CN116103079A - Multi-working-condition adaptive total-synthesis cutting fluid and preparation method thereof - Google Patents
Multi-working-condition adaptive total-synthesis cutting fluid and preparation method thereof Download PDFInfo
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- CN116103079A CN116103079A CN202211325542.7A CN202211325542A CN116103079A CN 116103079 A CN116103079 A CN 116103079A CN 202211325542 A CN202211325542 A CN 202211325542A CN 116103079 A CN116103079 A CN 116103079A
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- parts
- cutting fluid
- acid
- working
- corrosion inhibitor
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Abstract
The invention relates to a multi-working-condition adaptive total-synthesis cutting fluid and a preparation method thereof, comprising the following steps: 12-20 parts of organic alcohol amine, 1-3 parts of boric acid, 1-3 parts of dodecandioic acid, 0.3-0.8 part of ethylenediamine tetraacetic acid, 1-4 parts of tricarboxylic acid antirust agent, 6-12 parts of amidated modified unsaturated fatty glyceride, 2-8 parts of emulsion lubricant, 0.2-0.8 part of combined corrosion inhibitor, 0.5-3 parts of bactericide, 0.1-0.5 part of polyether modified silicon defoamer and 50-75 parts of water. The invention also discloses a preparation method of the total synthesis cutting fluid. Compared with the existing cutting fluid, the invention can meet the lubricating and corrosion-preventing requirements of machining modes such as numerical control machine tools, gantry machining centers, grinding machines and the like of ferrous metals, copper alloys and aluminum alloy materials by adding the amidation modified unsaturated fatty glyceride and the special emulsifying lubricant and matching and combining the corrosion inhibitors, and meanwhile, the cutting fluid does not contain any toxic substances and does not cause harm to the environment.
Description
Technical Field
The invention relates to the field of multi-working-condition adaptive total-synthesis cutting fluid. More particularly, the invention relates to a multi-working-condition adaptive total-synthesis cutting fluid and a preparation method thereof.
Background
The cutting fluid is a necessary condition for realizing precision, high efficiency and low cost in the metal processing process, and is a consumption type auxiliary material with large dosage and wide application range. Cutting fluids can be divided into oil-based cutting fluids and water-based cutting fluids by composition. The oil-based cutting fluid does not need to be diluted when being used, has better lubricity than the water-based cutting fluid, but has poor cooling effect. Meanwhile, the addition amount of the base oil reaches 50-90%, so that the method has the limitations of easy rancidity and deterioration, difficult waste liquid treatment, high use cost and the like. The water-based cutting fluid can be divided into emulsion, microemulsion and total synthetic fluid according to the shape of diluent, and the total synthetic cutting fluid is widely applied and researched due to excellent lubricating, cooling, cleaning, rust prevention and corrosion resistance.
In recent years, with the rapid development of the machining manufacturing industry, the processing of single products and single materials has been relatively rare. The same machine tool needs to process various metals and parts, and if different types of cutting fluids are used, the purchase, replacement and equipment maintenance costs are increased, and meanwhile, the production efficiency is reduced to a certain extent. The multi-working condition adaptive cutting fluid means universal and dual-purpose, namely, aiming at the diversity and complexity of modern cutting metal processing, the cutting fluid can meet various processing technological requirements of two or more metals.
The Chinese patent with the publication number of CN 109337751B discloses a general cutting fluid which comprises the following components: 300-400 parts of mineral oil, 65-73 parts of vegetable oleic acid, 40-60 parts of alcohol amine, 102-160 parts of preservative, 55-80 parts of surfactant, 2-6 parts of coupling agent, 5-10 parts of bactericide, 1-3 parts of defoamer and 400-500 parts of water. The cutting fluid does not contain nitrite and sulfide, has excellent hard water resistance, and can be applied to machining of various CNCs, gantry numerical control, drilling machines and grinding machines. However, the added 150SN mineral oil-based lubricating oil belongs to class I mineral base oil, has a biodegradability index (BDI) value of 42.3 and belongs to a difficult biodegradable substance. Meanwhile, the cutting fluid is easy to be influenced by various external factors, and the cutting fluid is easy to be spoiled and deteriorated due to bacteria breeding, so that the service defects of short service cycle and high waste liquid treatment cost are caused.
