CN102966670B - Composite material bearing and manufacturing method thereof - Google Patents

Composite material bearing and manufacturing method thereof Download PDF

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Publication number
CN102966670B
CN102966670B CN201210487798.8A CN201210487798A CN102966670B CN 102966670 B CN102966670 B CN 102966670B CN 201210487798 A CN201210487798 A CN 201210487798A CN 102966670 B CN102966670 B CN 102966670B
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steel base
teflon
porous
bisque
thickness
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CN102966670A (en
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李云龙
刘长波
李夏
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Dalian Sanhuan Composite Material Technology Development Co., Ltd.
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DALIAN SANHUAN COMPOSITE MATERIAL TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

The invention provides a composite material bearing and a manufacturing method of the composite material bearing. The manufacturing method of the composite material bearing comprises the following steps of: A, processing a steel base body to enable the surface roughness of the steel base body to achieve within Ra 1.6; B, uniformly arranging spherical copper powder on the surface of the steel base body, sintering under reducibility or inert atmosphere, and forming a multi-hole copper powder layer; and C, die pressing polytetrafluoroethylene on the surface of the steel base body on which the multi-hole copper powder layer is formed under the temperature that the polytetrafluoroethylene is in the viscosity flow state, thus forming a polytetrafluoroethylene layer with the thickness being 0.1-1.5mm, and obtaining the composite material bearing. The thickness of the surface of the obtained composite material bearing through the manufacturing method provided by the invention is 0.1-1.5mm, the polytetrafluoroethylene layer has high manufacturing accuracy and uniform elasticity modulus under the premise of guaranteeing binding strength; and the whole performance of the composite material bearing is improved, the manufacturing cost is reduced, and the application field is expanded.

Description

A kind of composite bearing and manufacture method thereof
Technical field
The present invention relates to bearing mnanufacture field, in particular to a kind of composite bearing and manufacture method thereof.
Background technique
Teflon-base steel composite material is the 3-layer composite material be made up of steel plate, sintered copper bisque and surperficial polytetrafluoroethylene floor, its processing method is: first on steel plate, sinter one or more layers bronze powder, form porous mesosphere, then teflon is layed on copper powder layer and is rolled, sintering plasticizing forms composite board, then through finish rolling, blanking, roll, shaping, chamfering become composite bearing goods.
The laying method of polytetrafluoroethylene floor generally divides dry method and wet method two kinds.Dry method is that teflon resin powder (filling-modified teflon need carry out batch mixing) is directly layed in the method for porous sintered plate carrying out compound.And wet method adopts polytetrafluoroethyldispersion dispersion (filling-modified teflon need carry out batch mixing) to use alcohol breakdown of emulsion, furnishing starchiness, then uniform spreading is located on sintered plate, carries out the laying method of breaking down after oven dry.
Chinese patent ZL 90106439 discloses one and " fills the manufacture method of lead powder soft PTFE ribbon-metallic composite ", the method covers in the composite sheet of the copper powder-steel plate of sintering by filling lead powder modified Teflon raw meal belt, one reinstates mill milling, and then makes composite board through sintering plasticizing.
Composite board manufactured by said method, the thinner thickness (being generally only 0.02 ~ 0.10mm) of its surperficial polytetrafluoroethylplastic plastic layer.
Chinese patent ZL 98114436.5 discloses one " technology for manufacturing elastic metal-plastic thrust bearing ", polytetrafluoroethylplastic plastic layer and elastic metallic yarn pad are first carried out compound (compound total thickness is generally 8mm) by the method, and then combined by soldering from different steel tile bases, form four layers of composite material.Wherein the thickness of wire bed course is generally about 4mm, and the thickness of surperficial polytetrafluoroethylene floor is generally 1.5 ~ 2.5mm, and all the other are the thickness of the part that wire bed course and polytetrafluoroethylene floor embed mutually.
