CN106151276A - A kind of environmental protection bearing shell - Google Patents
A kind of environmental protection bearing shell Download PDFInfo
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- CN106151276A CN106151276A CN201610547031.8A CN201610547031A CN106151276A CN 106151276 A CN106151276 A CN 106151276A CN 201610547031 A CN201610547031 A CN 201610547031A CN 106151276 A CN106151276 A CN 106151276A
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- Prior art keywords
- layer
- alloy
- bearing shell
- attrition
- tile
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
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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
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/122—Multilayer structures of sleeves, washers or liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
- F16C2204/12—Alloys based on copper with tin as the next major constituent
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a kind of environmental protection bearing shell, the upper tile used including relative engagement and lower tile, the inwall of upper tile and lower tile is provided with alloy-layer, and alloy-layer is the most thickening to center bottom from the opposite surface of upper tile and lower tile, and alloy-layer is externally provided with electroplate lead-free antifriction layer.Raw material alloy layer of the present invention does not contains heavy metal lead element, more conforms to environmental requirement；Raw material is the winding of casting continuously, and the grain size of alloying component is thinner, and serviceability is higher；The present invention the most thinning formula wall thickness can make product after mounting, forms more reasonably oil clearance；Electroplate lead-free antifriction layer of the present invention uses leadless double-layer stannum copper coating, improves antifriction layer hardness, without lead element during processing and using, improves Wear Resistance energy while reaching environmental protection.
Description
Technical field:
The present invention relates to bearing shell, particularly relate to a kind of environmental protection bearing shell.
Background technology:
The effect of bearing shell is not only to want to protect crankshaft journal, and when frequent start and stop, when bearing shell friction pair is in border profit
When cunning or mixed lubricating state, also can prevent the premature wear of crankshaft journal, thus protect the operating reliability of bent axle.Advanced
Engine technology more and more higher to the requirement of bearing shell；Starting more frequently, start and stop or hybrid power engine will cause axle
Watt premature wear.The increase of engine flare pressure and the lightweight of electromotor, add the load of bearing shell.Low viscosity machine
Oil, the crankshaft surface of roughening, higher temperature makes bearing shell premature wear more aggravate.
The bearing shell of traditional structure, has been unsatisfactory for the demand for development of internal-combustion engine technology.More come at environmental regulation and discharge standard
The strictest today, it is desirable to realize the environmental issue of car combustion engine, it is not only use clean energy resource and reduces greenhouse gases row
Putting, more importantly its parts used and parts manufacture process to need to reach more environmentally-friendly requirement.Traditional approach
The bush material containing lead element that used and coating, will be phased out.
Summary of the invention:
In order to make up the deficiency of prior art problem, it is an object of the invention to provide a kind of environmental protection bearing shell, can prevent because starting
Machine performance improves the bearing shell premature wear that caused, can meet again unleaded during assembling uses of bearing shell, exist again simultaneously
Arriving unleaded purpose in bearing shell manufacture process, its performance is greatly improved, sturdy and durable, can reduce again friction, at it simultaneously
Manufacture in the course of processing and realize environment friendly and pollution-free during assembling use.
Technical scheme is as follows:
Environmental protection bearing shell, the upper tile used including relative engagement and lower tile, it is characterised in that described upper tile and lower tile
Inwall be provided with alloy-layer, alloy-layer is the most thickening to center bottom, outside alloy-layer from the opposite surface of upper tile and lower tile
It is provided with electroplate lead-free antifriction layer.
Alloy-layer use CuSn8Ni or CuSn10Bi4 material cast winding continuously, when use CuSn8Ni material company
During continuous casting winding, component content is Sn:7.0 ~ 9.0%, Ni:0.7 ~ 1.3%, Cu: surplus；When using CuSn10Bi4 material
Continuously during casting winding, CuSn10Bi4 component content is Sn:9 ~ 11%, Bi:3 ~ 5%, Cu: surplus.
