WO2019189148A1

WO2019189148A1 - Water-soluble metalworking oil agent and metalworking method

Info

Publication number: WO2019189148A1
Application number: PCT/JP2019/012808
Authority: WO
Inventors: 知晃岡野; 順英谷野
Original assignee: 出光興産株式会社
Priority date: 2018-03-30
Filing date: 2019-03-26
Publication date: 2019-10-03
Also published as: CN111886326B; JPWO2019189148A1; CN111886326A

Abstract

The present invention relates to a water-soluble metalworking oil agent and a metalworking method that involves the use of said oil agent when working a workpiece comprising metal. This water-soluble metalworking oil agent is characterized by comprising (A) a carboxylic acid having 8-18 carbon atoms, (B) at least one substance selected from the group consisting of alkylene oxide adducts of polhydric alcohols, polymerized fatty acids, and polyalkelyne glycol, (C) an amine compound comprising a trialkanomaline and a cyclohexyl dialkanolamine, and (D) water. A preferred embodiment of the present invention makes it possible to provide: a water-soluble metalworking oil agent exhibiting excellence in at least one of workability, stock solution stability, rust resistance, decay resistance, metal discoloration prevention properties, and wettability; and a metalworking method.

Description

Water-soluble metalworking fluid and metalworking method

The present invention relates to a water-soluble metalworking fluid and a production method thereof, a water-soluble metalworking fluid, a metalworking method, and the like.

When plastic processing a metal material such as an aluminum plate or a copper plate, high workability is required. Specifically, it can be machined with dimensional accuracy according to the product design, and it can be machined at high speed to improve productivity, metal distortion during machining does not adversely affect the product performance after machining, and tool wear It is necessary that the tool can be used over a long period of time. Therefore, a lubricant (metal working oil) is often used during plastic working of a metal material.
Conventionally, oil-based metalworking fluids have been used as metalworking fluids, but since they have excellent cooling properties and infiltration properties, there is no risk of fire due to high temperature drying, and the environmental impact is low, Metallic processing oils are frequently used (for example, Patent Documents 1 and 2).

JP 2010-209246 A International Publication No. 2014/157572

These water-soluble metalworking fluids have excellent effects, but there is still room for improvement in terms of workability (low friction coefficient). Under such circumstances, it is desired to provide a water-soluble metalworking fluid that is excellent in workability, and further excellent in stock solution stability, rust resistance, rot resistance, metal discoloration prevention, wettability, and the like.

The present invention relates to the following water-soluble metalworking fluid and production method thereof, water-soluble metalworking fluid, metalworking method, and the like.
[1] (A) a carboxylic acid having 8 to 18 carbon atoms;
(B) at least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols;
(C) an amine compound containing trialkanolamine and cyclohexyl dialkanolamine; and (D) a water-soluble metalworking fluid containing water.
[2] The water-soluble metalworking fluid according to [1], wherein the total content of the component (B) is 0.1 to 20 by mass ratio with respect to the content of the component (A).
[3] The water-soluble metal processing according to [1] or [2], wherein the total content of the component (C) is 1 to 3 by mass ratio with respect to the content of the component (A). Oil.
[4] The water-soluble metal according to any one of [1] to [3], wherein the content of the component (D) is 20 to 50% by mass based on the total amount of the water-soluble metalworking fluid. Processing oil.
[5] The water-soluble metalworking fluid according to any one of [1] to [4], wherein the component (B) includes an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid, and a polyalkylene glycol.
[6] The water-soluble metalworking fluid according to any one of [1] to [5], further comprising (E) at least one selected from the group consisting of acidic phosphates and phosphites.
[7] The water-soluble metalworking fluid according to [6], wherein the total content of the component (E) is 0.1 to 10 by mass ratio with respect to the content of the component (A).
[8] The water-soluble metalworking fluid according to any one of [1] to [7], further comprising (F) glycols.
[9] The water-soluble metal processing according to [8], wherein the total content of the component (F) is 0.01 to 10% by mass with respect to the content of the component (A). Oil.
[10] The water-soluble metalworking fluid according to any one of [1] to [9], further comprising (G) a corrosion-resistant agent.
[11] The water-soluble metalworking fluid according to any one of [1] to [10], further comprising (H) a preservative.
[12] The water-soluble metalworking fluid according to any one of [1] to [11], which is for processing aluminum.
[13] (A) a carboxylic acid having 8 to 18 carbon atoms;
(B) at least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols;
(C) An amine compound containing a trialkanolamine and cyclohexyl dialkanolamine; and (D) a method for producing a water-soluble metalworking fluid comprising mixing water.
[14] Water-soluble metal processing comprising the water-soluble metal processing oil according to any one of [1] to [12] and water having a volume ratio of 2 to 300 times that of the water-soluble metal processing oil. liquid.
[15] A metal processing method comprising processing a workpiece made of metal using the water-soluble metal processing oil according to any one of [1] to [12].
[16] A metal processing method including processing a workpiece made of metal using the water-soluble metal processing liquid according to [14].

The present invention provides a water-soluble metal working fluid used when plastic processing a metal material and a water-soluble metal working fluid obtained by diluting it.
The water-soluble metalworking fluid and the water-soluble metalworking fluid of the present invention are excellent in processability and excellent in any one or more of stock solution stability, rustproofing, anticorrosion, metal discoloration prevention and wettability. Therefore, it can be suitably used for plastic working of metal materials. According to a preferred embodiment of the present invention, the water-soluble metalworking fluid and the water-soluble metalworking fluid of the present invention can be suitably used particularly for plastic processing of aluminum such as an aluminum fin material.

Hereinafter, embodiments of the present invention will be described in detail.

1. Water-soluble metalworking fluid The water-soluble metalworking fluid of the present invention is selected from the group consisting of (A) a carboxylic acid having 8 to 18 carbon atoms; (B) an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid, and a polyalkylene glycol. At least one selected from the group consisting of: (C) an amine compound containing trialkanolamine and cyclohexyl dialkanolamine; and (D) water. Hereinafter, each component will be described in detail.

