JPH0631392B2 - Aluminum cold rolling oil composition - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a cold rolling oil composition used for cold rolling aluminum.

BACKGROUND OF THE INVENTION In recent years, the speed of cold rolling mills has increased, and the deformation heat and frictional heat in plastic working have increased. Therefore, among the properties required for cold rolling oil, the cooling property and the safety against heat are particularly high. It is becoming more important.

Conventionally, low-viscosity mineral oil has been used for cold rolling oil because it has a higher cooling property as a low-viscosity product, but since low-viscosity mineral oil has a low flash point, there is a risk that a fire will occur during high-speed rolling. is there. Therefore, mineral oil-based soluble oils, in which low-viscosity mineral oils are dispersed or emulsified in water, have begun to be used by utilizing the property that water is excellent in fire safety and cooling properties.

However, mineral oil-based soluble oil is excellent in fire safety and cooling properties, but is poor in rolling property, that is, oil property and oil film strength, and may cause water stain particularly when used in cold rolling of aluminum, It is said to be a major drawback.

The water stain referred to here is a white irremovable stain that occurs on the surface of an aluminum plate after rolling when mineral oil-based soluble oil is used as a cold rolling oil for aluminum. This water stain is caused by dew condensation during rolling coil storage, insufficient draining of the aluminum plate after rolling, and spilling of rolling oil onto the aluminum plate.However, when water stain occurs, the commercial value of the aluminum plate Is greatly damaged.

Therefore, the present inventors have completed the present invention as a result of repeated research for solving the problems of the above-described conventionally known aluminum cold rolling oil.

[Object of the Invention] The present invention has an excellent cooling property and a fire prevention property during high-speed rolling in cold rolling of aluminum, and is excellent in rollability and emulsion stability. An object of the present invention is to provide an aluminum cold rolling oil composition having various characteristics that the surface condition of the subsequent aluminum plate is extremely good.

[Details of the Invention] The present invention includes two inventions, the specific invention of which is (A) 10 to 90 parts by weight of an aliphatic monohydric alcohol having 8 to 22 carbon atoms, and (B) a viscosity at 40 ° C of 1.5 to 35 cSt. Mineral oil 0-80
Parts by weight, (C) 0.1 to 10 parts by weight of aliphatic monocarboxylic acid having 8 to 20 carbon atoms, (D) general formula [Wherein, R ₁ and R ₃ are hydrogen, a hydrocarbon group or an acyl group, R ₁ and R ₃ may be the same or different, R ₂ is an alkylene group, and b is 1 to 6 and a Xb is 1 to 20] 0.1 to 20 parts by weight of a surfactant represented by the following formula: 100 parts by weight of the components (A) to (D), and (E) an alkali metal salt of benzoic acid and / Alternatively, the present invention provides an aluminum cold rolling oil composition comprising an amine salt and water in an amount of 0.01 to 10 parts by weight per 100 parts by weight of the total of components (A) to (D) as an essential component. The second invention is (A) 10 to 90% by weight of an aliphatic monohydric alcohol having 8 to 22 carbon atoms, and (B) a mineral oil having a viscosity of 1.5 to 35 cSt at 40 ° C. of 0 to 80.
% By weight, (C) 0.1 to 10% by weight of aliphatic monocarboxylic acid having 8 to 20 carbon atoms, (D) general formula [In the formula, R ₁ and R ₃ are hydrogen, a hydrocarbon group or an acyl group, R ₁ and R ₃ may be the same or different, R ₂ is an alkylene group, and n is 1 to 6, m Xn is 1 to 20] 0.1 to 20% by weight of a surfactant represented by the formula: (A) to (D) 100 parts by weight in total, (E) an alkali metal salt of benzoic acid and / or 0.01 to 10 parts by weight of the amine salt with respect to 100 parts by weight of the total amount of the components (A) to (D), and 100 parts by weight of the total weight of the (F) benzotriazole and the components (A) to (D). The present invention provides an aluminum cold rolling oil composition which comprises 0.01 to 6 parts by weight of water as an essential component in water.

