CN102588445B - A kind of making method of rolling bearing of mixture lubrication and rolling bearing - Google Patents
A kind of making method of rolling bearing of mixture lubrication and rolling bearing Download PDFInfo
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- CN102588445B CN102588445B CN201210047675.2A CN201210047675A CN102588445B CN 102588445 B CN102588445 B CN 102588445B CN 201210047675 A CN201210047675 A CN 201210047675A CN 102588445 B CN102588445 B CN 102588445B
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Abstract
The invention provides making method and the rolling bearing of the rolling bearing that a kind of mixture that is oily with polyethers and solid lubricant is oiling agent.Making method of the present invention is with comprising the mixture of polyethers oil and solid lubricant micro mist as oiling agent injection bearing inner chamber, and refractory seal bearing made by punching press dust cover.Bearing, when the oxidative cleavage temperature work lower than polyethers oil, forms fluid film lubrication; When the oxidative cleavage temperature work higher than polyethers oil, the volatilization of polyethers oil, turns to solid film lubricating from fluid film lubrication.Compared with prior art, it is high and at high temperature tie the problem of carbon that the present invention had both overcome PFPE high temperature grease price, also overcome the problem that must adopt solid lubricant at the very start, bearing can initiatively realize the transformation of fluid lubrication to solid lubrication according to running temperature, fluid lubrication and solid lubrication sharpest edges are separately given full play to, improve operational reliability and the life-span of bearing, be applicable to various hot environment.<b/>
Description
Technical field
The present invention relates to the technical field of extraordinary rolling bearing, particularly a kind of with the making method of polyethers oil and the mixture of the solid lubricant rolling bearing that is oiling agent and rolling bearing.
Background technique
The rolling bearing worked under hot environment, the selection of oiling agent is directly connected to bearing operational reliability at high temperature and service life, therefore most important.The main fluid film that adopts lubricates and solid film lubricating two kinds of lubricating systems at present, is described respectively below and points out its limitation existed and deficiency:
1, fluid film lubrication: the high temperature resistant lubricating grease selecting oil based on PFPE (also known as perfluoroalkyl polyethers, PFPE or PFAE), is generally crowded into lubricating grease by polytetrafluoroethylene (PTFE).PFPE has very strong chemical inertness, temperature-resistance characteristic, and teflon does not have dropping point.Therefore, the lubricating grease synthesized by PFPE and teflon, up at the temperature of 260 degree, still has certain life-span.In addition, adopt this lubricating grease, form fluid film lubrication, be conducive to the limit running speed improving bearing.But; when bearing is operated under high temperature for a long time; the lubricating grease that initial sealing enters bearing is often difficult to fulfil the mission of bearing being carried out to lifetime lubrication; often have to bearing carry out frequently grease replenishing or shut down because of the premature failure of lubricating grease change a whole set of bearing; like this; neither convenient working, also because replacing bearing or shutdown cause waste.In addition, the price of Perfluoropolyether lubricating grease is very high, makes a lot of bearing be difficult to bear.In addition, exceed the serviceability temperature (such as 260 degree) of PFPE, the material volatilized, cracking is harmful in addition, can be caused bearing wear or stuck because of its lubrication failure by it.
2, solid film lubricating: in some way solid lubricant graphite, molybdenum disulfide etc. are introduced bearing cavity, finally make to form solid film lubricating between bearing touch working surface.Existing common three kinds of incorporation way: (1) directly adds the solid lubricant such as graphite, molybdenum disulfide powder in bearing, cause is disposable adding, the amount added certainly will be more, the gathering of powder will be formed like this, the powder be inserted between rolling element and raceway convergence gap is too much, eliminate the due working gap of bearing, hinder the normal operation of retardance rolling element and retainer, even cause bearing stuck; If the amount of powder added is very few, then bearing can be caused to occur to owe lubrication, cause the wear out failure of bearing, thus affect the service life of bearing; (2) in bearing, between every two rolling elements, insert spacer rod or spacing block that the solid lubricants such as graphite make, spacer rod or spacing block because of degrees of freedom too much, easy deflection in bearing operation process, and then hinder the normal operation of blocking bearing; In addition, spacer rod block is suitable only for without retainer bearing, but bearing is not once have retainer, and each rolling element just can not get well isolation and motion guidance; Therefore, such incorporation way is suitable only for pole low speed bearing; (3) adopt organic self lubricating material such as teflon, polyether-ether-ketone to make overall crown retainer and insert bearing cavity, teflon, polyether-ether-ketone do not belong to free machining material, can bring the rising of processing cost; More difficult in bearing movable process have solid lubricant to come off, and can cause the Starved Lubrication between rolling element and raceway, thus affect the service life of bearing; In addition, also to install dust cover or collar etc. additional, prevent retainer from bearing operation process, exiting bearing vertically.Can find out, latter two introducing method is all not simple, and solid lubrication limits the lifting of bearing working speed.
