JP3386927B2 - Metal working oil stock solution composition and metal working oil composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an undiluted metalworking oil composition and a metalworking oil composition obtained by diluting the same with water, and more specifically to aluminum, copper, alloys thereof, stainless steel and the like. , Rolling, drawing, ironing, and cutting of metallic materials where surface quality is important
The present invention relates to a metalworking oil stock solution composition that can be suitably used as a lubricating oil when performing plastic working such as drawing, punching, and pipe forming (roll forming), and a metalworking oil solution composition obtained by diluting the metal working oil stock solution composition with water.

[0002]

2. Description of the Related Art In the case of plastic working of steel or non-ferrous metal materials, a lubricating oil called metal working oil (plastic working oil) is used as a tool for the purpose of preventing wear of the tool and improving the condition of the working surface. It is customary to supply it with the material to be processed. Further, among the plastic working, in rolling, especially in cold rolling, in order to improve the working efficiency by increasing the rolling speed and reducing the number of passes, the advent of rolling oil with excellent lubricity is awaited. There is. Generally, the lubricity of rolling oil is
It has been conventionally studied from both aspects of the constituents of the oil agent and the viscosity of the oil agent. According to it, the lubricity of the rolling oil is almost proportional to its viscosity, and if the viscosity is increased, the lubricity is improved, but the surface gloss of the rolled metal sheet tends to be impaired due to the formation of oil pits. . Therefore, the rolling fluid used for high-speed rolling needs to have its viscosity set lower than usual, but when the viscosity is lowered, it is customary to lower the flash point of the rolling fluid, and a large amount of friction heat In high speed rolling accompanied by the occurrence of the above-mentioned phenomenon, it is not desirable to lower the flash point of the rolling fluid.

For these reasons, water-soluble rolling oils, especially emulsion type rolling oils, have been attracting attention as rolling oils that can be used for high-speed rolling. As the emulsion-type rolling oil agent, there are conventionally known ones in which polyethylene oxide alkyl ether, polyethylene oxide alkylphenyl ether, sulfonate, soaps and the like are used as emulsifiers, and various esters, fatty acids, fats and oils are used as oiliness agents. However, conventionally known emulsion-type rolling oils have the drawback of being inferior in lubricity as compared with water-insoluble rolling oils. Although this drawback can be compensated to some extent by increasing the viscosity of the oil agent, the increase in viscosity tends to impair the surface gloss of the metal plate. Further, the conventional emulsion-type rolling oil has an insufficient ability to disperse the metal abrasion powder generated during processing, so that aggregates of the metal abrasion powder are easily generated, and the aggregates form the rolling roll and the material to be processed. If it is sandwiched between them, there is a concern that scratches or uneven gloss may occur on the surface of the material to be processed. The above description relates to the emulsion-type rolling oil, but when performing drawing or ironing on a metal material, the same type of emulsion-type metalworking oil as the rolling oil is used, and there Similar problems have been pointed out.

[0004]

SUMMARY OF THE INVENTION The present inventors have overcome the drawbacks of conventional emulsion type metal working oils used as lubricating oils in various plastic workings including rolling, drawing and ironing. As a result of repeated studies to achieve this, by using a mineral oil, a synthetic oil or an oil and fat as the base oil of the metalworking oil, and mixing the specific four components in specific amounts, it is possible to avoid the above-mentioned drawbacks. It has been found that an undiluted composition of an emulsion type metalworking oil can be obtained. Therefore, one of the objects of the present invention is that an emulsion-type metalworking fluid having a relatively high flash point, good defoaming properties and dispersibility of abrasion powder, and excellent lubricity and cooling properties is mixed with water. A metalworking oil stock solution composition that can be easily prepared by Another object of the present invention is to provide an emulsion-type metalworking oil composition which has a relatively high flash point, good defoaming properties and dispersibility of wear particles, and excellent lubricity and cooling properties. .