Hereinafter, the aluminum cold rolling oil composition of the present invention will be described in more detail.

The component (A) in the present invention is an aliphatic monohydric alcohol having 8 to 22 carbon atoms, preferably 10 to 18 carbon atoms, and mixtures thereof. As the aliphatic alcohol, any of saturated alcohols, unsaturated alcohols and mixtures thereof can be used, but saturated alcohols are preferred from the viewpoint of thermal stability. As the aliphatic alcohol, any of straight chain alcohols, branched alcohols and mixtures thereof can be used. Specific examples of the alcohol (A) that can be used in the present invention include octyl alcohol, nonyl alcohol, decyl alcohol, undecyl alcohol, dodecyl alcohol (lauryl alcohol), tridecyl alcohol, and tetradecyl alcohol (myristyl alcohol). , Pentadecyl alcohol, hexadecyl alcohol (cetyl alcohol), heptadecyl alcohol, octadecyl alcohol (stearyl alcohol), eicosyl alcohol,
Examples thereof include docosyl alcohol, octadecenyl alcohol (oleyl alcohol), octadecatrienyl alcohol (linoleyl alcohol), and mixtures thereof. As the alcohol as the component (A) in the present invention, a natural product or a synthetic product produced by any method can be used, and for example, sodium reduction and / or hydrogenation of natural oils such as coconut oil and beef tallow. The mixed alcohols obtained by the above, the oxo alcohols synthesized by the oxo method, the synthetic alcohols derived from ethylene and metal alkyl by the Ziegler method, and the like can be used.

As the aliphatic monohydric alcohol used as the component (A) in the present invention, it is necessary to use one having 8 to 22 carbon atoms, and one having more than 22 carbon atoms is solid at room temperature and has poor workability. Poor, and more likely to cause oil stain due to the annealing treatment. If the carbon number is less than 8, the rolling property is poor, and the workability is poor due to the pungent odor.

The blending amount of the component (A) is the total weight of the components (A) to (D).
The amount is 10 to 90 parts by weight, preferably 20 to 60 parts by weight, based on 100 parts by weight. When the component (A) is not used or the amount of the component (A) does not reach the above range, the rolling property of the rolling oil is reduced, and the water emulsification property and water solubilization property of the rolling oil stock solution are deteriorated. Therefore, it is not preferable.

The component (B) referred to in the present invention is 1.5 to 35c at 40 ° C.
A mineral oil having a viscosity range of St, preferably 2.0 to 15 cSt. As the mineral oil as the component (B), any type can be used as long as it is within the above viscosity range, but a lubricating oil fraction obtained by distilling a crude oil is usually subjected to any refining treatment, for example, solvent refining. It is preferable to use mineral oil obtained by subjecting to sulfuric acid treatment, hydrogenation refining, clay treatment and the like.

The blending amount of the component (B) is the total weight of the components (A) to (D).
The amount is 0 to 80 parts by weight, preferably 30 to 80 parts by weight, based on 100 parts by weight. The component (B) does not necessarily have to be used, but by blending the component (B) within the above range, the viscosity of the rolling oil can be adjusted, and the adhesion between the rolling roll and the aluminum plate in the rolling step can be adjusted. Can be increased. However, when the blending amount of the component (B) exceeds the above range, the rolling property is deteriorated, oil stain is likely to occur due to the annealing treatment, and the water emulsifying property and water solubilizing property of the rolling oil are also deteriorated, which is preferable. Absent.

