CN102199472A - Lubricating oil and preparation method thereof - Google Patents
Lubricating oil and preparation method thereof Download PDFInfo
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- CN102199472A CN102199472A CN2010101328388A CN201010132838A CN102199472A CN 102199472 A CN102199472 A CN 102199472A CN 2010101328388 A CN2010101328388 A CN 2010101328388A CN 201010132838 A CN201010132838 A CN 201010132838A CN 102199472 A CN102199472 A CN 102199472A
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Abstract
The invention relates to a lubricating oil and a preparation method thereof and is characterized in that the lubricating oil is mixed by 0.1-1wt% of fatty acid ester and 99-99.9wt% of fatty group solvent, wherein the fatty acid ester is mixed by beeswax and paraffin, and fatty group solvent is a mixture of two or more solvents selected from a group of gasoline, industrial alcohol, 120# solvent, 200# solvent, cyclohexane, petroleum ether, absolute ethanol or xylene. The lubricating oil of the present invention has a premium lubricity and coating uniformity, a simple preparation method which is easy for operation, and a low price. In addition, coating the lubricating oil on an enamelled wire leaves no peculiar smell, so as to solve problem of ugly peculiar smell.
Description
Technical field:
The present invention relates to the technical field of lubricating oil, specifically a kind of lubricating oil and compound method thereof that is applied in the enameled wire surface.
Background technology:
In recent years, the electrical equipment and electrical production is in order to improve material use efficiency, reduce materials consumption, improve the coiling speed of coil, reduce the volume of motor and electric apparatus coil, requirement is used to have the enameled wire of excellent surface lubrication performance and wear resisting property, and can be adapted to coiling under high speed, high strength, exacting terms in the coil of electrical equipment or electronics such as electric motor and transformer.Particularly to comply with the requirement of the raising motor efficiency of energy-conservation trend proposition of 21 century, must further improve the lubricity and the wear resisting property on surface, the every performance of guaranteeing to turn to behind the coil of product reaches design requirements, can satisfy the requirement of raising output and economic benefit and raising product qualified rate simultaneously.
Though previously used lubricating oil makes enameled wire have certain oilness, in use has many problems.Have volatile, unpleasant peculiar smell, poorly soluble, frictional coefficient is unstable and can not satisfy client's service requirements and shortcoming such as price comparison is expensive.
Solvability is bad, this phenomenon particularly when temperature below 10 ℃ the time, the wax that modulates can precipitate, and separates out easily during coating, piles up, make enameled wire in process of production the coated weight of wax be difficult to control, cause the frictional coefficient instability.Long-pending wax when the client winds the line, occurs, stop up through wires hole, break easily and abrade enameled wire surface paint film, influence the ordinary production of mass of coil and factory.
Particularly gasoline lubricating oil can give out unpleasant peculiar smell in use in season in winter, directly influences workshop condition and production efficiency.
Summary of the invention:
The object of the present invention is to provide a kind of improved lubricating oil and compound method thereof that is applied in the enameled wire surface, it can overcome bad, volatile, the unpleasant peculiar smell of solvability in the prior art, poorly soluble, frictional coefficient is unstable and can not satisfy client's service requirements and the expensive some shortcomings of price comparison.
To achieve these goals, technical scheme of the present invention is: a kind of lubricating oil, it is characterized in that: described lubricating oil is that the fatty acid ester of 0.1-1% and the aliphatic solvent of 99-99.9% mix by weight percent, fatty acid ester described here is mixed by beeswax and paraffin, and aliphatic solvent adopts two or more mixture of gasoline, industrial spirit, 120# solvent, 200# solvent, hexanaphthene, sherwood oil, dehydrated alcohol or these solvents of dimethylbenzene.
A kind of preparation method of lubricating oil, it is characterized in that: described lubricating oil preparation method comprises the steps: a, take by weighing weight percent is that the fatty acid ester of 0.1-1% is put into the anti-still of heating attached middle school, and reactor is heated to 60～70 ℃, fatty acid ester is fully melted; B, take by weighing the aliphatic solvent that weight percent is 99-99.9%, add the aliphatic solvent of 3～5 times fatty acid ester weight in the fatty acid ester solution in a step and be stirred to even no colloidal, with this understanding, with the aliphatic solvent of pump adding residuals weight, be stirred well to dissolving fully; C, the lubricating oil that configures is transferred in the clean oil drum that seals of band sealed storage.
