CN1991188A - Aluminium-radical three-layer composite self-lubricating bearing and manufacturing method thereof - Google Patents
Aluminium-radical three-layer composite self-lubricating bearing and manufacturing method thereof Download PDFInfo
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- CN1991188A CN1991188A CNA2005100623215A CN200510062321A CN1991188A CN 1991188 A CN1991188 A CN 1991188A CN A2005100623215 A CNA2005100623215 A CN A2005100623215A CN 200510062321 A CN200510062321 A CN 200510062321A CN 1991188 A CN1991188 A CN 1991188A
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Abstract
The invention relates to an aluminium matrix three-layer composite self-lubricating bearing, whose base body is aluminium alloy. A layer of spherical bronze powder without lead, whose thickness is 0.10-0.15mm is combined on the working surface of base. Anti-friction and wear resistance plastic layer, whose thickness is 0.02-0.07mm and which comprises PTFE, molybdenum disulfide, and carbon fiber so on. The invention discloses components of anti-friction and wear resistance plastic layer without lead and the manufacturing method. Compared with prior international DU bearing, it is not only provided with merits of DU bearing, which is good wear resistance, little friction coefficient, low noise, good running performance and self lubricating so on; but also better lightweight, better wear resistance and no lead poison. It is especially applied in the occasion with high demand of lightweight, for example aerospace engineering; meanwhile in following industries such as food and drink mechanism, pharmaceutical machine, household appliance, fitness appliance and office equipments so on, in which DU bearing can not be used and health environmental protection is demanded.
Description
Affiliated technical field
The present invention belongs to the bearing group in International Patent Classification (IPC), i.e. F16C, the particularly method for making of aluminium-radical three-layer composite self-lubricating bearing material and the bearing made thus.
Background technique
As far back as 20 middle of century, it is matrix that Britain's lattice draw West Asia (GLACIER) company to invent with the steel plate, the spherical bronze powder of intermediate sintering, and the 3-layer composite material of sintering and rolling anti-friction wear-resistant plastics is laid on the surface, roll into the sleeve-like self oiling bearing then, so-called DU bearing.This bearing has that wear-resisting property is good, friction factor is little, low noise, the performance of coming across is good and the characteristics of selflubricating.Derive later three layers of composite bearing stainless steel-based, the copper base again.But, with upper bearing (metal) two weakness are arranged, the one, the anti-friction wear-resistant plastic layer is based on teflon and lead, can produce the leaded material after poisonous plumbous gas and the wearing and tearing during work, therefore in environmental protection fields such as food machinery, pharmaceuticals industry and office equipment, repelled; The 2nd, quality own is big, and anti-atmosphere, moisture and antirust, the anti-oxidation performance of steel is not good among the DU, and therefore in the very high field of lightweight requirements such as Aero-Space, its application has been subjected to restriction.
As everyone knows, the light specific gravity of aluminum alloy only is 2.7g/mm
3It is very easily oxidation and form the ultimate attainment close and stable aluminum oxide film of one deck in atmosphere, therefore can effectively completely cut off aluminium and oxygen, water, oily direct the contact.In addition, though unleaded spherical bronze powder has market supply, it also is not to be nothing the matter that but the anti-friction wear-resistant plastic layer will be accomplished unleaded, because antifriction and wear-resisting property can descend because of unleaded when not leaded, proportioning and the method for making of exploring friction reducing abrasion resistant material have become key problem in technology.In addition, the fusing point of aluminium alloy plate is 660 ℃, and the fusing point of bronze powder is up to more than 900 ℃, so the technology of bronze powder and aluminium alloy base plate sintering can't be implemented at all.
Summary of the invention
The objective of the invention is to seek the new product and the new preparation method of aluminium-radical three-layer composite self-lubricating bearing.It can keep the characteristics of prior art selflubricating, has again that quality is little, the advantage of no lead poisoning.