Also have, in view of the merits and demerits that above-mentioned fluid lubrication and solid lubrication are given prominence to separately, in the occasion that bearing operating temperatures range spans is larger, often in the selection of oiling agent, be in dilemma: the lubricating grease selecting based on PFPE oil, cost is high, bearing Life cycle lubrication may be can not meet; Select solid lubricant, bearing be not long-term work on peak temperature point, lubricating grease is superfluous to resistant to elevated temperatures deposit, and bring be introduce difficulty, bearing working rotating speed is restricted.
Therefore, when bearing operating temperatures is not very high, adopts fluid lubrication, and be the fluid lubrication that cost has a clear superiority in than PFPE; When temperature is very high or high especially, then adopt solid lubrication, just become to put in bearing engineer face previous relatively more outstanding engineering problem.
Summary of the invention
The first object of the present invention is the making method of the rolling bearing providing a kind of mixture to lubricate, to solve in prior art, high-temperature bearing adopts Perfluoropolyether lubricating grease, when adopting fluid lubricating method, the oiling agent high cost and being difficult to existed meets the problem of lifetime lubrication and high-temperature bearing uses solid lubricant, when carrying out solid lubrication, the solid lubricant of existence introduces bearing cavity trouble and technical matters interference and the highest running speed of bearing may being brought to be restricted to the proper motion of rolling element.
The second object of the present invention is the rolling bearing providing a kind of mixture to lubricate, to solve in prior art, high-temperature bearing adopts Perfluoropolyether lubricating grease, when adopting fluid lubricating method, the oiling agent high cost and being difficult to existed meets the problem of lifetime lubrication and high-temperature bearing uses solid lubricant, when carrying out solid lubrication, the solid lubricant of existence introduces bearing cavity trouble and technical matters interference and the highest running speed of bearing may being brought to be restricted to the proper motion of rolling element.
The object of the invention is achieved through the following technical solutions:
A making method for the rolling bearing of mixture lubrication, comprises the following steps:
(1) make the mixture comprising polyethers oil and solid lubricant micro mist, at normal temperatures in the pasty state, the volume of described solid lubricant accounts for the 10%-90% of described mixture total volume to described mixture;
(2) by pasty mixture injection bearing inner chamber;
(3) punching press dust cover, makes dust sealing bearing;
(4) when bearing working, mixture like lubricating grease, when bearing works under the environment of temperature lower than the oxidative cleavage temperature of polyethers oil, forms fluid film lubrication at the flowing of Bearing inner and distributional class; When working under the environment of temperature higher than the oxidative cleavage temperature of polyethers oil, the volatilization of polyethers oil, bearing turns to solid film lubricating from fluid film lubrication, makes bearing avoid wearing and tearing and lose efficacy.
Further, described polyethers oil comprises polyglycol ether (PAG).
Further, described solid lubricant comprises one of them or its combination of soft metal solid lubricant, metallic compound solid lubricant, inorganic solid lubriation material and organic solid lubriation material.
Further, described metallic compound solid lubricant comprises molybdenum disulfide.
Further, described inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
Further, the volume of the mixture of described injection bearing inner chamber accounts for the 10%-100% of described bearing cavity free space.
Further, described bearing comprises rolling element, retainer, outer ring and inner ring, described rolling element, retainer, dust cover, outer ring and inner ring adopt steel manufacture, carry out thermo-chemical treatment after making, and described chemical heat treatment method comprises manganese-series phosphorized, salt bath nitriding or Dacromet/steel.
A kind of rolling bearing, comprise outer ring, inner ring, rolling element between embedding outer ring raceway and inner ring raceway, by the rolling element along the circumferential direction retainer of even partition, dust cover and oiling agent, described oiling agent is the mixture comprising polyethers oil and solid lubricant micro mist.
Further, described polyethers oil comprises polyglycol ether (PAG).
