CN108103349A - A kind of leadless copper base bearing of the nickel containing phosphor tin（Bearing shell）Material and preparation method thereof - Google Patents
A kind of leadless copper base bearing of the nickel containing phosphor tin（Bearing shell）Material and preparation method thereof Download PDFInfo
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- CN108103349A CN108103349A CN201711324101.4A CN201711324101A CN108103349A CN 108103349 A CN108103349 A CN 108103349A CN 201711324101 A CN201711324101 A CN 201711324101A CN 108103349 A CN108103349 A CN 108103349A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- 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
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- 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
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
-
- 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
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a kind of leadless copper base bearings of nickel containing phosphor tin for belonging to sliding bearing field（Bearing shell）Material and preparation method thereof.The composite material is to be combined by carbon steel flaggy of the carbon content no more than 0.24wt% with Pb-free copper-alloy layer；The compositing formula of the copper alloy is by weight percentage：Cu 79 98.5%, Sn 0.5 10%, Ni 0.5 10%, P 0.01 0.5%, other trace elements and impurity content sum total are no more than 0.5%.Compared with existing leadless copper base bearing material, this new material adds a small amount of P, and alloy material is made to increase mobility in calender line after sintering, improves alloy density, improves alloy crystallization kernel structure, has relatively low coefficient of friction and higher wear-resisting property.The present invention also prepares the leadless copper base double metallic composite material using powder metallurgic method; also have the characteristics that crystal grain is thin, bearing capacity is strong, leadless environment-friendly; preparation process is simply easy to scale automated production, can be used as material for sliding bearing, is particularly suitable as engine bearing material.
Description
Technical field
The present invention relates to a kind of novel lead-free copper-based bearings for belonging to sliding bearing field（Bearing shell）Material.
Background technology
Leaded Cu-based sliding bearing（Bearing shell）Material is with characteristics such as preferable antifriction, antistickings and with bearing capacity
Greatly, the characteristics such as fatigue strength height, in high-mechanic sliding bearing（Bearing shell）It is used widely in field.However lead is that a kind of toxic have
Evil element, copper-lead bearing（Bearing shell）The application of material has been restricted.Various leadless copper base bearings（Bearing shell）Material starts to replace
Generation traditional copper-lead bearing（Bearing shell）Material, including Zhejiang SF Oilless Bearing Co., Ltd. and Jiashan round trip flight lubrication material
Expect Co., Ltd（102977975 B of patent of invention CN）Successfully substitute lead with nontoxic low-melting-point metal element bismuth.Shanghai work
104647827 A of patent of invention CN of journey technology university and Hewei Ind. Co., Ltd., Shanghai's application are elaborated with unleaded tin
Monel substitutes leaded Cu-based sliding bearing（Bearing shell）Material.German Federal-Mogul Wiesbaden GMBH's application
Patent of invention CN 106163706 A prepare a kind of unleaded Cu-based sliding bearing with added with the tantnickel copper alloy of tellurium additive
（Bearing shell）Material.The unleaded Cu-based sliding bearing developed at present（Bearing shell）Material replaces leaded Cu-based sliding bearing material
Application in bushing has many successful cases, but its performance includes alloy strength and friction and wear characteristic all needs further
It improves, micro- addition and variation and process improving are to improve a kind of reliable approach of the strength of materials.There is test data
Show to be with the addition of the material crystalline result of a small amount of phosphorus and not phosphorous difference.Fig. 1 shows 0.1% phosphorus of addition to nickel gun-metal
The effect of crystal grain refinement.Therefore the friction and wear behavior of the material also has improvement.Phosphorus-containing alloy friction factor（0.086）And abrasion
Amount（0.005mm）It is below no phosphorus alloy friction factor（0.116）And wear extent（0.008mm）.
The content of the invention
A kind of new leadless copper base bearing of the present invention（Bearing shell）Material, the copper alloy formula are by weight percentage：Cu
79-99% copper, Sn 0.5-10% tin, Ni 0.5-10% nickel, P 0.01-0.5%, other trace elements and impurity content sum total
No more than 0.5%, it is allowed to improve alloy density and bond strength, further improves friction and wear behavior.
Present invention determine that a kind of selection method of alloy copper powder particle.+ 140 mesh content≤0.5%；- 140 ~+200 mesh contain
Amount 1 ~ 25%；- 200 ~+325 mesh contents 5 ~ 50%；- 325 mesh contents 10 ~ 80%.