[0005]

A metalworking fluid stock solution composition according to the present invention comprises, as a base oil, at least one selected from the group consisting of mineral oils, synthetic oils and fats and oils, and (A) 2 to 40% by mass of a saturated fatty acid monoester of polyethylene glycol represented by the formula (I) ,

[Chemical 3] (In the formula, R ¹ represents an alkyl group having 7 to 17 carbon atoms, m
Indicates a number from 2 to 25. ) (B) 2 to 40% by mass of unsaturated fatty acid monoester of polyethylene glycol represented by the formula (II) ,

[Chemical 4] (In the formula, R ² represents an alkenyl group having 7 to 23 carbon atoms,
n shows the number of 2-25. ) 0.4-8 mass% of (C) C8-24 fatty acid, and 0.4-8 mass% of (D) oleyl sarcoside, respectively, and the following formulas (1)-(4) A metalworking oil stock solution composition that simultaneously satisfies the requirements. a ₁ / b ₁ = 0.2 to 5 (1) a ₁ + b ₁ = 5 to 60 (2) c ₁ / d ₁ = 0.2 to 5 (3) c ₁ + d ₁ = 1 to 10 (4) However, a ₁ , b ₁ , c ₁ and d ₁ are the components (A) and (B) in the metalworking fluid stock solution composition, respectively.
The content (mass%) of the total amount of the components (C) and (D) is shown.

As the base oil of the stock solution composition of the present invention, any of mineral oils, synthetic oils and fats and oils which have been conventionally used as base oils for emulsion type rolling oil agents, water-solubilizing type rolling oil agents and the like can be used. Examples of usable mineral base oils include
Distilling crude oil under atmospheric pressure and further distilling it under reduced pressure gives a lubricating oil fraction, which is solvent desorbed, solvent extracted, hydrocracked, solvent dewaxed, catalytic dewaxed, hydrorefined, sulfuric acid washed, clay treated, etc. Paraffinic mineral oils and naphthenic mineral oils obtained by subjecting the refining treatment of 1) to an appropriate combination of two or more may be mentioned. Examples of synthetic oils include poly α
-Olefin (polybutene, 1-octene oligomer,
1-decene oligomer, etc.), alkylbenzene, alkylnaphthalene, ester (butyl stearate, octyl laurate, ditridecyl glutarate, di-2-
Ethylhexyl adipate, diisodecyl adipate,
Ditridecyl adipate, di-2-ethylhexyl sebacate, etc.), polyol ester (trimethylolpropane caprylate, trimethylolpropane pelargonate, trimethylolpropane oleate, trimethylolpropane stearate, pentaerythritol-2)
-Ethyl hexanoate, pentaerythritol pelargonate, pentaerythritol oleate, pentaerythritol stearate, etc.), polyoxyalkylene glycol, dialkyldiphenyl ether, polyphenyl ether, and the like.
Examples include palm oil and beef tallow. The base oil of the present invention can be composed of all the above-mentioned mineral oils only, synthetic oils only, or oils and fats, and the base oils can be composed by optionally combining these three kinds. . Further, the mineral oil, synthetic oil or fat or oil that constitutes a part or all of the base oil does not have to be a single kind.
Although no particular limitation on the viscosity of the base oil, in general, it is preferred that the kinematic viscosity is in the range of 1 to 300 mm ² / s at 40 ° C., in the range of 2 to 100 mm ² / s Is more preferable. The content of the base oil in the undiluted composition is not particularly limited, but is usually in the range of 30 to 94% by mass, preferably 40 to 40% by mass based on the total amount of the composition.
It is in the range of 90% by mass.