(A) Carboxylic acid having 8 to 18 carbon atoms The carboxylic acid having 8 to 18 carbon atoms used in the present invention is preferably a fatty acid and may be a saturated fatty acid or an unsaturated fatty acid. The fatty acids used here are not limited to those having a straight chain structure, but also include branched isomers. By using a carboxylic acid having 8 to 18 carbon atoms, the water solubility and wettability of the water-soluble metalworking fluid can be improved, and the stability of the stock solution can be improved.
The number of carboxyl groups of the carboxylic acid is not particularly limited, and may be a monocarboxylic acid or a polycarboxylic acid, but from the viewpoint of handleability, 1 to 6 is preferable, 1 to 4 is more preferable, and 1 to 2, that is, a monocarboxylic acid More preferred are acids or dicarboxylic acids.
The carboxylic acid specifically used in the present invention is not limited thereto, but examples thereof include octanoic acid (caprylic acid), 2-ethylhexanoic acid, isooctanoic acid, nonanoic acid (pelargonic acid), isononanoic acid, Decanoic acid (capric acid), isodecanoic acid, neodecanoic acid, undecanoic acid, isoundecanoic acid, dodecanoic acid (lauric acid), isododecanoic acid, tridecanoic acid, isotridecanoic acid, tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), Monocarboxylic acids such as heptadecanoic acid (margaric acid), octadecanoic acid (stearic acid), isostearic acid, 10-undecenoic acid, zomarinic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid;
Dicarboxylic acids such as nonanedioic acid, undecanedioic acid, sebacic acid (decanedioic acid), dodecanedioic acid;
Examples include soybean oil fatty acid, coconut oil fatty acid, and tall oil fatty acid (C18) extracted from fats and oils.

Among these, carboxylic acids having 8 to 16 carbon atoms are preferred from the viewpoints of defoaming property, rust prevention and hard water stability when the oil agent is diluted with water, and carboxylic acids having 8 to 14 carbon atoms. Is more preferable, and a carboxylic acid having 10 to 12 carbon atoms is more preferable. In particular, saturated fatty acids having 10 to 12 carbon atoms are more preferable, lauric acid, decanoic acid, neodecanoic acid (a mixture of octanoic acid, nonanoic acid and decanoic acid), undecanedioic acid, sebacic acid, and dodecanedioic acid are more preferable. Acid, neodecanoic acid, sebacic acid and dodecanedioic acid are particularly preferred.
These carboxylic acids may be used alone or in combination of two or more.

In the water-soluble metalworking fluid of the present invention, (A) the content of the carboxylic acid having 8 to 18 carbon atoms is 1 to 30% by mass based on the total amount of the water-soluble metalworking fluid from the viewpoint of improving wettability. The range is preferable, more preferably 2.5 to 25% by mass, still more preferably 5 to 20% by mass.

(B) At least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols. The water-soluble metalworking fluid of the present invention is an alkylene oxide adduct of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols. It contains at least one selected from the group consisting of alkylene glycols. The water-soluble metalworking fluid of the present invention can have excellent processability (low friction coefficient) by including these components.

(B-1) Alkylene oxide adduct of polyhydric alcohol The alkylene oxide adduct of polyhydric alcohol used in the present invention is not particularly limited as long as alkylene oxide is added to polyhydric alcohol.

Specific examples of the polyhydric alcohol include ethylene glycol, propylene glycol, glycerin, diglycerin, triglycerin, trimethylol alkane (eg, trimethylol ethane, trimethylol propane, trimethylol butane) and 2 to 3 amounts thereof. Body, pentaerythritol, sorbitol, sorbitan and the like. Among them, 1 to 6 valent, more preferably 2 to 5 valent, particularly 3 to 4 valent polyhydric alcohols are preferable, and pentaerythritol and trimethylolpropane are particularly preferable, and pentaerythritol is more preferable.

When producing an alkylene oxide adduct of a polyhydric alcohol, the above polyhydric alcohol may be used as it is, or a compound having an ester group obtained by reacting a part of the hydroxyl groups with a fatty acid may be used. Good. The fatty acid may be linear, branched or cyclic and may be saturated or unsaturated. The number of carbon atoms of the fatty acid is preferably 2 to 24, and more preferably 4 to 20. Specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, and isostearic acid.

Preferred alkylene oxides include ethylene oxide and propylene oxide, with ethylene oxide being particularly preferred. Alkylene oxide may be added to only some of the hydroxyl groups, but it is preferable to add it to all of the hydroxyl groups from the viewpoint of effects.
The addition form of the alkylene oxide part may be random addition or block addition.

The alkylene oxide adduct of the polyhydric alcohol used in the present invention is preferably at least any one from the compound of the following formula (1) to the compound of the following formula (4).

In the above formula (1), R ¹¹ , R ¹² , R ¹³ and R ¹⁴ are each independently an alkylene group having 1 to 5 carbon atoms. e, f, g and h are each independently an integer of 1 to 30.
In the above formula (2), R ⁴ is an alkyl group having 1 to 30 carbon atoms. R ²¹ , R ²² and R ²³ are each independently an alkylene group having 1 to 5 carbon atoms. i, j and k are each independently an integer of 1 to 30.
In the above formula (3), R ⁵ and R ⁶ are each independently an alkyl group having 1 to 30 carbon atoms. R ³¹ and R ³² are each independently an alkylene group having 1 to 5 carbon atoms. l and m are each independently an integer of 1 to 30.
In the above formula (4), R ⁷ , R ⁸ and R ⁹ are each independently an alkyl group having 1 to 30 carbon atoms. R ⁴¹ is an alkylene group having 1 to 5 carbon atoms. n is an integer of 1 to 30.
In the above formula, EO means an ethylene oxide unit.

Among these, from the viewpoint of improving wear resistance, an EO adduct of pentaerythritol or an EO adduct of trimethylolpropane is more preferable.