The teflon layer thickness of above-mentioned two kinds of composite materials, or very thin (0.02 ~ 0.10mm), or very thick (1.5 ~ 2.5mm).To be formed in certain thickness in the middle of this, the processing method of above two kinds of products is all not suitable for, and reason is:
If adopt above-mentioned dry method, wet method or polytetrafluoroethylraw raw material band complex method, because the thermal distortion of polytetrafluoroethylplastic plastic is large, in sintering plasticizing process, the deformation force of thicker polytetrafluoroethylene floor will exceed the combination force of itself and Porous Cu bisque, and result easily causes polytetrafluoroethylene floor to come off.
If adopt the manufacture method of elastic metal-plastic, teflon layer thickness is generally 1.5 ~ 2.5mm, and by the impact of manufacture method, the controllability extreme difference of precision, error just reaches 1mm.Although its reason is that limited location block carries out spacing when pressed metal silk pad, but wire spreading is manual, density has nonuniformity, in addition on whole area, the elasticity of each point wire spiral spring also can be variant, therefore the springback capacity after compacting also can be variant, spreading teflon resin powder in this case, will cause spreading Density inhomogeneity, causes the polytetrafluoroethylene floor thickness deviation that obtains large.If make the polytetrafluoroethylene floor of lower thickness, individual sites may have copper wire exposing surface, and this is unallowed for bearing.
Therefore, in the prior art, due to the polytetrafluoroethylene floor of above-mentioned intermediate gauge can not be made, the application area of the rub resistance lost material of this excellence of teflon is thus limited.
Summary of the invention
The invention provides a kind of composite bearing and manufacture method thereof, be not suitable for the processing method solving prior art the polytetrafluoroethylene floor making intermediate gauge, cause the problem that teflon-base steel composite material bearing application area is restricted.
According to an aspect of the present invention, provide a kind of manufacture method of composite bearing, comprise the following steps: A, process steel base, within making its surface roughness reach Ra1.6; B, spherical copper powder is set at steel base surface uniform, and sinters under reducibility or inert atmosphere, form Porous Cu bisque; C, be in viscosity flow state at teflon temperature under, be formed with the steel base surface mold pressing teflon of Porous Cu bisque, obtained thickness is the polytetrafluoroethylene floor of 0.1 ~ 1.5mm, obtains composite bearing.
Further, step C comprises: the steel base being formed with Porous Cu bisque heated; When the surface temperature of steel base reach teflon be in the temperature of viscosity flow state time, be that the polytetrafluoroethylsheet sheet of 0.4 ~ 1.8mm is placed in steel base by the thickness made in advance, spacing pressurization carried out to polytetrafluoroethylsheet sheet, obtains composite bearing.
Further, step C comprises: the steel base being formed with Porous Cu bisque is heated to 400 ~ 450 DEG C in oven, and constant temperature more than 0.5 hour is placed on the lower loose tool of mould after taking-up; Detect the surface temperature of steel base, when surface temperature is down to 327 ~ 380 DEG C, steel base places polytetrafluoroethylsheet sheet, use the upper loose tool of mould to carry out spacing pressurization to polytetrafluoroethylsheet sheet, obtained polytetrafluoroethylene floor.
Further, the making method of polytetrafluoroethylsheet sheet comprises: compacting: by teflon resin powder or the filling-modified teflon resin powder after batch mixing compressing under 30 ~ 50MPa, the thickness of compacting is 0.4 ~ 1.8mm; Sintering: sintered at 360 ~ 390 DEG C by compressing material, cutting out according to the bearing size for being formed, obtaining polytetrafluoroethylsheet sheet.
Further, the material of spherical copper powder is the spherical tin bronze of QSn8-3, and fineness is 20 ~ 60 orders.
Further, the sintering atmosphere in step B is nitrogen and hydrogen mixed gas atmosphere, and in described mixed atmosphere, the volume ratio of nitrogen and hydrogen is 1:3.
According to another aspect of the present invention, provide a kind of composite bearing, comprise steel base, Porous Cu bisque and polytetrafluoroethylene floor, this composite bearing adopts above-mentioned manufacture method manufacture to form.
