CN1078608C - Solid lubricant - Google Patents
Solid lubricant Download PDFInfo
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- CN1078608C CN1078608C CN99117431A CN99117431A CN1078608C CN 1078608 C CN1078608 C CN 1078608C CN 99117431 A CN99117431 A CN 99117431A CN 99117431 A CN99117431 A CN 99117431A CN 1078608 C CN1078608 C CN 1078608C
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- lubricant
- solid lubricant
- tetrafluoroethylene
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Abstract
The present invention relates to solid lubricant which is composed of components by the following shares by weight: 38 to 66 of polytetrafluoroethylene, 27 to 51 of lubrication material, 8 to 5 of reinforcing component and 3 to 2.5 of auxiliary component, wherein the lubricant material is composed of molybdenum disulfide and graphite according to a weight proportion of 1/(1.5 to 2.5), the reinforcing component is composed of copper powder and glass fiber according to a weight proportion of 1/(2 to 4), and the auxiliary component is composed of antimonous oxide, iron manganese phosphate and lead oxide according to a weight proportion of 1/(1.5 to 2) /(1 to 1.5).
Description
Though what the present invention relates to is a kind of solid lubricant that at first is suitable for but is not limited only to use between railway locomotive wheel rim and rail.
Lubricant is absolutely necessary for slowing down various forms of mechanical frictions.Lubricant commonly used can have the branch of liquid oily, paste and solid etc. on form, and with its performance separately and characteristics in different fields and/or application site separately use range is arranged.Wheel-rail wear with railway is an example, and the wheel rim of train high speed running and the friction between the rail side and loss thereof are very outstanding and harmful.For slowing down the abrasion between wheel track, increase the service life, it is necessary being lubricated between wheel rim and rail head medial surface.Most common form is in wheel flange lubricating at present, to have baroque baster such as pilot circuit, gas circuit, oil circuit or sprayer with the lubricating grease coating or spray in the wheel rim position.Because the centrifugation that the rotating wheel of train operation high speed produces, the disorder of air are flowed and are in servicely inevitably jolted; liquid machine oil not only is difficult to be coated with or be ejected on the fixed position exactly and form the successive oil film; and regular meeting sprays, splashes and soak on the tread of wheel track, reduced the adhesion factor of wheel and causes idle running.Simultaneously, the waste of this mode is big, and pollutes body part, railway roadbed, roadbed around it, particularly environment such as air, soil and underground water source is caused the pollution of permanence.
For addressing this problem, some research and reports have been had about wheel rim of locomotive solid lubrication material.Publication number is that the Chinese patent literature of CN1088964A has been introduced and a kind ofly molybdenumdisulphide, Graphite Powder 99, boron nitride powdery thing mixed in tetrafluoroethylene, vibrin and the change epoxy resins solid type wheel track of curing molding, wheel flange lubricating agent under 20-90 ℃ of condition.By its mold temperature as can be known, its to be actually used in the solidified resinous material be Resins, epoxy.Service testing shows, because of the physical strength of this solid lubricant is low and crisp, is unable to undergo impact, very easily cracked when shaking, and does not have actual application value fully.Publication number is that the mixture that the Chinese patent literature of CN1077483A has been introduced by 80-85% graphite, 3-5% molybdenumdisulphide, 10-15% refinery coke or pitch coke becomes porousness blank skeleton through 1300-2700 ℃ of roasting, copper alloy or Babbitt metal again infiltrate, or infiltration thermoplastic polytetrafluoroethylene's suspension and water glass, or behind the infiltration modified phenolic resins, becoming can be for the solid lubricant for locomotive wheel rim of Various Seasonal use.But can obviously find out again by its described working method, use in the lubricant of infiltration tetrafluoroethylene at it, under 1 hour condition of 400 ℃ of insulation plasticizings, wherein the tetrafluoroethylene that is infiltrated has changed poisonous gas into and overflows and do not existed, and has not promptly had the tetrafluoroethylene composition fully in this lubricant.In addition, its actual lubrication test of making wheel rim at subway is also shown, owing to there are problems such as aspect performances such as the low and shock resistance of physical strength, shearing resistance, resistance to compression are not high equally, thus this material be applicable to the conduction friction pair formed based on the pantograph and the contact system of conduction between the conduction lubricant.Since in the railway locomotive impact acceleration of vehicle spring lower section and rail up to 18g about, therefore as the wheel flange lubricating material of solid type as if not possessing excellent lubricating property and higher physical strength simultaneously, be difficult to have actual use value.
The objective of the invention is at above-mentioned situation, a kind of solid type wheel flange lubricating material that can possess excellent lubricating property and higher physical strength simultaneously is provided, and it has reliable actual use value through evidence.