For achieving the above object, adopt aluminium alloy plate as substrate and new method for making, and traditional process route with sheet material manufacturing sleeve-like bearing, bearing shell, thrust washer or title thrust bearing.
It is as follows to disclose new technological scheme:
Aluminium-radical three-layer composite self-lubricating bearing is characterised in that bearing is a matrix by aluminium alloy plate, and bronze bisque of unleaded sphere and anti-friction wear-resistant plastic layer be combined into successively.
Said matrix is that thickness is 0.6~4.8 millimeter aluminium alloy plate, with thickness be that 0.10~0.15 millimeter the bronze bisque of unleaded sphere is molten state and combines;
The anti-friction wear-resistant plastic layer is mutual embedding state with combining of the bronze bisque of unleaded sphere, and the thickness of anti-friction wear-resistant layer on unleaded spherical bronze powder aspect is 0.02~0.07 millimeter.
The component of the surface layer anti-friction wear-resistant plastic layer of aluminium-radical three-layer composite self-lubricating bearing is by weight percentage:
In unleaded bronze powder, antimony powder, the glass putty one or more are 10~25 as metal filler;
One or more powders in graphite, molybdenum disulfide, the calcirm-fluoride or fiber 10~30 are as inorganic filler;
In polyarylsulfone (PAS), polyimide, poly-(2-hydroxybenzoyl), the polyphenylene sulfide one or more 10~25, as organic filler;
Surplus is a teflon.
The method for making of aluminium-radical three-layer composite self-lubricating bearing material is:
A, the aluminium base ball powder plate of preparation:
1. by required specification clip aluminium alloy plate body material,, clean at last and dry then with one surface sand hair or sand blast;
2. adopt hot-spraying technique that the unleaded spherical bronze powder of 100~140 purposes is sprayed on the matrix, the thickness of controlling the bronze bisque of unleaded sphere is 0.10~0.15 millimeter scope;
B, preparation anti-friction wear-resistant plastic layer material:
1. prepare burden and join teflon, metal filler, inorganic and organic filler powder or fiber material respectively by aforementioned weight percentage;
2. stir, powder except that teflon or fiber material are mixed stirring three times, each 5~10 minutes, become mixture, 2000~4000 rev/mins of stirrer rotating speeds sieve for three times, and sieve mesh is more than 60;
3. make emulsion, it is 60% emulsion that teflon is made solid content;
4. system can be sprawled software, and said mixture and emulsion are mixed, and stirs 5~10 minutes 15~25 ℃ of ambient temperatures in rotating speed is 20~60 rev/mins of stirrers;
C, system three-layer composite self-lubricating bearing material:
1. roll the shop, can sprawl software shop and roll on ball powder plate, makes its part rolling in the space of unleaded spherical bronze powder, is mutual chimeric status, becomes the anti-friction wear-resistant plastic layer, and this layer exceeds 0.06~0.10 millimeter on copper powder layer this moment;
2. oven dry under 220~280 ℃ of temperature, was dried by the fire 20~30 minutes, evaporated fully with moisture content in the emulsion to be as the criterion;
3. sintering, the sintering in the nitrogen protective sintering stove, 370~380 ℃ of sintering temperatures, 36~45 minutes time, nitrogen gas purity is more than 99.9%, and flow is decided according to different sintering furnaces, not to be oxidized to minimum discharge;
4. finish to gauge is rolled to the thickness of finished product sheet material with the sheet material behind the sintering, and amount of rolling is more than 0.01 millimeter, and the anti-friction wear-resistant plastic layer is 0.02~0.07 millimeter on this moment copper powder layer.
