CN109054942B - Long-life engine oil for electric spark mirror surface machining - Google Patents
Long-life engine oil for electric spark mirror surface machining Download PDFInfo
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- 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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/022—Well-defined aliphatic compounds saturated
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic compounds
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
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- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
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- 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
- C10N2030/02—Pour-point; Viscosity index
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Abstract
The invention discloses a long-life engine oil for electric spark mirror surface machining, which relates to the field of electric spark machining oil and comprises the following raw materials in parts by weight: 60-75 parts of n-alkane solvent oil, 0.2-0.8 part of isopropyl oleate, 0.2-0.8 part of corrosion inhibitor and 0.5-1.5 parts of hydrogenated aromatic hydrocarbon.
Description
Technical Field
The invention relates to the field of electric spark machining oil, in particular to long-life engine oil for electric spark mirror surface machining.
Background
The electric spark oil is a special cooling medium for the die forming machine (electric spark machine, also called electric pulse machine). As early as 80 and 90 years, most of the traditional electric spark machining uses kerosene as a machining medium, and later, special electric spark oil is used in plastic mold manufacturing areas such as Taiwan, south China to mainland coastal areas, and the like, wherein the special electric spark oil is a low-viscosity solvent-type low-aromatic-hydrocarbon CH mixture with the viscosity of about 1.5-3.0.
At present, common electric spark oil in the markets of mainland China, hongkong China and Taiwan China has complicated varieties and low quality, and the color is easy to darken and turn yellow after the electric spark oil is used; sometimes, pungent peculiar smells such as scorch smell, paint smell and the like exist, the generation of acidified sulfides and oil sludge is fast, the rusting risk of a mold is increased, the chip removal performance and the carbon deposit removal performance of a medium piece are rapidly deteriorated, and the stable machining precision cannot be ensured. In addition, although the rough machining rough corrosion speed of the existing electric spark oil is relatively high, the existing electric spark oil has high aromatic hydrocarbon content (5% -26%), and also has the effects of dissolving and stimulating the skin.
With the requirements of the Chinese high-end precision manufacturing industry and the aviation industry on the mirror surface processing of specific novel alloy material products, a new generation of high-end electric spark mirror surface processing machine tool comes out. The existing electric spark oil can not meet the requirement of mirror finishing at all due to the inherent defects.
The Chinese patent application CN105925349A discloses an electric spark oil for electric spark mirror surface processing, which is composed of the following raw materials by weight: 6-10 parts of solvent oil D110 (Nanjing Union America chemical industry), 0.7-1 part of polyepoxysuccinic acid, 2-3 parts of dodecenylsuccinic acid, 0.1-0.14 part of triallyl isocyanurate, 0.02-0.04 part of 1,2, 3-benzotriazole, 0.1-0.2 part of polyimide, 1-2 parts of polyacrylamide, 75-85 parts of normal alkane solvent oil, 0.6-1 part of isopropyl oleate, 1.5-2 parts of corrosion inhibitor, and ethyl acetate
0.05 to 0.06 percent of zinc acetylacetonate, 0.01 to 0.02 percent of polyglycerol fatty acid ester, 2 to 4 percent of N-vinyl pyrrolidone, 0.3 to 0.4 percent of ethyl orthosilicate and 0.1 to 0.2 percent of dimethyl silicone oil.
Disclosure of Invention
The invention aims to provide long-life engine oil for electric spark mirror finishing, which aims to solve the defects in the prior art.
A long-life engine oil for electric spark mirror surface machining is composed of the following raw materials in parts by weight:
60-75 parts of normal alkane solvent oil, 14-1625-35 parts of solvent oil C, 0.2-0.8 part of isopropyl oleate, 0.2-0.8 part of corrosion inhibitor and 0.5-1.5 parts of hydrogenated aromatic hydrocarbon.
Preferably, the feed consists of the following raw materials in parts by weight:
68 parts of n-alkane solvent oil, 14-1630 parts of solvent oil C, 0.5 part of isopropyl oleate, 0.5 part of corrosion inhibitor and 1 part of hydrogenated aromatic hydrocarbon.
Preferably, the corrosion inhibitor is prepared from the following raw materials in parts by weight:
22-25 parts of 2-mercaptobenzothiazole, 6-7.5 parts of N, N-diethylethanolamine, 6-7.5 parts of N-formanilide, 0.6-sp-800.4 and 60-65 parts of isopropanol.
Preferably, the n-alkane solvent oil is twelve-fourteen carbon n-alkanes.
