WO2005105962A1

WO2005105962A1 - Metalworking fluid composition

Info

Publication number: WO2005105962A1
Application number: PCT/JP2005/008139
Authority: WO
Inventors: Akihiro Shishikura
Original assignee: Idemitsu Kosan Co., Ltd.
Priority date: 2004-04-28
Filing date: 2005-04-28
Publication date: 2005-11-10
Also published as: CN1946834A; CN1946834B; JP4769426B2; TW200609345A; JP2005314558A

Abstract

Disclosed is a metalworking fluid composition containing a base oil (A), a bentonite clay mineral (B) processed with an organic matter, and an active sulfur compound (C). This metalworking fluid composition has excellent working performance on materials not easily processable such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials and aluminum thick plates. Although this metalworking fluid composition is a non-chlorine metalworking fluid, it exhibits more excellent processing performance than chlorine metalworking fluids.

Description

Specification

Metalworking oil composition

Technical field

The present invention relates to a metal working oil composition, and more particularly, to a non-chlorine-based metal working oil composition that can be applied to the processing of difficult-to-treat materials.

Background art

[0002] Until now, difficult-to-process materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum plate materials have been processed with chlorinated oils containing chlorinated paraffin, stearic pentachloride, and the like. Had been processed.

However, in recent years, treatment of chlorine-containing lubricating oil has become complicated and costly due to environmental problems, and has been forced to switch to non-chlorine-based metal working oil.

Therefore, research and development are under way to achieve this.For example, sulfur-based materials such as polysulfide, sulfurized oil and fat, calcium sulfonate, Zn_DTP, etc. Metalworking oils composed mainly of base materials (see Patent Documents 1 to 4), oils composed of fatty acids and their alkaline earth metal salts or their esters (see Patent Documents 5 and 6), oxalic acid, etc. (See Patent Document 7), etc., to which a chemical conversion treatment material is applied. However, in all of these, when machining difficult-to-machine materials such as stainless steel, the deterioration in workability due to poor lubrication is noticeable. Specifically, tool wear of the mold and galling scratches on the surface At present, its performance is lower than that of chlorine-based oils.

Therefore, further research is underway.

[0003] Patent Document 1: JP-A-8-33253

Patent Document 2: JP-A-9111278

Patent Document 3: JP 2001-49279 A

Patent Document 4: JP-A-2002-155293

Patent Document 5: JP 2002-38181 A

Patent Document 6: JP-A-2003-49185 Patent Document 7: JP-A-2002-88387

Disclosure of the invention

Problems to be solved by the invention

[0004] The present invention has been made under the above-described circumstances, and is also applicable to difficult-to-make materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum thick plate materials. It is an object of the present invention to provide a metal oil composition having excellent processability, and even with a non-chlorine-based processing oil, having better processability than a chlorine-based processing oil.

Means for solving the problem

[0005] The present inventors have conducted intensive studies to achieve the above object, and as a result, have solved the above problem by using a metal working oil composition containing a specific sulfur compound and a specific clay mineral. I found that I got it. The present invention has been completed based on strong knowledge.

[0006] That is, the present invention provides

(1) a metal working oil composition comprising (A) a base oil, (B) a bentonite clay mineral treated with an organic substance, and (C) an active sulfur compound;

(2) The metalworking oil composition according to (1), wherein the bentonite clay mineral treated with the organic substance of (B) is bentonite or montmorillonite treated with a quaternary ammonium salt.

(3) The metal working oil composition according to (1) or (2), wherein the active sulfur compound of (C) is a dialkyl polysulfide and / or a sulfurized fat or oil.

(4) Furthermore, (D) (i) fats and oils, (ii) fatty acids having 6 to 24 carbon atoms, (iii) esterified conjugate thereof, (iV) dibasic acids having 12 to 40 carbon atoms, (V) An ester compound, and (Vi) a phosphorus-containing compound. The metalworking oil composition according to any one of the above (1) to (3), comprising at least one selected compound,

(5) Metal working force of metal working The metal working according to any one of (1) to (4) above, which is an iron-based metal material, a chromium-based metal material, a nickel-based metal material, or an aluminum plate material. Oil composition,

(5) The above (1) to (5), wherein the metal working is any one of drawing, cutting, drawing, forging, punching, punching, fine blanking, and swaging. A metalworking oil composition according to any of the above, Is to provide.

The invention's effect

[0007] According to the metalworking oil composition of the present invention, it is excellent in processing of difficult-to-process metal materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum plate materials. It is a metal working oil composition that has a property and has excellent workability even if it is a non-chlorine processing oil.

BEST MODE FOR CARRYING OUT THE INVENTION

[0008] The present invention is a metalworking oil composition comprising (A) a base oil, (B) a bentonite clay mineral treated with an organic substance, and (C) an active sulfur compound.

[0009] The base oil of component (A) that constitutes the metalworking oil composition of the present invention is not particularly limited. Representative examples include mineral oil, synthetic oil, and polymer compounds. As the above mineral oil, various oils can be used. A kinetic viscosity at a force of 40 ° C. of 1 to: 1000 mm ² Zs, particularly ² to 500 mm ² / s is suitably used. If the kinematic viscosity is less than lmm ² Zs, the flash point is low, which is not preferable for safety.If the kinematic viscosity exceeds 1000 mm ² / s, the amount of oil that adheres to the paint (the object to be polished) is increased. It is not preferable because it may not be economical. Various examples of such mineral oils can be given. For example, a distillate obtained by distilling a paraffin-based crude oil, an intermediate-based crude oil or a naphthenic-based crude oil under normal pressure, or by distilling the residual oil of normal pressure distillation under reduced pressure, or a distillate obtained by a conventional method. Accordingly, refined oils obtained by refining, for example, solvent refined oils, hydrogenated refined oils, dewaxed oils, clay treated oils and the like can be mentioned.