The Chinese patent of invention with publication number CN 104403769A discloses a multifunctional cutting fluid and a preparation method thereof, wherein the multifunctional cutting fluid comprises the following components: 30-40% of mineral oil, 5-12% of triethanolamine, 3-8% of laurinol polyoxyethylene ether, 10-15% of antirust agent, 1-5% of lubricant, 1-3% of bactericide, 0.5-1% of corrosion inhibitor, 1-3% of pH regulator and the balance of water. The cutting fluid has good lubricity and rust resistance, and has remarkable effects of improving the surface finish of a workpiece and reducing the abrasion of a cutter. But the cutting fluid has poor corrosion inhibition effect on active metals such as aluminum, magnesium and the like.
Disclosure of Invention
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a preferred embodiment of the present invention provides a multi-station adaptive total synthetic cutting fluid, comprising the following raw materials in parts by weight:
according to a preferred embodiment of the present invention, in the multi-working-condition adaptive total synthesis cutting fluid, the organic alcohol amine is composed of triethanolamine and monoethanolamine in a weight ratio of 1:0.2-0.4.
According to a preferred embodiment of the present invention, in the multi-working-condition adaptive total synthesis cutting fluid, the weight ratio of the boric acid to the monoethanolamine is 1:1-1.5.
According to a preferred embodiment of the present invention, in the multi-working-condition adaptive total synthesis cutting fluid, the emulsifying lubricant is a self-emulsifying ester of fatty acid polyethylene glycol ester containing an ester group and a carboxyl group in a molecular structure.
According to a preferred embodiment of the invention, in the multi-working-condition adaptive total-synthesis cutting fluid, the combined corrosion inhibitor consists of copper corrosion inhibitor benzotriazole, aluminum corrosion inhibitor octyl phosphonic acid and siloxane ketone in weight percentages of 40%, 30% and 30% respectively.
According to a preferred embodiment of the present invention, in the multi-working-condition-adaptive total synthetic cutting fluid, the bactericide is one or more of a tri-dan oil, a p-hydroxybenzoate ester and an ethylene glycol hemiacetal.
In one aspect, a preferred embodiment of the present invention provides a method for preparing the multi-working-condition adaptive total synthetic cutting fluid, comprising the steps of:
step A, taking 12-20 parts of organic alcohol amine, 1-3 parts of boric acid, 0.3-0.8 part of ethylenediamine tetraacetic acid, 1-3 parts of dodecanedioic acid, 1-4 parts of tricarboxylic acid antirust agent and 15-30 parts of water according to parts by weight, mixing, pouring the mixture into a reactor, heating to 50-80 ℃, starting stirring at 70-200rpm/min, and reacting for 30-60 min to obtain a mixture A;
and (B) step (B): mixing and stirring the mixture A prepared in the step A, 6-12 parts of amidated modified unsaturated fatty glyceride, 2-8 parts of an emulsifying lubricant and 0.2-0.8 part of a combined corrosion inhibitor for 30-60 min at a stirring speed of 70-200rpm/min to obtain a mixture B;
step C: and B, mixing and stirring the mixture B prepared in the step B, 0.5-3 parts of bactericide, 0.1-0.5 part of polyether modified silicon defoamer and 35-45 parts of water for 30-60 min at a stirring speed of 70-200rpm/min to obtain the target product multi-station adaptive total-synthesis cutting fluid.
The invention at least comprises the following beneficial effects:
(1) The cutting fluid provided by the invention has excellent oxidation resistance through amidation modification of unsaturated fatty glyceride, has lubricating and rust-preventing effects in the cutting fluid, and can improve the service life of the cutting fluid.
(2) The traditional total-synthesis cutting fluid is mainly composed of polyether, and the problems of poor lubricity, adhesion of polyether precipitation and metal scraps and great difficulty in waste liquid treatment are generally existed. The emulsion lubricant in the formula of the invention is a fatty acid polyethylene glycol ester type self-emulsifying ester containing ester groups and carboxyl groups. In the self-emulsifying ester molecular structure, as one end of the chain has polar groups, the symmetry and charge distribution of the structure are changed, so that the self-emulsifying ester molecular structure becomes a polar molecule with heterogeneous charges at two ends. In the metal cutting process, polar molecules migrate to the metal-cutting fluid interface through the cutting fluid, the polar base end of the polar molecules and the metal form a firm adsorption film, and the other end (CH) 3 ) Because the structure of the modified unsaturated fatty glyceride is similar to that of the amidation modified unsaturated fatty glyceride in the formula, the modified unsaturated fatty glyceride can be fully compatible with the amidation modified unsaturated fatty glyceride, and therefore, a single-molecule adsorption film layer formed by polar molecules is formed on a metal-cutting fluid interface. Based on CH 3 The bonding energy of the ends is weaker, and when the adsorption film layer is sheared, CH 3 The combination point is broken at first and slides in parallel with the interface, thereby playing an antifriction role and playing an excellent lubrication characteristic. In addition, the self-emulsifying ester structure does not contain polyoxyethylene ether chain segments, sulfur, phosphorus, chlorine and other elements, and can have certain foam resistance and hard water resistance when being added into cutting fluid, so that the self-emulsifying ester structure can adapt to various water quality conditions in different areas and is environment-friendly.