The component (C) in the present invention is an aliphatic monocarboxylic acid having 8 to 20 carbon atoms, preferably 10 to 18 carbon atoms and a mixture thereof. The aliphatic monocarboxylic acid may be a saturated carboxylic acid, an unsaturated carboxylic acid or a mixture thereof, and may be a linear carboxylic acid, a branched carboxylic acid or a mixture thereof. Specific examples of the component (C) aliphatic monocarboxylic acid that can be used in the present invention include octanoic acid (caprylic acid), nonanoic acid (pelargonic acid), decanoic acid (capric acid) undecanoic acid, and dodecanoic acid. (Lauric acid), tridecanoic acid, tetradecanoic acid (myristic acid), pentadecanoic acid, hexadecanoic acid, (palmitic acid), heptadecanoic acid (margaric acid), octadecanoic acid (stearic acid), nonadecanoic acid, eicosanoic acid (arachidic acid), Octenoic acid, nonenic acid, undecenoic acid, dodecenoic acid, tetradecenoic acid, hexadecenoic acid, octadecenoic acid (oleic acid), eicosenoic acid, octadecadienoic acid (linoleic acid), octadecatrienoic acid (linolenic acid)
And mixtures thereof.

The blending amount of the component (C) is the total weight of the components (A) to (D).
It is 0.1 to 10 parts by weight, preferably 1 to 7 parts by weight, based on 100 parts by weight. If the component (C) is not used, or if the blending amount of the component (C) does not reach the above range, the rolling property of the rolling oil decreases, which is not preferable. On the other hand, if the blending amount of the component (C) exceeds the above range, stains on the aluminum plate surface after rolling will occur due to stains of the rolling oil, which is not preferable.

The component (D) referred to in the present invention is represented by the general formula Is a surfactant represented by.

In the formula (1), R ₂ is an alkylene group, and the alkylene group preferably has 2 to 8 carbon atoms, and alkylene groups having different carbon numbers may be present in one molecule.
Particularly preferred alkylene groups are ethylene groups and propylene groups, and preferred polyoxyalkylene groups are polyoxyethylene groups, polyoxypropylene groups and polyoxyethylene-polyoxypropylene groups.

In the formula (1), R ₁ and R ₃ are hydrogen, a hydrocarbon group or an acyl group, and R ₁ and R ₃ may be the same or different.

The term "hydrocarbon group" as used herein refers to (i) a saturated or unsaturated, linear or branched chain hydrocarbon group having 4 to 22 carbon atoms, preferably an aliphatic monohydric alcohol having 10 to 18 carbon atoms. Derived alkyl group having 10 to 18 carbon atoms, for example, decyl group, undecyl group, dodecyl group, tetradecyl group, hexadecyl group and octadecyl group, (ii) divalent to hexavalent alcohol, preferably glycol, glycerin, trimethylolpropane, Hydrocarbon residues derived from pentaerythritol and sorbitol, and (iii) substituted or unsubstituted aromatic hydrocarbon groups having 6 to 22 carbon atoms, preferably aromatic hydrocarbon groups having 6 to 18 carbon atoms, such as phenyl. Group, octylphenyl group, nonylphenyl group, decylphenyl group and dodecylphenyl group. The term "acyl group" used herein refers to a carboxylic acid having 2 to 22 carbon atoms,
Particularly, those derived from a saturated monocarboxylic acid having 2 to 18 carbon atoms or an unsaturated monocarboxylic acid are preferable, and examples of the carboxylic acid include acetic acid, propionic acid, butyric acid, isobutyric acid valeric acid, pivalic acid, lauric acid, myristin. Acid, palmitic acid, stearic acid, oleic acid and the like can be mentioned.

R ₁ and R ₃ may be the same or different, and hydrogen,
Although arbitrarily selected from a hydrocarbon group and an acyl group,
One is preferably hydrogen and the other is a hydrocarbon group or an acyl group.

In the formula (1), b is 1 to 6, preferably 1 to 3.
And a × b is an integer of 1 to 20, preferably 2 to 14.

