CN106041047A - Powder metallurgy high-strength bearing material and preparation method thereof - Google Patents
Powder metallurgy high-strength bearing material and preparation method thereof Download PDFInfo
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- CN106041047A CN106041047A CN201610387274.XA CN201610387274A CN106041047A CN 106041047 A CN106041047 A CN 106041047A CN 201610387274 A CN201610387274 A CN 201610387274A CN 106041047 A CN106041047 A CN 106041047A
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- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 8
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 8
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000005642 Oleic acid Substances 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 8
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- 229920000609 methyl cellulose Polymers 0.000 claims abstract description 6
- 239000001923 methylcellulose Substances 0.000 claims abstract description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims abstract description 5
- 235000011613 Pinus brutia Nutrition 0.000 claims abstract description 5
- 241000018646 Pinus brutia Species 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000004005 microsphere Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 16
- 239000011812 mixed powder Substances 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 239000011733 molybdenum Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 4
- 230000009514 concussion Effects 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229950000845 politef Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- B22F1/0003—
-
- 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
- B22F3/02—Compacting only
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0094—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with organic materials as the main non-metallic constituent, e.g. resin
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a powder metallurgy high-strength bearing material and a preparation method thereof. The powder metallurgy high-strength bearing material is prepared from the following raw materials of, by weight, 85-90 parts of aluminum, 5-8 parts of iron, 3-4 parts of copper, 1-2 parts of silicon, 0.5-1 parts of magnesium, 3-4 parts of polytetrafluoroethylene powder, 0.8-1.5 parts of molybdenum disulfide, 2-3 parts of stearic acid, 0.6-1 part of methyl cellulose, 1-1.5 parts of graphite, 1-2 parts of pine sawdust, 0.3-0.4 part of yttrium oxide, 0.8-1.5 parts of carbon microspheres and an appropriate amount of oleic acid. The bearing material prepared through the preparation method has the characteristics such as smaller particle size, uniform distribution, high hardness, high flexure strength, high fracture toughness and good high-low-temperature stability, and is worth popularizing.
Description
Technical field
The present invention relates to powder metallurgical technology, particularly relate to a kind of powder metallurgy high rigidity bearing material and preparation thereof
Method.
Background technology
Metal sintering oiliness bearing, is using metal dust as raw material, the class sintering material made with powder metallurgical technique
Material.Metal sintering oily preparation inherently porous, and there is the quantity in the most freely adjustable space, size
And the advantage of distribution.Sintering metal oiliness bearing has been widely used in automobile, household electrical appliances, Transport Machinery, agricultural machinery, instrument instrument
The various fields such as table.The sintering metal oiliness bearing that modern industry mainly uses can be divided into cuprio, iron-based, copper ferrum by matrix material
Base etc..Aluminum is to be distributed one of widest element in the earth's crust, and the content in the earth's crust is only second to oxygen and silicon, occupies the 3rd.At gold
Belonging in kind, aluminum is the big metal of Equations of The Second Kind being only second to iron and steel.Aluminum is a kind of wide variety of industrial materials, and fine aluminium is the softest, by force
Spend the highest, have good ductility, after adding the element such as copper, silicon in aluminum, it is possible to effectively improve its mechanical property.Aluminum base
Sliding bearing is little due to its density, and intensity is high, and rotproofness is good, and low cost and other advantages, is allowed in some antifriction field, its performance
More excellent than copper-based bearings material.Although aluminum-based bearing material has a lot of excellent performance, but is as aluminum-based powder smelting
Gold utensil has the limitation of self, also has the biggest gap from reality application, and due to the problem in manufacturing process, the quality of burned product is also
Have much room for improvement, need to improve performance large-scale production further and expand its range of application.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of powder metallurgy high rigidity bearing material and
Its preparation method.