The component (A) of the present invention is a saturated fatty acid monoester of polyethylene glycol, and its general formula is represented by the formula (I) . In formula (I) , the substituent R
¹ represents an alkyl group having 7 to 17 carbon atoms. This alkyl group may be linear or branched, but is preferably linear. Specific examples of the substituent R ¹ include a linear or branched heptyl group, a linear or branched octyl group, a linear or branched nonyl group, a linear or branched decyl group, a linear or Branched undecyl group, linear or branched dodecyl group, linear or branched tridecyl group, linear or branched tetradecyl group, linear or branched pentadecyl group, linear or branched hexadecyl group And straight chain or branched chain heptadecyl groups and the like. Among these, a linear alkyl group having 7 to 17 carbon atoms is preferable, a linear alkyl group having 7 to 15 carbon atoms is more preferable, and a linear alkyl group having 7 to 13 carbon atoms is most preferable. M in the formula (I) represents the degree of polymerization of polyethylene glycol, and its value is 2 to 25, preferably 2 to 20. Any saturated fatty acid monoester of polyethylene glycol included in formula (I) can be used as the component (A) of the present invention, and the component (A) may be composed of a single type of monoester. if you can,
It may be composed of two or more monoesters. Specific examples of the saturated fatty acid monoester of polyethylene glycol preferably used as the component (A) of the present invention include octanoic acid (caprylic acid) monoester of polyethylene glycol, nonanoic acid (pelargonic acid) monoester of polyethylene glycol, Decanoic acid (capric acid) monoester of polyethylene glycol, undecanoic acid monoester of polyethylene glycol, dodecanoic acid (lauric acid) monoester of polyethylene glycol, tridecanoic acid monoester of polyethylene glycol, tetradecanoic acid (myristic acid) monoester of polyethylene glycol Examples thereof include esters, which are monoesters of polyethylene glycol and linear saturated fatty acids having 8 to 14 carbon atoms. The component (A) of the present invention is
It is important that the saturated fatty acid monoester of polyethylene glycol is used, and when a diester is used,
The dispersibility of wear powder decreases and the wear powder aggregates, causing scratches and uneven gloss on the surface of metal-finished products.
Lubricity is reduced, which is not preferable. In addition, when non-esterified polyethylene glycol is used, the emulsifying property becomes insufficient, and when polyethylene glycol monoalkyl ether is used, defoaming property and lubricity are deteriorated, which is not preferable. In the metalworking fluid stock solution composition of the present invention,
The upper limit of the content of the component (A) is 40 based on the total amount of the composition.
It is mass%, preferably 35 mass%, and the lower limit value is 2 mass%, preferably 3 mass%.

The component (B) of the present invention is an unsaturated fatty acid monoester of polyethylene glycol, the general formula of which is represented by the formula (II) . In the formula (II) , the substituent R
² represents an alkenyl group having 7 to 23 carbon atoms. The alkenyl group may be linear or branched, but is preferably linear. Specific examples of the substituent R ² include a linear or branched heptenyl group, a linear or branched octenyl group, a linear or branched nonenyl group,
Straight-chain or branched decenyl group, straight-chain or branched undecenyl group, straight-chain or branched dodecenyl group, straight-chain or branched tridecenyl group, straight-chain or branched tetradecenyl group, straight-chain or branched chain Pentadecenyl group, straight-chain or branched hexadecenyl group, straight-chain or branched heptadecenyl group, straight-chain or branched octadecenyl group, straight-chain or branched eicosenyl group, straight-chain or branched heneicosenyl group, direct Examples thereof include a chain or branched docosenyl group and a straight chain or branched tricosenyl group. Among these, a linear alkenyl group having 7 to 23 carbon atoms is preferable, and more preferably 7 to 23 carbon atoms.
19 straight chain alkenyl groups, most preferably 7 to 1 carbon atoms
7 is a straight-chain alkenyl group. N in the formula (II) represents the degree of polymerization of polyethylene glycol, and the value is 2 to 2
5, preferably 2 to 20. Any unsaturated fatty acid monoester of polyethylene glycol included in the formula (II) can be used as the component (B) of the present invention, and the component (B) is composed of a single type of monoester. If possible, it may be composed of two or more kinds of monoesters. Specific examples of unsaturated fatty acid monoesters of polyethylene glycol which are preferably used as the component (B) of the present invention include, for example, octenoic acid monoester of polyethylene glycol, noneic acid monoester of polyethylene glycol, and decenoic acid monoester of polyethylene glycol. Polyethylene glycol undecenoate monoester, polyethylene glycol dodecenoate monoester, polyethylene glycol tridecenoate monoester, polyethylene glycol tetradecenoate monoester, polyethylene glycol pentadecenoate monoester, polyethylene glycol hexadecenoate monoester, polyethylene Heptadecenoic acid monoester of glycol, octadecenoic acid (oleic acid) monoethene of polyethylene glycol Can be mentioned ether, etc., carbon atoms which are a polyethylene glycol 8
It is a monoester with an unsaturated linear fatty acid of -18. It is important that the component (B) of the present invention is an unsaturated fatty acid monoester of polyethylene glycol, and when a diester is used, the dispersibility of the abrasion powder is reduced and the abrasion powder agglomerates. It is not preferable because the surface of the metal-processed product has scratches and uneven gloss, and the lubricity decreases. In addition, when non-esterified polyethylene glycol is used, the emulsifying property becomes insufficient, and when polyethylene glycol monoalkyl ether is used, defoaming property and lubricity are deteriorated, which is not preferable. The upper limit of the content of the component (B) in the metalworking oil stock solution composition of the present invention is 40% by mass, preferably 35% by mass, based on the total amount of the composition, and the lower limit is 2% by mass, preferably 3% by mass. %.