Present invention determine that a kind of strip transfer matic production method, the precision of strip is improved.By the thickness of general material
Tolerance 0.04mm, is increased to 0.02mm.
Description of the drawings
Fig. 1 is the metallograph for the nickel gun-metal (CuNi2SnP0.1) for being with the addition of 0.1% phosphorus.
Fig. 2 is the metallograph of without phosphorus nickel gun-metal (CuNi2Sn).
Specific embodiment
Help to illustrate the present invention using example below, but the present invention is not limited except as.It is interpreted as reading the present invention
After content, those skilled in the art are to the various changes of the present invention in the range of claims limitation.
Embodiment 1.
Implement purpose：Overall thickness 3.0mm, width 260mm, length 300000mm, copper alloy layer thicknesses 0.6mm is prepared to contain
Phosphor tin nickel leadless copper base bearing（Bearing shell）Material.
Implementation steps：（1）Steel plate pre-processes：Selection carbon content is not more than 0.24wt%, trade mark 37-2G, wall thickness
2.6mm, length are the carbon spring tape of 288000mm, oil removal treatment, and carry out polishing hair to a surface of steel plate with abrasive band
Change is handled；（2）Powdering：Copper alloy powder is equably layered on surface of the steel plate through frosting treatment, powdering thickness 1.2mm, copper
The compositing formula of alloy powder is：Copper 94.5wt%, tin 1.0wt%, nickel 4.0wt%, phosphorus 0.10wt%, other impurity contents are total
With 0.40%；The particle diameter distribution of copper alloy powder is：+ 100 mesh contents be 0%, -100 ~+140 mesh contents be 0.3%, -140 ~
+ 200 mesh contents are 15%, and -200 ~+325 mesh contents are 30%, and -325 mesh contents are 54.7%；（3）Just burn cooling：Copper conjunction will be covered with
The steel plate at bronze end is sintered and cools down under hydrogen nitrogen hybrid protection atmosphere, and hydrogen volume accounting is 30% in gaseous mixture, nitrogen
Volume accounting is 70%；920 DEG C of sintering temperature, sintering time are 30 minutes；（4）Breaking down：By the material after first burn on cold-rolling mill
Thickness 2.75mm is rolling to, rolling accuracy is ± 0.02mm；（5）Resintering cools down：By the material after breaking down in hydrogen nitrogen hybrid protection
It is sintered and is cooled down again under atmosphere, hydrogen volume accounting is 30% in mixed gas, and nitrogen volume accounting is 70%；Sintering temperature
950 DEG C of degree, sintering time are 30 minutes；（6）Finish rolling：Material after resintering is rolled on cold-rolling mill, thickness after rolling
It is 2.7 ± 0.01mm to get to required leadless copper base double metallic composite material.
After testing, the density of the copper alloy layer of material prepared is 8.80g/cm3, relative density 98.5%, copper alloy layer
Hole full-size is 0.01mm in metallographic structure, and end mill experiment gained friction factor is 0.086, wear extent 0.005mm.And
Contrast test shows that the density of existing CuPb24Sn1 bush materials copper alloy layer is 9.12 g/cm3, relative density 97.0%,
Friction factor is 0.097, wear extent 0.006mm.Illustrate that the leadless copper base composite property prepared by the present invention is better than
CuPb24Sn1 bush materials.
Embodiment 2.
Implement purpose：Prepare overall thickness 2.7mm, width 260mm, length 350000mm, the nothing of copper alloy layer thicknesses 0.5mm
Lead bronze bimetallic composite material（Winding）.