The invention also provides a preparation method of the long-life engine oil for electric spark mirror surface machining, which comprises the following steps:
(1) preheating isopropyl oleate for 3 minutes at the temperature of 80-90 ℃ to obtain a first solvent;
(2) adding a corrosion inhibitor into deionized water with the weight of 3-5 times, raising the temperature to 60-70 ℃, stirring for 8 minutes at 100 r/min, dropwise adding an ammonia water solution with the weight percentage concentration of 8%, adjusting the pH to 11-12, standing and reacting for 30 minutes at the temperature, then mixing with the solvent I in the step (1), and stirring for 2-3 minutes at 1000 r/min to obtain a solvent II;
(3) mixing the solvent oil C14-16 and the n-alkane solvent oil, adding the mixture into a blending tank, stirring the mixture for 20 minutes at normal temperature, adding the solvent II, stirring the mixture evenly, adding the hydrogenated aromatic hydrocarbon, stirring the mixture for 3 to 6 minutes at the temperature of between 50 and 60 ℃, dehydrating the mixture, and neutralizing the pH value to between 7 and 8 to obtain the finished product of the jonquil oil for electric spark mirror machining.
The invention has the advantages that: the oil-based cooling agent has the advantages of low viscosity, high flash point, no peculiar smell, no stimulation to skin, excellent cooling property, long service life, environmental protection and no smell, and compared with the same-grade product, the oil-based cooling agent has longer service life and is more environment-friendly.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
A long-life engine oil for electric spark mirror surface machining is composed of the following raw materials in parts by weight:
60 parts of normal alkane solvent oil, 14-1635 parts of solvent oil C, 0.2 part of isopropyl oleate, 0.8 part of corrosion inhibitor and 1 part of hydrogenated aromatic hydrocarbon.
Further, the corrosion inhibitor comprises the following components in parts by weight:
2-mercaptobenzothiazole 25, N-diethylethanolamine 7, N-formanilide 7.5, sp-800.5 and isopropanol 60.
Further, the n-alkane solvent oil is twelve-fourteen carbon n-alkanes.
Further, the preparation method of the long-life engine oil for electric spark mirror surface machining comprises the following steps:
(1) preheating isopropyl oleate for 3 minutes at the temperature of 80 ℃ to obtain a first solvent;
(2) adding a corrosion inhibitor into deionized water with the weight being 3 times that of the solvent II, raising the temperature to 60 ℃, stirring for 8 minutes at 100 r/min, dropwise adding an ammonia water solution with the weight percentage concentration of 8%, adjusting the pH to 12, standing and reacting for 30 minutes at the temperature, then mixing with the solvent I in the step (1), and stirring for 3 minutes at 600 r/min to obtain a solvent II;
(3) mixing the solvent oil C14-16 and the normal alkane solvent oil, adding the mixture into a blending tank, stirring the mixture for 20 minutes at normal temperature, adding the solvent II, stirring the mixture evenly, adding the hydrogenated aromatic hydrocarbon, stirring the mixture for 6 minutes at 50 ℃, dehydrating the mixture, and neutralizing the pH value to 7 to obtain the finished product of the jonquil oil for the electric spark mirror finishing.
Example 2
A long-life engine oil for electric spark mirror surface machining is composed of the following raw materials in parts by weight:
75 parts of n-alkane solvent oil, 14-1625 parts of solvent oil C, 0.8 part of isopropyl oleate, 0.2 part of corrosion inhibitor and 1 part of hydrogenated aromatic hydrocarbon.
Further, the corrosion inhibitor comprises the following components in parts by weight:
25 parts of 2-mercaptobenzothiazole, 7.2 parts of N, N-diethylethanolamine, 6.2 parts of N-formanilide, 800.6 parts of sp-and 61 parts of isopropanol.
Further, the n-alkane solvent oil is twelve-fourteen carbon n-alkanes.
Further, the preparation method of the long-life engine oil for electric spark mirror surface machining comprises the following steps:
(1) preheating isopropyl oleate for 3 minutes at 90 ℃ to obtain a first solvent;
(2) adding a corrosion inhibitor into deionized water with the weight 5 times that of the solvent II, raising the temperature to 70 ℃, stirring for 8 minutes at 100 r/min, dropwise adding an ammonia water solution with the weight percentage concentration of 8%, adjusting the pH to 12, standing and reacting for 30 minutes at the temperature, then mixing with the solvent I in the step (1), and stirring for 2 minutes at 1000 r/min to obtain a solvent II;
(3) mixing the solvent oil C14-16 and the normal alkane solvent oil, adding the mixture into a blending tank, stirring the mixture for 20 minutes at normal temperature, adding the solvent II, stirring the mixture evenly, adding the hydrogenated aromatic hydrocarbon, stirring the mixture for 3 minutes at the temperature of 60 ℃, dehydrating the mixture, and neutralizing the pH value to 8 to obtain the finished product of the jonquil for the electric spark mirror machining.