During use, lubricating oil of the present invention has stronger versatility, and copper, the aluminium enamel-covered wire that can satisfy different size and kind use; Solvability concentration of lubricating oil good, that modulate is even, and long-time placement does not have precipitation and separates out, and 50 degree above freezing are spent and can normally be used to subzero 10; Respond well, the no visible residue in liquid components volatilization back, and, meet the ROHS instruction to the no destruction of insulation.Lubricating oil applies evenly, the enameled wire smooth surface, and closely and neat, unwrapping wire was smooth and easy when the user wound the line for winding displacement.Frictional coefficient is little, and static friction coefficient is between 0.050～0.060; Cheap, the solvent price is lower than gasoline or other like products, and the lubricating oil volatile quantity reduces, and the unit enameled wire also greatly reduces with oil mass, reduces use cost, for company brings considerable economic.
Description of drawings:
Fig. 1 is the user mode reference drawing of lubricating oil of the present invention
Embodiment:
The invention will be further described below in conjunction with drawings and Examples.
A kind of lubricating oil of the present invention, its difference with the prior art is: described lubricating oil is that the fatty acid ester of 0.1-1% and the aliphatic solvent of 99-99.9% mix by weight percent, fatty acid ester described here is mixed by beeswax and paraffin, and aliphatic solvent adopts two or more mixture of gasoline, industrial spirit, 120# solvent, 200# solvent, hexanaphthene, sherwood oil, dehydrated alcohol or these solvents of dimethylbenzene.The ratio of mixture of beeswax and paraffin is 1: 1.Aliphatic solvent is that the 120# solvent of 20-60% and the sherwood oil of 40-80% mix by weight percent.Wherein, the 120# solvent, 200# is molten and the sherwood oil agent is prior art, the happy high post chemical industry company limited buying from Shanghai, and paraffin and beeswax are from the buying of Shanghai China Shen rehabilitation material company limited.
A kind of preparation method of lubricating oil, it is characterized in that: described lubricating oil preparation method comprises the steps: a, take by weighing weight percent is that the fatty acid ester of 0.1-1% is put into the anti-still of heating attached middle school, and reactor is heated to 60～70 ℃, fatty acid ester is fully melted; B, take by weighing the aliphatic solvent that weight percent is 99-99.9%, add the aliphatic solvent of 3～5 times fatty acid ester weight in the fatty acid ester solution in a step and be stirred to even no colloidal, with this understanding, with the aliphatic solvent of pump adding residuals weight, be stirred well to dissolving fully; C, the lubricating oil that configures is transferred in the clean oil drum that seals of band sealed storage.In a step, reactor adopts oil bath or heating in water bath, and fatty acid ester can adopt one or more the mixture in the following material: carnauba wax, beeswax, paraffin and montanin wax.Fatty acid ester can be that 50% beeswax and 50% paraffin mix by weight percent also.In the b step, aliphatic solvent is that the 120# solvent of 20-60% and the sherwood oil of 40-80% mix by weight percent.
Fatty acid ester is to add a kind of natural beeswax in paraffin in the lubricating oil of the present invention, forms according to 1: 1 mixed.Beeswax has flexibility, and particle is tiny; The solvability excellence is dissolved in the aliphatic solvent easily; Has good oilness; Paraffin has excellent oilness; But it is hard, crisp to compare beeswax; Particle is thick; Characteristic such as poorly soluble.Just because of comprehensive the two advantage, both are mixed according to a certain percentage, improve the performance of the each side of lubricating oil.
