon, using sintering, high-temperature annealing process, improve material microscopic appearance, with good corrosion resistance, even if being corroded by stronger, also magnetic will not be caused to decline.
Description
Technical field
The present invention relates to technical field of magnetic materials, more particularly to a kind of corrosion resistant new-energy automobile magnetic water pump powder
Last metallurgy magnet ring and preparation method thereof.
Background technology
Soft magnetic materials, is the common functional material of a class, is widely used in motor, generator, transformer, sensor
And in other electrical equipments, be modern civilization sophisticated equipment in very important part.It is characterized in less
Saturated magnetization state can be quickly responded and reached under magnetic field, and is almost disappeared external magnetic field back magnetization state is removed, it is easy to logical
Cross the magnetized state for slightly changing outfield and controlling material.With continuing to develop for automobile industry, environment-friendly, energy-conservation subtracts
Row, the popularity rate cumulative year after year of green novel energy source automobile, the demand of soft magnetic materials also increases steadily, in particular for new energy
The market scale of the inside and outside magnet ring of magnetic water pump vital part of the electrical equipment such as motor, the controller of vehicle will increasingly increase.Magnet ring is again
Claim ferrite bead to be the anti-interference element commonly used in electronic circuit, have good inhibiting effect for high-frequency noise.
Ferrite can be regarded as the oxide of iron and the complex of other metal oxides, conventional ferrite master
If the ferrite of MnZn, nickel zinc and magnesium zinc series.Manganese-zinc ferrite has high saturated magnetic induction, high magnetic permeability, electricity high
The good characteristics such as resistance rate, low-power consumption, the quality of its performance directly decides that the performance of soft magnetic materials is good and bad, thus to manganese-zinc ferrite
The performance improvement of body is particularly important, and relevant its research is also more, such as《CaO is to Mn-Zn ferrite microstructures and magnetic property
Influence》CaO-Bi is prepared for using conventional oxide ceramic process2O3-MoO3-Nb2O5Composite mixed high magnetic permeability Mn-Zn iron oxygen
Body material, using SEM（SEM）, B-H testers and electric impedance analyzer etc. carry out to material structure and magnetic property
Characterize, have studied influences of the Different adding amount CaO to the microstructure and magnetic property of high-permeability Mn-Zn ferrite.As a result
Show, adding appropriate CaO can reduce the damage of material with crystal grain thinning, the frequency characteristic of raising material and quality factor q
Consumption；As mass fraction CaO=0.03%, material has optimal combination property：μ i=9772.22, L200/L10=
99.36%, room temperature PCV=435.14mW/cm3.
But be only that manganese-zinc ferrite is improved on the microscale level in document, although its frequency characteristic has changed
It is kind, but for prepare during magnet ring exist magnetic it is low, intolerant to burn into resistance to acids and bases is poor, the small defect such as not wear-resisting of hardness, thus urgent need
Formula and technological process to prior art middle magnetic ring reconfigure modified, are properly added alloying elements and lubricating auxiliary agent etc.
To improve the performances such as its corrosion-resistant, acid and alkali-resistance, the service life of magnet ring is improved.
The content of the invention
The object of the invention is exactly to make up the defect of prior art, there is provided a kind of corrosion resistant new-energy automobile magnetic force water
Pump powder metallurgy magnet ring and preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring, is made from the following raw materials in parts by weight：Chromium 16-
18th, carbon 0.022-0.025, zirconium 0.6-0.9, silicon 1.2-1.4, copper 9-10, Nano graphite powder 0.9-1.2, calcium oxide 0.5-0.7,
Titanium nitride 0.4-0.7, polytetrafluoroethylene powder 0.2-0.4, talcum powder 1-2, activated carbon 0.6-0.9, vinyltrimethoxy silane
1.9-2.2, makrolon 8-11, manganese-zinc ferrite 1.1-1.4, iron 56-59, described its mole of recipe ratio of manganese-zinc ferrite be
Iron oxide：Manganese oxide：Zinc oxide=51.5：24.5：24.