The composite bearing of application technical solution of the present invention and manufacture method thereof, on the one hand because the Porous Cu bisque of spherical copper powder sintering includes much small up-narrow and down-wide wedge-shaped structure, in the process of mold pressing teflon subsequently, teflon infiltrates the following certain depth in surface of the small wedge-shaped structure of Porous Cu bisque, makes polytetrafluoroethylene floor and steel tile base form firmly mechanical interlock; On the other hand due to be in viscosity flow state at teflon temperature under mold pressing is carried out to teflon, teflon viscosity when viscosity flow state is very high, compacting combines the effect of chemical adhesion of further defining in this case, and the thickness thus obtained is that the overall tear strength of the polytetrafluoroethylene floor of 0.1 ~ 1.5mm and binding strength are very high; And, the polytetrafluoroethylene floor on the composite bearing surface using manufacture method of the present invention to obtain has higher accuracy of manufacturing and more uniform Young's modulus, improve the overall performance of composite bearing, not only reduce cost of production, and extend application.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows according to the structural representation being formed with the steel base of Porous Cu bisque of the present invention; And
Fig. 2 shows according to the structural representation comprising the composite bearing of steel base, Porous Cu bisque and polytetrafluoroethylene floor of the present invention.
Embodiment
Below in conjunction with the embodiment of the present invention, technological scheme of the present invention is described in detail, but following embodiment understands the present invention, and the present invention can not be limited, embodiment in the present invention and the feature in embodiment can combine mutually, and the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
In a kind of typical mode of execution of the present invention, as depicted in figs. 1 and 2, the manufacture method comprising the composite bearing of steel base 1, Porous Cu bisque 2 and polytetrafluoroethylene floor 3 comprises the following steps: A, process steel base 1, within making its surface roughness reach Ra1.6; B, spherical copper powder is set at steel base 1 surface uniform, and sinters under inertia or reducing atmosphere, form Porous Cu bisque 2; C, be in viscosity flow state at teflon temperature under, at the surperficial mold pressing teflon of the steel base 1 being formed with Porous Cu bisque 2, obtained thickness is the polytetrafluoroethylene floor 3 of 0.1 ~ 1.5mm, obtains composite bearing.
The thickness of the composite bearing that embodiment of the present invention manufacture obtains is that the binding strength of the polytetrafluoroethylene floor 3 of 0.1 ~ 1.5mm is high, reason is: on the one hand, the porous structure of the Porous Cu bisque 2 sintered by spherical copper powder includes much small up-narrow and down-wide wedge-shaped structure, as shown in Figure 1, in the process of mold pressing teflon subsequently, teflon infiltrates the following certain depth in surface of the small wedge-shaped structure of Porous Cu bisque 2, polytetrafluoroethylene floor 3 and steel tile base 1 is made to form firmly mechanical interlock, as shown in Figure 2; On the other hand, be in the temperature of viscosity flow state at teflon under, mold pressing is carried out to teflon, because teflon is in viscosity flow state, viscosity is very high, compacting combines in this case has not been simple mechanical interlock, also comprise the effect of chemical adhesion, thus overall tear strength and binding strength are very high.
The thickness of the composite bearing that embodiment of the present invention manufacture obtains is the surface thickness uniformity of the polytetrafluoroethylene floor 3 of 0.1 ~ 1.5mm, higher accuracy of manufacturing can be reached, thus there is more uniform Young's modulus, improve the overall performance of composite bearing.
In addition, the thickness of the polytetrafluoroethylene floor 3 of the composite bearing that embodiment of the present invention manufacture obtains is 0.1 ~ 1.5mm, this thickness is greater than the teflon layer thickness (0.02 ~ 0.10mm) that the dry method of prior art, wet method or the manufacture of polytetrafluoroethylraw raw material band complex method obtain, be less than again the teflon thickness (1.5 ~ 2.5mm) of the elastic metal-plastics bearing of prior art, under the prerequisite of binding strength ensureing composite bearing, not only reduce cost of production, and extend the application of composite bearing.