When the content of the component (A) in the stock solution composition of the present invention is a ₁ mass% and the content of the component (B) is b ₁ mass%, in the present invention, a ₁ and b ₁ are as follows: It is necessary that the two expressions of are satisfied at the same time. a ₁ / b ₁ = 0.2 to 5 (1) a ₁ + b ₁ = 5 to 60 (2) When the ratio of the contents of the (A) component and the (B) component exceeds 5, a stock solution composition Not only decreases the lubricity of the metalworking oil composition obtained by diluting it with water, but also increases foaming and reduces workability. It is not preferable because it is necessary to increase. When the above ratio is less than 0.2, the dispersibility of the wear metal powder in the metalworking fluid composition obtained by diluting the stock solution composition with water is lowered, and as a result, aggregates are easily generated,
It is not preferable because scratches and uneven gloss are generated on the surface of the metal-processed product. The preferable upper limit value of the ratio of the contents of the component (A) and the component (B) is 4, and the preferable lower limit value is 0.3.
Is. Further, increasing the total content of the component (A) and the component (B) beyond 60 mass% of the stock solution composition
It is not preferable because there is no corresponding benefit, and when it is diluted with water to be a practical metalworking fluid, the lubricity decreases. On the other hand, when the total content is less than 5% by mass of the stock solution composition, a stable emulsion (emulsion type metalworking oil) cannot be obtained when the stock solution composition is diluted with water. The preferable upper limit value of the total content of the components (A) and (B) is 55% by mass, and the preferable lower limit value is 7% by mass.

The component (C) of the present invention is a fatty acid having 6 to 24 carbon atoms, and both saturated fatty acids and unsaturated fatty acids can be used. The component (C) may be composed of a single type of fatty acid, or may be composed of two or more types of fatty acid. As a specific example of the fatty acid that can be used as the component (C), linear or branched hexanoic acid,
Linear or branched heptanoic acid, linear or branched octanoic acid, linear or branched nonanoic acid, linear or branched decanoic acid, linear or branched undecanoic acid, linear or branched Dodecanoic acid, linear or branched tridecanoic acid, linear or branched tetradecanoic acid, linear or branched pentadecanoic acid, linear or branched hexadecanoic acid, linear or branched heptadecanoic acid, direct Chain or branched octadecanoic acid, straight chain or branched nonadecanoic acid, straight chain or branched icosanoic acid, straight chain or branched henicosanoic acid, straight chain or branched docosanoic acid, straight chain or branched chain Saturated fatty acids such as tricosanoic acid, straight chain or branched tetracosanoic acid, and further, straight chain or branched hexenoic acid, straight chain or branched heptenoic acid, straight chain or Branched octenoic acid, linear or branched nonenic acid, linear or branched decenoic acid, linear or branched undecenoic acid, linear or branched dodecenoic acid, linear or branched tridecenoic acid Linear or branched tetradecenoic acid, linear or branched pentadecenoic acid, linear or branched hexadecenoic acid, linear or branched heptadecenoic acid, linear or branched octadecenoic acid, linear or branched Chain nonadecenoic acid, linear or branched eicosenoic acid, linear or branched heneicosenoic acid, linear or branched docosenoic acid, linear or branched tricosenoic acid, linear or branched tetracosenoic acid, etc. Unsaturated fatty acids and the like. Of these, saturated or unsaturated fatty acids having 12 to 18 carbon atoms are particularly preferable, and linear saturated or unsaturated fatty acids are more preferable. The upper limit of the content of the component (C) in the metalworking oil stock solution composition of the present invention is 8% by mass, preferably 6% by mass, and the lower limit is 0.4% by mass, preferably It is 0.8% by mass.

