CN114317083A - Lubricating composition, preparation method and lubricating method - Google Patents
Lubricating composition, preparation method and lubricating method Download PDFInfo
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- CN114317083A CN114317083A CN202111663936.9A CN202111663936A CN114317083A CN 114317083 A CN114317083 A CN 114317083A CN 202111663936 A CN202111663936 A CN 202111663936A CN 114317083 A CN114317083 A CN 114317083A
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- lubricating composition
- alkyl
- alkanol
- antioxidant
- cutting
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 82
- 239000000203 mixture Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 62
- 150000002148 esters Chemical class 0.000 claims abstract description 30
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 29
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 16
- 238000005461 lubrication Methods 0.000 claims description 15
- 238000009835 boiling Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- ONAJCHYEVMVJQN-UHFFFAOYSA-N 6-methylheptyl benzoate Chemical group CC(C)CCCCCOC(=O)C1=CC=CC=C1 ONAJCHYEVMVJQN-UHFFFAOYSA-N 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 8
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- RMKNTZWZQFIOOB-UHFFFAOYSA-N n-butyl-2-octyl-n-phenylaniline Chemical compound CCCCCCCCC1=CC=CC=C1N(CCCC)C1=CC=CC=C1 RMKNTZWZQFIOOB-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 22
- 230000000996 additive effect Effects 0.000 abstract description 22
- 238000005299 abrasion Methods 0.000 abstract description 12
- 239000002480 mineral oil Substances 0.000 abstract description 11
- 235000010446 mineral oil Nutrition 0.000 abstract description 11
- 239000003921 oil Substances 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 230000003254 anti-foaming effect Effects 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229940008099 dimethicone Drugs 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- -1 phosphate ester Chemical class 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005069 Extreme pressure additive Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Lubricants (AREA)
Abstract
The invention relates to a lubricating composition, a preparation method and a lubricating method, wherein the lubricating composition comprises 2-alkyl-1-alkanol, low-viscosity synthetic ester and an antioxidant, and the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01). The 2-alkyl-1-alkanol has good lubricity, and ensures cutting speed and cutting precision; the low-viscosity synthetic ester has excellent performance in the aspect of reducing the abrasion of a cutting element, has narrow fraction and good volatility, can completely volatilize completely at the heat treatment temperature and time of 250 ℃ and 60-90 min, has no residue and can ensure the quality of a processed part; the antioxidant can ensure that the oil product cannot age or slow down the aging and deterioration of the product in the processes of storage, transportation and use; the method replaces the original mineral oil and the technology of adding the additive into the mineral oil, can improve the processing speed and the processing precision, reduce the abrasion of a saw wheel and a saw blade, reduce the problems of surface residue and blackening after heat treatment and reduce the rejection rate of products.
Description
Technical Field
The invention relates to the technical field of industrial manufacturing, in particular to a lubricating composition, a preparation method and a lubricating method.
Background
The aluminum alloy piston riser is mainly arranged on three parts, namely two sides of the skirt part and the head part, and the riser needs to be cut to complete the manufacturing of the aluminum alloy piston.
The existing traditional aluminum alloy piston riser cutting method comprises the following steps:
1. dry cutting without lubrication
The aluminum piston casting riser is directly cut by a cutting saw wheel or a cutting saw belt without lubricating oil and water and cooling, the cutting speed is generally low, the cutting speed is below 1000r/min, and the problems are that the processing speed is low, the production efficiency is low, the cutting surface is rough, the saw wheel and a saw blade are greatly abraded, the risk of generating slight cracks on the cut riser is caused, and the quality of a piston part is finally influenced.
2. Cutting with lubrication and cooling
Modern aluminum piston riser head cutting is developed towards high speed, high productivity and high efficiency, the cutting speed reaches more than 2000r/min, higher requirements are put on cutting lubrication, except that part of water is used as a cooling medium, most of the aluminum piston riser head cutting is slightly lubricated by special lubricating oil, low-viscosity mineral oil is used, lubricant and extreme pressure additive are added into the mineral oil, and the cutting lubrication products have the problems of poor lubrication, slow volatilization, large residue, blackened part surface after later heat treatment and the like, so that the quality of part products is influenced.