In the preferred embodiment of the present invention, step C comprises: the steel base being formed with Porous Cu bisque heated; When the surface temperature of steel base reach teflon be in the temperature of viscosity flow state time, be that the polytetrafluoroethylsheet sheet of 0.4 ~ 1.8mm is placed in steel base by the thickness made in advance, spacing pressurization carried out to polytetrafluoroethylsheet sheet, obtains composite bearing.Teflon is made into the polytetrafluoroethylsheet sheet that thickness is 0.4 ~ 1.8mm in advance, and then polytetrafluoroethylsheet sheet is carried out spacing pressurization on steel base 1 surface, polytetrafluoroethylsheet sheet volume is compressed, and some teflon infiltrates the Porous Cu bisque 2 on steel base 1 surface, obtains the polytetrafluoroethylene floor 3 that thickness is 0.1 ~ 1.5mm.Adopt and make polytetrafluoroethylene floor 3 in this way, can ensure that polytetrafluoroethylene floor 3 has uniform Young's modulus and higher accuracy of manufacturing.
In the preferred embodiment of the present invention, step C comprises: the steel base 1 being formed with Porous Cu bisque 2 is heated to 400 ~ 450 DEG C in oven, and constant temperature more than 0.5 hour is placed on the lower loose tool of mould after taking-up; Detect the surface temperature of steel base 1, when surface temperature is down to 327 ~ 380 DEG C, steel base 1 places polytetrafluoroethylsheet sheet, use the upper loose tool of mould to carry out spacing pressurization to polytetrafluoroethylsheet sheet, obtained polytetrafluoroethylene floor 3.Adopt and first the steel base 1 being formed with Porous Cu bisque 2 is heated in oven a higher temperature 400 ~ 450 DEG C and the constant temperature heat treatment step of more than 0.5 hour, when can ensure to use loose tool to carry out spacing pressurization with the lower fetal membrane pair polytetrafluoroethylsheet sheet contacted with steel base 1 at 327 ~ 380 DEG C of temperature being in viscosity flow state, steel base 1 itself has enough heats can pass to teflon, teflon is reached in mold process and keeps viscosity flow state, thus make polytetrafluoroethylene floor 3 on the basis of mechanical interlock, form firmly chemical adhesion with the Porous Cu bisque 2 on steel base 1 surface.
In the preferred embodiment of the present invention, the making method of polytetrafluoroethylsheet sheet comprises: compacting: by teflon resin powder or the filling-modified teflon resin powder after batch mixing compressing under 30 ~ 50MPa, the thickness of compacting is 0.4 ~ 1.8mm; Sintering: sintered at 360 ~ 390 DEG C by compressing material, cutting out according to the bearing size for being formed, obtaining polytetrafluoroethylsheet sheet.The polytetrafluoroethylsheet sheet thickness uniformity obtained by said method, there is uniform Young's modulus and higher accuracy of manufacturing, directly can be formed with the surperficial mold pressing of steel base 1 of Porous Cu bisque 2, mold pressing rear section teflon infiltrates in the small wedge-shaped structure of Porous Cu bisque 2, form mechanical interlock and chemical adhesion effect, thus obtained thickness is the polytetrafluoroethylene floor 3 of 0.1 ~ 1.5mm.
In the mode of execution that the present invention is concrete, teflon resin powder can be through filling-modified teflon resin powder, the filling-modified teflon resin powder that such as proportioning is polyphenyl fat 20 ~ 30wt%, aramid fibre 1 ~ 4wt%, teflon is surplus, or proportioning is the filling-modified teflon resin powder of polyphenyl fat 20 ~ 30wt%, teflon 70 ~ 80wt%, in this case, before carrying out above-mentioned pressing step, also comprise the step of batch mixing.