[0011] (D) components of the present invention is Ru Oh oleyl Zarukoshido. The upper limit of the content of the component (D) in the metalworking oil stock solution composition of the present invention is 8% by mass, preferably 6% by mass, and the lower limit is 0.4% by mass, preferably It is 0.8% by mass.

When the content of the component (C) in the stock solution composition of the present invention is c ₁ mass% and the content of the component (D) is d ₁ mass%, in the present invention, c ₁ and d ₁ are as follows: It is necessary that the two expressions of are satisfied at the same time. c ₁ / d ₁ = 0.2 to 5 (3) c ₁ + d ₁ = 1 to 10 (4) When the ratio of the contents of the (C) component and the (D) component exceeds 5, a stock solution composition It is preferred that the dispersibility of wear metal powder in the metalworking oil agent composition obtained by diluting the product with water is reduced and aggregates are easily generated, resulting in scratches and uneven gloss on the surface of the metalworked product. Absent. In addition, the above ratio is 0.2
When it is below the range, it is not preferable because the metalworking oil composition obtained by diluting the stock solution composition with water is violently foamed, the workability is lowered, and the amount of the metalworking oil composition adhered to the material to be processed becomes excessive. The preferable upper limit value of the ratio of the contents of the component (C) and the component (D) is 4, and the preferable lower limit value is 0.3. Further, when the total content of the component (C) and the component (D) is increased to more than 10% by mass of the stock solution composition, a stable emulsion (emulsion type) when the stock solution composition is diluted with water is obtained. Not only cannot obtain a metalworking oil)
It is not preferable because it may corrode the material to be processed and the tool. On the other hand, if the above total content is less than 1% by mass, the lubricity of the metalworking oil composition obtained by diluting the stock solution composition with water decreases. The preferable upper limit value of the total content of the component (C) and the component (D) is 8% by mass, and the preferable lower limit value is 1.5% by mass.

The metalworking fluid stock solution composition according to the present invention comprises:
An oil agent composition that is basically composed of the above-mentioned base oil and five components (A) to (D), and is diluted with water to obtain an oil agent composition suitable for various metal workings. However, various known additives can be added to the stock solution composition having the basic constitution, if necessary. Examples of these additives include rust inhibitors such as sulfonates, phosphoric acids and phosphates, and boron compounds; phenol-based, amine-based, sulfur-based, phosphorus-based, chlorine-based antioxidants; nitrogen such as benzotriazole. Corrosion inhibitors such as compounds, compounds containing sulfur and nitrogen; preservatives such as phenolic compounds, formaldehyde donor compounds, salicylanilide compounds; antifoaming agents such as silicone oils;
Oily agents such as fatty acids, esters and alcohols; anionic surfactants such as sulfuric acid and sulfonates; and nonionic surfactants such as polyoxyethylene compounds; sodium hydroxide, potassium hydroxide, aliphatic amines, alicyclics Examples thereof include pH adjusting agents such as group amines and alkanolamines, which can be added alone or in combination of two or more kinds to the stock solution composition of the present invention. In this case, the total content of additives in the undiluted composition is usually 5% by mass or less, preferably 1% by mass or less, based on the total amount of undiluted composition. Further, in the metalworking oil stock solution composition of the present invention, water can be added in an amount of 10% by mass or less based on the total amount of the composition in order to enhance its storage stability, and in that case, water is hard water. Regardless of whether it is soft water or soft water, tap water, industrial water, ion-exchanged water, distilled water, or the like can be optionally used.