Further, described solid lubricant comprises one of them or its combination of soft metal solid lubricant, metallic compound solid lubricant, inorganic solid lubriation material and organic solid lubriation material.
Further, described metallic compound solid lubricant comprises molybdenum disulfide.
Further, described inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
Further, the volume of described solid lubricant accounts for the 10%-90% of described mixture total volume.
Compared with prior art, the present invention has following advantage:
1, both to have overcome PFPE high temperature grease price high and at high temperature tie the problem of carbon in the present invention, also overcome the problem that must adopt solid lubricant at the very start, bearing can initiatively realize the transformation of fluid lubrication to solid lubrication according to running temperature, fluid lubrication and solid lubrication sharpest edges are separately given full play to, improve operational reliability and the life-span of high-temperature bearing, have broad application prospects at high temperature, superhigh temperature, wide range high-temperature field;
2, within high temperature 220 degree, polyethers oil plays main lubrication, and solid lubricant only plays collaborative lubricating effect, and now, bearing is fluid film lubrication, and bearing can carefree running under relatively high rotating speed;
3 once temperature also long-term maintenance more than 220 degree, under the effect of high temperature oxidation, polyethers oil easily chain rupture generates low molecular hydroxyl and hydroxy compounds, and be dissolved in the oil of not yet oxidized chain rupture or vapor away rapidly, the normal operation of sediments and colloid substance obstruction bearing can not be generated, along with the oxidative cleavage of polyethers oil and volatilization in bearing, turn to solid film lubricating from fluid film lubrication gradually;
4, polyethers oil, solid lubricant and functional additive can be bought from market, after mixture completes, just mixture can be treated as lubricating grease inject toward bearing cavity and press-fit dust cover, not only mixture making method is simple, even the making method of a whole set of bearing is also uncomplicated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rolling bearing that the present invention is oiling agent with the mixture of polyethers oil, graphite and molybdenum disulfide.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail.
Embodiment
In the present embodiment, polyethers grease separation taking polyethylene glycol ether (PAG), solid lubricant chooses graphite and molybdenum disulfide makes double-side dustproof lid seal deep groove ball bearing, as shown in Figure 1, this bearing manufacture process and method as follows:
(1) solid lubricant graphite, molybdenum disulfide micro mist and other filler, additive are poured in polyglycol ether (PAG), be uniformly mixed, make pasty mixture 15, as the oiling agent of this bearing;
(2) outer ring 11, inner ring 12 and rolling element 13 all adopt Bearing Steel to make, and carry out Q-tempering according to bearing use temp scope, through the shaping laggard row thermo-chemical treatment of the machining such as grinding, superfinishing, in this example, carry out manganese-series phosphorized process;
(3) retainer 14 adopts intermediate carbon steel sheet manufacture, the manganese-series phosphorized process of the shaping laggard row of machining;
(4) according to the assembly technology of existing deep groove ball bearing, bearing outer ring 11, inner ring 12 and the rolling element 13 crossed phosphatization clean, dry, trap of dividing into groups, and place retainer 14 and riveted becomes open type rolling bearing;
(5) by ready mixture oiling agent 15 injection bearing inner chamber, the volume of the mixture of injection bearing inner chamber can account for the 10%-100% of bearing cavity free space, selects 50% here;
(6) according to existing deep groove ball bearing dust cover process for stamping, the dust cover 16 that punching press manufactures through the two-sided steel of phosphatization, the double-side dustproof lid seal deep groove ball rolling bearing that namely to make with the mixture of polyethers oil, graphite and molybdenum disulfide be oiling agent.
Polyglycol ether (PAG) has good lubrication property, and when bearing operating temperatures is not very high, within such as 220 degree, Bearing inner forms the fluid lubrication film of polyglycol ether, and solid lubricant graphite and molybdenum disulfide carry out auxiliary collaborative lubrication; When bearing operating temperatures is very high, during such as more than 220 degree, the chain rupture of polyglycol ether high temperature oxidation, form low molecular hydroxyl and hydroxy compounds, be dissolved in the polyglycol ether of not yet oxidative cleavage or vapor away rapidly, can not form the normal operation of sediments and jelly obstruction bearing, along with the high temperature oxidation chain rupture of polyglycol ether, bearing lubrication proceeds to solid lubrication from fluid lubrication.Polyglycol ether and graphite, molybdenum disulfide, in the different operating temperature range of bearing, have all been given play to respective maximum effect, finally ensure that hot operation reliability and the service life of bearing.