In the preferred embodiment of the present invention, the material of spherical copper powder is the spherical tin bronze of QSn8-3, and fineness is 20 ~ 60 orders.The spherical tin bronze of QSn8-3 has larger rigidity, not yielding after sintering yet, can be formed on steel base 1 surface and include much up-narrow and down-wide small obcuneate porous structure, thus form good mechanical interlock and chemical adhesion with polytetrafluoroethylene floor 3 after molding.Certainly, in the mode of execution that other is concrete, also can adopt the spherical copper powder of other material to sinter and form spherical copper powder layer, as long as spherical copper powder used has enough rigidity, not yielding after making sintering, can be formed on steel base 1 surface and include much up-narrow and down-wide small obcuneate porous structure.
In the preferred embodiment of the present invention, in step B, sintering forms the atmosphere of Porous Cu bisque 2 is nitrogen and hydrogen mixed gas atmosphere, and wherein, the volume ratio of nitrogen and hydrogen is 1:3.Adopt this sintering atmosphere, in sintering process, can protect spherical copper powder that oxidation or other chemical reactions do not occur preferably, ensure the formation of porous structure, and this atmosphere directly can pass through NH 3thermolysis obtains, and cost is lower.
In a kind of typical mode of execution of the present invention, composite bearing comprises steel base 1, Porous Cu bisque 2 and polytetrafluoroethylene floor 3, this composite bearing adopts above-mentioned manufacture method manufacture to form, there is the polytetrafluoroethylene floor of 0.1 ~ 1.5mm, under the prerequisite ensureing binding strength, not only reduce cost of production, and extend the application of composite bearing.
Beneficial effect of the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
By planar steel base surface by grinding, within making its surface roughness reach Ra1.6; Steel base is carried out surface degreasing, processing of rust removing; the spherical tin bronze powder of even spreading one deck 20 ~ 60 object QSn8-3; then be placed on be connected with nitrogen that volume ratio is 1:3 and hydrogen hybrid protection gas high temperature sintering furnace in sinter, obtain Porous Cu bisque.
Teflon resin powder is compressing under 50MPa, and the thickness of compacting is 0.4mm; Compressing material is sintered at 375 DEG C, constant temperature 1 hour, and cut out by the length of design bearing pattern requirement and width, obtained polytetrafluoroethylsheet sheet.
The steel base being formed with above-mentioned Porous Cu bisque is heated to 400 DEG C in oven, constant temperature 1 hour, be placed on the flat board (lower loose tool) of the worktable of press machine after taking-up, detect its surface temperature when being down within the scope of 327 DEG C ~ 380 DEG C, above-mentioned polytetrafluoroethylsheet sheet is placed on it, press machine is descending by loose tool compacting in planar, in pressing process, limiting stopper is set, when teflon layer thickness reaches 0.1 ~ 0.2mm, pressurize 1 minute, to prune with scissors the redundance of polytetrafluoroethylene floor, through further grinding, the finished product of composite bearing is processed into according to the requirement of design bearing pattern.
Embodiment 2
By semi-circular cylindrical steel base surface by grinding, within making its surface roughness reach Ra1.6; Steel base is carried out surface degreasing, processing of rust removing; the spherical tin bronze powder of even spreading one deck 20 ~ 60 object QSn8-3; then be placed on be connected with nitrogen that volume ratio is 1:3 and hydrogen hybrid protection gas high temperature sintering furnace in sinter, obtain Porous Cu bisque.
The polyphenyl fat of 20wt%, the teflon of 80wt% are carried out batch mixing, obtained filling-modified teflon resin powder; Filling-modified teflon resin powder is compressing under 50MPa, and the thickness of compacting is 1.8mm; Compressing material is sintered at 390 DEG C, constant temperature 1 hour, and cut out by the length of design bearing pattern requirement and width, obtained polytetrafluoroethylsheet sheet.
The steel base being formed with above-mentioned Porous Cu bisque is heated to 450 DEG C in oven, constant temperature 1 hour, be placed on the die (lower loose tool) of the worktable of press machine after taking-up, detect its surface temperature when being down within the scope of 327 DEG C ~ 380 DEG C, above-mentioned polytetrafluoroethylsheet sheet is placed on it, press machine is descending by punch (upper loose tool) compacting, in pressing process, limiting stopper is set, when teflon layer thickness reaches 1.4 ~ 1.5mm, pressurize 1 minute, to prune with scissors the redundance of polytetrafluoroethylene floor, through further grinding, the finished product of composite bearing is processed into according to the requirement of design bearing pattern.