According to the bearing that process route of the present invention is made, comprise sleeve-like bearing, bearing shell and thrust bearing, can also make the friction part bit architecture part of forming shape and slide plate one class.Its main pattern bearing be with after the sheet material punching length of run with mould roll, shaping and machinery processes.The internal diameter of bearing is Φ 5mm to Φ 150mm; Wall thickness is 0.75mm to 5.0mm; Width is 5mm to 200mm; Bearing has a technology open seam with parallel axes.This bearing not only has all application characteristics of DU bearing, can be applicable to various machineries revolution, wave or to-and-fro motion for example automobile, motorcycle, textile manufacturing machine, hydraulic element, press, fitness equipments; Have more light weight, unleaded evil and water-fast, gas, antirust, anti-oxidation advantage, be specially adapted to aerospace field, and the hygienic environment-protecting industry of having relatively high expectations, for example Food ﹠ Drink machinery, pharmaceutical machine, household electric appliance, gymnastic apparatus, office equipment, comprise occasions such as car door hinge and seat.
Description of drawings
Fig. 1 is the generalized section of sleeve-like bearing of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is a bearing shell generalized section of the present invention.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is that thrust bearing of the present invention is the generalized section of thrust washer.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the structure figure of the axial section of Fig. 1, shows the bonding state of spherical bronze powder and aluminium alloy base plate; Also shown friction reducing abrasion resistant material and spherical bronze powder chimeric state mutually.
In Fig. 1-7: 1, matrix 2, the bronze bisque 3 of unleaded sphere, anti-friction wear-resistant plastic layer 4, technology open seam.
Fig. 8 is the technological process block diagram of example with the rolling bearing.The operation of bearing shell and thrust washer is identical with corresponding tratitional technology after making the three-layer composite board material.
Embodiment
Aluminium-radical three-layer composite self-lubricating bearing is a matrix 1 by aluminium alloy plate, and bronze bisque 2 of unleaded sphere and anti-friction wear-resistant plastic layer 3 be combined into successively.
A, said matrix 1 be for the thickness of aluminium alloy plate is 0.6~4.8 millimeter, with thickness be that 0.10~0.15 millimeter the bronze bisque 2 of unleaded sphere is molten state and combines;
B, anti-friction wear-resistant plastic layer 3 are mutual embedding state with combining of the bronze bisque 2 of unleaded sphere, and the thickness of anti-friction wear-resistant plastic layer 3 on 2 of bronze bisques of unleaded sphere is 0.02~0.07 millimeter.
The component of the anti-friction wear-resistant plastic layer 3 of aluminium-radical three-layer composite self-lubricating bearing is by weight percentage:
In A, unleaded bronze powder, antimony powder, the glass putty one or more are 10~25 as metal filler;
One or more powders in B, graphite, molybdenum disulfide, the calcirm-fluoride or fiber 10~30 are as inorganic filler;
In C, polyarylsulfone (PAS), polyimide, poly-(2-hydroxybenzoyl), the polyphenylene sulfide one or more 10~25, as organic filler;
D, surplus are teflon.
The method for making of aluminium-radical three-layer composite self-lubricating bearing material:
A, the aluminium base ball powder plate of preparation:
1. by required specification clip aluminium alloy plate,, clean at last and dry then with one surface sand hair or sand blast;
2. adopt hot-spraying technique that the unleaded spherical bronze powder of 100~140 purposes is sprayed on the matrix, the thickness of controlling the bronze bisque 2 of unleaded sphere is 0.10~0.15 millimeter scope;
B, preparation anti-friction wear-resistant plastic layer material:
1. prepare burden and join teflon, metal filler, inorganic and organic filler powder or fiber material respectively by aforementioned weight percentage;
2. stir, powder except that teflon or fiber material are mixed stirring three times, each 5~10 minutes, become mixture, 2000~4000 rev/mins of stirrer rotating speeds sieve for three times, and sieve mesh is more than 60;
3. make emulsion, it is 60% emulsion that teflon is made solid content;
4. system can be sprawled software, and said mixture and emulsion are mixed, and stirs 5~10 minutes 15~25 ℃ of ambient temperatures in rotating speed is 20~60 rev/mins of stirrers;
C, system three-layer composite self-lubricating bearing material:
1. roll the shop, can sprawl software shop and roll on ball powder plate, makes its part rolling in the space of unleaded spherical bronze powder, is mutual chimeric status, becomes anti-friction wear-resistant plastic layer 3, and this layer exceeds 0.06~0.10 millimeter of copper powder layer 2 this moment;
2. oven dry under 220~280 ℃ of temperature, was dried by the fire 20~30 minutes, evaporated fully with moisture content in the emulsion to be as the criterion;
3. sintering, the sintering in the nitrogen protective sintering stove, 370~380 ℃ of sintering temperatures, 36~45 minutes time, nitrogen gas purity is more than 99.9%, and flow is decided according to different sintering furnaces, not to be oxidized to minimum discharge;
4. finish to gauge is rolled to the thickness of finished product sheet material with the sheet material behind the sintering, and amount of rolling is more than 0.01 millimeter, and the anti-friction wear-resistant plastic layer is 0.02~0.07 millimeter on this moment copper powder layer.