Described environmental protection bearing shell, it is characterised in that described electroplate lead-free antifriction layer has and interior is outwards followed successively by electronickelling grid
Layer, internal layer stannum copper anti-attrition layer, outer layer stannum copper anti-attrition layer, wherein electronickelling gate layer thickness is 1 ~ 3 μm；Internal layer stannum copper anti-attrition layer thickness
Be 1 ~ 3 μm, by weight percentage copper content be 8 ~ 12%；Outer layer stannum copper anti-attrition layer thickness is 15 ~ 20 μm, by weight percentage
Meter copper content is 1.5 ~ 4%.
Environmental protection bearing shell, it is characterised in that described electroplate lead-free antifriction layer has and interior is outwards followed successively by electronickelling gate layer, internal layer
Stannum copper anti-attrition layer, outer layer stannum copper anti-attrition layer, wherein electronickelling gate layer thickness is 1 ~ 3 μm；Internal layer stannum copper anti-attrition layer thickness is 1 ~ 3 μ
M, by weight percentage copper content are 10%；Outer layer stannum copper anti-attrition layer thickness is 15 ~ 20 μm, by weight percentage copper content
It is 3%.
Described environmental protection bearing shell, it is characterised in that described upper tile and lower tile inwall are sequentially provided with alloy-layer, plating
After unleaded antifriction layer, the wall ratio thinning 0.005 ~ 0.015mm of center bottom thickness at distance boil on the nape opposite the mouth 20 °, wall ratio at boil on the nape opposite the mouth
Thinning 0.02 ~ the 0.04mm of center bottom thickness.
The invention have the advantage that
1, raw material alloy layer of the present invention does not contains heavy metal lead element, more conforms to environmental requirement；This raw material is casting continuously
Winding, the grain size of alloying component is thinner, and serviceability is higher；
2, the present invention the most thinning formula wall thickness can make product after mounting, forms more reasonably oil clearance；
3, electroplate lead-free antifriction layer of the present invention uses leadless double-layer stannum copper coating, improves antifriction layer hardness, processes and used
Without lead element in journey, while reaching environmental protection, improve Wear Resistance energy.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the hierarchy schematic diagram of electroplate lead-free antifriction layer of the present invention.
Fig. 3 is lead-free of the present invention and traditional copper alloy material fatigue strength comparison diagram.
Detailed description of the invention:
See accompanying drawing:
Environmental protection bearing shell, the upper tile 1 used including relative engagement and lower tile 2, the inwall of upper tile 1 and lower tile 2 is provided with
Alloy-layer 3, alloy-layer 3 is the most thickening to center bottom from the opposite surface of upper tile and lower tile, and alloy-layer 3 is externally provided with plating nothing
Lead antifriction layer 4.
What alloy-layer 3 used CuSn8Ni or CuSn10Bi4 material casts winding continuously, when the company using CuSn8Ni material
During continuous casting winding, component content is Sn:7.0 ~ 9.0%, Ni:0.7 ~ 1.3%, Cu: surplus；When using CuSn10Bi4 material
Continuously during casting winding, CuSn10Bi4 component content is Sn:9 ~ 11%, Bi:3 ~ 5%, Cu: surplus.
Electroplate lead-free antifriction layer 4 has and interior is outwards followed successively by electronickelling gate layer 4-1, internal layer stannum copper anti-attrition layer 4-2, outer layer stannum copper
Anti-attrition layer 4-3, wherein electronickelling gate layer 4-1 thickness is 1 ~ 3 μm；Internal layer stannum copper anti-attrition layer 4-2 thickness is 1 ~ 3 μm, by weight hundred
Proportion by subtraction meter copper content is 10%；Outer layer stannum copper anti-attrition layer 4-3 thickness be 15 ~ 20 μm, by weight percentage copper content be 3%.
After upper tile 1 and lower tile 2 inwall are sequentially provided with alloy-layer 3, electroplate lead-free antifriction layer 4, at distance boil on the nape opposite the mouth 20 °
Thinning 0.005 ~ the 0.015mm of wall ratio center bottom thickness, the thinning 0.02 ~ 0.04mm of wall ratio center bottom thickness at boil on the nape opposite the mouth.
