CN109082334A - A kind of polynary biphase antifriction stick and preparation method - Google Patents
A kind of polynary biphase antifriction stick and preparation method Download PDFInfo
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- CN109082334A CN109082334A CN201810899350.4A CN201810899350A CN109082334A CN 109082334 A CN109082334 A CN 109082334A CN 201810899350 A CN201810899350 A CN 201810899350A CN 109082334 A CN109082334 A CN 109082334A
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- parts
- antifriction
- lubrication
- biphase
- polynary
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/05—Metals; Alloys
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/01—Emulsions, colloids, or micelles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of polynary biphase antifriction stick and preparation methods, the polynary biphase antifriction stick is repaired component by substrate component, lubrication component and lubrication and is prepared, according to parts by weight, the substrate component includes: 30 ~ 40 parts of resins, 25 ~ 35 parts of rubber, 1 ~ 5 part of coupling agent, 1 ~ 20 part of carbon fiber；The lubrication component includes: 5 ~ 20 parts of polytetrafluoroethylene (PTFE), 30 ~ 50 parts of graphite, 20 ~ 35 parts of sulfide；The lubrication repairs nano-metal particle, 30 ~ 40 parts of Nano semiconductor particle and 1 ~ 10 part of stabilizer that component includes: 30 ~ 55 parts.The antifriction stick of the embodiment of the present invention has the advantages that solid lubrication and hydrodynamic lubrication simultaneously, and wheel rim can be made still to be able to maintain low-friction coefficient under high-load condition.
Description
Technical field
The present invention relates to solid lubricant technical field, more particularly, to a kind of polynary biphase antifriction stick and
Preparation method.
Background technique
Wheel rim of locomotive is lubricated with solid-state antifriction stick and refers to original liquid lubricant is changed to solid lubrication material
Material, such as antifriction stick.Using corresponding holding device, withstands on antifriction stick on the inside of wheel rim of locomotive, must rub by wheel rim and lubricating rod
Make lubricating rod that must lubricate component and be uniformly distributed in wheel rim, obtains contact surface between wheel rim and rail to lubricate, reduce the effect of abrasion
Fruit.For relative liquid lubricant, the compressive property of solid lubricant is stronger, and lubricant effect is more preferable.Currently, existing antifriction
Stick friction reducing effect is poor, and wheel rim surface abrasion is more serious.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of polynary biphase antifriction stick and preparation methods.
In order to achieve the above objectives, the invention adopts the following technical scheme:
The embodiment of the invention provides a kind of polynary biphase antifriction sticks, by substrate component, lubrication component and lubrication reparation group
It part is prepared, according to parts by weight, the substrate component includes: 30 ~ 40 parts of resins, 25 ~ 35 parts of rubber, 1 ~ 5 part of coupling agent,
1 ~ 20 part of carbon fiber；The lubrication component includes: 5 ~ 20 parts of polytetrafluoroethylene (PTFE), 30 ~ 50 parts of graphite, 20 ~ 35 parts of sulfide；It is described
Lubrication repairs the nano-metal particle, 30 ~ 40 parts of Nano semiconductor particle and 1 ~ 10 part of stabilization that component includes: 30 ~ 55 parts
Agent.
In above scheme, the partial size of the nano-metal particle and the Nano semiconductor particle is 5-50nm.
In above scheme, the nano-metal particle is oil-soluble dispersed nano metallic particles.
In above scheme, the stabilizer is organic phosphine.
In above scheme, the organic phosphine is trioctylphosphine phosphorus or triphenyl phosphorus.
In above scheme, the resin is the mixture of melamine phenol-formaldehyde resin modified and boronation modified resin.
In above scheme, the rubber is the mixture for emulsifying nitrile rubber and vulcanizing butadiene-styrene rubber.
In above scheme, the substrate component further includes styrene or/and pore-foaming agent.
In above scheme, the sulfide is copper sulfide or/and artificial gold.
The embodiment of the invention also provides a kind of methods for preparing above-mentioned polynary biphase antifriction stick, comprising steps of
S10, nano-metal particle, Nano semiconductor particle and the stabilizer in the lubrication reparation component are stirred evenly；
S20, the substrate component and lubrication reparation component are uniformly mixed at 110 ~ 350 DEG C；
S30, the lubrication component is added, and stirs 10 ~ 20min at 110 ~ 350 DEG C, obtain composite material；
S40, the composite material is injected in mold, hot briquetting.