Manganese-series phosphorized process is carried out to outer ring 11, inner ring 12, rolling element 13, retainer 14 and dust cover 16, its phosphating coat avoids except corrosion except making these parts in without oily situation, also help and improve oiling agent to the absorption of bearing parts working surface, improve the greasy property of bearing.In addition, manganese-series phosphorized processing method also can replace by the method for salt bath Nitrizing Treatment method or Dacromet/steel.
Double-side dustproof lid 16 seals, and can limit oiling agent and leak to Bearing outer from bearing cavity, also have the effect preventing foreign from entering the agent of bearing cavity pollution lubricating.
In the present invention, polyethers oil can be polyglycol ether (PAG), can also be other polyether polyol.Additive comprises antifriction additive, antiwear additive, anti-extreme pressure agent, rust-inhibiting additive, antioxidant etc., can select different additives according to different Environmental Conditions.
In the present invention, solid lubricant also can adopt other inorganic solid lubriation material and metallic compound solid lubricant, or one of them or its combination of soft metal solid lubricant and organic solid lubriation material.
Refer to Fig. 1 again, rolling bearing of the present invention, comprise outer ring 11, inner ring 12, embed rolling element 13 between outer ring raceway and inner ring raceway, by the rolling element 13 along the circumferential direction retainer 14 of even partition, dust cover 16 and oiling agent 15, oiling agent 15 is for comprising the mixture of polyethers oil and solid lubricant micro mist.
Further, solid lubricant comprises one of them or its combination of soft metal solid lubricant, metallic compound solid lubricant, inorganic solid lubriation material and organic solid lubriation material.Wherein, preferred molybdenum disulfide in metallic compound solid lubricant, in inorganic solid lubriation material, preferred graphite, also can select pottery or bentonite clay.Further, the volume of solid lubricant accounts for the 10%-90% of mixture total volume.
It should be noted that, above-mentioned said rolling bearing (or bearing) contains the rolling bearing of all types and structure, comprises ball bearing, cylindrical bearing, needle bearing, conical bearing, selfaligning roller bearing and their biserial and multirow bearing, distortion and combination bearing etc.
It is high and at high temperature tie the problem of carbon that the present invention had both overcome PFPE high temperature grease price, also overcome the problem that must adopt solid lubricant at the very start, bearing can initiatively realize the transformation of fluid lubrication to solid lubrication according to running temperature, fluid lubrication and solid lubrication sharpest edges are separately given full play to, improve operational reliability and the life-span of high-temperature bearing, have broad application prospects at high temperature, superhigh temperature, wide range high-temperature field.Within high temperature 220 degree, polyethers oil plays main lubrication, and solid lubricant only plays collaborative lubricating effect, and now, bearing is fluid film lubrication, and bearing can carefree running under relatively high rotating speed.Keep once temperature is also long-term more than 220 degree, under the effect of high temperature oxidation, polyethers oil easily chain rupture generates low molecular hydroxyl and hydroxy compounds, and be dissolved in the oil of not yet oxidized chain rupture or vapor away rapidly, the normal operation of sediments and colloid substance obstruction bearing can not be generated, along with the oxidative cleavage of polyethers oil and volatilization in bearing, turn to solid film lubricating from fluid film lubrication gradually.In addition, polyethers oil, solid lubricant and functional additive can be bought from market, after mixture completes, just mixture can be treated as lubricating grease inject toward bearing cavity and press-fit dust cover, not only mixture making method is simple, even the making method of a whole set of bearing is also uncomplicated.
Be only several specific embodiments of the application above, but the application is not limited thereto, the changes that any person skilled in the art can think of, all should drops in the protection domain of the application.
Claims (9)
1. a making method for the rolling bearing of mixture lubrication, is characterized in that, comprise the following steps:
(1) make the mixture comprising polyethers oil and solid lubricant micro mist, at normal temperatures in the pasty state, the volume of described solid lubricant accounts for the 10%-90% of described mixture total volume to described mixture; Described polyethers oil comprises polyglycol ether (PAG); Described solid lubricant comprises one of them or its combination of soft metal solid lubricant, metallic compound solid lubricant, inorganic solid lubriation material and organic solid lubriation material;
(2) by pasty mixture injection bearing inner chamber;
(3) punching press dust cover, makes dust sealing bearing;
(4) when bearing working, mixture like lubricating grease, when bearing works under the environment of temperature lower than the oxidative cleavage temperature of polyethers oil, forms fluid film lubrication at the flowing of Bearing inner and distributional class; When working under the environment of temperature higher than the oxidative cleavage temperature of polyethers oil, the volatilization of polyethers oil, bearing turns to solid film lubricating from fluid film lubrication, makes bearing avoid wearing and tearing and lose efficacy.