The described a kind of corrosion resistant new-energy automobile magnetic water pump preparation method of powder metallurgy magnet ring, including it is following
Step：
（1）By Nano graphite powder, polytetrafluoroethylene powder ultrasonic grinding 15-20 minutes, vinyltrimethoxy silane heating is added
To 50-70 DEG C, it is sufficiently stirred for 5-8 hours, is spray-dried；
（2）It is brought rapidly up to being completely melt during copper powder is put into crucible electrical resistance furnace, adds step（1）The stirring of material ultrasonic wave is mixed
Even, insulation stands 20-25 minutes, molten metal is obtained into copper clad of the particle diameter below 100 μm through powder by gas-atomization equipment and is modified
Nano graphite powder；
（3）By manganese-zinc ferrite using steel ball wet-milling 2-3 hour, dry in pre-burning 2 hours at 900-920 DEG C, addition calcium oxide,
Titanium nitride, talcum powder are carried out secondary ball milling 4-5 hours, and drying adds polyvinyl alcohol water solution, the step that mass ratio is 12%（2）
Material ultrasonic disperse 20-30 minutes, is spray-dried to obtain mixed powder；
（4）By ball milling mixing in iron powder and chromium, carbon, zirconium, the mixed powder machine of silica flour input, step is added（3）Mixed powder, makrolon
And other residual components are heated to 50-60 DEG C, grinding vacuum drying in 30-40 minute is added in mould and is pressed into required shape,
Obtain green compact；
（5）Above-mentioned green compact are put into sintering furnace, under the protective atmosphere of nitrogen, 500 DEG C is warming up within 2 hours, 30 minutes are incubated,
800 DEG C are warming up within 1 hour again, 30 minutes are incubated, 1100-1150 DEG C is warming up within then 1 hour, 2 hours are incubated, and close fire cold with stove
But it is put into annealing furnace to room temperature, 800 DEG C of annealing under nitrogen protection discharge for two hours.
It is an advantage of the invention that：Modified Nano graphite powder surface is covered one layer of copper film as solid lubrication by the present invention
Agent, density contrast is small, physical and mechanical properties are close, improves the wellability of itself and matrix and interface bond strength is high, and density increases
Plus, segregation is reduced, and clad can play a part of the evaporation or oxidation of protecting kollag to cause from high temperature, can show
Write the intensity and frictional behaviour for improving material；Simultaneously the present invention also add modified manganese-zinc ferrite and be combined the alloys such as zirconium, silicon into
Point, using slow heat up sintering, high-temperature annealing process stage by stage, with crystal grain thinning crystal grain distribution can be promoted uniform, reduce material
Internal stress, improves material microscopic appearance, improves the frequency characteristic and quality factor of material, reduces the loss of material, obtained product
Product good corrosion resistance, even if magnet is corroded by stronger, will not also cause magnetic to decline.
Specific embodiment
A kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring, is made from the following raw materials in parts by weight：
Chromium 16, carbon 0.022, zirconium 0.6, silicon 1.2, copper 9, Nano graphite powder 0.9, calcium oxide 0.5, titanium nitride 0.4, polytetrafluoroethylene powder
0.2nd, talcum powder 1, activated carbon 0.6, vinyltrimethoxy silane 1.9, makrolon 8, manganese-zinc ferrite 1.1, iron 56, described
Its mole of recipe ratio of manganese-zinc ferrite be iron oxide：Manganese oxide：Zinc oxide=51.5：24.5：24.
The described a kind of corrosion resistant new-energy automobile magnetic water pump preparation method of powder metallurgy magnet ring, including it is following
Step：
（1）By Nano graphite powder, polytetrafluoroethylene powder ultrasonic grinding 15-20 minutes, vinyltrimethoxy silane heating is added
To 50-70 DEG C, it is sufficiently stirred for 5-8 hours, is spray-dried；
（2）It is brought rapidly up to being completely melt during copper powder is put into crucible electrical resistance furnace, adds step（1）The stirring of material ultrasonic wave is mixed
Even, insulation stands 20-25 minutes, molten metal is obtained into copper clad of the particle diameter below 100 μm through powder by gas-atomization equipment and is modified
Nano graphite powder；
（3）By manganese-zinc ferrite using steel ball wet-milling 2-3 hour, dry in pre-burning 2 hours at 900-920 DEG C, addition calcium oxide,
Titanium nitride, talcum powder are carried out secondary ball milling 4-5 hours, and drying adds polyvinyl alcohol water solution, the step that mass ratio is 12%（2）
Material ultrasonic disperse 20-30 minutes, is spray-dried to obtain mixed powder；
（4）By ball milling mixing in iron powder and chromium, carbon, zirconium, the mixed powder machine of silica flour input, step is added（3）Mixed powder, makrolon
And other residual components are heated to 50-60 DEG C, grinding vacuum drying in 30-40 minute is added in mould and is pressed into required shape,
Obtain green compact；
（5）Above-mentioned green compact are put into sintering furnace, under the protective atmosphere of nitrogen, 500 DEG C is warming up within 2 hours, 30 minutes are incubated,
800 DEG C are warming up within 1 hour again, 30 minutes are incubated, 1100-1150 DEG C is warming up within then 1 hour, 2 hours are incubated, and close fire cold with stove
But it is put into annealing furnace to room temperature, 800 DEG C of annealing under nitrogen protection discharge for two hours.