As the component (D) in the present invention, a surfactant represented by the formula (1) or a mixture thereof can be used. Among the surfactants represented by the formula (1), a particularly preferred one is Laoxyl ether, myristyl ether, palmityl ether, stearyl ether, octylphenyl ether, nonylphenyl ether, lauryl ester, myristyl ester, palmityl ester, stearyl ester of oxyethylene, polyoxypropylene or polyoxyethylene-polyoxypropylene or these And a in the formula (1)
Is an integer of 2 to 14 and b is 1.

The blending amount of the component (D) is the total weight of the components (A) to (D).
The amount is 0.1 to 20 parts by weight, preferably 1 to 15 parts by weight, based on 100 parts by weight. When component (D) is not used, or (D)
If the blending amount of the components is less than the above range, the emulsion stability of the rolling oil or the water solubilization stability deteriorates, and it becomes difficult to control the rolling oil, which is not preferable. On the other hand, if the content of the component (D) exceeds the above range, the plate-out property during rolling deteriorates and the rollability deteriorates, which is not preferable.

As the surfactant, in addition to the component (D) of the present invention,
For example, higher fatty acid alkali metal salt (soap), alkyl sulfate, alkyl sulfonate, anionic surfactant such as alkyl aryl sulfonate, higher amine halogenate, alkyl pyrinidium halide, quaternary ammonium Salts, quaternary phosphonium salts, tertiary sulfonium salts, polysoap, cationic amines such as polyamines, nonionic surfactants such as polyoxyalkylene phosphates, and amphoteric alkylamino acids, polyacrylamides, etc. Many surfactants and the like are known, but when a surfactant other than the component (D) of the present invention is used instead of the component (D), the emulsion stability or water solubilization of the rolling oil is known. It is not preferable because the stability is poor and the control of rolling oil becomes difficult. However, in the present invention, it does not matter even if a small amount of a surfactant other than the component (D) as described above is used together with the component (D).

The component (E) in the present invention is an alkali metal salt and / or amine salt of benzoic acid. Benzoic acid here means the general formula (In the formula, R ₄ represents an alkyl group having 1 to 6 carbon atoms, preferably 1 to ₄ carbon atoms, and c represents an integer of 0 to 3), and benzoic acid and its alkyl derivative. There is. The compounds represented by the above general formula, which are preferable in the present invention, specifically include, for example, benzoic acid, toluic acid, dimethylbenzoic acid, ethylbenzoic acid,
Examples thereof include propylbenzoic acid, butylbenzoic acid, trimethylbenzoic acid, methylethylbenzoic acid, butylbenzoic acid, diethylbenzoic acid and mixtures thereof. on the other hand,
Specific examples of the alkali metal include sodium,
Examples thereof include potassium. Further, as the amine, a general formula Amines represented by And the like. In the above formula, R
₅ , R ₆ and R ₇ may be the same or different and each is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or 5 to 5 carbon atoms.
8 is a cycloalkyl group or an alkylcycloalkyl group, or a hydroxyalkyl group having 1 to 6 carbon atoms and having 1 to 6 carbon atoms, specifically, for example, a hydrogen atom,
Methyl, ethyl, propyl, butyl, pentyl, hexyl, cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, dimethylcyclopentyl, ethylcyclopentyl, methylcycloheptyl, general, dimethyl Cyclohexyl group, ethylcyclohexyl group, hydroxymethyl group, hydroxyethyl group, hydroxypropyl group, hydroxybutyl group, hydroxypentyl group,
A hydroxyhexyl group etc. are mentioned. Also, in the previous equation,
R ₈ , R ₉ , R ₁₀ , R ₁₁ and R ₁₂ may be the same or different and each is a hydrogen atom or a carbon number of 1.
To 6, preferably 1 to 4 alkyl groups, specifically, for example, a hydrogen atom, a methyl group, an ethyl group. Examples thereof include a propyl group, a butyl group, a pentyl group and a hexyl group.