(B-2) Polymerized Fatty Acids Polymerized fatty acids used in the present invention include fatty acid multimers, polycondensed fatty acids (1) obtained by dehydrating polycondensation of hydroxycarboxylic acids, and alcohols of polycondensed fatty acids (1). And polycondensed fatty acid (2) obtained by dehydrating polycondensation of a functional hydroxyl group and a monovalent carboxylic acid.
The fatty acid multimer is preferably a 1-12 mer of the fatty acid exemplified in component (A), more preferably a 2-10 mer, and even more preferably a 4-8 mer.
Examples of hydroxycarboxylic acid include ricinoleic acid (ricinoleic acid), 12-hydroxystearic acid and the like. When the hydroxycarboxylic acid is heated to, for example, about 200 ° C. in an inert atmosphere, dehydration polycondensation starts and polycondensed fatty acid (1) is obtained. For example, a 1 to 12 mer of hydroxy fatty acid is preferable, a 2 to 10 mer is more preferable, and a 4 to 8 mer is more preferable.
The degree of polycondensation of hydroxycarboxylic acid is adjusted by the reaction time. If reaction time becomes long, an acid value and a hydroxyl value will fall and a fatty acid with a high degree of polycondensation will be obtained. A higher polycondensation fatty acid can be obtained with a higher degree of polycondensation.
The polycondensed fatty acid (2) can be obtained by adding a monovalent carboxylic acid to the dehydrated polycondensate of hydroxycarboxylic acid and performing dehydration polycondensation. The progress of the reaction is confirmed by a decrease in the hydroxyl value. By this reaction, a polycondensed fatty acid having a higher characteristic temperature can be obtained.
The monovalent carboxylic acid used in this reaction may be a saturated carboxylic acid or an unsaturated carboxylic acid, but if a carboxylic acid having a small number of carbon atoms remains as an unreacted substance, it may cause an unpleasant odor or metal corrosion. Since there exists a possibility, C4 or more carboxylic acid is preferable. Saturated carboxylic acids include caproic acid, enanthic acid, caprylic acid, 2-ethylhexanoic acid, pelargonic acid, isononanoic acid, capric acid, neodecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid And lignoceric acid. Examples of unsaturated carboxylic acids include undecylenic acid, oleic acid, elaidic acid, erucic acid, nervonic acid, linoleic acid, γ-linolenic acid, arachidonic acid, α-linolenic acid, stearidonic acid, eicosapentaenoic acid, and docosahexaenoic acid. Can be mentioned.

The acid value of the polymerized fatty acid is not particularly limited, but is preferably 60 mgKOH / g or less, more preferably 50 mgKOH / g or less, and even more preferably 40 mgKOH / g or less from the viewpoint of processability.
The hydroxyl value of the polymerized fatty acid is not particularly limited, but is preferably 50 mgKOH / g or less, more preferably 35 mgKOH / g or less, and even more preferably 20 mgKOH / g or less from the viewpoint of processability.
The weight average molecular weight (Mw) of the polymerized fatty acid is preferably 1000 to 3000, more preferably 1500 to 2500, still more preferably 1600 to 2300, and particularly preferably 1700 to 2200 from the viewpoint of processability.
The acid value of the polymerized fatty acid is a numerical value measured based on JIS K2501: 2003, and the hydroxyl value is a numerical value measured based on JIS K0070: 1992.
In the present specification, the weight average molecular weight (Mw) is a value obtained using polystyrene as a calibration curve, and is measured in detail under the following conditions.
Apparatus: Agilent 1260 HPLC Column: Shodex LF404 × 2 Solvent: Chloroform Temperature: 35 ° C.
Sample concentration: 0.05% Calibration curve: Polystyrene
Detector: Differential refraction detector

(B-3) Polyalkylene glycol The polyalkylene glycol used in the present invention is not particularly limited as long as it is a polymer of alkylene glycol, but at least one polyalkylene glycol represented by the following formula (5) is preferably mentioned. It is done.
R ¹ O— (R′O) _p —H (5)

In the formula (5), R ¹ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. The alkyl group preferably has 1 to 20 carbon atoms, more preferably 1 to 10 carbon atoms, and still more preferably 1 to 5 carbon atoms. When the carbon number of R ¹ is within this range, the water solubility is good, which is preferable.
R′O is an oxide unit selected from PO and EO and may be used as a mixture. However, the molar fraction of EO to PO in R′O (EO / PO) is preferably less than 1, more preferably less than 0.8, more preferably less than 0.8, from the viewpoint of defoaming properties when diluted with water. Preferably it is less than 0.6. From the viewpoint of handleability, p is preferably an integer of 1 to 200, more preferably an integer of 5 to 150, still more preferably an integer of 10 to 100, and particularly preferably an integer of 30 to 60.

The weight average molecular weight of the polyalkylene glycol is preferably 500 to 10000, more preferably 1000 to 5000, and still more preferably 1500 to 3000. When the weight average molecular weight is in the above range, the wettability when diluted with water is good.

Polyalkylene glycols may be used alone or in combination. Polyalkylene glycols may be used in a mixture of various structures having different EO structure or PO structure unit numbers.

In the present invention, as the component (B), at least one selected from the group consisting of an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid, and a polyalkylene glycol is used. These may be used individually by 1 type and may be used in combination of 2 or more type.
According to a preferred embodiment of the present invention, as the component (B), a water-soluble metal having a low friction coefficient and excellent workability is obtained by using a combination of an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid and a polyalkylene glycol. A processing oil can be obtained.

When the alkylene oxide adduct (B-1) of polyhydric alcohol is used, the content of the alkylene oxide adduct of polyhydric alcohol is 0.01 to 20 by mass with respect to the content of the component (A). Is preferable, 0.5 to 10 is more preferable, and 0.1 to 3 is more preferable.
When the polymerized fatty acid (B-2) is used, the content of the polymerized fatty acid is preferably 0.01 to 20 and more preferably 0.5 to 10 in terms of mass ratio with respect to the content of the component (A). 0.1 to 3 is more preferable.
When polyalkylene glycol (B-3) is used, the content of polyalkylene glycol is preferably 0.01 to 20 in terms of mass ratio with respect to the content of component (A), preferably 0.5 to 10 Is more preferable, and 0.1 to 3 is more preferable.
Further, the total content of the component (B) is preferably 0.1 to 20, more preferably 0.5 to 10, and preferably 0.75 to 0.5 by mass ratio with respect to the content of the component (A). 3 is more preferable.
By using in this range, the water-soluble metalworking fluid excellent in workability can be obtained.

(C) Amine compound containing trialkanolamine and cyclohexyl dialkanolamine In the water-soluble metalworking fluid of the present invention, an amine compound containing trialkanolamine and cyclohexyl dialkanolamine is used.

In the trialkanolamine, the three alkanol groups may be the same or different, but each carbon number is preferably independently from 1 to 10, more preferably from 1 to 10, from the viewpoint of water solubility. 6, more preferably 1 to 4. The total number of carbon atoms of the three alkanol groups is preferably 3 to 12, more preferably 4 to 10, and still more preferably 4 to 8, from the viewpoint of water solubility and odor reduction.
Examples of such alkanolamines include triethanolamine, tri-n-propanolamine, tri-i-propanolamine, and tri-n-butanolamine. Among these, triethanolamine is preferable in terms of excellent water solubility.
The trialkanolamine may be used alone or in combination of two or more.