Embodiment 3
By 1/3rd cylinder-shaped steel matrix surfaces by grinding, within making its surface roughness reach Ra1.6; Steel base is carried out surface degreasing, processing of rust removing, the spherical tin bronze powder of even spreading one deck 20 ~ 60 object QSn10-10, be then placed on to be connected with in high temperature sintering furnace that purity is the hydrogen of more than 99.9% and sinter, obtain Porous Cu bisque.
The aramid fibre of the polyphenyl fat of 30wt%, 1wt%, the teflon of 69wt% are carried out batch mixing, obtained filling-modified teflon resin powder; Filling-modified teflon resin powder is compressing under 30MPa, and the thickness of compacting is 1.5mm; Compressing material is sintered at 360 DEG C, constant temperature 1 hour, and cut out by the length of design bearing pattern requirement and width, obtained polytetrafluoroethylsheet sheet.
The steel base being formed with above-mentioned Porous Cu bisque is heated to 420 DEG C in oven, constant temperature 0.5 hour, be placed on the die (lower loose tool) of the worktable of press machine after taking-up, detect its surface temperature when being down within the scope of 327 DEG C ~ 380 DEG C, above-mentioned polytetrafluoroethylsheet sheet is placed on it, press machine is descending by punch (upper loose tool) compacting, in pressing process, limiting stopper is set, when teflon layer thickness reaches 1.2 ~ 1.3mm, pressurize 1 minute, to prune with scissors the redundance of polytetrafluoroethylene floor, through further grinding, the finished product of composite bearing is processed into according to the requirement of design bearing pattern.
Comparative example 1
Adopt Chinese patent ZL 90106439 disclosed " filling the manufacture method of lead powder soft PTFE ribbon-metallic composite " to manufacture and obtain composite board, the thickness of its surperficial polytetrafluoroethylene floor is 0.10mm.
Comparative example 2
Adopt Chinese patent ZL 98114436.5 disclosed " technology for manufacturing elastic metal-plastic thrust bearing " to manufacture and obtain metallo-plastic composite bearing, the thickness of its surperficial polytetrafluoroethylene floor is 2.5mm.
The composite bearing obtain embodiment 1 ~ 3 and comparative example 1 ~ 2 manufacture or sheet material carry out the test of abrasion-resistant polishing machine, polytetrafluoroethylene floor binding strength, surface uniformity and Young's modulus, and result is as shown in table 1:
Table 1
Friction factor Wear scar width Peeling strength Surface thickness uniformity Young's modulus uniformity
Embodiment 1 0.08~0.18 ≤6.0mm ≥400N/cm 0.15~0.20mm 8.0~8.3GPa
Embodiment 2 0.12~015 ≤30mm ≥400N/cm 1.40~1.45mm 2.4~2.7GPa
Embodiment 3 0.07~0.10 ≤3.3mm ≥400N/cm 1.25~1.30mm 3.2~3.5GPa
Comparative example 1 0.08~0.18 ≤60mm ≥30N/cm 0.02~0.10mm 8.8~9.1GPa
Comparative example 2 0.07~0.10 ≤3.0mm ≥1000N/cm 1.50~2.50mm 1.9~2.4GPa
From the test result of table 1, the composite bearing that the embodiment of the present invention 1 ~ 3 manufacture obtains, compared with manufacturing with comparative example 1 ~ 2 composite bearing or sheet material that obtain, larger than the binding strength of comparative example 1 polytetrafluoroethylene floor, than the surface uniformity of comparative example 1,2 and Young's modulus uniformity better, and also maintain low friction, higher abrasion resistance properties simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a manufacture method for composite bearing, is characterized in that, comprises the following steps:
A, process steel base (1), within making its surface roughness reach Ra1.6;
B, spherical copper powder is set at described steel base (1) surface uniform, and sinters under reducibility or inert atmosphere, form Porous Cu bisque (2);
C, be in viscosity flow state at teflon temperature under, be formed with the surperficial mold pressing teflon of steel base (1) of described Porous Cu bisque (2), obtained thickness is the polytetrafluoroethylene floor (3) of 0.1 ~ 1.5mm, obtains described composite bearing;
Described step C comprises:
The steel base (1) being formed with described Porous Cu bisque (2) is heated to 400 ~ 450 DEG C in oven, constant temperature more than 0.5 hour, is placed on the lower loose tool of mould after taking-up;
Detect the surface temperature of described steel base (1), when described surface temperature is down to 327 ~ 380 DEG C, the thickness made in advance in the upper placement of described steel base (1) is the polytetrafluoroethylsheet sheet of 0.4 ~ 1.8mm, the upper loose tool of described mould is used to carry out spacing pressurization to described polytetrafluoroethylsheet sheet, obtained described polytetrafluoroethylene floor (3).