Implementation steps：（1）Steel plate pre-processes：Selection carbon content is not more than 0.24wt%, trade mark 37-2G, wall thickness
2.4mm, the carbon spring tape that length is 336000mm, oil removal treatment, and polishing hair is carried out to a surface of steel plate with abrasive band
Change is handled；（2）Powdering：Copper alloy powder is equably layered on surface of the steel plate through frosting treatment, powdering thickness 1.0mm, copper
The compositing formula of alloy powder is：Copper 95.5wt%, tin 2.0wt%, nickel 2.0wt%, phosphorus 0.10wt%, other impurity contents are total
With 0.4%, the particle diameter distribution of copper alloy powder is：+ 100 mesh contents be 0%, -100 ~+140 mesh contents be 0.3%, -140 ~+
200 mesh contents are 12%, and -200 ~+325 mesh contents are 28%, and -325 mesh contents are 59.7%；（3）Just burn cooling：Copper conjunction will be covered with
The steel plate at bronze end is sintered and cools down under hydrogen nitrogen hybrid protection atmosphere, and hydrogen volume accounting is 30% in gaseous mixture, nitrogen
Volume accounting is 70%；990 DEG C of sintering temperature, sintering time are 30 minutes.（4）Breaking down：By the material after first burn on cold-rolling mill
Thickness 2.75mm is rolling to, rolling accuracy is ± 0.02mm；（5）Resintering cools down：By the material after breaking down in hydrogen nitrogen hybrid protection
It is sintered and is cooled down again under atmosphere, hydrogen volume accounting is 30% in mixed gas, and nitrogen volume accounting is 70%；Sintering temperature
1010 DEG C of degree, sintering time are 30 minutes；（6）Finish rolling：Material after resintering is rolled on cold-rolling mill, thickness after rolling
It is 2.7 ± 0.02mm to get to required leadless copper base double metallic composite material.
After testing, the density of the copper alloy layer of material prepared is 8.84g/cm3, relative density 99.1%, copper alloy layer
Hole full-size is 0.01mm in metallographic structure, and end mill experiment gained friction factor is 0.094, wear extent 0.004mm.And
Contrast test shows that the density of existing CuPb24Sn1 bush materials copper alloy layer is 9.12 g/cm3, relative density 97.0%,
Friction factor is 0.097, wear extent 0.006mm.The leadless copper base composite property added prepared by the bright present invention is excellent
In CuPb24Sn1 bush materials.
Claims (7)
1. a kind of leadless copper base bearing of nickel containing phosphor tin（Bearing shell）Material, it is characterised in that：It is that 0.24wt% is not more than by carbon content
Carbon steel flaggy be combined with Pb-free copper-alloy layer；The copper alloy formula is by weight percentage：Cu 79-99%, Sn
0.5-10%, Ni 0.5-10%, P 0.01-0.5%, other trace elements and impurity content sum total are no more than 0.5%.
2. one kind leadless copper base bearing material of nickel containing phosphor tin according to claim 1, copper alloy therein is first to smelt into
Alloying pellet（For example oval, sub- spherical powder is made by atomization process）, using（Such as by being coated in mild steel automatically
Belt surface is sintered calendering）Strip transfer matic production, formation is high-precision to roll strip.
3. one kind leadless copper base bearing material of nickel containing phosphor tin according to claim 2, the Pb-free copper-alloy particle diameter point
Cloth is：+ 140 mesh content≤0.5%；- 140 ~+200 mesh contents 1 ~ 25%；- 200 ~+325 mesh contents 5 ~ 50%；- 325 mesh contents 10 ~
80%。
4. the leadless copper base of nickel containing phosphor tin composite material according to claim 1, it is characterised in that：The phase of the copper alloy layer
98% is not less than to density.
5. the leadless copper base of nickel containing phosphor tin composite material according to claim 1, it is characterised in that：The gold of the copper alloy layer
Phase constitution, the biggest size of element of the either direction in any one hole are not more than 0.02mm.
6. a kind of method for preparing the leadless copper base of nickel containing phosphor tin composite material described in claim 1, it is characterized in that powder metallurgy
Method comprises the following steps：（1）Steel plate pre-processes：Steel plate is subjected to oil removal treatment, and one of surface of steel plate is subjected to hair
Change is handled；（2）Powdering：Alloy powder is equably layered on steel strip surface using special equipment, powdering thickness range for 0.4mm ~
2mm, width of steel band scope are 100mm ~ 300mm；（3）Just burn cooling：The steel band of copper alloy powder will be covered in restitutive protection
It is sintered under atmosphere, is then cooled down for the first time, 800 ~ 1100 DEG C of sintering temperature, sintering time is 10 ~ 40 minutes；（4）Breaking down：It is logical
The requirement tolerance thicknesses of the material wall thickness value after mill milling to breaking down are crossed, the margin of tolerance is ± 0.02mm；（5）Resintering cools down：
Material after breaking down under restitutive protection's atmosphere is sintered again, is then cooled down, 800 ~ 1100 DEG C of sintering temperature is burnt
It is 10 ~ 40 minutes to tie the time；（6）Finish rolling：By the thickness requirement tolerance thicknesses of the material wall thickness value after mill milling to finish rolling,
The margin of tolerance is ± 0.01mm.