By carry out many group experiments according to paraffin and beeswax different ratios, effect is analyzed by experiment, and finally definite paraffin and beeswax are that 1: 1 ratio is best proportioning.When being lower than or during greater than 1: 1 proportioning, lubricity and wear resisting property all descend to some extent.When not adding beeswax, in use, find that felt and guide wheel are easy to pile up wax, it is inhomogeneous to cause lubricating oil to be coated with compress.The felt that newly changes is general to use an order of classes or grades at school just to pile up a lot of waxes, and after adding beeswax, has obviously improved this situation, a general week of felt only needs to change once, and does not influence lubricant effect, and the lubricating oil coating evenly, alleviate labor strength, also reduce company's use cost simultaneously.With the 0.400mm enamel insulated aluminium wire is example: as following table 1
| The lubricant proportioning | The enameled wire model | Specification/mm | Static friction coefficient | Mean value | Standard deviation |
| Beeswax: paraffin=0: 1 | Q(ZY/XY)-2/ 220AL | 0.400 | 0.089、0.097、0.091、 0.082、0.089 | 0.0896 | 0.0048 00 |
| Beeswax: paraffin=1: 1 | Q(ZY/XY)-2/ 220AL | 0.400 | 0.070、0.076、0.065、 0.081、0.080 | 0.0744 | 0.0038 26 |
| Beeswax: paraffin=1: 0 | Q(ZY/XY)-2/ 220AL | 0.400 | 0.092、0.095、0.091、 0.088、0.096 | 0.0904 | 0.0050 83 |
Data can obviously be found out from table, and adding behind the beeswax certain proportion frictional coefficient has obviously and reduce.
The employed aliphatic solvent of lubricating oil of the present invention, we screen from the following aspects
1, selected solvent must have good consistency with paraffin and beeswax
2, the necessary volatility of selected solvent is moderate
3, selected solvent must not have specific peculiar smell
4, selected solvent price is considered economical and practical.
In order to satisfy above four conditions, we are paraffin and beeswax. and be placed in the following solvent and test, solvent has gasoline, industrial spirit, 120# solvent, 200# solvent, hexanaphthene, sherwood oil, dehydrated alcohol, dimethylbenzene etc.After test, filter out 120# solvent/hexanaphthene, three kinds of solvents of sherwood oil, solvability is good, does not have characteristics such as residual peculiar smell.By price comparison, because hexanaphthene price height, the fast deficiency that waits of volatilization through overtesting, finally determines to select for use the mixed solvent 120# solvent and the sherwood oil that meet above four conditions.
Like product before is a certain solvent of single use, causes lubricating oil poorly soluble, especially at temperature below 10 ℃, lubricating oil easily precipitates; Lubricating oil is in the fast or slow problem of use volatilization, and volatilization causes a large amount of solvents to vapor away in vain soon, is a kind of wasting of resources, and separates out wax easily; Volatilization is slow, and often in the take-up process, solvent not volatilization cause the residual peculiar smell of enameled wire, and it is inhomogeneous to be coated with compress fully.Like product weak point before the used mixed solvent of lubricating oil of the present invention is just remedying.Sherwood oil has good solvability, can with paraffin and any mixing of beeswax; Zero pour is low, can be subzero 10 ℃ of normal use, and lubricating oil does not precipitate, and does not have wax precipitation yet; But it is volatile; The 120# solvent oil has certain oilness and insulativity; Volatilization waits characteristics slowly than sherwood oil; And two kinds of solvent prices are all cheap than other solvents.Select these two kinds of solvents to utilize the two advantage complementation just, solve lubricating oil, also solve the problem of the residual peculiar smell of lubricating oil, also reduce cost simultaneously in the fast or slow problem of use volatilization.
Lubricating oil of the present invention has the following advantages:
1. have excellent lubrication, coating is evenly.
2. compound method is simple, easy handling, and low price.
3. after enameled wire applies lubricating oil, can residual peculiar smell, solve unpleasant peculiar smell problem.
Lubricating oil starting material and compound method are as follows:
Starting material: fatty acid ester (paraffin and beeswax respectively account for 50%), aliphatic solvent (sherwood oil and 120# solvent respectively account for 50%).Paraffin (Shanghai China Shen rehabilitation material company limited produces): the water white transparency solid, fusing point: 58～62 ℃ water insoluble, is slightly soluble in alcohols.Beeswax (Shanghai China Shen rehabilitation material company limited produces): little yellow, water insoluble, be slightly soluble in alcohols.Fusing point: 62～72 ℃.
Sherwood oil (the happy high post chemical industry in Shanghai company limited product): main component: pentane, hexane.Outward appearance and proterties: colourless transparent liquid has the kerosene smell.Fusing point＜-73 ℃, boiling range 90-120 ℃.Solvability: water insoluble, be dissolved in most organic solvents such as dehydrated alcohol, oils.Main application: mainly use as solvent and as greasy extracting.