The metalworking oil composition according to the present invention can be obtained by diluting the above stock solution composition with water, and the dilution ratio can be arbitrarily selected. However, considering the cooling properties, flammability, lubricity, etc. of the oil agent composition,
Stock solution composition 1 to 100 parts by weight, preferably 1.5 to 50
It is preferred to dilute parts by weight with 100 parts by weight of water.
As water, either hard water or soft water can be used, and specifically, tap water, industrial water, ion-exchanged water, distilled water or the like can be arbitrarily used. The metalworking oil composition of the present invention sufficiently exhibits the action as a metalworking oil agent if the above-mentioned base oil and the components (A) to (D) are emulsified in water in a predetermined amount, and therefore, the oil agent composition. When preparing a product, it is not always necessary to prepare a stock solution composition in advance. Typical composition of the metalworking oil composition according to the present invention (based on the total amount of the composition)
Water: 50 to 99.5 mass%, preferably 65 to 99.0 mass% Base oil: 0.5 to 45 mass%, preferably 1 to 40 mass% Component (A): 0.05 to 20% by mass, preferably 0.1-15% by mass (B) component: 0.05-20% by mass, preferably 0.1-15% by mass (C) component: 0.01-4% by mass, preferably 0.02 to 3% by mass (D) component: 0.01 to 4% by mass, preferably 0.02 to 3% by mass and satisfying the following formulas (5) to (8). . a ₂ / b ₂ = 0.2~5, preferably _{0.3~4 (5) a 2 + b} 2 = 0.2~30, preferably 0.3 to 25 _{(6) c 2 / d 2} = 0.2~5, preferably _{0.3~4 (7) c 2 + d} 2 = 0.05~5, preferably 0.1 to 4 (8) where, a ₂ , B ₂ , c ₂ and d ₂ represent the contents (% by mass) of the component (A), the component (B), the component (C) and the component (D) in the metalworking oil composition. The metalworking oil composition of the present invention may contain the additives exemplified above as the additives that can be added to the undiluted composition, and in this case, the total amount of the additives is usually 2.5% by mass or less. , Preferably contained in the oil agent composition in an amount of 0.5% by mass or less.

[0015]

Industrial Applicability The metalworking oil composition of the present invention is used for plastic working of steel and non-ferrous metal materials (hot rolling, cold rolling, drawing, ironing, cutting, drawing, punching, Pipe forming (roll forming)
It exhibits excellent lubricity when used for such purposes, so it has sufficient suitability for high-speed machining. In addition, since the oil agent composition of the present invention is excellent in dispersibility of metal wear powder, there is no fear of causing scratches and uneven gloss on the surface of processed products. In addition, the oil agent composition of the present invention does not cause excessive foaming during use.

[0016]

EXAMPLES The contents of the present invention will be described more specifically below with reference to Examples and Comparative Examples, but the present invention is not limited thereto. Stock solution compositions having the compositions shown in Table 1 and Table 2 were prepared, and the performance of each stock solution composition was evaluated with respect to dispersibility of abrasion powder, gloss of a plate after rolling, defoaming property and drawability. Evaluation of wear powder dispersibility by pin-on-disc test (see Japanese Patent Laid-Open No. 4-218768) Each stock solution composition was diluted 20 times (weight ratio) with hard water having a German hardness of 30 degrees, and used as a sample solution. The powder dispersibility was evaluated by the following method. An aluminum (A3004 H-19) plate stuck and fixed on the surface of a steel disc was pressed with a pin made of high speed steel (SKH 9) having a diameter of 8 mm, and 600 ml of the sample solution was 1200 ml /
Rotate the disk at a rotational speed of 1 while circulating the supply at min.
A pin-on-disk test was conducted for 30 minutes while maintaining the load of the pin at 7.5 kgf at 000 rpm (peripheral speed 314 m / min). After the test, the surface of the aluminum plate was visually observed and evaluated according to the following criteria. ○: Wear powder is completely dispersed on the aluminum plate,
No agglomeration of wear particles has occurred. △: A small amount of wear powder agglomerates adheres to the aluminum plate. ×: A large amount of wear powder agglomerates adheres to the aluminum plate. Gloss after rolling Evaluation Each stock solution composition was diluted to 20 times (weight ratio) with ion-exchanged water and used as a rolling fluid to roll the stainless steel 3 times under the following rolling conditions. The surface was visually observed. ◯: The surface is glossy, Δ: Scratches are generated by biting abrasion powder on the surface ×: Scratches are observed (rolling conditions) Rolled material: Stainless steel (SUS430 2B material) Thickness 0.5 mm × Width 50 mm Work roll diameter: 51 mm φ Work roll roughness: Ra 0.03 μm Rolling speed: 100 m / min Reduction ratio: 25% Lubricant supply method: Before the rolling roll, using a nozzle, the material to be rolled and the rolling roll In the meantime, rolling oil was sprayed. Evaluation of foamability Each stock solution composition was diluted 20 times (weight ratio) with ion-exchanged water, 500 ml of sample solution was put into a 1000 ml graduated cylinder, and the sample solution was circulated with a pump at a flow rate of 1300 ml / min. The amount of foaming after minutes was measured. In addition, when bubbles overflowed from the graduated cylinder, it was set to −. Evaluation of drawability Each stock solution composition was diluted 3.5 times (weight ratio) with ion-exchanged water, and the sample solution was used as a drawing oil for aluminum materials to produce disc-shaped aluminum materials (JIS A3004 H
19, 100mmφ, 0.37mm thickness) wrinkle holding force 1
The maximum squeezing force of the punch required for forming a bottomed container under the condition of 000 kgf was measured.