The present invention is achieved by the following technical solutions:
A kind of powder metallurgy high rigidity bearing material and preparation method thereof, is prepared by the raw materials in: aluminum 85-
90, ferrum 5-8, copper 3-4, silicon 1-2, magnesium 0.5-1, polytetrafluoroethylene powder 3-4, molybdenum bisuphide 0.8-1.5, stearic acid 2-3, methyl fibre
Dimension element 0.6-1, graphite 1-1.5, pine sawdust 1-2, yittrium oxide 0.3-0.4, carbon microspheres 0.8-1.5, oleic acid are appropriate；
Described a kind of powder metallurgy high rigidity bearing material and preparation method thereof, is made up of step in detail below:
(1) aluminum, ferrum, copper, magnesium and silica flour are poured ground and mixed in mortar into uniform, then this mixed-powder is added to ball milling
In machine, adding appropriate ethanol and carry out wet ball grinding, ball milling speed is 20 revolutions per seconds, is added to by mixed powder after ball milling 1-1.5h
Place standby after vacuum drying oven is dried at 70 DEG C；
(2) oleic acid and graphite mixing are added to ultrasonic disperse in ultrasonic wave concussion device uniform, add prepared by step (1)
Mixed-powder supersound process 30-45min, standby after ultrasonic end solid-liquid separation；
(3) polytetrafluoroethylene powder is put in blender and mix 5-10min under 11000 revs/min, add molybdenum bisuphide
Continue mixing 10-15min, the powder of mix homogeneously is placed in thermostatic drying chamber drying for standby at 80 DEG C；
(4) by stearic acid and methylcellulose Hybrid Heating, step (3) and remaining remaining material mix and blend are added
Uniformly, make granule, then be added in batch mixer mix homogeneously by the mixed-powder that this granule is prepared with step (2)；
(5) mixed-powder prepared by step (4) is put in mould, to press under the pressure of 200-300Mpa in hydraulic press
Making type, it is thus achieved that green compact, sent in vacuum sintering furnace by the green compact after molding and be sintered, agglomerating chamber's vacuum is 1.0 × 10-2-
1.0 × 10-3Pa, sintering temperature heats up with the speed of 10 DEG C/min, reaches insulation 4-5 hour when 550-650 DEG C, afterwards
Cool to room temperature with the furnace；
(6) blank prepared by step (5) carries out surfacing, deburring processes, and then immersion oil i.e. can get bearing material
Material.
The invention have the advantage that the present invention uses aluminium powder as matrix, add ferrum, copper, magnesium and silicon and improve the strong of aluminum base
Degree, relative density, porosity, crushing strength and the effect of reduction sintering temperature, the plasticity of aluminum is high, is easily bonded on mould,
Causing demoulding difficulty, the present invention utilizes oleic acid and graphite to be mixed to form good adsorption and is coated on metal-powder surface, energy
Enough improve the problem that powder body easily adheres to, also use the mixture of politef and molybdenum bisuphide to make granule and metal powder mixing
Sintering, is greatly enhanced the self-lubricity of aluminum-based bearing, reduces contractility, controls pore size and the uniformity of matrix, adds
Yittrium oxide, pine sawdust and carbon microspheres can be greatly improved the anti-corrosive properties of alumina-base material, hardness, hole and wearability, the present invention
Preparation bearing material have granularity tiny and be evenly distributed, high rigidity, high-flexural strength, high-fracture toughness, good height
The features such as temperature stability, are worthy to be popularized.
Detailed description of the invention
A kind of powder metallurgy high rigidity bearing material and preparation method thereof, is made up of the raw material of following weight portion (kilogram):
Aluminum 85, ferrum 5, copper 3, silicon 1, magnesium 0.5, polytetrafluoroethylene powder 3, molybdenum bisuphide 0.8, stearic acid 2, methylcellulose 0.6, graphite 1,
Pine sawdust 1, yittrium oxide 0.3, carbon microspheres 0.8, oleic acid are appropriate；
Described a kind of powder metallurgy high rigidity bearing material and preparation method thereof, is made up of step in detail below:
(1) aluminum, ferrum, copper, magnesium and silica flour are poured ground and mixed in mortar into uniform, then this mixed-powder is added to ball mill
In, adding appropriate ethanol and carry out wet ball grinding, ball milling speed is 20 revolutions per seconds, after ball milling 1h, mixed powder is added to vacuum and does
Place standby after dry case is dried at 70 DEG C；
(2) oleic acid and graphite mixing are added to ultrasonic disperse in ultrasonic wave concussion device uniform, add prepared by step (1)
Mixed-powder supersound process 30min, standby after ultrasonic end solid-liquid separation；
(3) polytetrafluoroethylene powder is put in blender and mix 5min under 11000 revs/min, add molybdenum bisuphide and continue
Continuous mixing 10min, is placed in thermostatic drying chamber drying for standby at 80 DEG C by the powder of mix homogeneously；
(4) by stearic acid and methylcellulose Hybrid Heating, step (3) and remaining remaining material mix and blend are added
Uniformly, make granule, then be added in batch mixer mix homogeneously by the mixed-powder that this granule is prepared with step (2)；
(5) mixed-powder prepared by step (4) is put in mould, to be pressed under the pressure of 200Mpa in hydraulic press
Green compact after molding are sent in vacuum sintering furnace and are sintered by type, it is thus achieved that green compact, and agglomerating chamber's vacuum is 1.0 × 10 × 10Pa,
Sintering temperature heats up with the speed of 10 DEG C/min, reaches insulation 4 hours when 550 DEG C, cools to room temperature afterwards with the furnace；
(6) blank prepared by step (5) carries out surfacing, deburring processes, and then immersion oil i.e. can get bearing material
Material.