Example 3
A long-life engine oil for electric spark mirror surface machining is composed of the following raw materials in parts by weight:
68 parts of n-alkane solvent oil, 14-1630 parts of solvent oil C, 0.5 part of isopropyl oleate, 0.5 part of corrosion inhibitor and 1 part of hydrogenated aromatic hydrocarbon.
Further, the corrosion inhibitor comprises the following components in parts by weight:
24 parts of 2-mercaptobenzothiazole, 6.9 parts of N, N-diethylethanolamine, 6.7 parts of N-formanilide, sp-800.4 and 62 parts of isopropanol.
Further, the n-alkane solvent oil is twelve-fourteen carbon n-alkanes.
Further, the preparation method of the long-life engine oil for electric spark mirror surface machining comprises the following steps:
(1) preheating isopropyl oleate for 3 minutes at the temperature of 80 ℃ to obtain a first solvent;
(2) adding a corrosion inhibitor into deionized water with the weight 5 times that of the solvent II, raising the temperature to 70 ℃, stirring for 8 minutes at 100 r/min, dropwise adding an ammonia water solution with the weight percentage concentration of 8%, adjusting the pH to 12, standing and reacting for 30 minutes at the temperature, then mixing with the solvent I in the step (1), and stirring for 3 minutes at 800 r/min to obtain a solvent II;
(3) mixing the solvent oil C14-16 and the normal alkane solvent oil, adding the mixture into a blending tank, stirring the mixture for 20 minutes at normal temperature, adding the solvent II, stirring the mixture evenly, adding the hydrogenated aromatic hydrocarbon, stirring the mixture for 4 minutes at the temperature of 60 ℃, dehydrating the mixture, and neutralizing the pH value to 7 to obtain the finished product of the jonquil for the electric spark mirror machining.
The long-life engine oil for electric spark mirror surface machining prepared in the embodiment 3 of the invention is tested, and the performance test indexes are as follows:
| exemplary data of the invention | Data or conclusions |
| Appearance of the product | Colorless water white transparent |
| Smell(s) | Is free of |
| Viscosity cSt @40 deg.C | About 1.82 |
| Flash point (COC) deg.C | Over 97 |
| The copper sheet corrodes Cu at 100 ℃ for 3h | 1 |
| Aromatic hydrocarbon content | 0 |
| Neutralization value mg KOH. g-1 | 0.01 |
| Freezing point of | -20 |
Compared with the prior art, the invention has the following advantages.
(1) On the premise of ensuring safety, the viscosity of the spark oil is lower, the viscosity of the spark oil is about 1.6-2.0, the viscosity of the conventional spark oil is 2.5-3.5, the low-viscosity fluidity is good in heat dissipation performance, and the cooling performance is improved;
(2) the flash point is high, the control index is more than 97 ℃, and the general pilot marks and enterprise marks are more than 70 ℃, so that the fire is not easy to be ignited during processing; the boiling point is high, reaches above about 105 ℃, and is not easy to vaporize and lose.
(3) The oil-water separation performance is qualified because the oil-water separation is not dissolved in water, and a small amount of water can be volatilized naturally through circular heating and ventilation. Can not cause the rusting of the machine body workpiece. The workpiece is not polluted and corroded.
(4) The invention has no chemical peculiar smell, no smoke and no odor during processing, does not need a special exhaust system, has no toxicity, no odor and no irritation to skin, is suitable for closed environment because an insoluble machine tool decrypts the sealing system, and is beneficial to air purification. Does not contain harmful substances, meets the ROHS environmental protection instruction requirement and has no pollution.
(5) The service life is improved by 1.1 times.
Service life test experiment:
the test experiment is carried out on three brands of spark machines of the well-known brand numerical control spark machine which is popular in China at present:
a, processing a machine table: the spark machine Beijing electromachining institute-Dimeng CNC-EDM-A30, Dimengbuck CNCEDM-B30, Shanghai Hanba CNC-EDM-HP 45;
b, processing the workpiece: an air outlet die of an automobile instrument panel of a certain brand;
c, processing time: processing for 16 hours per day;
d, processing material: imported high-quality carbon steel S55C;
e, processing technology: standard process, copper forging steel;
f, interpolation mode: a straight line;
g, processing mode: one group of coarse beating and 3 groups of fine beating.
h, test results: the service life of the three machine tools can reach more than 5950 hours; under the same processing conditions, the service life of the common electric spark oil is only 2850 hours. Compared with the common electric spark oil, the service life of the invention is improved by 1.1 times.