7. the sintering cooling step in preparation method according to claim 6, it is characterised in that：The reduction protection
Atmosphere is the gaseous mixture of hydrogen and nitrogen, and wherein hydrogen volume accounting is 10 ~ 40%, and nitrogen volume accounting is 60 ~ 90%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711324101.4A CN108103349A (en) | 2017-12-13 | 2017-12-13 | A kind of leadless copper base bearing of the nickel containing phosphor tin（Bearing shell）Material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711324101.4A CN108103349A (en) | 2017-12-13 | 2017-12-13 | A kind of leadless copper base bearing of the nickel containing phosphor tin（Bearing shell）Material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747229A (en) * | 2018-07-31 | 2018-11-06 | 苏州虎伏新材料科技有限公司 | A kind of multiple layer metal material and preparation method thereof being used to prepare sliding bearing |
| CN109238899A (en) * | 2018-10-17 | 2019-01-18 | 奇瑞汽车股份有限公司 | A kind of the premature wear analyzing evaluation method and its production technology of engines connecting rod bushing |
| CN112264616A (en) * | 2020-10-27 | 2021-01-26 | 武汉科技大学 | Preparation method of CuSnNiP-based copper alloy lubricating friction-resistant material by liquid-phase sintering method |
| CN112301253A (en) * | 2020-10-10 | 2021-02-02 | 福建联其新材料有限公司 | Titanium bronze material and method for manufacturing alloy plate by using same |
| CN115007967A (en) * | 2022-04-19 | 2022-09-06 | 东南大学 | Additive preparation method and application of high-performance bearing bush bimetallic material |
| CN115522097A (en) * | 2022-09-06 | 2022-12-27 | 四川双飞虹精密部件有限公司 | Sliding bearing bush material and composite preparation process thereof |
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| CN102228991A (en) * | 2011-06-16 | 2011-11-02 | 中南大学 | Environment-friendly lead-free copper-based self-lubricating material and preparation process thereof |
| CN102935512A (en) * | 2011-08-15 | 2013-02-20 | 上海核威实业有限公司 | Marine copper lead alloy bearing bush material and preparation method thereof |
| CN106544541A (en) * | 2016-11-14 | 2017-03-29 | 合肥工业大学 | A kind of high-strength leadless copper base sliding material and preparation method thereof |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102228991A (en) * | 2011-06-16 | 2011-11-02 | 中南大学 | Environment-friendly lead-free copper-based self-lubricating material and preparation process thereof |
| CN102935512A (en) * | 2011-08-15 | 2013-02-20 | 上海核威实业有限公司 | Marine copper lead alloy bearing bush material and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108747229A (en) * | 2018-07-31 | 2018-11-06 | 苏州虎伏新材料科技有限公司 | A kind of multiple layer metal material and preparation method thereof being used to prepare sliding bearing |
| CN109238899A (en) * | 2018-10-17 | 2019-01-18 | 奇瑞汽车股份有限公司 | A kind of the premature wear analyzing evaluation method and its production technology of engines connecting rod bushing |
| CN112301253A (en) * | 2020-10-10 | 2021-02-02 | 福建联其新材料有限公司 | Titanium bronze material and method for manufacturing alloy plate by using same |
| CN112264616A (en) * | 2020-10-27 | 2021-01-26 | 武汉科技大学 | Preparation method of CuSnNiP-based copper alloy lubricating friction-resistant material by liquid-phase sintering method |
| CN115007967A (en) * | 2022-04-19 | 2022-09-06 | 东南大学 | Additive preparation method and application of high-performance bearing bush bimetallic material |
| CN115007967B (en) * | 2022-04-19 | 2024-04-09 | 东南大学 | Material increase preparation method and application of high-performance bearing bush bimetallic material |
| CN115522097A (en) * | 2022-09-06 | 2022-12-27 | 四川双飞虹精密部件有限公司 | Sliding bearing bush material and composite preparation process thereof |
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Application publication date: 20180601 |