CN102732361B - Special gear oil for shield and preparation method thereof - Google Patents
Special gear oil for shield and preparation method thereof Download PDFInfo
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- CN102732361B CN102732361B CN 201210230399 CN201210230399A CN102732361B CN 102732361 B CN102732361 B CN 102732361B CN 201210230399 CN201210230399 CN 201210230399 CN 201210230399 A CN201210230399 A CN 201210230399A CN 102732361 B CN102732361 B CN 102732361B
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Abstract
The invention discloses special gear oil for a shield and a preparation method of the special gear oil. The special gear oil for the shield comprises the following components in percentage by weight: 0.5-1.0% of antioxidant, 1.5-3.0% of extreme pressure anti-wear additive, 1.0-2.0% of oiliness agent, 0.3-0.7% of pour point depressant, 0.1-0.3% of anti-rusting agent, 0.1-0.3% of copper corrosion inhibitor, 100-300ppm of emulsion breaker, 10-40ppm of defoaming agent and the balance of base oil. The wear resistance and the extreme pressure property of a product are obviously improved due to the gear oil, and equipment bearings and gears are obviously better protected. In a shield tunneling process, even if a section with a quite rigid soil texture appears, the torque ripples of the shield bearings and the gears can also be guaranteed to be small, so the stable tunneling of a shield machine is guaranteed.
Description
Technical field
The present invention relates to a kind of lubricating oil, be specifically related to shield structure dedicated gear oil and preparation method thereof.
Background technology
Along with shield excavation machine use extensive gradually, the adaptability of its running stores, particularly oil product and equipment and with the adaptability of environment, be the problem that has optical arena extremely to pay close attention to.
Because large-scale shield excavation machine belongs to heavy construction equipment, its load is big, equipment work pressure height, and the manufacturing accuracy of equipment also requires very strict, therefore requires the higher oilness of having of oil product and extreme pressure property.At present, the product mainly produced by the Mobil company of Britain BP, SHELL and the U.S. of the external employed oil product of shield excavation machine.These products generally all add various additives with the petroleum base base oil and form.
Geartransmission is topmost a kind of type of drive in the machinery, and is extremely wide in modernized application in machine equipments.No matter be the miniature transmitting gear of precision meter, the huge gear that still transmits thousands of myriawatt power is not always the case.Modern machinery equipment industry just develops towards high-load, high efficiency direction.Therefore, supporting capacity and the working conditions to gear proposed harsher requirement.For improving the supporting capacity of gear, reduce the possibility that occurs inefficacy in the working gear process, prolong the working gear life-span, improve the transmission efficiency of gear, lubricated is in the working gear process and important and the key link can think that almost the gear that not have to lubricate can't carry out high loading work.
The stress of gear teeth face contact position is generally all very big, and the stress of some heavy loading gear teeth face contact position is up to 4 * 109Pa.These characteristics make the lubricated of gear be in boundary lubrication and elastic fluid lubricating status, if the lubricant improper use will cause gear scoring, slight crack, cause damage such as wheel tooth sheet fracture when serious.
Compare with the lubricated of other parts, gear lubrication has following characteristics:
1) between the flank of tooth, exist to slide, and direction and the size of sliding is in the middle of the variation, very easily causes wearing and tearing, scratch and glue together, so require oilness also to need extreme pressure property.
2) contact stress of gear is very high, at high contact stress effect lower gear gummed and spot corrosion takes place very easily, therefore requires erosion resistance.
3) foundation of lubricant film is a continuous process, each engagement all need rebulid oil film, in the gear lubrication process, hydrodynamic lubrication, elastic dynamic is lubricated to be existed simultaneously with three kinds of lubricating systems of mixed friction, most of working gear is to be in the mixed friction state, therefore causes wearing and tearing easily, scratch and gummed.
4) lubricating oil viscosity, oilness, extreme pressure property and lubricating system, gear oil supply are all influential to gear failure.
5) distortion of tooth-formation of gear, gear housing and axle; The assembling of the material of gear, heat treating method and gear and setting accuracy etc. influence the lubricated of gear.