Although it does not specifically limit as a cyclohexyl dialkanolamine, The compound shown by following formula (6) is mentioned preferably.

[Wherein, R is an alkylene group, and q is an integer of 1 to 10.] ]

In formula (6), the alkylene group represented by R is preferably a linear or branched alkylene group such as methylene, ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, nonylene and decylene. Among these, from the viewpoints of water solubility and wettability, ethylene or propylene is preferable, and ethylene is particularly preferable.
In the formula (6), q is an integer of 1 to 10, preferably 1 to 7, and more preferably 1 to 3.
Specific examples of cyclohexyl dialkanolamine include N-cyclohexyldiethanolamine, N-cyclohexyldiisopropanolamine and the like. Of these, N-cyclohexyldiethanolamine is preferably used.
In addition, a cyclohexyl dialkanolamine may be used by 1 type and may be used in combination of 2 or more type.

The content of trialkanolamine is preferably 0.5 to 1.5, more preferably 0.5 to 1, and more preferably 0.875 to 0.9, in terms of mass ratio with respect to the content of component (A). Further preferred.
The content of cyclohexyl dialkanolamine is preferably 0.5 to 1.5, more preferably 0.5 to 1, and more preferably 0.875 to 0.9, in terms of mass ratio with respect to the content of component (A). Is more preferable.
In addition, the total content of the component (C) is preferably 1 to 3, more preferably 1 to 2, and more preferably 1.75 to 1.80 by mass ratio with respect to the content of the component (A). Further preferred.
By using in this range, the water-soluble metalworking fluid excellent in wettability and workability can be obtained.

(D) Water In the present invention, the component (D) is water for preparing the present oil agent (stock solution). (D) Although tap water can also be used as a component, it is preferable to use distilled water or ion-exchange water.
The content of component (D) is the balance, and is preferably 20 to 50% by mass, more preferably 25 to 45% by mass, and still more preferably 30 to 40% by mass based on the total amount of the water-soluble metalworking fluid of the present invention. %.
When the ratio of the component (D) is in the above range, the components (A), (B), and (C) are easily dissolved, and the stock solution can be easily prepared. Moreover, the storage amount and the transport amount as a stock solution can be suppressed, and the handling property is improved.

(E) Acidic phosphate ester and phosphite ester The water-soluble metalworking fluid of the present invention is selected from the group consisting of acidic phosphate ester and phosphite ester as the component (E) from the viewpoint of improving wettability. You may further contain at least 1 sort.
Examples of acidic phosphate esters include monoalkyl acid phosphates, dialkyl acid phosphates, monoalkenyl acid phosphates, dialkenyl acid phosphates, and mixtures thereof. As the alkyl group and alkenyl group in these acidic phosphate esters, those exemplified as the alkyl group and alkynyl group in the phosphate ester can be applied.
Specific examples of the acidic phosphate ester include 2-ethylhexyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, oleyl acid phosphate, tetracosyl acid phosphate, isodecyl acid phosphate, lauryl acid phosphate, tridecyl acid phosphate, stearyl acid Examples thereof include phosphate and isostearyl acid phosphate.
Examples of phosphites include trialkyl phosphites, trialkenyl phosphites, tricycloalkyl phosphites, triaryl phosphites, and triaralkyl phosphites. The alkyl group, alkenyl group, cycloalkyl group, aryl group, and aralkyl group in these phosphites are exemplified as the alkyl group, alkenyl group, cycloalkyl group, aryl group, and aralkyl group in the phosphate ester, respectively. Things can be applied.
Specific examples of phosphites include triethyl phosphite, tributyl phosphite, triphenyl phosphite, tricresyl phosphite, tri (nonylphenyl) phosphite, tri (2-ethylhexyl) phosphite, tridecyl phosphite , Trilauryl phosphite, triisooctyl phosphite, diphenylisodecyl phosphite, tristearyl phosphite, and trioleyl phosphite.
These acidic phosphates and phosphites may be used alone or in combination.
The total content of the component (E) is preferably from 0.1 to 10, more preferably from 0.2 to 1, and even more preferably from 0.50 to 0 by mass ratio with respect to the content of the component (A). .55.

(F) Glycols The water-soluble metalworking fluid of the present invention may further contain glycols from the viewpoint of improving wettability.
Examples of glycols include ethylene glycol, propylene glycol, 1,4-butanediol, hexamethylene glycol, neopentyl glycol, diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol, polyethylene glycol, polypropylene glycol, polyethylene glycol And polypropylene glycol copolymers, and glycol monoalkyls such as polyoxyethylene and polyoxypropylene copolymer glycols, triethylene glycol monobutyl ether, triethylene glycol monomethyl ether, diethylene glycol monobutyl ether and tripropylene glycol monomethyl ether Ether, polyoxyethylene and polyoxypropylene In addition to water-soluble glycols monoalkyl ethers of copolymer include alkylene oxide adducts of acetylene glycol. Among these, an alkylene oxide adduct of acetylene glycol is preferable from the viewpoints of wettability and antifoaming properties.

The alkylene oxide adduct of acetylene glycol functions as a so-called nonionic surfactant, and by incorporating such a specific surfactant, the wettability of the water-soluble metalworking fluid of the present invention is improved. The processing oil easily penetrates into the metal material that is the workpiece.
As the alkylene oxide adduct of acetylene glycol, for example, the alkylene oxide adduct of acetylene glycol described in JP2011-12249A or JP2012-12504A can be suitably used.
Specifically, 2,5,8,11-tetramethyl-6-dodecin-5,8-diol, 5,8-dimethyl-6-dodecin-5,8-diol, 2,4,7,9- Tetramethyl-5-dodecin-4,7-diol, 8-hexadecin-7, 10-diol, 7-tetradecine-6,9-diol, 2,3,6,7-tetramethyl-4-octyne-3, 6-diol, 3,6-diethyl-4-octyne-3,6-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 2,4,7,9-tetramethyl-5-decyne Alkylene oxide adducts to acetylene glycols such as -4,7-diol and 3,6-dimethyl-4-octyne-3,6-diol. Examples of the alkylene oxide include ethylene oxide (EO) and propylene oxide (PO).