The embodiment of the invention provides a kind of polynary biphase antifriction stick, antifriction stick has solid lubrication and liquid simultaneously
The advantages of lubrication, with the rotation of wheel, antifriction stick can be contacted with wheel, and the Lubrication Composition in anti-attrition stick can be with wheel
Wheel rim surface metal bonding, and one layer of adhesive film is formed in metal surface, which rolls with wheel track by wheel and sharply rises
Temperature rubs, and generates chemical reaction, so that the adhesive film is further formed the higher the compound lubricating film of stability, this is compound
The metal surface of lubricating film and wheel rim is by chemical bonds, even if being still able to maintain low-friction coefficient under high-load condition.
Specific embodiment
The invention will be further described combined with specific embodiments below.Following embodiment is only used for clearly illustrating
Technical solution of the present invention, and not intended to limit the protection scope of the present invention.
First aspect present invention embodiment provides a kind of polynary biphase antifriction stick, by substrate component, lubrication component
Component is repaired with lubrication to be prepared, according to parts by weight, the substrate component includes: 30 ~ 40 parts of resins, 25 ~ 35 parts of rubber,
1 ~ 5 part of coupling agent, 1 ~ 20 part of carbon fiber；The lubrication component includes: 5 ~ 20 parts of polytetrafluoroethylene (PTFE), 30 ~ 50 parts of graphite, and 20 ~ 35
Part sulfide；The lubrication repair component include: 30 ~ 55 parts of nano-metal particle, 30 ~ 40 parts of Nano semiconductor particle and
1 ~ 10 part of stabilizer.
The antifriction stick of the embodiment of the present invention can reduce wheel wear, wheel spalling chip off-falling caused by can avoid because of oiling；
Derailment coefficients can be reduced, running resistance is reduced, reduce energy consumption.Wherein, nano metal can be deposited on metal rim surface and go out
The part now worn, and alloy is formed in conjunction with wear interface under extruding condition, to generate continuous soft metal film.One
Aspect has repaired wearing terrain, on the other hand reduces friction.
In some preferred embodiments of the present invention, the partial size of the nano-metal particle and the Nano semiconductor particle
For 5-50nm.
In other preferred embodiments of the invention, the nano-metal particle is oil-soluble dispersed nano metal
Grain.
Specifically, nano-metal particle includes but is not limited to nanometer tin, Nanometer Copper, nano silver, Nano-Zinc etc., and nanometer is partly led
Body particle includes but is not limited to nano-titanium dioxide, nano aluminium oxide, nano-zinc sulfide etc..Oil-soluble dispersed nano metal
Grain can be produced using reduction method, or be produced using other methods known in the art, such as application No. is
201110398091.5 Chinese patent in record method production.
Some preferred embodiments according to the present invention, the stabilizer are organic phosphine.Specifically, the organic phosphine include but
It is not limited to trioctylphosphine phosphorus or triphenyl phosphorus.
The organic phosphorous stabilizers of P coordination can control and stablize the size point of nano-metal particle and Nano semiconductor particle
Cloth further increases properties of product in relatively narrow range.
In some preferred embodiments of the present invention, the resin is melamine phenol-formaldehyde resin modified and the modified tree of boronation
The mixture of rouge.
In other preferred embodiments of the invention, the rubber is to emulsify nitrile rubber and vulcanize the mixed of butadiene-styrene rubber
Close object.
In other preferred embodiments of the invention, the substrate component further includes styrene or/and pore-foaming agent.
Specifically, pore-foaming agent can choose solid paraffin, butyl ether, butanol, amylalcohol, hexanol, 12 carbon alkanols etc..
In the other preferred embodiment of the present invention, the sulfide is copper sulfide or/and artificial gold.
Second aspect of the present invention embodiment provides a kind of method for preparing above-mentioned polynary biphase antifriction stick, including step
It is rapid:
S10, nano-metal particle, Nano semiconductor particle and the stabilizer in the lubrication reparation component are stirred evenly；It is excellent
Selection of land, when preparation lubrication repairs component, whipping temp is no more than 10 DEG C.
S20, the substrate component and lubrication reparation component are uniformly mixed at 110 ~ 350 DEG C；
S30, the lubrication component is added, and stirs 10 ~ 20min at 110 ~ 350 DEG C, obtain composite material；
S40, the composite material is injected in mold, hot briquetting.
In the embodiment of the present invention, lubrication component and lubrication reparation component are semisolid, and substrate component is capable of forming solid
Network structure or porous structure, and then emollient component and lubrication are repaired into component and coated, there is multi-component two-phase to coexist
The characteristics of.