Particularly preferable examples of the component (E) of the present invention include benzoic acid, toluic acid, dimethylbenzoic acid, ethylbenzoic acid, propylbenzoic acid or butylbenzoic acid sodium salt, potassium salt, and ammonium. Salt, methylamine salt, ethylamine salt, propylamine salt, butylamine salt, pentylamine salt, dimethylamine salt, diethylamine salt, dipropylamine salt, dibutylamine salt, cyclohexylamine salt, dicyclohexylamine salt, propylcyclohexylamine salt, ethanol Amine salt, diethanolamine salt, triethanolamine salt, propanolamine salt, dipropanolamine salt, tripropanolamine salt, morpholine salt,
Examples thereof include methylmorpholine salt, dimethylmorpholine salt, ethylmorpholine salt, diethylmorpholine salt, and mixtures thereof.

The blending amount of the component (E) is the total weight of the components (A) to (D).
0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight per 100 parts by weight
Parts by weight. When the component (E) is not used, or when the blending amount of the component (E) does not reach the above range, water stain is often generated on the rolled aluminum plate, which is not preferable. On the other hand, if the blending amount of the component (E) exceeds the above range, poor solubility of the component (E) in the rolling oil occurs or the emulsion stability of the rolling oil deteriorates, which is not preferable.

According to the present invention, the above components (A) to (E) are blended with water as essential components and emulsified or solubilized to obtain an aluminum cold rolling oil composition excellent in various performances. However, according to the second aspect of the present invention, if a predetermined amount of (F) benzotriazole is further blended, an aluminum cold rolling oil composition having a more excellent water stain preventing property can be obtained.

The (F) benzotriazole referred to in the second invention of the present invention has the general formula (In the formula, R ₁₃ represents an alkyl group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, and d represents an integer of 0 to 2) and a benzotriazole and an alkyl derivative thereof. Particularly preferred compounds as the component (F) of the present invention include, for example, benzotriazole,
Examples thereof include methylbenzotriazole, dimethylbenzotriazole, ethylbenzotriazole and mixtures thereof.

The content of the component (F) is the total weight of the components (A) to (D).
0.01 to 6 parts by weight, preferably 0.05 to 100 parts by weight
3 parts by weight. When the blending amount of the component (F) does not reach the above range, the effect of preventing the occurrence of water stain due to the blending of the component (F) does not significantly increase. On the other hand, if the blending amount of the component (F) exceeds the above range, precipitation of the component (F) may cause clogging of the oil supply filter, which is not preferable.

The aluminum cold rolling oil composition of the present invention comprises the components (A) to (E) in the specific invention and the predetermined amounts of the components (A) to (F) in the second invention as an essential component in water. And then emulsifying or solubilizing it. The amount of water used at this time is arbitrary, but is usually 3 to 1000 times by weight, preferably 5 to 100 parts by weight, of the total weight of the components (A) to (D).

In the present invention, the method of blending the components (A) to (E) or (A) to (F) in water is arbitrary, and each component may be added separately to water, or in advance ( A) ~
The component (E) or any of the components (A) to (F) may be mixed to form a rolling oil stock solution, and these components may be mixed with water in the form of the rolling oil stock solution. In particular, in the present invention, from the viewpoint of ease of production of the rolling oil composition,
It is preferable that the components (A) to (E) or the components (A) to (F) be mixed in advance as a rolling oil raw material, and this rolling oil stock solution be mixed with water. However, when the benzoate of the component (E) is insoluble or sparingly soluble in the mixture of other components, only the component (E) is previously dissolved in water to form an aqueous solution, and then the mixture of other components is prepared in the form of an aqueous solution. It is preferred to mix it with water together with the rolling oil stock solution.