From the viewpoint of improving wettability, the alkylene oxide adduct of acetylene glycol preferably has an HLB (Hydrophilic-Lipophilic Balance) of 4 to 12, more preferably 4 to 9, and still more preferably 4 to 8. When the HLB is within this range, solubility in water is improved. Further, the wettability of the present processing oil is further improved and foaming is difficult. Moreover, the contamination suppression effect is also acquired.
Moreover, in one Embodiment of this invention, it is preferable that the alkylene oxide adduct of acetylene glycol contains the 2 types of said adduct whose HLB difference is one or more. When the processing oil contains the adduct having an HLB difference of 1 or more, the affinity for both water and the metal material is improved, so that the wettability to the metal material is further improved. Therefore, the difference in HLB is more preferably 2 or more, and further preferably 3 or more. The “HLB value” means a value of HLB (Hydrophilic-Lipophilic Balance) calculated by the Griffin method.

Glycols may be used alone or in combination of two or more.
The total content of glycols is preferably 0.01 to 10, more preferably 0.1 to 1, and still more preferably 0.55 to 0.60 in terms of mass ratio with respect to the content of component (A). It is. Within this range, the effect of improving the wettability with respect to the metal material can be sufficiently exhibited.

(G) Corrosion-resistant agent (metal deactivator)
The water-soluble metalworking fluid of the present invention may further contain a corrosion-resistant agent from the viewpoint of improving the corrosion resistance.
Examples of the anti-corrosion agent include benzotriazole, imidazoline, pyrimidine derivatives, thiadiazole, thiadiazole, and phosphate esters.
Phosphate esters include trialkyl phosphates, trialkenyl phosphates, tricycloalkyl phosphates, triaryl phosphates, tricycloalkyl phosphates, triaralkyl phosphates, alkyl ether phosphates (e.g., polyoxyethylene alkyl ether phosphates, poly Oxyethylene alkylphenyl ether phosphate ester) and the like.
In these phosphate esters, the alkyl group is a linear or branched alkyl group having 1 to 18, preferably 1 to 12 carbon atoms, such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group. , Various butyl groups, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various undecyl groups, various dodecyl groups, various tridecyl groups, various tetradecyl groups, various pentadecyl groups, various Examples include a hexadecyl group, various heptadecyl groups, and various octadecyl groups.
The alkenyl group is preferably a linear or branched alkenyl group having 2 to 18 carbon atoms, more preferably 2 to 12 carbon atoms, such as a vinyl group, an allyl group, a propenyl group, an isopropenyl group, various butenyl groups, Various pentenyl groups, various hexenyl groups, various heptenyl groups, various octenyl groups, various nonenyl groups, various decenyl groups, various undecenyl groups, various dodecenyl groups, various tridecenyl groups, various tetradecenyl groups, various pentadecenyl groups, various hexadecenyl groups, various heptadecenyl groups Groups and various octadecenyl groups.
The cycloalkyl group is preferably a cycloalkyl group having 3 to 18 carbon atoms, more preferably 6 to 12 carbon atoms, such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, an adamantyl group. Group, bicyclohexyl group, decahydronaphthyl group and the like.
The aryl group is preferably a phenyl group having 6 to 18 carbon atoms, more preferably 6 to 12 carbon atoms, more preferably a naphthylphenyl group, a biphenylyl group, a terphenylyl group, a biphenylenyl group, a naphthyl group, a phenylnaphthyl group, an acenaphthylenyl group, Anthryl group, benzoanthryl group, aceanthryl group, phenanthryl group, benzophenanthryl group, phenalenyl group, fluorenyl group, dimethylfluorenyl group and the like can be mentioned.
The aralkyl group is preferably an aralkyl group having 7 to 18 carbon atoms, more preferably 7 to 12 carbon atoms, such as benzyl group, tolyl group, ethylphenyl group, phenethyl group, dimethylphenyl group, trimethylphenyl group, naphthylmethyl group. Etc.
One of these may be used alone, or two or more may be used in combination.
The total content of the anti-corrosion agent is preferably 0.01 to 0.3, more preferably 0.05 to 0.2, and still more preferably 0.0 to 0.3 by mass with respect to the content of the component (A). 08 to 0.17. Within this range, the effect of improving corrosion resistance can be sufficiently exhibited.

(H) Preservative (bactericidal agent)
The water-soluble metalworking fluid of the present invention may further contain a preservative from the viewpoint of improving the preservability.
Examples of preservatives include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, , 2-benzoisothiazolin-one and other isothiazolone preservatives, hexahydro-1,3,5-tris (2-hydroxyethyl) -s-triazine and other triazine preservatives, 2-pyridinethiol sodium-1-oxide ( Pyrithione sodium), pyridine / quinoline preservatives such as 8-oxyquinoline, dithiocarbamate preservatives such as sodium dimethyldithiocarbamate, 2,2-dibromo-3-nitrilopropionamide, 2-bromo-2-nitro-1 , 3-propanediol, 2,2-dibromo-2-nitroethanol, 1,2-dibro Organic bromine preservatives such as -2,4-dicyanobutane, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, potassium sorbate, sodium dehydroacetate, salicylic acid, bis (2-pyridyldithio-1-oxide) zinc, And bis (2-sulfidepyridine-1-olato) copper.
The total content of the preservatives is preferably 0.001 to 1, more preferably 0.005 to 0.1, and still more preferably 0.01 to 0 in terms of mass ratio with respect to the content of component (A). .05. Within this range, the effect of improving antiseptic properties can be sufficiently exhibited.

The water-soluble metalworking fluid of the present invention can further contain other components as long as the object of the present invention is not impaired. For example, extreme pressure agents, oily agents, antifoaming agents, surfactants, antioxidants and the like can be mentioned.

Examples of extreme pressure agents include sulfur-based extreme pressure agents, phosphorus-based extreme pressure agents, extreme pressure agents containing sulfur and metal, and extreme pressure agents containing phosphorus and metal. These extreme pressure agents can be used alone or in combination of two or more. Any extreme pressure agent may be used as long as it contains a sulfur atom or a phosphorus atom in the molecule and can exhibit load resistance and wear resistance. Examples of extreme pressure agents containing sulfur in the molecule include sulfurized fats and oils, sulfurized fatty acids, sulfurized esters, sulfurized olefins, dihydrocarbyl polysulfides, thiadiazole compounds, alkylthiocarbamoyl compounds, triazine compounds, thioterpene compounds, dialkylthiodipropionate compounds, etc. Can be mentioned. From the standpoint of blending effect, the amount of these extreme pressure agents is from 0.05% by mass to 0.5% by mass based on the final diluent (coolant). Blended with processing oil.