Test comparison table:
Claims (4)
1. the long-life engine oil for electric spark mirror surface machining is characterized by comprising the following raw materials in parts by weight:
60-75 parts of n-alkane solvent oil, 14-1625-35 parts of solvent oil C, 0.2-0.8 part of isopropyl oleate, 0.2-0.8 part of corrosion inhibitor and 0.5-1.5 parts of hydrogenated aromatic hydrocarbon;
the corrosion inhibitor comprises the following raw materials in parts by weight:
22-25 parts of 2-mercaptobenzothiazole, 6-7.5 parts of N, N-diethylethanolamine, 6-7.5 parts of N-formanilide, 0.6-sp-800.4 and 60-65 parts of isopropanol.
2. The long-life engine oil for electric spark mirror finishing is characterized by comprising the following raw materials in parts by weight:
68 parts of n-alkane solvent oil, 14-1630 parts of solvent oil C, 0.5 part of isopropyl oleate, 0.5 part of corrosion inhibitor and 1 part of hydrogenated aromatic hydrocarbon.
3. The long-life engine oil for electric spark mirror finishing as claimed in claim 1, wherein the n-alkane solvent oil is n-dodecane to tetradecane.
4. The method for preparing long-life engine oil for electric spark mirror finishing according to claim 1, characterized by comprising the following steps:
(1) preheating isopropyl oleate for 3 minutes at the temperature of 80-90 ℃ to obtain a first solvent;
(2) adding a corrosion inhibitor into deionized water with the weight of 3-5 times, raising the temperature to 60-70 ℃, stirring for 8 minutes at 100 r/min, dropwise adding an ammonia water solution with the weight percentage concentration of 8%, adjusting the pH to 11-12, standing and reacting for 30 minutes at the temperature, then mixing with the solvent I in the step (1), and stirring for 2-3 minutes at 1000 r/min to obtain a solvent II;
(3) mixing the solvent oil C14-16 and the n-alkane solvent oil, adding the mixture into a blending tank, stirring the mixture for 20 minutes at normal temperature, adding the solvent II, stirring the mixture evenly, adding the hydrogenated aromatic hydrocarbon, stirring the mixture for 3 to 6 minutes at the temperature of between 50 and 60 ℃, dehydrating the mixture, and neutralizing the pH value to between 7 and 8 to obtain the finished product of the jonquil oil for electric spark mirror machining.
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| CN201810775349.0A CN109054942B (en) | 2018-07-16 | 2018-07-16 | Long-life engine oil for electric spark mirror surface machining |
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| CN201810775349.0A CN109054942B (en) | 2018-07-16 | 2018-07-16 | Long-life engine oil for electric spark mirror surface machining |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708422A (en) * | 1971-01-29 | 1973-01-02 | Cities Service Oil Co | Electric discharge machining fluid |
| EP0221422A1 (en) * | 1985-10-18 | 1987-05-13 | SODICK & CO. LTD. | Electrical discharge machining medium |
| CN101161797A (en) * | 2007-09-28 | 2008-04-16 | 北京东兴润滑剂有限公司 | Water-soluble discharging medium compound for electrospark wire-electrode cutting |
| CN101214567A (en) * | 2008-01-08 | 2008-07-09 | 常熟市周行润达化工厂 | Electric spark processing liquid |
| CN105925349A (en) * | 2016-04-22 | 2016-09-07 | 浙江模德石化有限公司 | EDM oil for mirror EDM and preparation method therefor |
| CN106753714A (en) * | 2016-12-10 | 2017-05-31 | 钦州学院 | A kind of electric spark processing liquid and preparation method thereof |
-
2018
- 2018-07-16 CN CN201810775349.0A patent/CN109054942B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708422A (en) * | 1971-01-29 | 1973-01-02 | Cities Service Oil Co | Electric discharge machining fluid |
| EP0221422A1 (en) * | 1985-10-18 | 1987-05-13 | SODICK & CO. LTD. | Electrical discharge machining medium |
| CN101161797A (en) * | 2007-09-28 | 2008-04-16 | 北京东兴润滑剂有限公司 | Water-soluble discharging medium compound for electrospark wire-electrode cutting |
| CN101214567A (en) * | 2008-01-08 | 2008-07-09 | 常熟市周行润达化工厂 | Electric spark processing liquid |
| CN105925349A (en) * | 2016-04-22 | 2016-09-07 | 浙江模德石化有限公司 | EDM oil for mirror EDM and preparation method therefor |
| CN106753714A (en) * | 2016-12-10 | 2017-05-31 | 钦州学院 | A kind of electric spark processing liquid and preparation method thereof |
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Denomination of invention: A long-life engine oil for EDM mirror machining Effective date of registration: 20220701 Granted publication date: 20210525 Pledgee: Bank of China Limited Guangzhou Pearl River Branch Pledgor: GUANGZHOU CAMAROL LUBRICATING OIL CO.,LTD. Registration number: Y2022980009709 |
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