Further, in the aluminum cold rolling oil composition of the present invention, if necessary, a known lubricating oil additive such as an oiliness agent, an extreme pressure agent, an antioxidant, a rust inhibitor and a bactericide or an antiseptic agent may be added. You can also Examples of the oiliness agent that can be used in the present invention include higher fatty acids having 8 to 18 carbon atoms such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid,
Esters of fatty acids such as stearic acid and oleic acid with aliphatic alcohols or glycols having 1 to 8 carbon atoms, such as methyl laurate, butyl laurate, butyl stearate, pentyl oleate, octyl myristate, sorbitan monolaurate. , Sorbitan monopalmitate, oleic acid monoglyceride, oleic acid diglyceride, etc., and further beef tallow, lard, sheep fat, fish oil, animal oil such as whale oil, olive oil, coconut oil, castor oil, rapeseed oil,
Examples thereof include vegetable oils such as palm oil and soybean oil, and mixtures thereof. On the other hand, as the extreme pressure agent, for example, n-butyldi-n-octylphosphinate, di-n-butylhexylphosphonate, di-n-butylphenylphosphonate, tributylphosphate, tricresylphosphate, dibutylphosphoramidate, amine Examples thereof include organic phosphorus compounds such as dibutyl phosphate, organic halogen compounds such as chlorinated paraffin and chlorinated diphenyl, and organic sulfur compounds such as sulfide, disulfide and diester disulfide. Further, examples of the antioxidant include N.I. Aromatic amines such as N'-di-sec-butyl-p-phenylenediamine and phenyl-α-naphthylamine, and hindered phenols such as 2,6-di-tert-butyl-p-cresol are rust preventives. Examples thereof include alkyl or alkenyl succinic acid and its partial ester, fatty acid, naphthenic acid, abiethyl acid, lanolin fatty acid, metal soap of alkenyl succinic acid, carboxylic acid salt such as amine salt, sulfonic acid such as Na sulfonate, Ca sulfonate and Ba sulfonate. Salt, dialkyldithiophosphoric acid,
Examples thereof include phosphoric acid and phosphates such as dialkylphosphinic acid and ethylene oxide adduct of dialkylphosphoric acid. Examples of the bactericide or preservative include phenol compounds such as o-phenylphenol and tetrachlorophenol,
Examples thereof include formaldehyde donor compounds such as 2-hydroxymethyl-2-nitro-1.3-propanediol.

These known lubricating oil additives may be used alone or in combination of several kinds. The method of blending the lubricating oil additive and the mixture thereof with the aluminum cold rolling oil composition is arbitrary and can be blended by various methods. However, normally, those soluble in the rolling oil stock solution (except the component (E) in some cases) consisting of the components (A) to (E) or the components (A) to (F) are dissolved in the rolling oil stock solution. In addition, it is preferable that those which are insoluble or hardly soluble in the rolling stock solution be dissolved in water in advance and then be mixed with water in the form of an aqueous solution.

The blending amount of the lubricating oil additive and the mixture thereof is also optional, but is usually 15 parts by weight or less, preferably 10 parts by weight or less, based on 100 parts by weight of the total of the components (A) to (D). .

[Examples of the Invention] Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples. However, the following Examples and Comparative Examples do not impose any limitation on the present invention.

Examples 1 to 5 and Comparative Examples 1 to 3 According to the compositions shown in Table 1, aluminum cold rolling oil compositions according to the present invention (Examples 1 to 5) were prepared. For comparison, according to the composition shown in Table 2, the components (C) and (E) were not added (Comparative Example 1), the components (E) were not added (Comparative Example 2) and the component (E) were added. What added the (F) component without adding (Comparative Example 3) was also prepared. In the compositions of the above Examples and Comparative Examples,
The benzoate as the component (E) is dissolved in water in advance to obtain 10% by weight.
It was prepared as an aqueous solution and mixed with water in the form of an aqueous solution together with other components.

Next, with respect to the compositions of these Examples and Comparative Examples, an aluminum plate was rolled under the following conditions. Then, after leaving the rolled coil at 50 ° C. for 48 hours, the state of water stain on the surface of the aluminum plate was visually observed, and the generation of water stain on the entire surface of the water stain was set to 0, and the generation of water stain was set to 10 10
The tendency of preventing the occurrence of water stain of the composition was evaluated by a graded evaluation.

