CN102588445A - Mixture lubricated rolling bearing and manufacturing method thereof - Google Patents
Mixture lubricated rolling bearing and manufacturing method thereof Download PDFInfo
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- CN102588445A CN102588445A CN2012100476752A CN201210047675A CN102588445A CN 102588445 A CN102588445 A CN 102588445A CN 2012100476752 A CN2012100476752 A CN 2012100476752A CN 201210047675 A CN201210047675 A CN 201210047675A CN 102588445 A CN102588445 A CN 102588445A
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Abstract
The invention provides a manufacturing method of a rolling bearing which takes mixture of polyethylene oil and solid lubricating material as lubricant and the rolling bearing. The manufacturing method comprises the steps of injecting the lubricant which comprises mixture of polyethylene oil and solid lubricating material micropowder into cavity of the bearing and stamping a dust cap, thus a high temperature resistant sealed bearing is obtained. When the bearing operates at the temperature of being lower than oxidation chain scission temperature of the polyethylene oil, fluid film lubrication is formed; and when the bearing operates at the temperature of being higher than the oxidation chain scission temperature of the polyethylene oil, the polyethylene oil volatilizes, and the fluid film lubrication is changed into solid film lubrication. Compared with the prior art, the invention has the advantages that the problems that perfluoropolyether high temperature lubrication oil has high price and carbon is deposited at high temperature are solved, the problem that solid lubricant is required to be adopted from the start is solved, the bearing can actively realize conversion from fluid lubrication to solid lubrication according to running temperature, respective maximum advantages of the fluid lubrication and the solid lubrication are fully played, operational reliability of the bearing is improved and life of the bearing is prolonged, and the bearing is applicable to various high temperature environments.
Description
Technical field
The present invention relates to the technical field of extraordinary rolling bearing, particularly a kind of mixture with polyethers oil and solid lubricant is the making method and the rolling bearing of the rolling bearing of oiling agent.
Background technique
The rolling bearing of working under the hot environment, selection of lubricants are directly connected to bearing operational reliability and service life at high temperature, and be therefore most important.Main at present employing fluid film lubricates and two kinds of lubricating systems of solid film lubricating, describes and point out the limitation and the deficiency of its existence below respectively:
1, fluid film is lubricated: selecting PFPE (claiming the perfluoroalkyl polyethers again, PFPE or PFAE) is the high temperature resistant lubricating grease of base oil, generally is crowded into lubricating grease by polytetrafluoroethylene (PTFE).PFPE has very strong chemical inertness, heatproof characteristic, and teflon does not have dropping point.Therefore, under temperature, still has certain life-span by the synthetic lubricating grease of PFPE and teflon up to 260 degree.In addition, adopt this lubricating grease, it is lubricated to form fluid film, helps improving the limit running speed of bearing.But; When bearing is operated in high temperature following time for a long time; The lubricating grease that initial sealing is gone into bearing often is difficult to fulfil bearing is carried out lubricated throughout one's life mission, often has to bearing is carried out frequent grease replenishing or shut down because of the premature failure of lubricating grease changing a whole set of bearing, like this; Neither convenient working also causes waste because of changing bearing or shutdown.In addition, the price of Perfluoropolyether lubricating grease is very high, makes a lot of bearings be difficult to bear.It exceeds the serviceability temperature (such as 260 degree) of PFPE again, and the material that it will volatilize, cracking is harmful in addition, is understood because of its lubrication failure and caused bearing wear or stuck.
2, solid film lubricating: in some way solid lubricant graphite, molybdenum disulfide etc. are introduced bearing cavity, finally make between bearing contact working surface, to form solid film lubricating.Existing common three kinds of introducing modes: (1) directly adds solid lubricant powder such as graphite, molybdenum disulfide in bearing; Because of being disposable adding, the amount of adding certainly will be more, will form the gathering of powder like this; The powder that is inserted between rolling element and the 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 that adds is very few, then can cause bearing to owe lubricated, cause the wear out failure of bearing, thereby influence the service life of bearing; (2) insert spacer rod or the spacing block that solid lubricant such as graphite is processed in the bearing between per two rolling elements, spacer rod or spacing block are too much because of degrees of freedom, deflection easily in the bearing operation process, and then hinder the normal operation of retardance bearing; Again it, the spacer rod piece only is suitable for not having the retainer bearing, but in a single day bearing does not have retainer, each rolling element just can not get well isolating and motion guidance; Therefore, such introducing mode only is suitable for utmost point low speed bearing; (3) adopt organic self lubricating materials such as teflon, polyether-ether-ketone to process whole crown retainer and insert bearing cavity, teflon, polyether-ether-ketone do not belong to free machining material, can bring the rising of processing cost; In the bearing movable process difficulty have solid lubricant to come off, can cause oil-poor lubricated between rolling element and the raceway, thereby influence the service life of bearing; In addition, also to install dust cover or collar etc. additional, prevent that retainer from withdrawing from bearing vertically in the bearing operation process.Can find out that back two kinds of introducing methods all are not simple, and solid lubrication has limited the lifting of bearing working speed.