120# solvent (the happy high post chemical industry in Shanghai company limited product): with oil field high-quality lighter hydrocarbons is raw material, the employing continuous rectificating technique produces, and its major ingredient has normal heptane, isoheptane and suberane, also contains a spot of octane and hexane, normal temperature and pressure is down for liquid, and is inflammable volatile.Industry heptane specification symbols standard Q/DYJH 004-2001 is specific as follows:
Outward appearance: as clear as crystal liquid
Boiling range: initial boiling point ℃ 〉=80,98% recovered temperatures≤120
Density (20 ℃) 705～725kg/m
3
Sulphur content (m/m) %≤0.050
Spot test for fat: qualified
The 120# solvent is mainly used in rubber industry, shoe-making industry, and various tackiness agents are modulated in the comprehensive utilization of reclaimed rubber.This product is colourless transparent liquid, and is inflammable, volatile, do not contain tetraethyllead, and sulphur content is low, is a kind of broad-spectrum organic solvent.
Compound method:
1. equipment: reacting by heating still (oil bath or heating in water bath), pump, clean oil drum to be installed, fire control equipment.
2. all size proportioning:
Table 2
| Specification | Fatty acid ester | Aliphatic solvent | Ultimate density |
| 0.100～0.5 00 | 0.15％～0.2 5％ | 99.85％～99. 75％ | 0.20％ |
| 0.500～1.0 00 | 0.30％～0.4 0％ | 99.70％～99. 60％ | 0.35％ |
| 1.000 more than | 0.45％～0.5 5％ | 99.55％～99. 45％ | 0.50％ |
3. process for preparation:
A. according to the proportioning of table 2, take by weighing 0.2% fatty acid ester and put in the reacting by heating still, and reactor is heated to 60～70 ℃, lubricant is fully melted;
B. take by weighing weight percent and be 99.8% aliphatic solvent, add the aliphatic solvent of 3 times fatty acid ester weight in the fatty acid ester solution in a step and be stirred to even no colloidal, with this understanding, with the aliphatic solvent of pump adding residuals weight, be stirred well to dissolving fully;
C. the lubricating oil that configures is transferred to and is with in the clean oil drum that seals sealed storage.
4. precaution
A. solvent for use is combustible and explosive articles
B. Fire Hazard Area safety and inherently safe
C. modulation is on-the-spot must enough security against fire facilities
5. using method:
During use, generally use felt before the enameled wire take-up, to apply and get final product.
Lubricating oil after making is through testing the comparison that is lubricated effect with outsourcing lubricating oil, and concrete outcome sees table (table 3):
Table 3
| Project name | Specification | Model | Ride | Frictional coefficient |
| Outsourcing lubricating oil | 0.75 0 | Q(ZY/XY)-2/2 20AL | Q-16 | 0.085、0.093、0.083、0.099、 0.070 |
| Lubricating oil of the present invention | 0.75 0 | Q(ZY/XY)-2/2 20AL | Q-16 | 0.057、0.052、0.049、0.050、 0.053 |
| Outsourcing lubricating oil | 1.05 0 | Q(ZY/XY)-2/2 20AL | Q-16 | 0.088、0.066、0.082、0.078、 0.090 |
| Lubricating oil of the present invention | 1.05 0 | Q(ZY/XY)-2/2 20AL | Q-16 | 0.045、0.066、0.065、0.044、 0.041 |
| Outsourcing lubricating oil | 0.26 5 | Q(ZY/XY)-2/2 20 | Q-32 | 0.079、0.080、0.073、0.078、 0.075 |
| Lubricating oil of the present invention | 0.26 5 | Q(ZY/XY)-2/2 20 | Q-32 | 0.052、0.059、0.060、0.065、 0.062 |
The lubricating oil preparation method comprises the steps: starting material: fatty acid ester (paraffin and beeswax respectively account for 50%), aliphatic solvent (sherwood oil 40% and 120# solvent respectively account for 60%) a, to take by weighing weight percent be that 0.3% fatty acid ester is put into the anti-still of heating attached middle school, and reactor is heated to 70 ℃, fatty acid ester is fully melted; B, to take by weighing weight percent be 99.7% aliphatic solvent, add the aliphatic solvent of 5 times fatty acid ester weight in the fatty acid ester solution in a step and be stirred to even no colloidal, with this understanding, with the aliphatic solvent of pump adding residuals weight, be stirred well to dissolving fully; C, the lubricating oil that configures is transferred in the clean oil drum that seals of band sealed storage.