Aluminium-radical three-layer composite self-lubricating bearing in the method for making of three-layer composite self-lubricating bearing material, rolls operation in can increasing between oven dry and sintering two-step, amount of rolling is 0.02~0.04 millimeter.
The main performance index of aluminium-radical three-layer composite self-lubricating bearing is decided by the material composition and the proportioning of anti-friction wear-resistant plastic layer, and the concrete manufacturing process and the traditional product technology of product are roughly the same.Illustrate material prescription now:
According to such material component, make specification at last and be the sliding bearing sample of external diameter * internal diameter * highly=Φ 39 * Φ 35 * 20, on the MPV-20 friction wear testing machine, test, working condition: unlubricated, given speed 0.5m/s, load step by step, test limit time 2 hours, test result sees the following form.
Limit PV test comparable situation table
The sample sequence number | PV limiting value N/mm 2·m/s | Friction factor | Wear extent mm | |
Embodiment | ||||
1 | 3.95 | 0.08 | 0.025 | 92 |
| 2.85 | 0.14 | 0.045 | 135 |
| 3.71 | 0.07 | 0.022 | 85 |
From above test data as seen, though plastic layer component difference, embodiment 1 and embodiment 3 have reached in the world that DU product P V limiting value is 3.6N/mm
2More than the requirement of m/s; Embodiment 2 PV value is low slightly; Three embodiments' friction factor is all below 0.2, and is more satisfactory.Wear extent index embodiment 2 is poor slightly to be 0.045mm, all the other two all below 0.03mm, more satisfactory.Two embodiment's temperature are below 120 ℃, and embodiment's 2 temperature are tested and ended above 120 ℃.
More than three embodiments generally still good, wherein embodiment 2 can do further screening and exploration on material component.The present invention has possessed friction and wear behavior and the DU bearing is similar in sum, and has more the good characteristic of lightweight, corrosion-resistant and environmental protection, and this product expection has broad prospect for its application, brings benefit to the mankind.
Claims (6)
1, a kind of aluminium-radical three-layer composite self-lubricating bearing is characterized in that bearing is matrix (1), the bronze bisque of unleaded sphere (2) and anti-friction wear-resistant plastic layer (a 3) be combined into successively by aluminium alloy plate:
A, said matrix (1) are that thickness is 0.6~4.8 millimeter aluminium alloy plate, with thickness be that 0.10~0.15 millimeter the bronze bisque of unleaded sphere (2) is molten state and combines;
B, anti-friction wear-resistant plastic layer (3) are mutual embedding state with combining of the bronze bisque of unleaded sphere (2), and the thickness of anti-friction wear-resistant plastic layer (3) on the bronze bisque of unleaded sphere (2) face is 0.02~0.07 millimeter.
2, aluminium-radical three-layer composite self-lubricating bearing as claimed in claim 1 is characterized in that the component of anti-friction wear-resistant plastic layer (3) being by weight percentage:
In A, unleaded bronze powder, antimony powder, the glass putty one or more are 10~25 as metal filler;
One or more powders in B, graphite, molybdenum disulfide, the calcirm-fluoride or fiber 10~30 are as inorganic filler;
In C, polyarylsulfone (PAS), polyimide, poly-(2-hydroxybenzoyl), the polyphenylene sulfide one or more 10~25, as organic filler;
D, surplus are teflon.