(3) In the invention, the combined corrosion inhibitor comprises the following components in percentage by weight: 40% of copper corrosion inhibitor benzotriazole, 30% of aluminum corrosion inhibitor octyl phosphonic acid and 30% of silicone. The combined corrosion inhibitor has wide application range and good corrosion inhibition effect on active metals such as aluminum and the like. Wherein, the organic alcohol amine is a common antirust additive for preparing water-based cutting fluid, and has antirust effect on steel and cast iron materials; but has corrosiveness to copper, aluminum and alloys thereof, but the benzotriazole in the combined corrosion inhibitor has good corrosion inhibition effect to copper and copper alloys, but has no corrosion inhibition effect to aluminum and alloys thereof basically, so that the corrosion inhibitors of aluminum, namely octyl phosphonic acid and siloxane are introduced, so that the corrosion inhibitors in the formula have corrosion inhibition effect to copper, aluminum and alloys thereof.
(4) The prepared total synthetic cutting fluid has no layering, no precipitation and uniform liquid, and all performance indexes such as the lubricating property, the rust resistance, the defoaming property and the like of the diluent meet the technical requirements of the synthetic cutting fluid (GB/T6144-2010). Meanwhile, the cutting fluid does not contain any toxic substances, does not pollute the environment, and reduces the subsequent treatment cost of the cutting fluid.
(5) According to the invention, the amidation modified unsaturated fatty glyceride and a special emulsifying lubricant (fatty acid polyethylene glycol ester type self-emulsifying ester containing ester groups and carboxyl groups) are added, and a combined corrosion inhibitor (40% benzotriazole, 30% octyl phosphonic acid and 30% siloxane) is compatible, so that the lubricating corrosion-resistant requirements of mechanical processing forms such as a numerical control machine tool, a gantry machining center and a grinding machine of ferrous metal, copper alloy and aluminum alloy materials can be met, and the use effect of multiple working condition adaptability is achieved. Meanwhile, the composite material does not contain any toxic substances, does not cause harm to the environment, and has application prospect of industrial mass production.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic block diagram of a preparation method of a multi-working condition adaptive total synthetic cutting fluid in an embodiment of the invention.
FIG. 2 is a schematic representation of the molecular structure of a self-emulsifying ester in another embodiment of the present invention.
FIG. 3 is a graph of LY12 aluminum corrosion tests of examples 1-6 of the present invention.
FIG. 4 is a graph of LY12 aluminum corrosion tests of comparative examples 1 and 2 of the present invention.
FIG. 5 is a graph of LY12 aluminum corrosion test of comparative example 3 of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Example 1
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 1 example 1 composition
| Raw materials | Weight/g |
| Organic alcohol amine | 18 |
| Boric acid | 2 |
| Ethylenediamine tetraacetic acid | 0.5 |
| Dodecadibasic acid | 2 |
| Ternary carboxylic acid antirust agent | 2 |
| Water and its preparation method | 20 |
| Amidation modified unsaturated fatty glyceride | 8 |
| Self-emulsifying esters | 2 |
| Combined corrosion inhibitor | 0.2 |
| Sandan oil | 0.5 |
| Polyether modified silicon defoamer | 0.1 |
| Water and its preparation method | 44.7 |
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (20 g) in Table 1 were mixed, heated to 70℃and reacted at a stirring speed of 70rpm/min. The reaction was continued for 30min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 30min, wherein the stirring speed is 70rpm/min. After the completion, the Sandan oil, the polyether modified silicon defoamer and water (44.7 g) were added thereto, and stirring was continued for 30 minutes to obtain example 1.