The results are shown in Tables 1 and 2.

[Rolling conditions] Work roll system: 204 mmφ, body length 220 mm Rolled material: A3004H material, sheet width 130 mm, sheet thickness: 0.4 mm, length 300 m, rolling speed: 100 m / min, rolling reduction: 40%, [Effects of the Invention] As can be seen from the results of water stain generation evaluation in Tables 1 and 2, the compositions (Examples 1 to 3) according to the specific invention of the present invention do not contain the component (E). It is apparent that the tendency of water stain to occur is remarkably improved as compared with the cases (Comparative Examples 1 and 2).

In addition, in the case where only the component (F) was added without adding the component (E) (Comparative Example 3), the occurrence of water stain was higher than that of the composition of Comparative Example 2 having the same composition but not the component (F). Whereas the tendency is not improved, the compositions of Examples 4 to 5 in which the component (F) is further added according to the second aspect of the present invention are the compositions of Examples 1 to 3 in which the component (F) is not added. The tendency of water stain is more improved than that of the product. From this, it is clear that the synergistic effect of the component (E) and the component (F) for preventing the occurrence of water stain.

As described above, the composition according to the specific invention of the present invention, which comprises the components (A) to (E), can prevent the generation of water stain, and further includes the component (F). The composition according to the above can further prevent the generation of water stain.

Therefore, the composition of the present invention is suitably used as an aluminum cold rolling oil.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location C10M 129: 32 129: 38 129: 16 145: 26 129: 50 133: 44) C10N 10:02 20 : 02 30:00 A 8217-4H Z 8217-4H 40:24 A 8217-4H

Claims (2)

[Claims] 1. A: 10 to 90 parts by weight of an aliphatic monohydric alcohol having 8 to 22 carbon atoms, and (B) a mineral oil having a viscosity of 1.5 to 35 cSt at 40 ° C., 0 to 80.
Parts by weight, (C) 0.1 to 10 parts by weight of aliphatic monocarboxylic acid having 8 to 20 carbon atoms, (D) general formula [Wherein, R ₁ and R ₃ are hydrogen, a hydrocarbon group or an acyl group, R ₁ and R ₃ may be the same or different, R ₂ is an alkylene group, and b is 1 to 6 and a Xb is 1 to 20] 0.1 to 20 parts by weight of a surfactant represented by the following formula: 100 parts by weight of the components (A) to (D), and (E) an alkali metal salt of benzoic acid and / Alternatively, an aluminum cold rolling oil composition comprising an amine salt and water in an amount of 0.01 to 10 parts by weight per 100 parts by weight of the total of components (A) to (D) as an essential component. 2. (A) 10 to 90% by weight of an aliphatic monohydric alcohol having 8 to 22 carbon atoms, and (B) a mineral oil having a viscosity of 1.5 to 35 cSt at 40 ° C., 0 to 80.
% By weight, (C) 0.1 to 10% by weight of aliphatic monocarboxylic acid having 8 to 20 carbon atoms, (D) general formula [In the formula, R ₁ and R ₃ are hydrogen, a hydrocarbon group or an acyl group, R ₁ and R ₃ may be the same or different, R ₂ is an alkylene group, and n is 1 to 6, m Xn is 1 to 20] 0.1 to 20% by weight of a surfactant represented by the formula: (A) to (D) 100 parts by weight in total, (E) an alkali metal salt of benzoic acid and / or 0.01 to 10 parts by weight of amine salt to 100 parts by weight of total weight of components (A) to (D), and (F) benzotriazole to 100 parts by weight of total weight of components (A) to (D). On the other hand, an aluminum cold rolling oil composition obtained by blending 0.01 to 6 parts by weight with water as an essential component.