There is following technical characteristic using powder metallurgy magnet ring obtained in the present invention：
（1）Density：5.12g/cm3
（2）Initial permeability μi=9782.22；
（3）Frequency stability parameter L200/ L10=99.52%；
（4）Room temperature volume power consumption PCV=415.12mW/cm3。
Claims (2)
1. a kind of corrosion resistant new-energy automobile magnetic water pump powder metallurgy magnet ring, it is characterised in that by following weight portion
Raw material is made：Chromium 16-18, carbon 0.022-0.025, zirconium 0.6-0.9, silicon 1.2-1.4, copper 9-10, Nano graphite powder 0.9-1.2,
Calcium oxide 0.5-0.7, titanium nitride 0.4-0.7, polytetrafluoroethylene powder 0.2-0.4, talcum powder 1-2, activated carbon 0.6-0.9, ethene
Base trimethoxy silane 1.9-2.2, makrolon 8-11, manganese-zinc ferrite 1.1-1.4, iron 56-59, described manganese-zinc ferrite
Its mole of recipe ratio is iron oxide：Manganese oxide：Zinc oxide=51.5：24.5：24.
2. a kind of corrosion resistant new-energy automobile magnetic water pump according to claim 1 making side of powder metallurgy magnet ring
Method, it is characterised in that comprise the following steps：
（1）By Nano graphite powder, polytetrafluoroethylene powder ultrasonic grinding 15-20 minutes, vinyltrimethoxy silane heating is added
To 50-70 DEG C, it is sufficiently stirred for 5-8 hours, is spray-dried；
（2）It is brought rapidly up to being completely melt during copper powder is put into crucible electrical resistance furnace, adds step（1）The stirring of material ultrasonic wave is mixed
Even, insulation stands 20-25 minutes, molten metal is obtained into copper clad of the particle diameter below 100 μm through powder by gas-atomization equipment and is modified
Nano graphite powder；
（3）By manganese-zinc ferrite using steel ball wet-milling 2-3 hour, dry in pre-burning 2 hours at 900-920 DEG C, addition calcium oxide,
Titanium nitride, talcum powder are carried out secondary ball milling 4-5 hours, and drying adds polyvinyl alcohol water solution, the step that mass ratio is 12%（2）
Material ultrasonic disperse 20-30 minutes, is spray-dried to obtain mixed powder；
（4）By ball milling mixing in iron powder and chromium, carbon, zirconium, the mixed powder machine of silica flour input, step is added（3）Mixed powder, makrolon
And other residual components are heated to 50-60 DEG C, grinding vacuum drying in 30-40 minute is added in mould and is pressed into required shape,
Obtain green compact；
（5）Above-mentioned green compact are put into sintering furnace, under the protective atmosphere of nitrogen, 500 DEG C is warming up within 2 hours, 30 minutes are incubated,
800 DEG C are warming up within 1 hour again, 30 minutes are incubated, 1100-1150 DEG C is warming up within then 1 hour, 2 hours are incubated, and close fire cold with stove
But it is put into annealing furnace to room temperature, 800 DEG C of annealing under nitrogen protection discharge for two hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498965A (en) * | 2022-01-12 | 2022-05-13 | 乐山三缘电机有限公司 | Magnet material for built-in rotor of permanent magnet motor and preparation method thereof |
| CN114855096A (en) * | 2022-03-30 | 2022-08-05 | 九江市瑞美鑫新材料有限公司 | Novel non-magnetic powder metallurgy material and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054644A (en) * | 2007-05-25 | 2007-10-17 | 东北大学 | Aluminum-base alloy self-lubricating material and preparation method thereof |
| CN104889403A (en) * | 2015-06-05 | 2015-09-09 | 东睦新材料集团股份有限公司 | Method for manufacturing iron-based powder metallurgy components |
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2016
- 2016-11-17 CN CN201611011237.5A patent/CN106782984A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054644A (en) * | 2007-05-25 | 2007-10-17 | 东北大学 | Aluminum-base alloy self-lubricating material and preparation method thereof |
| CN104889403A (en) * | 2015-06-05 | 2015-09-09 | 东睦新材料集团股份有限公司 | Method for manufacturing iron-based powder metallurgy components |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498965A (en) * | 2022-01-12 | 2022-05-13 | 乐山三缘电机有限公司 | Magnet material for built-in rotor of permanent magnet motor and preparation method thereof |
| CN114855096A (en) * | 2022-03-30 | 2022-08-05 | 九江市瑞美鑫新材料有限公司 | Novel non-magnetic powder metallurgy material and preparation process thereof |
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Application publication date: 20170531 |