Because the special transmission of shield structure gear train and special Working environment have proposed the special performances requirement to gear oil, specifically have:
Viscosity is the important physical and chemical index of gear oil.Also be so for shield structure gear oil, viscosity can satisfy gear greatly and form enough thick oil film under the elastic hydrodynamic lubrication state, the supporting capacity of raising gear, thereby the wearing and tearing of the reduction flank of tooth; If may increase pumping resistance but viscosity is excessive, bring difficulty to lubrication by oil circulation, also increase gear movement and mix resistance, reduce the supply of gear oil, so that cause the gear heating and power waste.In addition, the gear oil that viscosity is big is mobile poor, the oil film that is extruded is in time compensated to repair slow and increase automatically wear and tear.If viscosity is too small, may increase the cycle of gear generation boundary lubrication, influence oil film thickness and loading capacity of oil film, lubricating quality is descended; Thereby the gear oil viscosity must be suitable.
The load that shield structure gear bears is very high, and when making gear transmission load, the flank of tooth can not abrade, weares and teares, glue together, and requires gear oil that good load-carrying properties are arranged.Require to use the heavy loading gear oil that contains strong extreme pressure agent for shield structure gear oil.The extreme-pressure additive of gear oil has at the high temperature friction face and forms chemical reaction film, this film wear-resistant, antiscuffing capacity is very strong, thereby slow down tooth surface abrasion and scratch.Therefore, selecting extreme pressure anti-wear additives for use is the key of shield bucket wheel oil quality quality.
The high-temperature thermal oxidation stability also is one of important performance indexes of shield structure gear oil.On the one hand, contacted with air by the fierceness stirring during gear oil work, add the effect of moisture, impurity and metal in the environment for use, it is oxidized that it is easy to, and produces oxide compound or greasy filth, may impel the gear oil viscosity to increase.And the viscosity increase can make cooling performance and fuel delivery descend.On the other hand, often be under the high-temperature at the gear oil of working under the harsh load-up condition and work, therefore, gear oil is very easy to be oxidized, add that the katalysis of metal is strengthened the oxygenizement of gear oil greatly in the gear train, the use properties of gear oil descends rapidly.Oxide compound also is the reason that causes wearing and tearing, therefore, requires gear oil to have good heat-resistant quality and oxidation stability.
For economizing on resources, guarantee the work-ing life of gear oil in addition, also require gear oil must have the good high-temperature thermal oxidation stability.
Master wheel has strong agitaion in the geartransmission of shield structure, and pinion(gear) has the advantages that running speed is exceedingly fast, therefore gear oil is very easily brought air in the course of the work into, the stirring of the oil pump of another part recycle system, bearing etc. and cross reasons such as low to the pasta that fuel tank refluxes all can make oil product bring air into.These air form a large amount of foams in gear oil, if foam can not very fast disappearance, can spill from ventilation breather because pasta raises; Simultaneously, foam will influence the formation of gear mating surface oil film, influence the lubricant effect of gear oil; Foam can also stop up oil circuit, produces vapour lock, and fuel delivery is reduced, and cooling effect causes that inadequately the gear teeth face temperature raises, and reduces metal strength, reduces loading capacity of oil film, thereby causes the gear teeth face damage.So gear oil should generate fewly by foam, froth breaking is fast, and namely gear oil should have good anti-spumescence.
The corrodibility of shield structure gear oil derives from the acidic substance in the oil, and mineral acid and low molecular organic acids have very strong corrodibility to gear, and is the most responsive to acid attack with non-ferrous metals such as lead, copper and alloy in the metal.Owing to contain extreme-pressure additive in the gear oil, chemically reactive is strong in addition, under the low temperature easily and the metallic surface react and cause corrosion.Gear oil in use can take place to decompose or deterioration by oxidation produces acids and colloid, is easy to generate corrosion and corrosion when particularly contacting with water, so will be added with antirust, anticorrosive agent in the gear oil to improve its antirust, anti-corrosive performance.