At present, no effective solution is provided for the problems of low cutting speed, low processing efficiency, large abrasion of a saw wheel and a saw belt, easy generation of cracks at a cut of a cut part, more surface residues after heat treatment after cutting, high product rejection rate and the like in the related technology.
Disclosure of Invention
The invention aims to provide a lubricating composition, a preparation method and a lubricating method aiming at the defects in the prior art, and aims to solve the problems of low cutting speed, low processing efficiency, large abrasion of a saw wheel and a saw belt, more residual surfaces after heat treatment after cutting, high product rejection rate and the like in the related technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first aspect, there is provided a lubricating composition comprising:
(1) 2-alkyl-1-alkanols;
(2) low viscosity synthetic esters;
(3) an antioxidant;
wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01);
wherein the lubricating composition has a kinematic viscosity at 40 ℃ of 4 to 10mm2(ii)/s, the acid number of the lubricating composition is no greater than 0.1mgKOH/g, the pour point of the lubricating composition is no greater than-30 ℃, the boiling point of the lubricating composition is no greater than 280 ℃, and the closed flash point of the lubricating composition>140℃。
In some of these embodiments, the alkyl group of the backbone of the 2-alkyl-1-alkanol has 8 to 15 carbon atoms, the alkyl group of the side chain of the 2-alkyl-1-alkanol has 2 to 8 carbon atoms, and the number of carbon atoms of the side chain is less than the number of carbon atoms of the backbone.
In some of these embodiments, the 2-alkyl-1-alkanol is 2-octane-1-dodecanol.
In some of these embodiments, the low viscosity synthetic ester is isooctyl benzoate.
In some of these embodiments, the antioxidant is 2, 6-di-tert-butyl-p-cresol or octylbutyldiphenylamine.
In some of these embodiments, further comprising:
(4) an anti-foaming additive.
In some of these embodiments, the mass ratio of the anti-foaming additive to the 2-alkyl-1-alkanol is (0.001 to 0.005): (3-4).
In some of these embodiments, the anti-foaming additive is dimethicone.
In some of these embodiments, further comprising:
(5) a passivating additive.
In some of these embodiments, the mass ratio of passivating additive to 2-alkyl-1-alkanol is (0.003-0.008): (3-4).
In some of these embodiments, the passivating additive is a phosphate ester.
In some of the embodiments, the aluminum alloy piston riser cutting device is used for a cutting procedure of an aluminum alloy piston riser.
In a second aspect, there is provided a method of preparing a lubricating composition comprising:
adding a certain amount of 2-alkyl-1-alkanol into a reaction container, and heating to 50-60 ℃ to form a first solution;
adding a certain amount of antioxidant into the first solution, and stirring for 15-60 min at 50-60 ℃ to form a second solution;
adding a quantity of a low viscosity synthetic ester to the second solution, stirring at 50-60 ℃ for 15-60 min to form a lubricating composition;
wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01);
wherein the lubricating composition has a kinematic viscosity at 40 ℃ of 4 to 10mm2(ii)/s, the acid number of the lubricating composition is no greater than 0.1mgKOH/g, the pour point of the lubricating composition is no greater than-30 ℃, the boiling point of the lubricating composition is no greater than 280 ℃, and the closed flash point of the lubricating composition>140℃。
In some of these embodiments, the alkyl group of the backbone of the 2-alkyl-1-alkanol has 8 to 15 carbon atoms, the alkyl group of the side chain of the 2-alkyl-1-alkanol has 2 to 8 carbon atoms, and the number of carbon atoms of the side chain is less than the number of carbon atoms of the backbone.
In some of these embodiments, the 2-alkyl-1-alkanol is 2-octane-1-dodecanol
In some of these embodiments, the low viscosity synthetic ester is isooctyl benzoate.
In some of these embodiments, the antioxidant is 2, 6-di-tert-butyl-p-cresol or octylbutyldiphenylamine.
In some embodiments, a certain amount of 2-alkyl-1-alkanol is added to a reaction vessel and heated to 50-60 ℃ to form a first solution, wherein the heating time is less than 2 hours and the holding time is 5-25 min.