2. the making method of the rolling bearing of a kind of mixture lubrication as claimed in claim 1, it is characterized in that, described metallic compound solid lubricant comprises molybdenum disulfide.
3. the making method of the rolling bearing of a kind of mixture lubrication as claimed in claim 1, it is characterized in that, described inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
4. the making method of the rolling bearing of a kind of mixture lubrication as claimed in claim 1, it is characterized in that, the volume of the mixture of described injection bearing inner chamber accounts for the 10%-100% of described bearing cavity free space.
5. the making method of the rolling bearing of a kind of mixture lubrication as claimed in claim 1, it is characterized in that, described bearing comprises rolling element, retainer, outer ring and inner ring, described rolling element, retainer, dust cover, outer ring and inner ring adopt steel manufacture, carry out thermo-chemical treatment after making, described chemical heat treatment method comprises manganese-series phosphorized, salt bath nitriding or Dacromet/steel.
6. a rolling bearing, comprise outer ring, inner ring, rolling element between embedding outer ring raceway and inner ring raceway, by the rolling element along the circumferential direction retainer of even partition, dust cover and oiling agent, it is characterized in that, described oiling agent is the mixture comprising polyethers oil and solid lubricant micro mist; Described polyethers oil comprises polyglycol ether (PAG); Described solid lubricant comprises one of them or its combination of soft metal solid lubricant, metallic compound solid lubricant, inorganic solid lubriation material and organic solid lubriation material; When bearing working, mixture like lubricating grease, when bearing works under the environment of temperature lower than the oxidative cleavage temperature of polyethers oil, forms fluid film lubrication at the flowing of Bearing inner and distributional class; When working under the environment of temperature higher than the oxidative cleavage temperature of polyethers oil, the volatilization of polyethers oil, bearing turns to solid film lubricating from fluid film lubrication, makes bearing avoid wearing and tearing and lose efficacy.
7. a kind of rolling bearing as claimed in claim 6, is characterized in that, described metallic compound solid lubricant comprises molybdenum disulfide.
8. a kind of rolling bearing as claimed in claim 6, is characterized in that, described inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
9. a kind of rolling bearing as claimed in claim 6, is characterized in that, the volume of described solid lubricant accounts for the 10%-90% of described mixture total volume.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210047675.2A CN102588445B (en) | 2012-02-28 | 2012-02-28 | A kind of making method of rolling bearing of mixture lubrication and rolling bearing |
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| CN201210047675.2A CN102588445B (en) | 2012-02-28 | 2012-02-28 | A kind of making method of rolling bearing of mixture lubrication and rolling bearing |
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| CN102588445A CN102588445A (en) | 2012-07-18 |
| CN102588445B true CN102588445B (en) | 2015-09-09 |
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| JP6733329B2 (en) * | 2016-06-10 | 2020-07-29 | 株式会社ジェイテクト | Rolling bearing, mechanical element, and solid film forming method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705829A (en) * | 2003-08-25 | 2005-12-07 | 日立建机株式会社 | Sliding bearing assembly and sliding bearing |
| CN102072257A (en) * | 2010-11-12 | 2011-05-25 | 上海斐赛轴承科技有限公司 | Method for manufacturing rolling bearing lubricated by maintaining lubricating oil through UHMWPE (Ultra High Molecular Weight Polyethylene) and rolling bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246231A (en) * | 1997-03-06 | 1998-09-14 | Hitachi Constr Mach Co Ltd | Sliding bearing assembly |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1705829A (en) * | 2003-08-25 | 2005-12-07 | 日立建机株式会社 | Sliding bearing assembly and sliding bearing |
| CN102072257A (en) * | 2010-11-12 | 2011-05-25 | 上海斐赛轴承科技有限公司 | Method for manufacturing rolling bearing lubricated by maintaining lubricating oil through UHMWPE (Ultra High Molecular Weight Polyethylene) and rolling bearing |
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