Example 2
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 2 example 2 composition
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (24.1 g) in Table 2 were mixed, heated to 60℃and reacted at a stirring speed of 100rpm/min. The reaction was carried out for 45min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 45min, wherein the stirring speed is 100rpm/min. After completion, parahydroxybenzoate, polyether-modified silicone defoamer and water (43.6 g) were added thereto, and stirring was continued for 30 minutes to obtain example 2.
Example 3
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 3 example 3 composition
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (21.4 g) in Table 3 were mixed, heated to 80℃and reacted at a stirring speed of 150rpm/min. The reaction was carried out for 50min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 55min, wherein the stirring speed is 150rpm/min. After completion, ethylene glycol hemiacetal, polyether-modified silicon defoamer and water (40.5 g) were added thereto, and stirring was continued for 40 minutes to obtain example 3.
Example 4
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 4 example 4 composition
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (16.9 g) in Table 4 were mixed, heated to 80℃and reacted at a stirring speed of 180rpm/min. The reaction was carried out for 35min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 45min, wherein the stirring speed is 180rpm/min. After completion, the Sandan oil, the parahydroxybenzoate ester, the polyether modified silicone defoamer and water (38.2 g) were added thereto, and stirring was continued for 30min to obtain example 4.
Example 5
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 5 example 5 composition
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (18.3 g) in Table 5 were mixed, heated to 70℃and reacted at a stirring speed of 80rpm/min. The reaction was carried out for 45min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 50min, wherein the stirring speed is 80rpm/min. After completion, the Sandan oil, ethylene glycol hemiacetal, polyether-modified silicon defoamer and water (36.1 g) were added thereto, and stirring was continued for 40min to obtain example 5.
Example 6
The embodiment provides a multi-working condition adaptive total synthetic cutting fluid, the composition components of which are shown in the following table
TABLE 6 example 6 composition
| Raw materials | Weight/g |
| Organic alcohol amine | 19 |
| Boric acid | 2.5 |
| Ethylenediamine tetraacetic acid | 0.8 |
| Dodecadibasic acid | 3 |
| Ternary carboxylic acid antirust agent | 4 |
| Water and its preparation method | 15.2 |
| Amidation modificationUnsaturated fatty acid glyceride | 12 |
| Self-emulsifying esters | 6 |
| Combined corrosion inhibitor | 0.8 |
| Sandan oil | 0.2 |
| Parabens | 0.3 |
| Ethylene glycol hemiacetal | 0.5 |
| Polyether modified silicon defoamer | 0.5 |
| Water and its preparation method | 35.2 |
The organic alcohol amine, boric acid, ethylenediamine tetraacetic acid, dodecanedioic acid, a tricarboxylic acid antirust agent, and water (15.2 g) in Table 6 were mixed, heated to 50℃and reacted at a stirring speed of 90rpm/min. The reaction was carried out for 35min and the heating was turned off. Then adding the amidated modified unsaturated fatty glyceride, the self-emulsifying ester and the combined corrosion inhibitor into the mixture, mixing and stirring for 30min, wherein the stirring speed is 80rpm/min. After completion, the Sandan oil, parahydroxybenzoate, ethylene glycol hemiacetal, polyether-modified silicone defoamer and water (35.2 g) were added thereto, and stirring was continued for 40min to obtain example 6.
Preparation of metal cutting fluid in comparative examples 1-2:
the components were mixed according to the formulation of Table 7 (i.e., examples 1 and 2 of the publication No. CN 104403769A mentioned in the background of the invention)
Table 7 formulation of Metal cutting fluid in comparative examples 1-2
| Raw materials | Comparative example 1 weight/g | Comparative example 2 weight/g |
| Mineral oil | 30 | 33 |
| Triethanolamine salt | 5 | 7 |
| Laurinol polyoxyethylene ether | 3 | 5 |
| Rust inhibitor | 10 | 12 |
| Lubricant | 1 | 3 |
| Bactericide | 1 | 2 |
| Corrosion inhibitor | 0.5 | 0.7 |
| PH regulator | 1 | 2 |
| Water and its preparation method | 48.5 | 35.3 |
Comparative example 3
The self-emulsifying ester and the combined corrosion inhibitor in example 6 are replaced by equivalent polyether and benzotriazole, and the specific formula is shown in the following table:
table 8 formulation of Metal cutting fluid in comparative example 3
Table 9 results of performance tests for examples 1 to 6, comparative examples 1, 2, 3:
as is clear from Table 9, the multi-working fluid adaptive cutting fluids of examples 1 to 6 prepared according to the formulation in the present invention were at maximum seizure-free load P b The values are all greater than 540N for 10minAfter defoaming experiments, the residual foam at the interface was less than 1ml, and in addition, the cutting fluid in example 6, in which the self-emulsifying ester and the combined corrosion inhibitor were replaced with polyether and benzotriazole (comparative example 3), was used at maximum no-seizing P B The values, the corrosion inhibition effect on aluminum are markedly inferior to those of example 6. Meanwhile, the maximum seizure-free load, the surface tension and the defoaming property of the environment-friendly cutting fluids in comparative examples 1 to 2 are significantly lower than those of examples and comparative example 3, and are more corrosive to LY12 aluminum alloy.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. The multi-working-condition adaptive total-synthesis cutting fluid is characterized by comprising the following raw materials in parts by weight:
2. the multi-working-condition adaptive total synthesis cutting fluid according to claim 1, wherein the organic alcohol amine consists of triethanolamine and monoethanolamine in a weight ratio of 1:0.2-0.4.