In some of these embodiments, the incubation time is 15 min.
In some embodiments, an amount of an antioxidant is added to the first solution and stirred at 50-60 ℃ for 20-30min to form a second solution.
In some of these embodiments, an amount of a low viscosity synthetic ester is added to the second solution and stirred at 50-60 ℃ for 20-30min to form a lubricating composition.
In some embodiments, the stirring speed is 80-120 r/min.
In some of these embodiments, further comprising:
adding a certain amount of anti-foaming additive and/or passivation additive to the second solution, and stirring for 15-60 min at 50-60 ℃.
In a third aspect, there is provided a method of lubrication using the lubricating composition of the first aspect.
In some embodiments, the aluminum alloy piston riser is lubricated in the cutting process.
In some of these embodiments, the method includes:
coating the surface of the cutting element of the cutting process with the lubricating composition.
In some of these embodiments, the lubricating composition is applied to the surface of the cutting element by spot application or spray application.
In some of these embodiments, the cutting element comprises a cutting saw wheel, a cutting saw blade.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
according to the lubricating composition, the preparation method and the lubricating method, the 2-alkyl-1-alkanol has good lubricating property, and the cutting speed and the cutting precision are ensured; the low-viscosity synthetic ester has excellent performance in the aspect of reducing the abrasion of a cutting element, has narrow fraction and good volatility, can completely volatilize completely at the heat treatment temperature and time of 250 ℃ and 60-90 min, has no residue and can ensure the quality of a processed part; the antioxidant can ensure that the oil product cannot age or slow down the aging and deterioration of the product in the processes of storage, transportation and use; the method replaces the original mineral oil and the technology of adding the additive into the mineral oil, can improve the processing speed and the processing precision, reduce the abrasion of a saw wheel and a saw blade, reduce the surface residue and blackening problem after heat treatment, reduce the product rejection rate, and solve the problems of low cutting speed, low processing efficiency, large abrasion of a cutting element, more surface residue after heat treatment after cutting, high product rejection rate and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1
This example relates to a lubricating composition of the present invention.
A lubricating composition comprises (1) 2-alkyl-1-alkanol, (2) low-viscosity synthetic ester and (3) antioxidant, wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01).
Wherein the lubricating composition has a kinematic viscosity at 40 ℃ of 4 to 10mm2(s) the acid value of the lubricating composition is less than or equal to 0.1mgKOH/g, the pour point of the lubricating composition is less than or equal to-30 ℃, the boiling point of the lubricating composition is less than or equal to 280 ℃, and the closed flash point of the lubricating composition>140℃。
In some of these examples, the mass ratios of 2-alkyl-1-alkanol, low viscosity synthetic ester, antioxidant are as follows:
further, the number of carbon atoms of the alkyl group of the main chain of the 2-alkyl-1-alkanol is 8 to 15, the number of carbon atoms of the alkyl group of the branched chain of the 2-alkyl-1-alkanol is 2 to 8, and the number of carbon atoms of the branched chain is smaller than the number of carbon atoms of the main chain.
Further, the 2-alkyl-1-alkanol is 2-octane-1-dodecanol.
Further, a low viscosity synthetic ester is isooctyl benzoate.
Further, the antioxidant is 2, 6-di-tert-butyl-p-cresol or octyl butyl diphenylamine.
Preferably, the antioxidant is 2, 6-di-tert-butyl-p-cresol.
Further, still include:
(4) an anti-foaming additive.
Wherein the mass ratio of the anti-foaming additive to the 2-alkyl-1-alkanol is (0.001-0.005): (3-4).
In some of these examples, the mass ratio of 2-alkyl-1-alkanol to anti-foaming additive is as follows:
further, the anti-foaming additive is dimethicone.
Further, still include:
(5) a passivating additive.
Wherein the mass ratio of the passivation additive to the 2-alkyl-1-alkanol is (0.003-0.008): (3-4).
In some of these examples, the mass ratio of 2-alkyl-1-alkanol to anti-foaming additive is as follows:
in some of these embodiments, the passivating additive is a phosphate ester.