The present invention is further illustrated combined with specific embodiments below, it is to be understood that the present invention is not limited to
Following embodiment:
Embodiment one
35g parts of resins, 25g parts of rubber are taken, 2g parts of coupling agents, 10g parts of carbon fibers are uniformly mixed at 60 DEG C, form base
Material component.12g polytetrafluoroethylene (PTFE), 35g parts of graphite are taken, 25g parts of sulfide stir evenly under room temperature (20 ~ 30 DEG C), form profit
Sliding component.The triphenyl phosphorus of 30g parts of nano-metal particle, 30g parts of Nano semiconductor particle and 1g is taken to be no more than 10 DEG C
At a temperature of stir evenly, formed lubrication repair component.Above-mentioned substrate component and lubrication reparation component are stirred at 110 DEG C mixed
It closes uniform；Then lubrication component is added, stirs 10min at 110 DEG C, obtains composite material；Finally the composite material is injected
In bar molds, hot briquetting forms antifriction stick after dry cooling.
Embodiment two
40g resin, 35g rubber are taken, 3g coupling agent, 20g carbon fiber are uniformly mixed at 70 DEG C, form substrate component.It takes
20g polytetrafluoroethylene (PTFE), 45g graphite, 30g sulfide stir evenly under room temperature (20 ~ 30 DEG C), form lubrication component.Take 55g
Nano-metal particle, 40g Nano semiconductor particle and 8g triphenyl phosphorus no more than 10 DEG C at a temperature of stir evenly,
It forms lubrication and repairs component.Above-mentioned substrate component and lubrication are repaired component to be uniformly mixed at 180 DEG C；Then profit is added
Sliding component, stirs 10min at 180 DEG C, obtains composite material；Finally the composite material is injected in bar molds, is heated into
Type forms antifriction stick after dry cooling.
Embodiment three
40g resin, 29g rubber are taken, 1g coupling agent, 5g carbon fiber, 1g styrene are uniformly mixed at 70 DEG C, form base
Material component.15g polytetrafluoroethylene (PTFE), 50g graphite are taken, 35g sulfide stirs evenly under room temperature (20 ~ 30 DEG C), forms lubrication group
Part.Take the triphenyl phosphorus of the nano-metal particle of 35g, the Nano semiconductor particle of 40g and 4g no more than 10 DEG C at a temperature of
It stirs evenly, forms lubrication and repair component.Above-mentioned substrate component and lubrication are repaired component to be uniformly mixed at 200 DEG C；
Then lubrication component is added, stirs 15min at 200 DEG C, obtains composite material；The composite material is finally injected into bar molds
In, hot briquetting forms antifriction stick after dry cooling.
Embodiment 4
Take 38g resin, 32g parts of rubber, 1g coupling agent, 10g carbon fiber, 5g butanol is uniformly mixed at 80 DEG C, forms base
Material component.16g polytetrafluoroethylene (PTFE), 45g graphite are taken, 29g sulfide stirs evenly under room temperature (20 ~ 30 DEG C), forms lubrication group
Part.Take the triphenyl phosphorus of 55g nano-metal particle, the Nano semiconductor particle of 40g and 9g no more than 10 DEG C at a temperature of stir
It mixes uniformly, forms lubrication and repair component.Above-mentioned substrate component and lubrication are repaired component to be uniformly mixed at 200 DEG C；So
Lubrication component is added afterwards, stirs 10min at 200 DEG C, obtains composite material；The composite material is finally injected into bar molds
In, hot briquetting forms antifriction stick after dry cooling.
As a result it tests:
Collaborative experiment test is carried out with scientific and technical research institute of Shenyang Railway Bureau, by existing product and embodiment one to embodiment
Four antifriction stick is applied respectively on the train of the same terms, each product chose 5 amount goods trains, by operation in 1 year
Test, the antifriction stick of embodiment one to example IV mutually cut with scissors existing product, and average friction reducing effect improves 30%, are shown in Table 1.
The comparison of 1 friction reducing effect of table
The above is only a preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of polynary biphase antifriction stick, which is characterized in that repair component preparation by substrate component, lubrication component and lubrication
It forms, according to parts by weight, the substrate component includes: 30 ~ 40 parts of resins, 25 ~ 35 parts of rubber, 1 ~ 5 part of coupling agent, 1 ~ 20 part
Carbon fiber；The lubrication component includes: 5 ~ 20 parts of polytetrafluoroethylene (PTFE), 30 ~ 50 parts of graphite, 20 ~ 35 parts of sulfide；The lubrication is repaired
Multiple component includes: 30 ~ 55 parts of nano-metal particle, 30 ~ 40 parts of Nano semiconductor particle and 1 ~ 10 part of stabilizer.