Examples of the oleaginous agent include aliphatic compounds such as aliphatic alcohols and fatty acid metal salts, and ester compounds such as polyol esters, sorbitan esters, and glycerides. From the viewpoint of the blending effect, the blending amount of these oil-based agents is blended with the water-soluble metalworking fluid as a stock solution so as to be about 0.2% by mass or more and 2% by mass or less on the basis of the coolant.

Examples of antifoaming agents include methyl silicone oil, fluorosilicone oil, and polyacrylate. The blending amount of these antifoaming agents is blended with the water-soluble metalworking fluid as a stock solution so that the blending amount is about 0.004 mass% or more and 0.08 mass% or less on the basis of the blending effect.

Examples of the surfactant include an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant. Examples of the anionic surfactant include alkylbenzene sulfonate and alpha olefin sulfonate. Examples of the cationic surfactant include quaternary ammonium salts such as alkyltrimethylammonium salts, dialkyldimethylammonium salts, and alkyldimethylbenzylammonium salts. Nonionic surfactants include ethers such as polyoxyethylene alkyl ethers and polyoxyethylene alkylphenyl ethers, esters such as sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene fatty acid esters, and fatty acid alkanolamides. Such amides. Examples of amphoteric surfactants include alkyl betaines as betaines. From the viewpoint of the blending effect, the amount of these surfactants is blended with the water-soluble metalworking fluid that is the stock solution so as to be about 5% by mass to 40% by mass based on the coolant.

Antioxidants include amine-based antioxidants such as alkylated diphenylamine, phenyl-α-naphthylamine, alkylated phenyl-α-naphthylamine, 2,6-di-t-butylphenol, 4,4′-methylenebis (2, 6-di-t-butylphenol), isooctyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, n-octadecyl-3- (3,5-di-t-butyl-4- Hydroxyphenyl) propionate, phenolic antioxidants such as 2,6-ditert-butyl-p-cresol, sulfur antioxidants such as dilauryl-3,3'-thiodipropionate, phosphorus systems such as phosphite Examples of the antioxidant include molybdenum-based antioxidants. The blending amount of these antioxidants is blended with the water-soluble metalworking fluid as a stock solution so that the blending amount is about 0.1% by mass to 1% by mass on the basis of the coolant.

These components may be used alone or in combination of two or more.

水溶 The water-soluble metalworking fluid (stock solution) of the present invention can be used as a water-soluble metalworking fluid (coolant) by appropriately diluting it with water so as to have an appropriate concentration according to the intended use. The water-soluble metalworking fluid (stock solution) of the present invention is usually diluted 2 to 300 times (volume ratio) with water, preferably 5 to 200 times, more preferably 10 to 100 times. Used as a liquid.

According to a preferred embodiment of the present invention, the water-soluble metalworking fluid of the present invention is excellent in processability (low friction coefficient), anti-corrosion, aluminum discoloration prevention, wettability, copper discoloration prevention, and wettability. Therefore, it can be suitably used for plastic working of metal materials, particularly aluminum.

In the water-soluble metalworking fluid of the present invention, since desired processability is easily obtained, the total content of components (A), (B), (C) and (D) is the water-soluble metal. The total amount of processing oil is preferably 60 to 100% by mass, more preferably 70 to 100% by mass, still more preferably 75 to 100% by mass, and particularly preferably 80 to 100% by mass.
The total content of components (A), (B), (C), (D), (E), (F), (G) and (H) is based on the total amount of the water-soluble metalworking fluid. 80 to 100% by mass, more preferably 85 to 100% by mass, still more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.

2. Manufacturing method of water-soluble metalworking fluid The water-soluble metalworking fluid of the present invention is
(A) a carboxylic acid having 8 to 18 carbon atoms;
(B) at least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols;
(C) An amine compound containing a trialkanolamine and a cyclohexyl dialkanolamine; and (D) It can be produced by mixing water.
Optionally,
(E) at least one selected from the group consisting of acidic phosphates and phosphites;
(F) glycols;
(G) a corrosion-resistant agent; and
(H) An antiseptic may be further mixed.
These components and contents are as described in the above-mentioned “1. Water-soluble metalworking fluid”. Moreover, you may further mix the other component mentioned above.
By mixing these components, the water-soluble metalworking fluid of the present invention can be produced.

3. Water-soluble metal working fluid The water-soluble metal working fluid of the present invention contains the aforementioned water-soluble metal working fluid and water having a volume ratio of 2 to 300 times that of the water-soluble metal working fluid. The amount of water is preferably 5 to 200 times, more preferably 10 to 100 times, by volume ratio with respect to the water-soluble metalworking oil.
In the water-soluble metal working fluid of the present invention, the content of (A) the carboxylic acid having 8 to 18 carbon atoms is 0.005 to 15% by mass based on the total amount of the water-soluble metal working fluid from the viewpoint of improving wettability. The range is preferably 0.05 to 10% by mass, more preferably 0.1 to 5% by mass.

The water-soluble metal working fluid obtained by diluting the water-soluble metal working fluid of the present invention with water is suitable for various metal working fields such as punching, cutting, grinding, polishing, drawing, drawing, rolling, etc. Can be used.

According to a preferred embodiment of the present invention, the water-soluble metalworking fluid of the present invention is excellent in wettability regardless of dilution concentration, so that not only a soft aluminum plate such as an aluminum fin material, but also a copper plate or carbon steel is used. It is also suitable for hard iron plates such as S45C thin plate. In particular, the water-soluble metalworking fluid of the present invention is suitable for processing aluminum such as an aluminum fin material.

4). Metal Processing Method The metal processing method of the present invention processes a workpiece made of metal using a water-soluble metal processing fluid (raw solution) or a water-soluble metal processing fluid obtained by diluting a water-soluble metal processing fluid with water. It is a metal processing method.
Examples of the type of metal processing include cutting, grinding, punching, polishing, drawing, drawing, rolling, and the like, and can be suitably used in various metal processing fields. The metal as the workpiece includes a pure metal composed of a single metal element and a metal-like material composed of a plurality of metal elements or a metal element and a non-metal element. The metal working method of the present invention is particularly suitable for plastic working of aluminum such as an aluminum fin material.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

A water-soluble metalworking fluid (stock solution) was prepared using the composition shown in Table 1, and the following evaluation was performed. The results are shown in Table 1.