Further, the method is used for the cutting process of the aluminum alloy piston riser.
In the related art, the traditional lubricating products (mineral oil, mineral oil and additive) have the following defects of poor lubrication, slow volatilization, large residue, blackening of the surface of a part after later heat treatment and the like, and influence on the quality of the part product.
Compared with the lubricating product, the lubricating composition has good lubricity by adopting the 2-alkyl-1-alkanol, thereby ensuring the cutting speed and the cutting precision; the low-viscosity synthetic ester has excellent performance in the aspect of reducing the abrasion of a cutting element, has narrow fraction and good volatility, can completely volatilize at the heat treatment temperature and time of 300 ℃ and 60-90 min, has no residue and can ensure the quality of a processed part; the antioxidant can ensure that the oil product cannot age or slow down the aging and deterioration of the product in the processes of storage, transportation and use; the method has the advantages of replacing the original technology of adding the additive into the mineral oil and the mineral oil, improving the processing speed and the processing precision, reducing the abrasion of saw wheels and saw blades, reducing the surface residue and blackening problem after heat treatment, reducing the product rejection rate, and solving the problems of low cutting speed, low processing efficiency, large abrasion of cutting elements, more surface residue after heat treatment after cutting, easy generation of cracks at a cutting riser, high rejection rate of parts products and the like.
Example 2
This example relates to a method of making a lubricating composition of the present invention.
A method of making a lubricating composition comprising:
step S102, adding a certain amount of 2-alkyl-1-alkanol into a reaction container, and heating to 50-60 ℃ to form a first solution;
step S104, adding a certain amount of antioxidant into the first solution, and stirring for 15-60 min at 50-60 ℃ to form a second solution;
and S106, adding a certain amount of low-viscosity synthetic ester into the second solution, and stirring for 15-60 min at 50-60 ℃ to form the lubricating composition.
Wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01);
wherein,the kinematic viscosity of the lubricating composition at 40 ℃ is 4-10 mm2(s) the acid value of the lubricating composition is less than or equal to 0.1mgKOH/g, the pour point of the lubricating composition is less than or equal to-30 ℃, the boiling point of the lubricating composition is less than or equal to 280 ℃, and the closed flash point of the lubricating composition>140℃。
Further, the number of carbon atoms of the alkyl group of the main chain of the 2-alkyl-1-alkanol is 8 to 15, the number of carbon atoms of the alkyl group of the branched chain of the 2-alkyl-1-alkanol is 2 to 8, and the number of carbon atoms of the branched chain is smaller than the number of carbon atoms of the main chain.
Further, the 2-alkyl-1-alkanol is 2-octane-1-dodecanol.
Further, a low viscosity synthetic ester is isooctyl benzoate.
Further, the antioxidant is 2, 6-di-tert-butyl-p-cresol or octyl butyl diphenylamine.
In step S102, a certain amount of 2-alkyl-1-alkanol is added into a reaction container and heated to 50-60 ℃ to form a first solution, wherein the heating time is less than 2 hours, and the heat preservation time is 5-25 min.
Preferably, the incubation time is 15 min.
In step S104, a certain amount of antioxidant is added to the first solution, and the mixture is stirred at 50-60 ℃ for 20-30min to form a second solution.
In step S106, a certain amount of low viscosity synthetic ester is added to the second solution, and stirred at 50-60 ℃ for 20-30min to form the lubricating composition.
Further, in step S104 and step S106, the stirring speed is 80 to 120 r/min.
Further, step S104 further includes:
adding a certain amount of anti-foaming additive and/or passivation additive into the second solution, and stirring for 15-60 min at 50-60 ℃.
The preparation method of the lubricating composition is simple and quick, pollution-free and corrosion-free, and is an environment-friendly green preparation method.
Example 3
The present embodiment relates to the lubrication method of the present invention.
In the lubricating method of the present invention, the lubricating composition of example 1 was used to lubricate the cutting step of the aluminum alloy piston riser.
In one exemplary embodiment of the present invention, a method of lubrication, includes:
step S202, the surface of the cutting element of the cutting process is covered with the lubricating composition.