Make a concrete analysis of as follows:
1, alloy-layer component analysis:
Alloy-layer 3 used in the present invention is between upper tile 1 and lower tile 2 and electroplate lead-free antifriction layer 4, and alloy-layer 3 selects
Winding with the unleaded continuous casting of CuSn8Ni or CuSn10Bi4 both trades mark.The cuprio bearing shell that traditional mode is used
Raw material, is most commonly used that the alloy-layer trade mark is CuPb24Sn or CuPb20Sn4 both, used in the present invention in order to verify
The advantage of leaded acid bronze alloy layer and reliability in lead-free alloy layer and traditional handicraft, do following contrast:
Material composition and hardness balance:
| Sequence number | Material trademark | Contents of Main Components, percentage by weight (%) | Alloy rigidity |
| A | CuSn8Ni | Sn:7.0 ~ 9.0, Ni:0.7 ~ 1.3, Cu: surplus | 70~130HB |
| B | CuSn10Bi4 | Sn:7.0 ~ 9.0, Bi:3 ~ 5, Cu: surplus | 76~114HB |
| C | CuPb24Sn | Pb:19 ~ 27, Sn:0.6 ~ 2.0, Cu: surplus | 45~70HB |
| D | CuPb20Sn4 | Pb:18 ~ 24, Sn:3.0 ~ 4.5, Cu: surplus | 65~90HB |
In upper table, A and B is lead-free alloy material used in the present invention, C and D is traditional containing Pb copper-based alloy material, from
It can be seen that material alloys layer used in the present invention is without heavy metal element Pb in upper table, and its hardness also above
The tradition hardness containing Pb material.The Pb element added in alloy material, it primarily serves the purpose of the anti-bite viscosity of reinforcing material, improves
Its fatigue strength.In the lead-free alloy layer used in the present invention, without lead element, in order to verify its impact on serviceability,
We conducted the test of fatigue strength, experiment condition is: rotating speed 2680r/min, and test uses step increment of load method, every grade of load
Increment is 5MPa, operating 3.12 × 10 under every grade of load6Circulation, the comparison diagram 3 that test obtains is as follows:
By in Fig. 3 it can be seen that lead-free alloy material used in the present invention, its fatigue strength values and traditional copper alloy material
Material is compared, close to or be better than tradition material lead-containing alloy material.
By comparison number of patent application 201010506167.7, this proprietary alloy layer trade mark is CuSn8InNi, and it is tired strong
Degree test method is slightly different with test method used in the present invention, although its ultimate value can also reach 150MPa, but because of
For containing In element in its composition, manufacturing cost is higher, and processing method is more complicated.
Aligning the number of applying for a patent 201410607907.4 by ratio, this patent is going in substantive examination state, its alloy-layer
The trade mark is CuNi2, and this material, owing to not having the softer elements such as Sn, makes embedding Tibetan property that bearing shell should possess and compliance poor.
Invent or just in the patent of substantive examination for above-mentioned two, although also can accomplish the effect without Pb in composition, but it manufactures
Method is sintering and forms, and sintered sheets is in sintering procedure, it is necessary to first polish steel plate, and such alloy powder is spread
Afterwards, will certainly produce wedge angle burr not of uniform size at binder course, these wedge angle burrs are the fatigue during using in the later stage
Source point.Sintered sheets can produce pore because feeding intake uneven and temperature is unstable in alloy-layer simultaneously, and binder course is also
Alloy can be produced because of dealing with improperly to come off.And two kinds of alloy materials used in the present invention are the winding of casting continuously.
Raw material alloy layer does not contains heavy metal lead element, more conforms to environmental requirement；Simultaneously because the volume that manufacture process is casting continuously
Band, steel plate is bright and clean, and alloy is the most smooth closely with the binder course of steel plate, and the grain size of the alloying component of casting is more continuously
Carefully, serviceability is higher.