The components in the table are as follows.
[(A) component]
C8-18 carboxylic acid 1: dodecanedioic acid C8-18 carboxylic acid 2: lauric acid C8-18 carboxylic acid 3: decanedioic acid (sebacic acid)
-C8-18 carboxylic acid 4: neodecanoic acid [component (B)]
(B-1) Alkylene oxide adduct of polyhydric alcohol 1: pentaerythritol polyoxyethylene ether, Japanese emulsifier “PNT-40”
(B-2) Polymerized fatty acid 1: Risinoleic acid hexamer (castor oil fatty acid polycondensate): acid value 31.6, hydroxyl value 9.4 mgKOH / g, weight average molecular weight 2000
The acid value of the polymerized fatty acid is a numerical value measured based on JIS K2501: 2003, and the hydroxyl value is a numerical value measured based on JIS K0070: 1992.
(B-3) Polyalkylene glycol 1: MeO (PO) a ((EO) b / (PO) c) (PO) dH, a / b / c / d = 292/800/614/580, random reverse Type, EO / PO = 35/65, weight average molecular weight 2286
[Component (C)]
• Trialkanolamine 1: Triethanolamine • Cyclohexyldialkanolamine 1: N-cyclohexyldiethanolamine [component (D)]
・ Water: Tap water [component (E)]
Acidic phosphate ester 1: oleyl acid phosphate, phosphorus content 6.3%, acid value 188 mg KOH / g
[(F) component]
Glycols 1: Ethoxylated 2,4,7,9-tetramethyl-5-decyne-4,7-diol Glycols 2: Ethoxylated 2,4,7,9-tetramethyl-5-decyne-4 , 7-diol EO adduct: HLB4 and 8 are mixed and used. "HLB value" means a value of HLB (Hydrophilic-Lipophilic Balance) calculated by the Griffin method.
[(G) component]
-Corrosion-resistant agent 1: 1,2,3-benzotriazole-Corrosion-resistant agent 2: Phosphoric acid ester (polyoxyethylene alkyl (12-15) ether phosphate ester, alkyl having 12 to 15 carbon atoms)
[(H) component]
Preservative 1: 1,2-benzisothiazolin-3-one Preservative 2: Sodium pyrithione [other ingredients]
Antioxidant 1: 2,6-di-tert-butyl-p-cresol Antifoam 1: Silicone antifoam (polyorganosiloxane)

The stock solution stability, rust resistance, rot resistance, aluminum discoloration, wettability, copper discoloration and workability were evaluated by the following methods.

(1) Stock solution stability Each component of the stock solution was placed in a beaker and mixed with stirring with a stirrer to obtain a uniform solution. After allowing the solution to stand overnight, the state of the solution in the beaker was visually observed, and the stock solution stability was evaluated according to the following criteria.
A: dissolved B: dispersed (has cloudy)
C: solidified

(2) Rust prevention (DIN)
A rust prevention test (casting chip test) was performed in accordance with DIN 51360-02A. Specifically, it is as follows.
Place 2 g of cast chips (cast iron chips obtained by dry cutting FC-250) on a filter paper (type 5 C) of φ70 mm on a petri dish so that the chips do not overlap with each other. Dilute with a) and cover. The sample is allowed to stand at room temperature for 2 hours, and the presence or absence of rust transferred to the filter paper is determined by five levels of rust (0, 1, 2, 3, 4). This casting chip test is performed for each concentration of the evaluation diluent, but the rust level is worsened when the concentration of the diluent is reduced, and the rust level is improved when the concentration of the diluent is increased. Therefore, the above test is performed for each concentration of the diluent, and the minimum concentration at which rust does not occur (rust level = 0) is defined as the rust prevention limit (mass%), which is an index for expressing the rust prevention property of the sample. . That is, the rust prevention limit is expressed by the ratio of the stock solution to the diluted solution when the stock solution is diluted with ion-exchanged water. In Table 1, “DIN × 10” represents the rust prevention limit when the stock solution is diluted 10 times with ion-exchanged water. Similarly, “DIN × 20”, [DIN × 30], [DIN × 50], [DIN × 80] and [DIN × 100] also represent the rust prevention limit when the stock solution is diluted at each dilution rate.

(3) Corrosion resistance To 100 ml of a sample obtained by diluting a water-soluble metalworking fluid to 2% by volume with water, 5 ml of the spoilage liquid A shown below and 0.5 ml of the spoilage liquid B are added, and 30 days at 30 ° C. and 150 rpm. After shaking culture, the number of viable bacteria was measured. On the 7th day, the number of viable bacteria was measured, 2.5 ml of rot solution A and 0.25 ml of rot solution B were added, and further cultured with shaking for 7 days to measure the number of viable bacteria. The conditions for the spoilage test and the method for measuring the number of viable bacteria were as follows.
<Rotation test conditions>
Culture conditions: 3 g of FC200 dry chips were added and shaken at 30 ° C. and 150 rpm.
Septic solution A: SDG medium “Digo” made by Nippon Pharmaceutical Co., Ltd. was added to a rot-degraded water-soluble processing oil and activated by aeration for 72 hours. Septic solution B: Septic-degraded water-soluble processing oil was made by Nippon Pharmaceutical potato dextrose agar. Activated by adding a medium “DAIGO” and aerated for 72 hours <Measurement method of viable cell count>
The number of bacteria in 1 ml or the degree of contamination by bacteria was measured by “San-ai Bio Checker” manufactured by Sanai Oil Co., Ltd. and displayed based on the following display standard for the number of viable bacteria. Further, the spoilage resistance was evaluated based on the following evaluation standards for spoilage resistance with respect to the number of viable bacteria after 14 days.
<Scoring resistance score>
A: General bacteria undetected to 10 ³ cells / mL, mold, yeast, anaerobic bacteria undetected B: General bacteria 10 ⁴ cells / mL or more, undetected molds, yeasts, Anaerobic Bacteria C: General bacteria There 10 ⁴ cells / mL or more, mold, yeast, anaerobic bacteria detected