2. manufacture method according to claim 1, is characterized in that, the making method of described polytetrafluoroethylsheet sheet comprises:
Compacting: by teflon resin powder or the filling-modified teflon resin powder after batch mixing compressing under 30 ~ 50MPa, the thickness of compacting is 0.4 ~ 1.8mm;
Sintering: sintered at 360 ~ 390 DEG C by described compressing material, cutting out according to the bearing size for being formed, obtaining described polytetrafluoroethylsheet sheet.
3. manufacture method according to claim 1, is characterized in that, the material of described spherical copper powder is the spherical tin bronze of QSn8-3, and fineness is 20 ~ 60 orders.
4. manufacture method according to claim 1, is characterized in that, the sintering atmosphere in described step B is nitrogen and hydrogen mixed gas atmosphere, and in described mixed atmosphere, the volume ratio of nitrogen and hydrogen is 1:3.
5. a composite bearing, comprises steel base (1), Porous Cu bisque (2) and polytetrafluoroethylene floor (3), it is characterized in that, adopts the manufacture method manufacture according to any one of Claims 1-4 to form.
CN201210487798.8A 2012-11-26 2012-11-26 Composite material bearing and manufacturing method thereof Active CN102966670B (en)

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CN104061242A (en) * 2014-05-18 2014-09-24 金迪荣 Multi-layered composite wear resistant balancing bearing and manufacturing technique thereof
CN105020267B (en) * 2015-08-10 2017-09-19 大连三环复合材料技术开发股份有限公司 Core main pump water lubrication composite material thrust bearing
CN114043741A (en) * 2021-11-17 2022-02-15 江苏立一新材料科技有限公司 Processing method of composite material for sliding bearing

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CN101126418A (en) * 2007-09-11 2008-02-20 嘉兴中达自润轴承工业有限公司 Polymer self-lubricating thin layer composite axle sleeve and its preparation method
CN201065888Y (en) * 2007-07-24 2008-05-28 人本集团有限公司 Teflon engineered plastic sliding bearing
CN101672325A (en) * 2009-10-09 2010-03-17 浙江长盛滑动轴承有限公司 PEEK film-covered high performance sliding bearing and manufacturing method thereof

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Publication number Priority date Publication date Assignee Title
US4732818A (en) * 1984-04-30 1988-03-22 Federal-Mogul Corporation Composite bearing material with polymer filled metal matrix interlayer of distinct metal particle sizes and method of making same
CN201065888Y (en) * 2007-07-24 2008-05-28 人本集团有限公司 Teflon engineered plastic sliding bearing
CN101126418A (en) * 2007-09-11 2008-02-20 嘉兴中达自润轴承工业有限公司 Polymer self-lubricating thin layer composite axle sleeve and its preparation method
CN101672325A (en) * 2009-10-09 2010-03-17 浙江长盛滑动轴承有限公司 PEEK film-covered high performance sliding bearing and manufacturing method thereof

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