Experimental group: lubricating oil of the present invention, control group: outsourcing lubricating oil of using in the past and gasoline lubricating oil.Under equal conditions, verify with regard to three kinds of lubricating oil respectively that according to present quotation, lubricating oil of the present invention is: 7.52 yuan/kg; The synthetic gasoline lubricating oil of gasoline is: 8.32 yuan/kg; Outsourcing lubricating oil is: 13.00 yuan/kg.Table 4, table 5 are statistic datas that the different rides in workshop and different size are carried out.
Table 4
| The project sequence number | Ride | (specification mm) aluminum steel | The lubricating oil cost value (unit/kg) | Enameled wire oil consumption/kg per ton | Enameled wire lubricating oil cost value per ton (unit/ton) |
| Outsourcing lubricating oil | Q-16 | 1.000 | 13.00 | 17.54 | 228.00 |
| Lubricating oil of the present invention | Q-16 | 0.900 | 7.52 | 14.89 | 111.98 |
Table 5
| Project lubricating oil | Ride | Specification mm | The lubricating oil cost value (unit/kg) | Frictional coefficient | Smell | Enameled wire oil consumption/kg per ton | Enameled wire lubricating oil price per ton (unit/ton) |
| Lubricating oil of the present invention | Q-1 03 | 0.5 00 | 7.52 | 0.049、0.050、 0.047、0.047、 0.061 | Free from extraneous odour | 13.02 | 97.91 |
| Gasoline lubricating oil | Q-1 03 | 0.5 00 | 8.32 | 0.058、0.056、 0.053、0.045、 0.054 | Peculiar smell is arranged | 14.45 | 120.224 |
Behind the application of the invention lubricating oil, enameled wire manufacturing works improve the Workshop Production environment, after friction is the application of the invention lubricating oil, enameled wire manufacturing works improve the Workshop Production environment, the frictional coefficient qualification rate reaches 100%, reduces working strength of workers, reduces production costs.After the client uses the enameled wire that we produce, do not return goods because of poor lubricity, the client reduces in use broken string frequency, and the qualification rate of motor also is improved, and also improves the environmental pollution of client's coil shop simultaneously.
Claims (8)
1. lubricating oil, it is characterized in that: described lubricating oil is that the fatty acid ester of 0.1-1% and the aliphatic solvent of 99-99.9% mix by weight percent, fatty acid ester described here is mixed by beeswax and paraffin, and aliphatic solvent adopts two or more mixture of gasoline, industrial spirit, 120# solvent, 200# solvent, hexanaphthene, sherwood oil, dehydrated alcohol or these solvents of dimethylbenzene.
2. a kind of lubricating oil according to claim 1 is characterized in that: the ratio of mixture of beeswax and paraffin is 1: 1.
3. a kind of lubricating oil according to claim 1 is characterized in that: aliphatic solvent is that the 120# solvent of 20-60% and the sherwood oil of 40-80% mix by weight percent.
4. the preparation method of a lubricating oil, it is characterized in that: described lubricating oil preparation method comprises the steps: a, take by weighing weight percent is that the fatty acid ester of 0.1-1% is put into the anti-still of heating attached middle school, and reactor is heated to 60～70 ℃, fatty acid ester is fully melted; B, take by weighing the aliphatic solvent that weight percent is 99-99.9%, add the aliphatic solvent of 3～5 times fatty acid ester weight in the fatty acid ester solution in a step and be stirred to even no colloidal, with this understanding, with the aliphatic solvent of pump adding residuals weight, be stirred well to dissolving fully; C, the lubricating oil that configures is transferred in the clean oil drum that seals of band sealed storage.
5. a kind of lubricating oil according to claim 4 is characterized in that: in a step, fatty acid ester adopts one or more the mixture in the following material: carnauba wax, beeswax, paraffin and montanin wax.
6. a kind of lubricating oil according to claim 4 is characterized in that: in a step, fatty acid ester is that 50% beeswax and 50% paraffin mix by weight percent.
7. a kind of lubricating oil according to claim 4 is characterized in that: in a step, reactor adopts oil bath or heating in water bath.