Solid lubricant of the present invention, form by the component of pressing the row weight part:
Tetrafluoroethylene 38-66
Lubricant 27-51
Enhancing ingredients 8-5
Ancillary component 3-2.5,
Wherein: lubricant is made up of the molybdenumdisulphide/graphite that is 1/ (1.5-2.5) by weight;
Enhancing ingredients is made up of the copper powder/glass fibre that is 1/ (2-4) by weight;
Ancillary component is made up of the antimonous oxide/iron manganese phosphate/plumbous oxide that is 1/ (1.5-2)/(1-1.5) by weight.
Tetrafluoroethylene in the above-mentioned composition is nontoxic under normal operation, tasteless, odorless, high and low temperature resistance is all good, can be in-250 ℃～260 ℃ temperature range life-time service, and have the performance and the insulating property of excellent anti-strong acid, highly basic, strong oxidizer and organic solvent.Its second-order transition temperature is 327 ℃, then decomposites toxic gas more than 400 ℃.It removes because of having excellent lubricating property, very low dynamic and static frictional coefficient is arranged, itself be exactly outside a kind of lubricant of excellence, it also has high-intensity adhesiveproperties simultaneously, it is again a kind of good thermal curing agents, can combine with many other compositions, be the main and important lubricated composition in the lubricant of the present invention.Show that through test when the usage ratio of tetrafluoroethylene in product of the present invention was lower than 30 parts, product was difficult to premolding.In above-mentioned scope, along with the increase of tetrafluoroethylene usage ratio, the physical strength of product also increases thereupon.But after its usage ratio in product was higher than 55 parts, film forming and lubricity promptly had downtrending.Therefore the variation of tetrafluoroethylene consumption has directly and significantly influence the physical strength of product.
Molybdenumdisulphide and graphite are good lubricated compositions known and that widely use, and lubricity are more improved after tetrafluoroethylene cooperates.Add said enhancing ingredients such as copper powder (as bronze powder etc.), glass fibre on this basis, prove the performance of aspects such as the shock resistance that can improve product, shearing, physical strength such as anti-crushing and the capacity of heat transmission.Test-results shows that tetrafluoroethylene and these compositions all have favorable compatibility, when making product have excellent lubricating property, can satisfy again and is used for the necessary ideal physical strength of wheel rim of locomotive.
Reliable and stable for the performance that keeps product, used each material composition can be～0.07 millimeter (200 order) powder of sieving for well by the aperture with particle fineness during preparation.
Even since tetrafluoroethylene when the temperature of its crystallization point of inversion more than 327 ℃, still can only form no crystalloid can not the mobile gel state, so should not take the forming method of thermoplastics when preparing.During the above-mentioned solid lubricant of preparation the present invention, can said each feed composition is even with the dry method or the wet-mixed of routine, in the embedded type die cavity, the premolding of under 20-35MPa pressure, colding pressing, put again in the sintering oven, in 370 ℃ of-380 ℃ of sintering temperature thermofixation moulding products.
What below introduce is specific embodiment as foregoing of the present invention, and with this foregoing of the present invention is further described.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.
Each routine raw material table composed as follows
| Parts by weight of raw materials is formed | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Polytetrafluoroethylene (PTFE) molybdenum bisuphide graphite bronze powder glass fibre antimony oxide iron manganese phosphate lead oxide | 53.1 12.8 25.4 1.5 4.6 0.7 1.1 0.7 | 61.8 10.2 20.4 1.3 4.0 0.5 1.1 0.6 | 41.5 15.7 31.4 2.0 6.2 0.8 1.6 0.9 |
It is 0.074 millimeter (i.e. 200 orders) sieve that each raw material is crossed the aperture, after conventional dry method or wet-mixed are even, the die cavity of packing into, normal temperature slowly pressurizes under 28.5MPa pressure, for example, the formpiston lowering speed can be controlled at the premolding of colding pressing in the scope of 30～50 mm/min.Put then in the hot air circulation sintering oven, after the thermofixation in 3.5～4.5 hours of 370 ℃-380 ℃ following sintering, be cooled to normal temperature and get final product.
The color of described each routine product all is the cloud grey, relevant technical indicator detected value: proportion 2.2-2.5, resistance to impact shock～17.3kgcm/cm
2, tensile strength～158kg/cm
2, bending strength～222kg/cm
2, static friction coefficient 0.08-0.15.
With the product of embodiment 1 by 260 millimeters of Ф, thickness is 32 millimeters, revolution is on the equipment formed of 1450 rev/mins analog machine wheel, is profile that the product of 32 * 20 * 70 (millimeters) is loaded in the box body, by spring-advance and with simulation wheel sliding contact, constitute the lubrication friction simulator of wheel rim of locomotive, carry out the simulation test of wheel flange lubricating friction, testing data and result are as follows:
Analog rate: 71.1 kms/hour, test miles: 5.12 ten thousand kms,
Spring is to the pushing tow pressure of product: 4-4.5 newton,
Product is at the one-tenth membrane stage of wheel rim: chocolate moistens film admittedly,
The consumption of product: 10-15 millimeter/ten thousand kms,
Move the temperature rise at product piece center after 10 hours: 8-12 ℃ (envrionment temperature: 28 ℃).