Preparing volume aluminum-based bearing material according to embodiment, it is carried out performance test, result is as follows:
Vickers hardness: 42, crushing strength: 187Mpa, tensile strength: 116Mpa, oil content capacity: 20%.
Claims (2)
1. powder metallurgy high rigidity bearing material and preparation method thereof, it is characterised in that by the raw material system of following weight portion
Become: aluminum 85-90, ferrum 5-8, copper 3-4, silicon 1-2, magnesium 0.5-1, polytetrafluoroethylene powder 3-4, molybdenum bisuphide 0.8-1.5, stearic acid 2-
3, methylcellulose 0.6-1, graphite 1-1.5, pine sawdust 1-2, yittrium oxide 0.3-0.4, carbon microspheres 0.8-1.5, oleic acid are appropriate.
A kind of powder metallurgy high rigidity bearing material and preparation method thereof, it is characterised in that by with
Lower concrete steps are made:
(1) aluminum, ferrum, copper, magnesium and silica flour are poured ground and mixed in mortar into uniform, then this mixed-powder are added in ball mill,
Adding appropriate ethanol and carry out wet ball grinding, ball milling speed is 20 revolutions per seconds, after ball milling 1-1.5h, mixed powder is added to vacuum and does
Place standby after dry case is dried under 70 ° of C；
(2) oleic acid and graphite mixing are added to ultrasonic disperse in ultrasonic wave concussion device uniform, add mixing prepared by step (1)
Powder ultrasonic processes 30-45min, standby after ultrasonic end solid-liquid separation；
(3) polytetrafluoroethylene powder is put in blender and mix 5-10min under 11000 revs/min, add molybdenum bisuphide and continue
Mixing 10-15min, is placed in thermostatic drying chamber drying for standby under 80 ° of C by the powder of mix homogeneously；
(4) by stearic acid and methylcellulose Hybrid Heating, add step (3) and remaining remaining material mix and blend is equal
Even, make granule, then be added in batch mixer mix homogeneously by the mixed-powder that this granule is prepared with step (2)；
(5) mixed-powder prepared by step (4) is put in mould, to be pressed under the pressure of 200-300Mpa in hydraulic press
Green compact after molding are sent in vacuum sintering furnace and are sintered by type, it is thus achieved that green compact, and agglomerating chamber's vacuum is 1.0 × 10-2-1.0
× 10-3Pa, sintering temperature heats up with the speed of 10 ° of C/min, reaches insulation 4-5 hour during 550-650 ° of C, afterwards with stove
It is cooled to room temperature；
(6) blank prepared by step (5) carries out surfacing, deburring processes, and then immersion oil i.e. can get bearing material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610387274.XA CN106041047A (en) | 2016-05-31 | 2016-05-31 | Powder metallurgy high-strength bearing material and preparation method thereof |
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| CN201610387274.XA CN106041047A (en) | 2016-05-31 | 2016-05-31 | Powder metallurgy high-strength bearing material and preparation method thereof |
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Cited By (5)
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| CN106521290A (en) * | 2016-12-23 | 2017-03-22 | 南京信息工程大学 | Corrosion-resistant alloy material and purpose for preparing salted egg cleaning machine |
| CN106636969A (en) * | 2016-11-16 | 2017-05-10 | 马鞍山市恒欣减压器制造有限公司 | High-hardness iron-based powder metallurgy self-lubricating CNG engine valve seat ring and manufacturing method thereof |
| CN106777807A (en) * | 2017-01-13 | 2017-05-31 | 北京航空航天大学 | A kind of random size distribution 3D finite element modelings of powder metallurgy and emulation mode |
| CN108315615A (en) * | 2018-03-27 | 2018-07-24 | 中南大学 | A kind of rare earth oxide strengthens powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
| CN113305290A (en) * | 2021-05-27 | 2021-08-27 | 海安县鹰球粉末冶金有限公司 | Manufacturing method of aluminum-based powder metallurgy high-precision oil-retaining bearing |
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| CN108315615A (en) * | 2018-03-27 | 2018-07-24 | 中南大学 | A kind of rare earth oxide strengthens powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
| CN108315615B (en) * | 2018-03-27 | 2019-12-24 | 中南大学 | Rare earth element oxide reinforced powder metallurgy Al-Cu-Mg alloy and preparation method thereof |
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Application publication date: 20161026 |