8. a kind of lubricating oil according to claim 4 is characterized in that: in the b step, aliphatic solvent is that the 120# solvent of 20-60% and the sherwood oil of 40-80% mix by weight percent.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396861A (en) * | 2013-08-08 | 2013-11-20 | 永上集团南京线缆股份有限公司 | Lubricating oil for varnished wires and application thereof |
| CN104531301A (en) * | 2014-12-19 | 2015-04-22 | 黄洋铜业有限公司 | Lubricating oil for enamel wire and preparation method of lubricating oil |
| CN105969493A (en) * | 2016-05-10 | 2016-09-28 | 安徽九华金润铜业有限公司 | Lubricating agent for copper cladding aluminum enamelled wire |
| CN105969494A (en) * | 2016-05-10 | 2016-09-28 | 安徽九华金润铜业有限公司 | Enameled wire lubricant containing coix seed oil |
| CN111676086A (en) * | 2020-06-29 | 2020-09-18 | 鹤山市江磁线缆有限公司 | High-flame-retardant enameled wire lubricating oil and preparation method thereof |
| CN111718783A (en) * | 2020-05-28 | 2020-09-29 | 昆山键讯电子有限公司 | Lubricating oil suitable for tin-plated copper surface and preparation method thereof |
| CN115340898A (en) * | 2022-08-08 | 2022-11-15 | 四川盛杰机电设备有限责任公司 | Diamond wire lubricant, and preparation method and application thereof |
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| US20020043391A1 (en) * | 2000-08-31 | 2002-04-18 | Kazunori Suzuki | Self-lubricating enameled wire |
| CN101580752A (en) * | 2008-05-13 | 2009-11-18 | 浙江宏磊铜业股份有限公司 | lacquered wire lubricant and manufacture process thereof |
| CN101671595A (en) * | 2009-09-24 | 2010-03-17 | 无锡巨丰复合线有限公司 | Enamelled wire surface lubricant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020043391A1 (en) * | 2000-08-31 | 2002-04-18 | Kazunori Suzuki | Self-lubricating enameled wire |
| CN101580752A (en) * | 2008-05-13 | 2009-11-18 | 浙江宏磊铜业股份有限公司 | lacquered wire lubricant and manufacture process thereof |
| CN101671595A (en) * | 2009-09-24 | 2010-03-17 | 无锡巨丰复合线有限公司 | Enamelled wire surface lubricant |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396861A (en) * | 2013-08-08 | 2013-11-20 | 永上集团南京线缆股份有限公司 | Lubricating oil for varnished wires and application thereof |
| CN103396861B (en) * | 2013-08-08 | 2014-11-05 | 永上集团南京线缆股份有限公司 | Lubricating oil for varnished wires and application thereof |
| CN104531301A (en) * | 2014-12-19 | 2015-04-22 | 黄洋铜业有限公司 | Lubricating oil for enamel wire and preparation method of lubricating oil |
| CN104531301B (en) * | 2014-12-19 | 2018-04-13 | 广州万粤知识产权运营有限公司 | Enameled wire lubricating oil and preparation method thereof |
| CN105969493A (en) * | 2016-05-10 | 2016-09-28 | 安徽九华金润铜业有限公司 | Lubricating agent for copper cladding aluminum enamelled wire |
| CN105969494A (en) * | 2016-05-10 | 2016-09-28 | 安徽九华金润铜业有限公司 | Enameled wire lubricant containing coix seed oil |
| CN111718783A (en) * | 2020-05-28 | 2020-09-29 | 昆山键讯电子有限公司 | Lubricating oil suitable for tin-plated copper surface and preparation method thereof |
| CN111676086A (en) * | 2020-06-29 | 2020-09-18 | 鹤山市江磁线缆有限公司 | High-flame-retardant enameled wire lubricating oil and preparation method thereof |
| CN111676086B (en) * | 2020-06-29 | 2022-05-24 | 鹤山市江磁线缆有限公司 | High-flame-retardant enameled wire lubricating oil and preparation method thereof |
| CN115340898A (en) * | 2022-08-08 | 2022-11-15 | 四川盛杰机电设备有限责任公司 | Diamond wire lubricant, and preparation method and application thereof |
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Application publication date: 20110928 |