Also have; In view of above-mentioned fluid lubrication and the outstanding separately merits and demerits of solid lubrication; In the bigger occasion of bearing working temperature range span; Often on selection of lubricants, be in the dilemma: selecting PFPE is the lubricating grease of base oil, and cost is high, it is lubricated to have satisfied not the bearing Life cycle; Select solid lubricant, bearing be not long-term work on peak temperature point, lubricating grease is superfluous to resistant to elevated temperatures deposit, and what bring is to introduce difficulty, the bearing working rotating speed is restricted etc.
Therefore,, adopt fluid lubrication, and be the fluid lubrication that cost has a clear superiority in than PFPE when not being very high in the bearing working temperature; When temperature is very high or high especially, adopt solid lubrication again, just become pendulum in the previous relatively more outstanding engineering problem of bearing engineer face.
Summary of the invention
First purpose of the present invention is to provide the making method of the lubricated rolling bearing of a kind of mixture; To solve in the existing technology; High-temperature bearing adopts Perfluoropolyether lubricating grease; When adopting fluid lubricating method; The oiling agent cost of existence is too high to satisfy lifelong lubricated problem and high-temperature bearing use solid lubricant with being difficult to, when carrying out solid lubrication, and the technical matters that the solid lubricant of existence is introduced the bearing cavity trouble and possibly brought interference and the highest running speed of bearing to be restricted the proper motion of rolling element.
Second purpose of the present invention is to provide a kind of mixture lubricated rolling bearing; To solve in the existing technology; High-temperature bearing adopts Perfluoropolyether lubricating grease; When adopting fluid lubricating method; The oiling agent cost of existence is too high to satisfy lifelong lubricated problem and high-temperature bearing use solid lubricant with being difficult to, when carrying out solid lubrication, and the technical matters that the solid lubricant of existence is introduced the bearing cavity trouble and possibly brought interference and the highest running speed of bearing to be restricted the proper motion of rolling element.
The object of the invention realizes through following technological scheme:
The making method of the rolling bearing that a kind of mixture is lubricated may further comprise the steps:
(1) make the mixture comprise polyethers oil and solid lubricant micro mist, said mixture at normal temperatures in the pasty state, the volume of said solid lubricant accounts for the 10%-90% of said mixture total volume;
(2) with pasty mixture injection bearing inner chamber;
(3) punching press dust cover is processed the dust sealing bearing;
(4) when bearing working, mixture bearing inner flow and distributional class like lubricating grease, the environment of oxidative cleavage temperature that bearing is lower than polyethers oil in temperature forms fluid film and lubricates down during work; The environment of oxidative cleavage temperature that is higher than polyethers oil in temperature is down during work, the volatilization of polyethers oil, and bearing turns to solid film lubricating from fluid film is lubricated, makes bearing avoid wearing and tearing and inefficacy.
Further, said polyethers oil comprises polyglycol ether (PAG).
Further, said 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, said metallic compound solid lubricant comprises molybdenum disulfide.
Further, said inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
Further, the volume of the mixture of said injection bearing inner chamber accounts for the 10%-100% of said bearing cavity free space.
Further; Said bearing comprises rolling element, retainer, outer ring and inner ring; Said rolling element, retainer, dust cover, outer ring and inner ring adopt the steel manufacturing, carry out thermo-chemical treatment after processing, and that said chemical heat treatment method comprises is manganese-series phosphorized, salt bath nitriding or Dacroment coating.
A kind of rolling bearing; Comprise rolling element between outer ring, inner ring, embedding outer ring raceway and the inner ring raceway, with retainer, dust cover and oiling agent that rolling element is along the circumferential direction evenly separated, said oiling agent is the mixture that comprises polyethers oil and solid lubricant micro mist.
Further, said polyethers oil comprises polyglycol ether (PAG).
Further, said 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, said metallic compound solid lubricant comprises molybdenum disulfide.