Because shield structure gear Chang Jingchang in operation process contacts with water, particularly in the shield driving process, underground water and operating water often are penetrated into the situation of gear train, if its resistance to emulsion can not cause gear oil emulsification by force and produce foam, cause oil film strength to reduce.In addition, contain the oily emulsification of extreme pressure anti-wear additives after, hydrolysis can take place or produce precipitation and lose the extreme pressure effect in extreme pressure agent.Demulsification performance is the important performance indexes of gear oil.
In addition, to other performance requriementss of gear oil also comprise good low-temperature fluidity, shear resistant, with the adaptability of sealing material, stability in storage etc.
At present, existing gear oil, all exist different defectives, as 680 heavy duty industrial gear oils of the BP company of present use, every test data of this gear oil is all good, but in tunneling process, find, run into the harder highway section of soil property, the surging force that shield structure Bearing gear is subjected to is big, and the fluctuation meeting of Bearing gear moment of torsion is very big, have a strong impact on the steady driving of shield structure, had very large potential safety hazard.
Summary of the invention
The purpose of this invention is to provide a kind of shield structure dedicated gear oil and preparation method thereof, to overcome the above-mentioned defective that prior art exists, satisfy the needs of relevant field development.
Shield structure dedicated gear oil of the present invention comprises following components in weight percentage:
Ppm represents 1,000,000/;
Preferably, shield structure dedicated gear oil of the present invention comprises following components in weight percentage:
Described oxidation inhibitor is selected from the mixture of liquid low volatility phenolic antioxidant and butyl octyl pentanoic, and weight ratio is:
Liquid low volatility phenolic antioxidant: butyl octyl pentanoic=1: 1～0.8;
Preferred 2,6 di-t-butyls of described liquid low volatility phenolic antioxidant are to the diethylstilbestrol monooctyl ester; The E4716 oxidation inhibitor of Albemarle Corporation;
Described extreme pressure anti-wear additives is the boron nitride after molybdenum dialkyl-dithiophosphate, thiophosphatephosphorothioate and the surface treatment;
Weight ratio is molybdenum dialkyl-dithiophosphate: thiophosphatephosphorothioate: the boron nitride after the surface treatment=1: 1～2: 1.25～3.25;
Boron nitride after the described surface treatment is carried out the surface-treated boron nitride for adopting two succimide dispersion agents, and particle diameter is 70～100 nanometers, and the surface-treated method is as follows:
With boron nitride and two succimide dispersant, at 60～65 ℃, under preferred 63 ℃, dispersed with stirring 40 ~ 60 minutes preferred 50 minutes, then with the mixture that obtains, with ball mill mill 46～50, preferred 48 hours, can obtain the boron nitride after the surface treatment;
Boron nitride: two succimides=1: 1～2, preferred 1: 1.5, weight ratio;
Two succimides can adopt Europe, Nanjing doubly to restrain the product that company's trade mark is T154.
The product that obtains is the boron nitride after handling with two succimides, does not need to separate, and the particle diameter of this product is 70～100 nanometers;
Described oiliness improver is the mixture of triolein and sulfuration Oleum Gossypii semen, the T404 that sulfuration Oleum Gossypii semen such as Europe, Nanjing doubly restrain;
Triolein: sulfuration Oleum Gossypii semen=1: 0.5～3, weight ratio;
Described pour point depressant is styrene isoprene polymkeric substance and polymethacrylate;
Styrene isoprene polymkeric substance: polymethacrylate=1: 0.75～2.5, weight ratio;
Described rust-preventive agent is selected from dodecenylsuccinic acid half ester or pentaerythritol monooleate;
Described copper corrosion inhibitor is selected from the phosphoric acid ester of amine neutralization, is the product of RC3760 as the Lay mattress chemical company trade mark;
Described emulsion splitter is the polymkeric substance of amine and oxyethane propylene oxide, is the product of T1001 as the Lanzhou Oil Refinery trade mark;
Described defoamer is the low viscosity methyl-silicone oil, preferred 500# methyl-silicone oil;
Described base oil is the mixture of base oil 150BS and base oil 175BS, and viscosity is 41.4～50.6mm2/s, and weight proportion is as follows:
150BS 30~70%，175BS 70~30%；
Described base oil 150BS and 175BS are the general base oil in this area, and its chemical ingredients and physicochemical property can be referring to the product manuals of U.S. ERGON company;
The preparation method of shield structure dedicated gear oil of the present invention is the physical mixed method of routine, and each component is mixed, and can obtain product.