Above-mentioned laboratory sample of the present invention is contained in the actual motion test of having carried out nearly 600,000 kms on four locomotives again, operational excellence, the effect of lubrication antifriction anti-attrition is remarkable, has confirmed value and reliability of applying that it has practical application.
Claims (5)
1. solid lubricant, form by the component of pressing the row weight part:
Tetrafluoroethylene 38-66
Lubricant 27-51
Enhancing ingredients 8-5
Ancillary component 3-2.5,
Wherein: lubricant is made up of the molybdenumdisulphide/graphite that is 1/ (1.5-2.5) by weight;
Enhancing ingredients is made up of the copper powder/glass fibre that is 1/ (2-4) by weight;
Ancillary component is made up of the antimonous oxide/iron manganese phosphate/plumbous oxide that is 1/ (1.5-2)/(1-1.5) by weight.
2. solid lubricant as claimed in claim 1 is characterized in that the copper powder in the said enhancing ingredients is a bronze powder.
3. solid lubricant as claimed in claim 1 or 2 is characterized in that said each material composition is for passing through the powder of 200 mesh sieves.
4. solid lubricant as claimed in claim 1 or 2 is characterized in that said weight part consists of
Tetrafluoroethylene 38.5
Lubricant 50.2
Enhancing ingredients 8.2
Ancillary component 3.1.
5. solid lubricant as claimed in claim 1 or 2 is characterized in that said weight part consists of
Tetrafluoroethylene 65.5
Lubricant 27.9
Enhancing ingredients 4.1
Ancillary component 2.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117431A CN1078608C (en) | 1999-12-09 | 1999-12-09 | Solid lubricant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99117431A CN1078608C (en) | 1999-12-09 | 1999-12-09 | Solid lubricant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1257909A CN1257909A (en) | 2000-06-28 |
| CN1078608C true CN1078608C (en) | 2002-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99117431A Expired - Fee Related CN1078608C (en) | 1999-12-09 | 1999-12-09 | Solid lubricant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1078608C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357412C (en) * | 2004-11-02 | 2007-12-26 | 江苏大学 | Strengthen type solid lubricating agent with potassium phthalate cristal whisker |
| CN1296466C (en) * | 2004-11-25 | 2007-01-24 | 武汉理工大学 | Solid lubricant for inlaid bearing sleeve on hydraulic generator and method for preparing method |
| CN1304477C (en) * | 2005-09-14 | 2007-03-14 | 南京航空航天大学 | Compound PTFE material with low friction and high wear resistance and its prepn process |
| CN102796601B (en) * | 2012-08-31 | 2014-02-26 | 浙江宝晟铁路新材料科技有限公司 | Composite solid lubricating rod inner layer and preparation method thereof |
| CN103016532A (en) * | 2012-12-03 | 2013-04-03 | 瓦房店科信精密关节轴承有限公司 | Self-lubricating material used for joint bearing and application method of self-lubricating material |
| CN104327928B (en) * | 2014-11-21 | 2016-08-24 | 成都蜀中铁道科技投资有限公司 | Railway locomotive wheel track kollag and preparation method thereof |
| CN104401355B (en) * | 2014-11-21 | 2017-03-29 | 成都蜀中铁道科技投资有限公司 | Railway locomotive wheel track solid stick |
| CN104927991A (en) * | 2015-06-08 | 2015-09-23 | 吕卫东 | Wheel-rail solid lubrication block and preparation method thereof |
| CN106467791B (en) * | 2016-08-30 | 2019-02-26 | 山东建筑大学 | A kind of composite solid lubricant block and preparation method thereof for stone material cutting saw blade |
| CN108659918B (en) * | 2018-06-25 | 2021-10-01 | 河南科技大学 | Gear oil additive, gear lubricating oil, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077483A (en) * | 1993-05-11 | 1993-10-20 | 哈尔滨铁路局哈尔滨科学技术研究所 | Solid lubricant for locomotive wheel rim |
| CN1088964A (en) * | 1992-12-31 | 1994-07-06 | 兰州铁路局科技开发中心 | Solid wheel track, wheel flange lubricating agent |
| CN1108297A (en) * | 1993-11-18 | 1995-09-13 | 湖南娄底地区飞龙高新科技开发公司 | Recipe for new lubricating grease |
-
1999
- 1999-12-09 CN CN99117431A patent/CN1078608C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088964A (en) * | 1992-12-31 | 1994-07-06 | 兰州铁路局科技开发中心 | Solid wheel track, wheel flange lubricating agent |
| CN1077483A (en) * | 1993-05-11 | 1993-10-20 | 哈尔滨铁路局哈尔滨科学技术研究所 | Solid lubricant for locomotive wheel rim |
| CN1108297A (en) * | 1993-11-18 | 1995-09-13 | 湖南娄底地区飞龙高新科技开发公司 | Recipe for new lubricating grease |
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| Publication number | Publication date |
|---|---|
| CN1257909A (en) | 2000-06-28 |
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