2, alloy layer thickness dimension analysis:
In the present invention, liner wall thickness is processed as the most uniform thinning pattern.This design is easy to oil film wedge and is formed, and can make oil
Film reaches a stable hydrodynamic lubrication.Reducing vibration and the abrasion of bearing, in tradition processing, wall thickness is via bottom
Consistency of thickness in the range of arriving 20 °.This Thickness Mode, can cause the load of bearing shell to be limited in a less bearing shell surface
On Ji, reduce the maximum pressure point of oil film thickness.The most this mode can make can not form one between bearing shell and bearing all
Even gap, irrational oil clearance can cause hydrodynamic lubrication and the vibration of bent axle of instability.So can cause bearing shell
Early fatigue and fault.When processing, we using center bottom thickness as the thickest position of whole bearing shell, away from boil on the nape opposite the mouth 20 °
Place the wall ratio thinning 0.005 ~ 0.015mm of center bottom thickness, the thinning 0.02 ~ 0.04mm of wall ratio center bottom thickness at boil on the nape opposite the mouth
Left and right, can make bearing shell there is a gap the most thinning, when bearing shell is assembling it by rational torsion in this way
After, the closed-loop of the rounding of can be formed, oil clearance is the most reasonable.
3, electroplate lead-free antifriction layer:
Owing to bearing shell should carry heavy load, having the function of protection bent axle again concurrently, this just requires that bearing shell should have high rigidity
Alloy-layer, needs one layer of softer plating anti-attrition layer at alloyed layer simultaneously.
The plating anti-attrition layer overwhelming majority that domestic tradition bearing shell uses is PbSnCu this ternary anti-attrition layer.This leaded
Coating, due to the existence of Pb, makes the running-in characteristic of bearing shell, embedding Tibetan property, compliance, anti-bite viscosity etc. good, and its drawback is to make axle
Watt increase at the failure phenomenon of the aspect such as abrasion, burn into cavitation pitting, fatigue, reduce the service life of bearing shell, simultaneously in environmental protection day
Today that benefit is severe, Pb pollutes and makes it gradually be eliminated.
The Pb-free wave soldering anti-attrition layer of the present invention, uses leadless double-layer stannum copper electrodeposited coating, and its structural order is the most successively
For alloy-layer 3, at the nickel-barrier layer 4-1 that the first electroplating thickness of alloy-layer 3 is 1 ~ 3 μm, then re-plating internal layer stannum copper anti-attrition layer 4-2 and
Outer layer stannum copper anti-attrition layer 4-3.
The same with traditional PbSnCu ternary electrodeposited coating, there is one layer to prevent between leadless double-layer stannum copper electrodeposited coating and nickel-barrier layer
Diffusion layer, stops the diffusion of copper, in order to avoid reducing wearability and the fatigue resistance of bearing shell.According to this thinking, when SnCu coating exists
When being heated in operating, the copper in coating can spread in nickel-barrier layer.Coating performance is affected in order to prevent the diffusion of copper, must
The diffusion that need make copper minimizes.
Therefore the present invention is during plating anti-attrition layer, uses the structure of double-deck stannum copper coating: near alloy-layer 4
Internal layer stannum copper anti-attrition layer 4-2 improves copper content, in the outer layer stannum copper anti-attrition layer 4-3 of bent axle, is reducing copper content, make
The composition of outer layer stannum copper anti-attrition layer 4-3 and structure meet the performance required by coating surface, and interior-layer layer stannum copper anti-attrition layer 4-2 is high
Copper content can stop the copper inner layer in outer layer to expand single diffusion, so that top layer remains the Optimality of SnCu coating itself
Energy.
In order to select out internal layer stannum copper anti-attrition layer, the concrete content of copper in 4-2, we test the coating of different Cu content, heat
After 130 °, observe its microstructure, finally selected the content of copper by weight percentage in internal layer stannum copper anti-attrition layer by comparison
It is 10%.
In order to determine the copper content in outer layer stannum copper anti-attrition layer 4-3, we use seizure to sting test and screen.We
Selecting bearing shell a size of ∮ 50 × wide B20 × eT1.5, rotating speed is 3600R/min, and lubricating oil inlet temperature 100 DEG C, axle journal is coarse
Degree is Rz0.8.Load is incremented by 5MPa every time.When a watt back of the body temperature reaches predetermined limit value more than 200 DEG C or moment of torsion, then bearing shell is described
Seizure occur, being determined by experiment copper content by weight percentage is 2%, and its thickness is set as 1 ~ 3 μm.Pass through copper content
With hardness, tensile strength, the relation of elongation percentage, final selected rational copper content should be between 1.5% ~ 3.0%, is set by its thickness
It is set to 15 ~ 20 μm.