Further, said inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
Further, the volume of said solid lubricant accounts for the 10%-90% of said 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 be realized the transformation of fluid lubrication to solid lubrication according to running temperature; Given full play to fluid lubrication and solid lubrication sharpest edges separately, improved the operational reliability and the life-span of high-temperature bearing, had broad application prospects in high temperature, superhigh temperature, wide range high temperature field;
2, in high temperature 220 degree, polyethers oil plays main lubrication, and solid lubricant only plays collaborative lubricating effect, and at this moment, bearing is that fluid film is lubricated, and bearing can carefree running under high relatively rotating speed;
In case 3 temperature surpass 220 degree and long-term the maintenance; Under the effect of high temperature oxidation; Polyethers oil chain rupture easily generates low molecular hydroxyl and hydroxy compounds, and is dissolved in the oil of not oxidized chain rupture still or vapors away rapidly, can not generate the normal operation of sediments and colloid substance obstruction bearing; Bearing is interior along with polyethers oily oxidative cleavage and volatilization, lubricates from fluid film gradually to turn to solid film lubricating;
4, polyethers oil, solid lubricant and functional additive can be bought from market; After mixture completes; Just can mixture treated as the past bearing cavity injection of lubricating grease and press-fit dust cover, not only the mixture making method be simple, even the making method of a whole set of bearing is also uncomplicated.
Description of drawings
Fig. 1 is the structural representation of the rolling bearing of oiling agent for the present invention with the mixture of polyethers oil, graphite and molybdenum disulfide.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
Embodiment
In the present embodiment, polyethers grease separation taking polyethylene glycol ether (PAG), solid lubricant choose graphite and molybdenum disulfide is processed two-sided dust cover seal deep groove ball bearing, and is as shown in Figure 1, and this bearing manufacture process and method are following:
(1) solid lubricant graphite, molybdenum disulfide micro mist and other filler, additive are poured in the polyglycol ether (PAG), mixed, process 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 process, and carry out Q-tempering according to the bearing use temp scope, through the laggard capable thermo-chemical treatment of machining moulding such as grinding, ultra essence, in this example, carry out manganese-series phosphorized processing;
(3) retainer 14 adopts intermediate carbon steel sheet manufacturing, the manganese-series phosphorized processing of the laggard row of machining moulding;
(4) according to the assembly technology of existing deep groove ball bearing, bearing outer ring 11, inner ring 12 and the rolling element 13 that phosphatization the is crossed trap of cleaning, dry, divide into groups is placed retainer 14 and riveted and is become the open type rolling bearing;
(5) with ready mixture oiling agent 15 injection bearing inner chambers, 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 is made through the two-sided steel of phosphatization, the mixture of promptly processing with polyethers oil, graphite and molybdenum disulfide is the two-sided dust cover seal deep groove ball rolling bearing of oiling agent.
Polyglycol ether (PAG) has good lubrication property, and when not being very high, in 220 degree, the inner fluid lubrication film that forms polyglycol ether of bearing, solid lubricant graphite and molybdenum disulfide assist to work in coordination with and are lubricated in the bearing working temperature; When the bearing working temperature very high; Such as surpassing 220 when spending, the chain rupture of polyglycol ether high temperature oxidation forms low molecular hydroxyl and hydroxy compounds; Be dissolved in as yet not in the polyglycol ether of oxidative cleavage or vapor away rapidly; Can not form the normal operation that sediments and jelly hinder bearing, along with the high temperature oxidation chain rupture of polyglycol ether, bearing lubrication changes solid lubrication over to from fluid lubrication.Polyglycol ether and graphite, molybdenum disulfide have all been given play to maximum separately effect in the different operating temperature range of bearing, have finally guaranteed the hot operation reliability and the service life of bearing.
16 sealings of two-sided dust cover, can limit oiling agent from bearing cavity to the bearing external leaks, also have the effect that the foreign of preventing gets into the agent of bearing cavity pollution lubricating.
In the present invention, polyethers oil can be polyglycol ether (PAG), can also be other PPG.Additive comprises antifriction additive, antiwear additive, anti-EP 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.
See also 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 the inner ring raceway, with retainer 14, dust cover 16 and oiling agent 15 that rolling element 13 is along the circumferential direction evenly separated, 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 the metallic compound solid lubricant, preferred graphite also can be selected pottery or bentonite clay in the inorganic solid lubriation material.And the volume of solid lubricant accounts for the 10%-90% of mixture total volume.
Need to prove; Above-mentioned said rolling bearing (or bearing) is contained 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.