(4) Aluminum discoloration The following two types of test pieces were prepared.
JIS A6061 (aluminum alloy): 75 x 25 x 1 mm
JIS ADC12 (aluminum alloy): 81 x 19 x 11 mm
Next, both surfaces of each test piece are uniformly polished with a sandpaper (C320), and then the powder of the polished test piece is wiped off. Next, put a polished test piece in a beaker, put acetone until the test piece is immersed, and wash it with an ultrasonic cleaner [manufactured by ASONE, model name “USD-2R”] for 10 minutes. Put them in a basket so that they don't overlap.
Next, put the sample solution (diluted stock solution 20 times with ion-exchanged water (5% diluted solution)) into a sample bottle with a 100 mL lid, and test cleaning solution so that the cleaning solution is immersed in the entire polished test piece. And cover with a 60 ° C. constant temperature bath for 2 hours. Thereafter, the test piece is taken out and washed with tap water, and then the moisture is wiped off and dried.
About each test piece obtained in this way, the discoloration of the appearance was visually observed, and aluminum discoloration (discoloration prevention) was evaluated according to the following criteria.
A: No color change on the immersion surface B: Less than 50% of the immersion surface is discolored C: 50% or more of the immersion surface is discolored Note that the evaluation results indicate the respective color change properties of A6061 and ADC12 as AA and DD. It was. Further, the appearance of the aqueous solution after the immersion test was also visually observed to confirm the presence or absence of white turbidity and precipitation.

(5) Wettability Using a “DM500” contact angle meter manufactured by Kyowa Interface Science Co., Ltd., the contact angle of ion-exchanged water on the aluminum fin (bare material) surface was measured. The wettability was evaluated according to the following criteria.
A: Contact angle 40 ° or less B: Contact angle 40-60 °
C: Contact angle 60 ° or more

(6) Copper discoloration (copper plate corrosion test)
A copper plate corrosion test was conducted according to JIS K 2513: 2000, and the rot resistance was evaluated according to the following criteria.
A: Discoloration is not recognized on the copper plate C: Discoloration is recognized on the copper plate

(7) Workability (friction coefficient)
The stock solution was diluted 50 times (volume ratio) with ion-exchanged water, then applied to the test piece, and the dynamic friction coefficient (μ) was determined by the reciprocating friction test shown below. As a reference example, a test using only ion-exchanged water was also performed.

<Reciprocating friction test>
Test machine: Reciprocating friction tester (Orientec Co., Ltd.)
Test piece: Pre-coated aluminum fin material for heat exchanger (Polyethylene glycol is applied to the surface as a hydrophilic film)
Test conditions:
Liquid temperature: 70 ° C
Load: 3kgf (29N)
Sliding speed: 20mm / s
Amplitude: 50 mm
Under this condition, the highest friction coefficient at the first sliding was read. In addition, a friction coefficient is an average value when it measures about the test piece of 3 sheets each in an Example and a comparative example.

The evaluation results are shown in Table 1.
As shown in Table 1, the water-soluble metalworking fluid of the present invention gives good results in terms of stock solution stability, rust prevention, anti-corrosion, aluminum discoloration, wettability, copper discoloration and workability. (Examples 1 to 7). In particular, as the component (B), when a combination of an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid and a polyalkylene glycol is used, processability (low friction coefficient), stock solution stability, rust resistance, rot resistance, Aluminum discoloration, wettability and copper discoloration were excellent (Example 3).
On the other hand, when the combination of the component (C) amine compound is lacking, the workability is lowered, and the desired effect cannot be obtained in terms of rust prevention, anti-corrosion, aluminum discoloration, wettability and copper discoloration. (Comparative Examples 1 to 4).

The water-soluble metal working fluid and the water-soluble metal working fluid of the present invention can be suitably used for plastic working of metal materials, particularly aluminum such as aluminum fin materials.

Claims

(A) a carboxylic acid having 8 to 18 carbon atoms;
(B) at least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols;
(C) an amine compound containing trialkanolamine and cyclohexyl dialkanolamine; and (D) a water-soluble metalworking fluid containing water.
The water-soluble metalworking fluid according to claim 1, wherein the total content of the component (B) is 0.1 to 20 by mass ratio with respect to the content of the component (A).
The water-soluble metalworking fluid according to claim 1 or 2, wherein the total content of the component (C) is 1 to 3 in terms of mass ratio with respect to the content of the component (A).
The water-soluble metalworking fluid according to any one of claims 1 to 3, wherein the content of the component (D) is 20 to 50% by mass based on the total amount of the water-soluble metalworking fluid.
The water-soluble metalworking fluid according to any one of claims 1 to 4, wherein the component (B) contains an alkylene oxide adduct of a polyhydric alcohol, a polymerized fatty acid, and a polyalkylene glycol.
(E) The water-soluble metalworking fluid according to any one of claims 1 to 5, further comprising at least one selected from the group consisting of acidic phosphates and phosphites.
The water-soluble metalworking fluid according to claim 6, wherein the total content of the component (E) is 0.1 to 10 by mass ratio with respect to the content of the component (A).
The water-soluble metalworking fluid according to any one of claims 1 to 7, further comprising (F) glycols.
The water-soluble metalworking fluid according to claim 8, wherein the total content of the component (F) is 0.01 to 10% by mass with respect to the content of the component (A).
(G) The water-soluble metalworking fluid according to any one of claims 1 to 9, further comprising a corrosion-resistant agent.
The water-soluble metalworking fluid according to any one of claims 1 to 10, further comprising (H) a preservative.
The water-soluble metalworking fluid according to any one of claims 1 to 11, which is used for processing aluminum.
(A) a carboxylic acid having 8 to 18 carbon atoms;
(B) at least one selected from the group consisting of alkylene oxide adducts of polyhydric alcohols, polymerized fatty acids and polyalkylene glycols;
(C) An amine compound containing a trialkanolamine and cyclohexyl dialkanolamine; and (D) a method for producing a water-soluble metalworking fluid comprising mixing water.
A water-soluble metal working fluid comprising the water-soluble metal working fluid according to any one of claims 1 to 12 and water having a volume ratio of 2 to 300 times that of the water-soluble metal working fluid.
A metal processing method comprising processing a workpiece made of metal using the water-soluble metal processing oil according to any one of claims 1 to 12.
The metal processing method including processing the workpiece which consists of metals using the water-soluble metal processing liquid of Claim 14.