Simulation bearing shell uses environment and uses X-ray microanalysis instrument, tests the situation that coating varies with temperature, when stannum copper
Running after 1000h at a temperature of coating 130 DEG C, copper loss fails to keep an appointment 50%, and the copper loss vector of double-deck stannum copper coating is the most much lower, extremely
The 70% of original copper content can be kept less.Therefore we determined that the double-deck coating that internal layer copper content 10% and outer layer copper content are 3%
Structure, when this structure in use, due to thermal diffusion principle, make the copper content on outer abrasion resistant surface be maintained at about 2%.
So can keep the performances such as its original anti-bite viscosity energy, wear-resisting and resisting fatigue.
Double-decker coating finally carries out fatigue test, wear test, cavitation pitting and corrosion testing, and experiment shows the present invention
Fatigue resistance and traditional PbSnCu ternary electrodeposited coating zero difference of leadless double-layer stannum steel structure, anti-wear performance improves 2 times
Above, anti-cavitation pitting ability adds more than 30 times, the raising of resistance to corrosion, reaches 8 times and extend follow-up in time after 1000h
Also can increase.
The double-deck stannum copper coating of the present invention, compared with traditional PbSnCu ternary electrodeposited coating coating, has the most wear-resisting
Property, anticorrosive, resistance to pitcorrosion energy, and its resisting fatigue and anti-bite viscosity can not reduce.Double coating can effectively stop the heat of copper
Diffusion, prevents the coating damage caused due to abrasion of particles corrosion fatigue and cavitation pitting, improves the service life of bearing shell.
The hard tin coating bearing shell of application number 201020217382.0, antifriction layer is by stannum copper alloy coating and pure tin coating structure
Becoming, stannum copper alloy coating is electroplated on nickel-barrier layer, and pure tin coating is electroplated on stannum copper alloy coating.Stannum copper alloy coating is by weight
Percentages is by stannum 85 ~ 98%, and remaining is the bianry alloy composition of copper, and pure tin coating is by weight percentage by 100%
Stannum is constituted, and the thickness of stannum copper alloy coating is 3 ~ 5 μm, and the thickness of pure tin coating is 3 ~ 5 μm, and the thickness of nickel-barrier layer is 1 ~ 3 μm.
Although this patent is also the anti-attrition layer of stannum copper coating structure, but it is monolayer stannum steel structure, after its drawback is to be heated, copper coin
Element can spread to nickel-barrier layer, causes copper content to reduce, and the gun-metal bianry alloy anti-attrition layer described by this patent only has 3 simultaneously
The thickness of ~ 5 μm, is the requirement of 0.01 ~ 0.05mm according to plating anti-attrition layer thickness, and anti-attrition layer thickness is the thinnest does not reaches electrodeposited coating for it
Due function.
The hard tin coating bearing shell of application number 201020217383.5 pairs, the first stannum copper alloy coating by weight percentage by
Stannum 85 ~ 95%, the second stannum copper alloy coating is by weight percentage by stannum 85 ~ 98%, the thickness of the first stannum copper alloy coating
Degree is 3 ~ 5 μm, and the thickness of the second stannum copper alloy coating is 5 ~ 8 μm, and the thickness of pure tin coating is 3 ~ 5 μm.The thickness of nickel-barrier layer
It it is 1 ~ 3 μm.Although this patent also has double-deck stannum copper binary alloy structure, but its drawback is the first stannum copper alloy coating of this patent
With the content of the second stannum copper alloy coating almost without significant difference, this patent have ignored after stannum copper alloy coating is heated equally
Copper diffusion problem, double-deck Pot metal fails to effectively play the effect stoping diffusion.
Claims (5)
1. an environmental protection bearing shell, including relative engagement use upper tile and lower tile, it is characterised in that described upper tile and
The inwall of lower tile is provided with alloy-layer, and alloy-layer is the most thickening to center bottom from the opposite surface of upper tile and lower tile, closes
Layer gold is externally provided with electroplate lead-free antifriction layer.