The invention has the beneficial effects as follows fairly obvious; abrasion resistance and the extreme pressure property of product have obviously been improved; protection to equipment bearing and gear is obviously better; this product is in the shield driving process; even run into the adamantine location of soil property; the fluctuation that still can guarantee the moment of torsion of shield structure Bearing gear can be very not big, guaranteed the steady driving of shield engine.
Embodiment
Among the embodiment, each component source is as follows:
Base oil 150BS and 175BS adopt the product of U.S. ERGON.
The preparation method of the boron nitride after the surface treatment:
With boron nitride and two succimide dispersant, under 63 ℃, dispersed with stirring 50 minutes then with the mixture that obtains, with ball mill mill 48 hours, can obtain the boron nitride after the surface treatment;
Boron nitride: two succimides=1: 1.5, weight ratio;
The product that obtains does not need to separate, and this average size of products is 85 nanometers.
Embodiment 1
The preparation method mixes each component, stirs, and can obtain product.
Detected result:
Embodiment 2
Boron nitride after the surface treatment is with embodiment 1.
Detected result
Embodiment 3
Boron nitride after the surface treatment is with embodiment 1.
Prescription:
The preparation method mixes each component, stirs, and can obtain product.
Detected result:
Claims (5)
1. shield structure dedicated gear oil is characterized in that, comprises following components in weight percentage:
Oxidation inhibitor 0.5～1.0%;
Extreme pressure anti-wear additives 1.5～3.0%;
Oiliness improver 1.0～2.0%;
Pour point depressant 0.3～0.7%;
Rust-preventive agent 0.1～0.3%;
Copper corrosion inhibitor 0.1～0.3%;
Emulsion splitter 100～300ppm;
Defoamer 10～40ppm;
The base oil surplus;
Described oxidation inhibitor is selected from the mixture of liquid low volatility phenolic antioxidant and butyl octyl pentanoic;
Described extreme pressure anti-wear additives is the boron nitride after molybdenum dialkyl-dithiophosphate, thiophosphatephosphorothioate and the surface treatment;
Described oiliness improver is the mixture of triolein and sulfuration Oleum Gossypii semen;
Described pour point depressant is styrene isoprene polymkeric substance and polymethacrylate;
Described rust-preventive agent is selected from dodecenylsuccinic acid half ester or pentaerythritol monooleate;
Described copper corrosion inhibitor is selected from the phosphoric acid ester of amine neutralization;
Described emulsion splitter is the polymkeric substance of amine and oxyethane propylene oxide;
Described defoamer is the low viscosity methyl-silicone oil;
Described base oil is the mixture of base oil 150BS and base oil 175BS.
2. shield structure dedicated gear oil according to claim 1 is characterized in that, comprises following components in weight percentage:
Oxidation inhibitor 0.6～0.9%;
Extreme pressure anti-wear additives 2.5～2.8%;
Oiliness improver 1.8～2.0%;
Pour point depressant 0.6～0.7%;
Rust-preventive agent 0.2～0.3%;
Copper corrosion inhibitor 0.2～0.3%;
Emulsion splitter 200～300ppm;
Defoamer 20～25ppm.
3. shield structure dedicated gear oil according to claim 1 is characterized in that, described liquid low volatility phenolic antioxidant is that 2,6 di-t-butyls are to the diethylstilbestrol monooctyl ester.