In step S202, the lubricating composition is applied to the surface of the cutting element by spot application or spray application.
In some of these embodiments, the cutting element comprises a cutting saw wheel, a cutting saw blade.
According to the lubricating method, the lubricating composition is filled in the cutting element, so that the lubricating and cooling effects are achieved, the lubricating effect is increased, the cutting speed is improved, the abrasion of an appliance is reduced, after the cut part is subjected to heat treatment at 300 ℃ for 1-1.5 h, the residual oil is completely volatilized and does not remain on the surface, and the rejection rate caused by carbonization such as blackening is reduced; the cutting speed can be increased by 1-2 times, the service life of the cutting tool is prolonged by 3-4 times, the residual trace oil after processing volatilizes completely in the heat treatment process, the problem of carbonization and blackening can not occur, the rejection rate of products is reduced, and the efficiency and the benefit of enterprises are increased. Meanwhile, the environment-friendly product has no toxicity to human bodies and environment, does not corrode equipment, and has great social benefit.
Example 4
This example is a specific embodiment of the lubricating composition, method of preparation and method of lubrication of the present invention.
A method of making a lubricating composition comprising:
(1) 2-alkyl-1-alkanol is metered and pumped into a reaction kettle, the temperature is raised to 50-60 ℃, the temperature rise time is controlled within 2 hours, and the heat preservation time is 15 min;
(2) firstly, metering and adding the 2, 6-di-tert-butyl-p-cresol antioxidant, and stirring and dissolving at the temperature of 50-60 ℃ until the antioxidant is dissolved, wherein the stirring speed is 80-120r/min, and the stirring time is 20-30 min;
(3) then adding isooctyl benzoate according to the measurement, the stirring speed is 80-120r/min, and the stirring time is 20-30 min;
(4) sampling, detecting, and packaging and leaving factory after being qualified.
Wherein the 2-alkyl-1-alkanol is 2-octane-1-dodecanol.
Wherein 2, 6-di-tert-butyl-p-cresol antioxidant can be replaced by octyl butyl diphenylamine.
The quality indexes of the lubricating composition of the invention are as follows:
| detecting items | Detecting the index | Detection method |
| Kinematic viscosity (40 ℃ C.), mm2/s | 4-10 | GB/T265 |
| Acid value of mgKOH/g or less | 0.1 | GB/T264 |
| Pour point, DEG C is not higher than | -30 | GB/T3535 |
| Boiling point of not higher than DEG C | 280 | GB/T616 |
| Closed flash point at a temperature of not less than DEG C | 140 | GB/T261 |
Specifically, five different formulations of lubricating compositions were performed as follows:
1. 2-alkyl-1-alkanol: the low viscosity synthetic ester (isooctyl benzoate) was 3: 1 hour, the viscosity is 2.2mm2(ii) a boiling point of 266 ℃ and a closed flash point of 154 ℃, and qualified;
2. 2-alkyl-1-alkanol: low viscosity synthetic ester (isooctyl benzoate) 3.5: 1 hour, the viscosity is 2.8mm2The boiling point is 264 ℃ and the closed flash point is 146 ℃, and the product is qualified;
3. 2-alkyl-1-alkanol: low viscosity synthetic ester (isooctyl benzoate) 3.5: at 1.5 hours, the viscosity is 3.3mm2(ii)/s, boiling point 268 ℃, closed flash point 150 ℃, and qualified;
4. 2-alkyl-1-alkanol: the low viscosity synthetic ester (isooctyl benzoate) was 4: 1 hour, the viscosity is 3.0mm2(ii) a boiling point of 260 ℃ and a closed flash point of 144 ℃ which are qualified;
5. 2-alkyl-1-alkanol: the low viscosity synthetic ester (isooctyl benzoate) was 4: at 1.5 hours, the viscosity is 3.2mm2And/s, boiling point 266 ℃, closed flash point 154 ℃ and qualified.
Example 5
This example is a specific application case of the lubricating composition, the method of preparation and the method of lubrication of the present invention.