High-performance environment-friendly bearing shell the most according to claim 1, it is characterised in that described alloy-layer use CuSn8Ni or
CuSn10Bi4 material cast winding continuously, when using the continuously casting winding of CuSn8Ni material, component content is Sn:
7.0 ~ 9.0%, Ni:0.7 ~ 1.3%, Cu: surplus；When using the winding of casting continuously of CuSn10Bi4 material, CuSn10Bi4 becomes
Dividing content is Sn:9 ~ 11%, Bi:3 ~ 5%, Cu: surplus.
Environmental protection bearing shell the most according to claim 1, it is characterised in that described electroplate lead-free antifriction layer have interior outwards the most successively
For electronickelling gate layer, internal layer stannum copper anti-attrition layer, outer layer stannum copper anti-attrition layer, wherein electronickelling gate layer thickness is 1 ~ 3 μm；Internal layer stannum copper
Anti-attrition layer thickness be 1 ~ 3 μm, by weight percentage copper content be 8 ~ 12%；Outer layer stannum copper anti-attrition layer thickness is 15 ~ 20 μm, presses
Percentage by weight meter copper content is 1.5 ~ 4%.
4. the environmental protection bearing shell described in, it is characterised in that described electroplate lead-free antifriction layer have interior be outwards followed successively by electronickelling gate layer,
Internal layer stannum copper anti-attrition layer, outer layer stannum copper anti-attrition layer, wherein electronickelling gate layer thickness is 1 ~ 3 μm；Internal layer stannum copper anti-attrition layer thickness is 1
~ 3 μm, by weight percentage copper content are 10%；Outer layer stannum copper anti-attrition layer thickness is 15 ~ 20 μm, by weight percentage cupric
Amount is 3%.
Environmental protection bearing shell the most according to claim 1, it is characterised in that described upper tile and lower tile inwall are sequentially provided with
After alloy-layer, electroplate lead-free antifriction layer, the wall ratio thinning 0.005 ~ 0.015mm of center bottom thickness at distance boil on the nape opposite the mouth 20 ° is right
Thinning 0.02 ~ the 0.04mm of wall ratio center bottom thickness at Kou.
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| CN201610547031.8A CN106151276A (en) | 2016-07-13 | 2016-07-13 | A kind of environmental protection bearing shell |
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| CN201610547031.8A CN106151276A (en) | 2016-07-13 | 2016-07-13 | A kind of environmental protection bearing shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030271A (en) * | 2019-05-07 | 2019-07-19 | 哈尔滨工程大学 | A kind of large axle bush of integrated pressure sensor |
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| CN201771968U (en) * | 2010-06-07 | 2011-03-23 | 湖北安达汽车零部件有限公司 | Bearing bush with double hard tin plating layers |
| CN101845569A (en) * | 2010-06-23 | 2010-09-29 | 广州市安达汽车零件有限公司 | Copper base alloy material for sliding bearing |
| CN202646388U (en) * | 2012-07-03 | 2013-01-02 | 浙江显峰汽车配件有限公司 | Thin-walled bearing shell of high-power diesel engine |
| JP2015071801A (en) * | 2013-10-02 | 2015-04-16 | 大豊工業株式会社 | Aluminum alloy and sliding member |
| CN104832540A (en) * | 2014-10-31 | 2015-08-12 | 北汽福田汽车股份有限公司 | Bearing bush used for engine and engine therewith |
| CN104454999A (en) * | 2014-11-03 | 2015-03-25 | 烟台大丰轴瓦有限责任公司 | Alloy material CuSn10Bi3 used for bearing bush base layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110030271A (en) * | 2019-05-07 | 2019-07-19 | 哈尔滨工程大学 | A kind of large axle bush of integrated pressure sensor |
| CN110030271B (en) * | 2019-05-07 | 2023-12-19 | 哈尔滨工程大学 | Large-sized bush integrated with pressure sensor |
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Application publication date: 20161123 |