3. The multi-working-condition adaptive total synthetic cutting fluid according to claim 2, wherein the weight ratio of boric acid to monoethanolamine is 1:1-1.5.
4. The multi-working-condition adaptive total synthetic cutting fluid according to claim 1, wherein the emulsifying lubricant is a self-emulsifying ester of fatty acid polyethylene glycol ester containing ester groups and carboxyl groups in a molecular structure.
5. The multi-working-condition adaptive total synthetic cutting fluid according to claim 1, wherein the combined corrosion inhibitor is composed of copper corrosion inhibitor benzotriazole, aluminum corrosion inhibitor octyl phosphonic acid and siloxane ketone in a weight percentage of 40%, 30% and 30% respectively.
6. The multi-condition adaptive fully synthetic cutting fluid according to claim 1, wherein the bactericide is one or more of a tridan oil, a paraben and a glycol hemiacetal.
7. The method for preparing a multi-station adaptive total synthetic cutting fluid according to any one of claims 1 to 6, comprising the steps of:
step A, taking 12-20 parts of organic alcohol amine, 1-3 parts of boric acid, 0.3-0.8 part of ethylenediamine tetraacetic acid, 1-3 parts of dodecanedioic acid, 1-4 parts of tricarboxylic acid antirust agent and 15-30 parts of water according to parts by weight, mixing, pouring the mixture into a reactor, heating to 50-80 ℃, starting stirring at 70-200rpm/min, and reacting for 30-60 min to obtain a mixture A;
and (B) step (B): mixing and stirring the mixture A prepared in the step A, 6-12 parts of amidated modified unsaturated fatty glyceride, 2-8 parts of an emulsifying lubricant and 0.2-0.8 part of a combined corrosion inhibitor for 30-60 min at a stirring speed of 70-200rpm/min to obtain a mixture B;
step C: and B, mixing and stirring the mixture B prepared in the step B, 0.5-3 parts of bactericide, 0.1-0.5 part of polyether modified silicon defoamer and 35-45 parts of water for 30-60 min at a stirring speed of 70-200rpm/min to obtain the target product multi-station adaptive total-synthesis cutting fluid.
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| PCT/CN2022/134431 WO2024087293A1 (en) | 2022-10-27 | 2022-11-25 | Multi-working-condition adaptive fully synthetic cutting fluid and preparation method therefor |
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| US4921624A (en) * | 1988-06-03 | 1990-05-01 | Ferro Corporation | Modified fatty amides and sulfurized fatty oils as lubricant additives |
| CN104017636B (en) * | 2014-06-06 | 2016-07-13 | 清华大学 | A kind of complete synthesis metal grinding fluid of water solublity |
| CN105349226A (en) * | 2015-11-19 | 2016-02-24 | 苏州捷德瑞精密机械有限公司 | Emulsified cutting fluid for aluminium alloy and preparation method thereof |
| CN106479654A (en) * | 2016-09-06 | 2017-03-08 | 深圳市宏达威表面处理技术有限公司 | Aqueous cutting fluid |
| CN106833853A (en) * | 2017-01-11 | 2017-06-13 | 李弟和 | Water-soluble metalworking liquid |
| CN109054938A (en) * | 2018-06-14 | 2018-12-21 | 东风商用车有限公司 | A kind of micro emulsion cutting fluid and preparation method thereof |
| CN110684585B (en) * | 2018-07-05 | 2021-10-29 | 厦门油典集团有限公司 | Micro-emulsion type cutting fluid and preparation method thereof |
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