The present invention had both overcome PFPE high temperature grease price height and had at high temperature tied the problem of carbon; Also overcome the problem that must adopt solid lubricant at the very start; Bearing can initiatively be realized the transformation of fluid lubrication to solid lubrication according to running temperature; Given full play to fluid lubrication and solid lubrication sharpest edges separately, improved the operational reliability and the life-span of high-temperature bearing, had broad application prospects in high temperature, superhigh temperature, wide range high temperature field.In high temperature 220 degree, polyethers oil plays main lubrication, and solid lubricant only plays collaborative lubricating effect, and at this moment, bearing is that fluid film is lubricated, and bearing can carefree running under high relatively rotating speed.In case temperature surpasses 220 degree and long-term the maintenance; Under the effect of high temperature oxidation; Polyethers oil chain rupture easily generates low molecular hydroxyl and hydroxy compounds, and is dissolved in the oil of not oxidized chain rupture still or vapors away rapidly, can not generate the normal operation of sediments and colloid substance obstruction bearing; Bearing is interior along with polyethers oily oxidative cleavage and volatilization, lubricates from fluid film gradually to turn to solid film lubricating.In addition; Polyethers oil, solid lubricant and functional additive can be bought from market; After mixture completes; Just can mixture treated as the past bearing cavity injection of lubricating grease and press-fit dust cover, not only the mixture making method be simple, even the making method of a whole set of bearing is also uncomplicated.
More than the disclosed several specific embodiments that are merely the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (13)
1. the making method of the lubricated rolling bearing of a mixture is characterized in that, may further comprise the steps:
(1) make the mixture comprise polyethers oil and solid lubricant micro mist, said mixture at normal temperatures in the pasty state, the volume of said solid lubricant accounts for the 10%-90% of said mixture total volume;
(2) with pasty mixture injection bearing inner chamber;
(3) punching press dust cover is processed the dust sealing bearing;
(4) when bearing working, mixture bearing inner flow and distributional class like lubricating grease, the environment of oxidative cleavage temperature that bearing is lower than polyethers oil in temperature forms fluid film and lubricates down during work; The environment of oxidative cleavage temperature that is higher than polyethers oil in temperature is down during work, the volatilization of polyethers oil, and bearing turns to solid film lubricating from fluid film is lubricated, makes bearing avoid wearing and tearing and inefficacy.
2. the making method of the rolling bearing that a kind of mixture as claimed in claim 1 is lubricated is characterized in that said polyethers oil comprises polyglycol ether (PAG).
3. the making method of the rolling bearing that a kind of mixture as claimed in claim 1 is lubricated; It is characterized in that said 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.
4. the making method of the rolling bearing that a kind of mixture as claimed in claim 3 is lubricated is characterized in that said metallic compound solid lubricant comprises molybdenum disulfide.
5. the making method of the rolling bearing that a kind of mixture as claimed in claim 3 is lubricated is characterized in that said inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
6. the making method of the rolling bearing that a kind of mixture as claimed in claim 1 is lubricated is characterized in that the volume of the mixture of said injection bearing inner chamber accounts for the 10%-100% of said bearing cavity free space.
7. the making method of the rolling bearing that a kind of mixture as claimed in claim 1 is lubricated; It is characterized in that; Said bearing comprises rolling element, retainer, outer ring and inner ring; Said rolling element, retainer, dust cover, outer ring and inner ring adopt the steel manufacturing, carry out thermo-chemical treatment after processing, and that said chemical heat treatment method comprises is manganese-series phosphorized, salt bath nitriding or Dacroment coating.
8. rolling bearing; The retainer, dust cover and the oiling agent that comprise rolling element between outer ring, inner ring, embedding outer ring raceway and the inner ring raceway, rolling element is along the circumferential direction evenly separated; It is characterized in that said oiling agent is the mixture that comprises polyethers oil and solid lubricant micro mist.
9. a kind of rolling bearing as claimed in claim 8 is characterized in that, said polyethers oil comprises polyglycol ether (PAG).
10. a kind of rolling bearing as claimed in claim 8; It is characterized in that said 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.
11. a kind of rolling bearing as claimed in claim 10 is characterized in that, said metallic compound solid lubricant comprises molybdenum disulfide.
12. a kind of rolling bearing as claimed in claim 10 is characterized in that, said inorganic solid lubriation material comprises graphite, pottery and bentonite clay.
13. a kind of rolling bearing as claimed in claim 8 is characterized in that the volume of said solid lubricant accounts for the 10%-90% of said mixture total volume.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN102588445A true CN102588445A (en) | 2012-07-18 |
| CN102588445B CN102588445B (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853066A (en) * | 2016-06-10 | 2020-10-30 | 株式会社捷太格特 | Rolling bearing, machine element, and solid film forming method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246231A (en) * | 1997-03-06 | 1998-09-14 | Hitachi Constr Mach Co Ltd | Sliding bearing assembly |
| 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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2012
- 2012-02-28 CN CN201210047675.2A patent/CN102588445B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246231A (en) * | 1997-03-06 | 1998-09-14 | Hitachi Constr Mach Co Ltd | Sliding bearing assembly |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853066A (en) * | 2016-06-10 | 2020-10-30 | 株式会社捷太格特 | Rolling bearing, machine element, and solid film forming method |
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| CN102588445B (en) | 2015-09-09 |
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