2. polynary biphase antifriction stick according to claim 1, which is characterized in that the nano-metal particle and described
The partial size of Nano semiconductor particle is 5-50nm.
3. polynary biphase antifriction stick according to claim 1, which is characterized in that the nano-metal particle is that oil is molten
Property dispersed nano metallic particles.
4. polynary biphase antifriction stick according to claim 1, which is characterized in that the stabilizer is organic phosphine.
5. polynary biphase antifriction stick according to claim 4, which is characterized in that the organic phosphine be trioctylphosphine phosphorus or
Triphenyl phosphorus.
6. polynary biphase antifriction stick according to claim 1, which is characterized in that the resin is modified for melamine
The mixture of phenolic resin and boronation modified resin.
7. polynary biphase antifriction stick according to claim 1, which is characterized in that the rubber is emulsification nitrile rubber
With the mixture of vulcanization butadiene-styrene rubber.
8. polynary biphase antifriction stick according to claim 1, which is characterized in that the substrate component further includes benzene second
Alkene or/and pore-foaming agent.
9. polynary biphase antifriction stick according to claim 1, which is characterized in that the sulfide be copper sulfide or/
And artificial gold.
10. the method for preparing the described in any item polynary biphase antifriction sticks of claim 1 to 9, which is characterized in that including step
It is rapid:
S10, nano-metal particle, Nano semiconductor particle and the stabilizer in the lubrication reparation component are stirred evenly；
S20, the substrate component and lubrication reparation component are uniformly mixed at 110 ~ 350 DEG C；
S30, the lubrication component is added, and stirs 10 ~ 20min at 110 ~ 350 DEG C, obtain composite material；
S40, the composite material is injected in mold, hot briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899350.4A CN109082334A (en) | 2018-08-08 | 2018-08-08 | A kind of polynary biphase antifriction stick and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810899350.4A CN109082334A (en) | 2018-08-08 | 2018-08-08 | A kind of polynary biphase antifriction stick and preparation method |
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| Publication Number | Publication Date |
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| CN109082334A true CN109082334A (en) | 2018-12-25 |
Family
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| CN201810899350.4A Pending CN109082334A (en) | 2018-08-08 | 2018-08-08 | A kind of polynary biphase antifriction stick and preparation method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179277A (en) * | 1991-12-27 | 1993-07-20 | Kurashiki Kako Co Ltd | Sliding member and sliding bush |
| WO2005037966A1 (en) * | 2003-10-15 | 2005-04-28 | Ashland Inc. | Shock absorber fluid composition containing nanostuctures |
| CN101100624A (en) * | 2007-07-18 | 2008-01-09 | 深圳先进技术研究院 | Additive for lubricating oil and preparation method thereof |
| CN101758834A (en) * | 2010-02-05 | 2010-06-30 | 北京西屋华夏技术有限公司 | Wheel flange lubricating rod |
| CN102635630A (en) * | 2012-04-20 | 2012-08-15 | 天津大学 | Self-lubricating bearing for hydraulic steel gate |
| CN103160369A (en) * | 2013-03-29 | 2013-06-19 | 哈尔滨工业大学 | Self-repairing compound titanium-based grease and preparation method thereof |
| CN106701275A (en) * | 2016-12-08 | 2017-05-24 | 高天峰 | Railway vehicle wheel flange lubrication dry-type continuous lubricating rod |
-
2018
- 2018-08-08 CN CN201810899350.4A patent/CN109082334A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179277A (en) * | 1991-12-27 | 1993-07-20 | Kurashiki Kako Co Ltd | Sliding member and sliding bush |
| WO2005037966A1 (en) * | 2003-10-15 | 2005-04-28 | Ashland Inc. | Shock absorber fluid composition containing nanostuctures |
| CN101100624A (en) * | 2007-07-18 | 2008-01-09 | 深圳先进技术研究院 | Additive for lubricating oil and preparation method thereof |
| CN101758834A (en) * | 2010-02-05 | 2010-06-30 | 北京西屋华夏技术有限公司 | Wheel flange lubricating rod |
| CN102635630A (en) * | 2012-04-20 | 2012-08-15 | 天津大学 | Self-lubricating bearing for hydraulic steel gate |
| CN103160369A (en) * | 2013-03-29 | 2013-06-19 | 哈尔滨工业大学 | Self-repairing compound titanium-based grease and preparation method thereof |
| CN106701275A (en) * | 2016-12-08 | 2017-05-24 | 高天峰 | Railway vehicle wheel flange lubrication dry-type continuous lubricating rod |
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Application publication date: 20181225 |