3, aluminium-radical three-layer composite self-lubricating bearing as claimed in claim 1 or 2 is characterized in that the method for making of aluminium-radical three-layer composite self-lubricating bearing material:
A, the aluminium base ball powder plate of preparation:
1. by required specification clip aluminium alloy plate matrix (1),, clean at last and dry then with one surface sand hair or sand blast;
2. adopt hot-spraying technique that the unleaded spherical bronze powder of 100~140 purposes is sprayed on the matrix (1), the thickness of controlling the bronze bisque of unleaded sphere (2) is 0.10~0.15 millimeter scope;
B, preparation anti-friction wear-resistant plastic layer material:
1. batching is joined teflon, metal filler, inorganic and organic filler powder or fiber material respectively by aforementioned weight percentage;
2. stir, powder except that teflon or fiber material are mixed stirring three times, each 5~10 minutes, become mixture, 2000~4000 rev/mins of stirrer rotating speeds sieve for three times, and sieve mesh is more than 60;
3. make emulsion, it is 60% emulsion that teflon is made solid content;
4. system can be sprawled software, and said mixture and emulsion are mixed, and stirs 5~10 minutes 15~25 ℃ of ambient temperatures in rotating speed is 20~60 rev/mins of stirrers;
C, system three-layer composite self-lubricating bearing material:
1. roll the shop, can sprawl software shop and roll on ball powder plate, makes its part rolling in the space of unleaded spherical bronze powder, is mutual chimeric status, becomes the anti-friction wear-resistant plastic layer, and this layer exceeds 0.06~0.10 millimeter on copper powder layer this moment;
2. oven dry under 220~280 ℃ of temperature, was dried by the fire 20~30 minutes, evaporated fully with moisture content in the emulsion to be as the criterion;
3. sintering, the sintering in the nitrogen protective sintering stove, 370~380 ℃ of sintering temperatures, 36~45 minutes time, nitrogen gas purity is more than 99.9%, and flow is decided according to different sintering furnaces, not to be oxidized to minimum discharge;
4. finish to gauge is rolled to the thickness of finished product sheet material with the sheet material behind the sintering, and amount of rolling is more than 0.01 millimeter, and the anti-friction wear-resistant plastic layer is 0.02~0.07 millimeter on this moment copper powder layer.
4, aluminium-radical three-layer composite self-lubricating bearing as claimed in claim 3 is characterized in that in the method for making of three-layer composite self-lubricating bearing material, rolls operation in can increasing between oven dry and sintering two-step, and amount of rolling is 0.02~0.04 millimeter.
5, aluminium-radical three-layer composite self-lubricating bearing as claimed in claim 1 or 2, it is characterized in that shape has sleeve-like bearing, bearing shell and thrust bearing, can also make the friction part bit architecture part of forming shape such as slide plate one class, its main pattern bearing be with after the sheet material punching length of run with mould roll, shaping and machinery processes, the internal diameter of bearing is Φ 5mm to Φ 150mm; Wall thickness is 0.75mm to 5.0mm; Width is 5mm to 200mm; Bearing has a technology open seam (4) with parallel axes.
6, aluminium-radical three-layer composite self-lubricating bearing as claimed in claim 3, it is characterized in that shape has sleeve-like bearing, bearing shell and thrust bearing, can also make the friction part bit architecture part of forming shape such as slide plate one class, its main pattern bearing be with after the sheet material punching length of run with mould roll, shaping and machinery processes, the internal diameter of bearing is Φ 5mm to Φ 150mm; Wall thickness is 0.75mm to 5.0mm; Width is 5mm to 200mm; Bearing has a technology open seam (4) with parallel axes.
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