The evaluation results in each of the above tests are shown in Tables 1 and 2. In addition, each component used in the preparation of the stock solution composition is as follows. Base oil Base oil 1: Mineral oil (kinematic viscosity at 40 ° C. 32 cSt) Base oil 2: Polybutene (Nisseki Polybutene LV50; average degree of polymerization = 430) Base oil 3: Trimethylolpropane trioleate (A) component A1: Polyethylene glycol ( Average degree of polymerization = 4.5)
Lauric acid monoester A2: polyethylene glycol (average degree of polymerization = 9.0)
Lauric acid monoester (B) component B1: polyethylene glycol (average degree of polymerization = 2.2)
Oleic acid monoester B2: polyethylene glycol (average degree of polymerization = 4.5)
Oleic acid monoester B3: polyethylene glycol (average degree of polymerization = 9.0)
Oleic acid monoester B4: polyethylene glycol (average degree of polymerization = 13.
5) Oleic acid monoester (C) component C1: oleic acid C2: lauric acid (D) component D1: oleyl sarcoside D2: lauryl sarcoside (E) component E1: polyethylene glycol (average degree of polymerization = 4. 5) E2: Polyethylene glycol (average degree of polymerization = 4.5)
Monolauryl ether E3: polyethylene glycol (average degree of polymerization = 4.5)
Oleic acid diester

[Table 1]

[Table 2]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI C10M 145: 38) C10N 30:00 Z C10N 30:00 30:04 30:04 30:06 30:06 30:18 30:18 40:20 Z 40:20 (58) Fields investigated (Int.Cl. ⁷ , DB name) C10M 173/00-173/02 C10M 129/28-129/46 C10M 129/76 C10M 133/02-133 / 20 C10M 141/06 C10M 145/38 C10M 161/00 C10N 30:00 C10N 30:04-30:06 C10N 30:18 C10N 40:20-40:24

Claims (2)

(57) [Claims] 1. A saturated fatty acid monoester of polyethylene glycol represented by the formula (I) (A) on the basis of the total amount of the composition, wherein at least one selected from the group consisting of mineral oil, synthetic oil and fat is used as a base oil. 2-40% by mass, (In the formula, R ¹ represents an alkyl group having 7 to 17 carbon atoms, m
Indicates a number from 2 to 25. (B) 2 to 40% by mass of unsaturated fatty acid monoester of polyethylene glycol represented by the formula (II) , (In the formula, R ² represents an alkenyl group having 7 to 23 carbon atoms,
n shows the number of 2-25. ) 0.4-8 mass% of (C) C8-24 fatty acid, and 0.4-8 mass% of (D) oleyl sarcoside, respectively, and the following formulas (1)-(4) A metalworking oil stock solution composition that simultaneously satisfies the requirements. a ₁ / b ₁ = 0.2 to 5 (1) a ₁ + b ₁ = 5 to 60 (2) c ₁ / d ₁ = 0.2 to 5 (3) c ₁ + d ₁ = 1 to 10 (4) However, a ₁ , b ₁ , c ₁ and d ₁ are the components (A) and (B) in the metalworking fluid stock solution composition, respectively.
The content (mass%) of the total amount of the components (C) and (D) is shown. 2. An emulsion-type metalworking oil composition comprising 100 parts by weight of water and 1 to 100 parts by weight of the stock solution of the metalworking oil solution according to claim 1.