4. shield structure dedicated gear oil according to claim 1 is characterized in that the weight ratio of liquid low volatility phenolic antioxidant and butyl octyl pentanoic is: liquid low volatility phenolic antioxidant: butyl octyl pentanoic=1: 1～0.8;
The weight ratio of the boron nitride after molybdenum dialkyl-dithiophosphate, thiophosphatephosphorothioate and the surface treatment is molybdenum dialkyl-dithiophosphate: thiophosphatephosphorothioate: the boron nitride after the surface treatment=1: 1～2: 1.25～3.25;
Oiliness improver is the mixture weight ratio of triolein and sulfuration Oleum Gossypii semen: triolein: sulfuration Oleum Gossypii semen=1: 0.5～3;
The weight ratio of styrene isoprene polymkeric substance and polymethacrylate: styrene isoprene polymkeric substance: polymethacrylate=1: 0.75～2.5;
Described defoamer is the 500# methyl-silicone oil;
The weight proportion of the mixture of base oil 150BS and base oil 175BS is as follows: 150BS30～70%, 175BS70～30%.
5. prepare the method for each described shield structure dedicated gear oil of claim 1～4, it is characterized in that, comprise the steps: each component is mixed, stirring gets final product.
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| CN 201210230399 CN102732361B (en) | 2012-07-04 | 2012-07-04 | Special gear oil for shield and preparation method thereof |
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| CN 201210230399 CN102732361B (en) | 2012-07-04 | 2012-07-04 | Special gear oil for shield and preparation method thereof |
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| CN102732361B true CN102732361B (en) | 2013-08-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937590B (en) * | 2014-03-25 | 2015-09-02 | 广州澳润合成材料有限公司 | A kind of tail seal grease of shield for shield engine |
| CN105623787B (en) * | 2014-10-28 | 2018-05-18 | 中国石油化工股份有限公司 | Bearing fluid composition and the method for improving bearing oil performance |
| CN105623785B (en) * | 2014-10-28 | 2018-11-30 | 中国石油化工股份有限公司 | Bearing fluid composition and the method for improving bearing oil performance |
| CN106190435B (en) * | 2016-07-08 | 2019-05-03 | 清华大学天津高端装备研究院 | Quarry tipper heavy-duty gear oil compound additive and its lubricant oil composite |
| CN107805538B (en) * | 2017-11-14 | 2021-03-19 | 陕汽榆林金帝润滑油有限公司 | Special gear oil for enhanced oil pumping unit and preparation method thereof |
| CN112442411B (en) * | 2019-08-29 | 2022-09-13 | 中国石油化工股份有限公司 | Special gear oil composition for mines |
| CN112080333B (en) * | 2020-08-27 | 2022-09-13 | 统一石油化工有限公司 | Long-life manual transmission oil composition |
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|---|---|---|---|---|
| CN101029264A (en) * | 2007-04-03 | 2007-09-05 | 张书达 | Modified gear oil |
| CN101597538A (en) * | 2009-06-30 | 2009-12-09 | 山东卡松石化有限公司 | Ether-ester type synthetic gear oil |
| CN102329679A (en) * | 2011-09-05 | 2012-01-25 | 王琴 | Novel gear lubrication additive |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7932217B2 (en) * | 2007-08-28 | 2011-04-26 | Chevron U.S.A., Inc. | Gear oil compositions, methods of making and using thereof |
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- 2012-07-04 CN CN 201210230399 patent/CN102732361B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029264A (en) * | 2007-04-03 | 2007-09-05 | 张书达 | Modified gear oil |
| CN101597538A (en) * | 2009-06-30 | 2009-12-09 | 山东卡松石化有限公司 | Ether-ester type synthetic gear oil |
| CN102329679A (en) * | 2011-09-05 | 2012-01-25 | 王琴 | Novel gear lubrication additive |
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Owner name: SHANGHAI TUNNEL ENGINEERING CO., LTD. Free format text: FORMER OWNER: SHANGHAI TUNNEL ENGINEERING CO LTD Effective date: 20150119 |
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Effective date of registration: 20150119 Address after: 200050, room 2, building 35, No. 201 Ann West Road, Shanghai, Changning District Patentee after: Shanghai Hiri Lubricants Technology Co., Ltd. Patentee after: SHANGHAI TUNNEL ENGINEERING CO., LTD. Address before: 200050, room 2, building 35, No. 201 Ann West Road, Shanghai, Changning District Patentee before: Shanghai Hiri Lubricants Technology Co., Ltd. Patentee before: Shanghai Tunnel Engineering Co., Ltd. |