Specific application case 1
An enterprise is a piston manufacturing enterprise which is good-priced in the middle and everyday, 6 thousands of pistons with different specifications and models are processed and produced every day, 4 dead head cutting devices are arranged, the original common mineral oil is used for cutting, one machine can only cut about 5000 products in one shift, after the product is adopted, one machine can cut more than 14000 products in one shift, the processing time is greatly shortened, the production efficiency is increased by more than 100%, the original 2 shifts in one day are adjusted to one shift in one shift, the rejection rate of blackening residue and product cracks is avoided, and the production cost can be reduced by more than 250 thousands through preliminary statistics all the year around. Can bring considerable economic benefits to enterprises.
Specific application case two
An enterprise is a domestic piston production enterprise with stocks, 3500 thousands of aluminum pistons are processed every year, the original dry cutting without lubricant is adopted, the efficiency is extremely low, the abrasion of saw blades is large, the annual consumable material needs 15 ten thousand yuan, 20 feeder head cutting machines are arranged in a workshop, the production efficiency is extremely low, after the product is used, the consumable material cost is saved every year, the processing efficiency is greatly improved, the yield of the original 20 machines can be finished only by 8 machines at present, 12 operators are reduced, the annual direct cost is reduced by 150 ten thousand yuan, and the qualification rate of the product is greatly superior to that of the past.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A lubricating composition, comprising:
(1) 2-alkyl-1-alkanols;
(2) low viscosity synthetic esters;
(3) an antioxidant;
wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01);
wherein the lubricating composition has a kinematic viscosity at 40 ℃ of 4 to 10mm2(ii)/s, the acid number of the lubricating composition is no greater than 0.1mgKOH/g, the pour point of the lubricating composition is no greater than-30 ℃, the boiling point of the lubricating composition is no greater than 280 ℃, and the closed flash point of the lubricating composition>140℃。
2. The lubricating composition according to claim 1, wherein the number of carbon atoms of the alkyl group in the main chain of the 2-alkyl-1-alkanol is 8 to 15, the number of carbon atoms of the alkyl group in the branch chain of the 2-alkyl-1-alkanol is 2 to 8, and the number of carbon atoms of the branch chain is smaller than the number of carbon atoms in the main chain.
3. The lubricating composition of claim 1 or 2, wherein the low viscosity synthetic ester is isooctyl benzoate; and/or
The antioxidant is 2, 6-di-tert-butyl-p-cresol or octyl butyl diphenylamine.
4. The lubricating composition according to any one of claims 1 to 3, which is used in a cutting process of an aluminum alloy piston riser.
5. A method of making a lubricating composition, comprising:
adding a certain amount of 2-alkyl-1-alkanol into a reaction container, and heating to 50-60 ℃ to form a first solution;
adding a certain amount of antioxidant into the first solution, and stirring for 15-60 min at 50-60 ℃ to form a second solution;
adding a quantity of a low viscosity synthetic ester to the second solution, stirring at 50-60 ℃ for 15-60 min to form a lubricating composition;
wherein the mass ratio of the 2-alkyl-1-alkanol to the low-viscosity synthetic ester to the antioxidant is (3-4): (1-1.5): (0.005-0.01);
wherein the lubricating composition has a kinematic viscosity at 40 ℃ of 4 to 10mm2(ii)/s, the acid number of the lubricating composition is no greater than 0.1mgKOH/g, the pour point of the lubricating composition is no greater than-30 ℃, the boiling point of the lubricating composition is no greater than 280 ℃, and the closed flash point of the lubricating composition>140℃。
6. The method of claim 5, wherein the first solution is formed by adding a quantity of 2-alkyl-1-alkanol to the reaction vessel and heating to 50-60 ℃, wherein the heating time is less than 2 hours and the holding time is 5-25 min.
7. The method according to claim 5 or 6, wherein the stirring speed is 80 to 120 r/min.
8. A method of lubrication, wherein the lubricating composition of any one of claims 1 to 4 is used.
9. The lubrication method according to claim 8, wherein the aluminum alloy piston riser is subjected to lubrication treatment in the cutting step.
10. The lubrication method according to claim 8 or 9, comprising:
coating the surface of the cutting element of the cutting process with the lubricating composition.
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