[0010] Examples of the synthetic oil include poly-a-olefins and olefin copolymers having 8 to 14 carbon atoms (eg, ethylene propylene copolymer), or branched olefins such as polybutene and polypropylene, and hydrides thereof. For the ester, ester compounds such as polyol esters (eg, fatty acid esters of trimethylolpropane and fatty acid esters of pentaerythritol), dibasic acid esters, and alkylbenzenes can be used.

[0011] Further, as the polymer compound, a compound having a kinematic viscosity at 100 ° C in the range of 10 to 8000 mm ² / s, which is preferably a hydrocarbon polymer compound or an oxygen-containing polymer compound, is preferred. Like That's right. Examples of such a high molecular compound include polyolefin, polybutene, polyisobutylene, polyalkylene alcohol, polymethatalylate, and olefin copolymers (for example, ethylene-propylene copolymer, styrene-butadiene copolymer, styrene-isoprene). And the like). Among these polymer compounds, hydrocarbon-based polymer compounds such as polyolefin, polybutene, and polyisobutylene are more preferable. These mineral oils, synthetic oils, and high molecular compounds may be used alone or in combination of two or more. Further, the polymer compound may be mixed with a mineral oil or a synthetic oil and used to adjust the kinematic viscosity of the composition.

In the metalworking oil composition of the present invention, a bentonite clay mineral treated with an organic substance is used as the component (B). The bentonite clay mineral treated with this organic substance is an organic ion complex formed by exchanging inorganic cations existing between the crystal layers of the bentonite clay mineral with organic cations, which means so-called organic bentonite. I do.

Here, the bentonite clay mineral includes bentonite and montmorillonite, which is a main component of bentonite. Such bentonite clay minerals preferably have an average particle size of 10 μm or less, more preferably 8 μm or less.

[0013] The bentonite clay mineral is treated with an organic substance. As the organic cation, ammonium ion is preferred, and quaternary ammonium ion is particularly preferred. Specific examples of such an ammonium ion include, for example, quaternary ammonium having the same alkyl group such as tetraethylammonium, tetrabutylammonium, tetraoctylammonium, trimethyloctylammonium, trimethyldecyl, and the like. Ammonium, trimethyldodecylammonium, trimethyltetradecylammonium, trimethylhexadecylammonium, trimethyloctadecylammonium, trimethyleicosanylammonium, trimethyloctadecenylammonium, Trimethylalkylammonium such as trimethyloctacadienammonium, triethyldodecylammonium, triethyltetradecylammonium, triethylhexadecylammonium, and triethyloctadecylammonium Niu tetradecyl ammonium Niu arm, hexadecyl ammonium Niu arm to tributyl, tributyl O Kuta de Shiruanmoniumu like tributyl alkyl ammonium Niu beam of dimethyl O Chi Luan Moni Dihexadecyl ammonium, dimethyl dioctadecyl ammonium, dimethyl dioctadedecane ammonium, dimethyl dioctadecadienammonium, etc., dimethyl dimonium, getyl dihexadecyl ammonium, getyl dioctadecyl ammonium To dibutyldialkylammonium and methylbenzyl such as tilditetradecylammonium, dibutyldihexadecylammonium and dibutyldioctadecylammonium To methylbenzyldialkylammonium and dibenzyldime such as oxadecylammonium Dibenzyldialkylammonium such as xadecylammonium, trioctylmethy

, Such as tripalmitoyl methyl ammonium, trioleyl methyl ammonium, tristearyl methyl ammonium, trialkyl methyl ammonium, trioctyl ethyl ammonium, and trialkyl ethyl ammonium such as tridodecyl ethyl ammonium. Quaternary ammonium having an aromatic ring, such as trialkylbutylammonium, trimethylbenzylammonium, and the like, and aromatic amines, such as trimethylphenylammonium. And quaternary ammonium ions derived therefrom.

By blending the bentonite clay mineral as described above in the presence of the active sulfur compound (C), the processability can be enhanced. Further, by treating with an organic substance, it can be stably dispersed in the base oil, and its compounding effect can be exhibited stably.

The bentonite clay minerals treated with these organic substances may be used alone or in combination of two or more.

The amount of bentonite clay mineral treated with a strong organic substance is preferably 0.5 to 10% by mass, based on the composition. ) Can be selected as appropriate. For example, the kinematic viscosity at 40 ° C used for drawing, pressing, punching, cold forging, etc. is approximately 0.5 to 3% by mass for low viscosity oil of ^{20 to} 500 mm ² / s, Kinematic viscosity at 40 ° C used for drawing, punching, etc. For high viscosity oils of about 500 mm ² / s or more, it is preferable to add about 3 to 10% by mass.

[0015] Next, the active sulfur compound as the component (C) constituting the metalworking oil composition of the present invention is defined as "3" or more in a copper plate corrosion test prescribed in JIS K 2513 because of containing active sulfur. Refers to a compound that shows the determination result. If it is an inactive sulfur compound that is less than an active sulfur compound, the processability cannot be improved, and it is unsuitable as the component (C). The active sulfur compound used in the present invention includes, for example, olefin polysulfide, dialkyl polysulfide, sulfurized oil and fat, or sulfurized mineral oil or elemental sulfur (sulfur powder).

[0016] The above-mentioned olefin polysulfide can be obtained by reacting a force S that can be produced by various methods, for example, an olefin having 3 to 20 carbon atoms or a dimer or tetramer thereof with a sulfide agent. It is something that can be done. Here, as the olefin having 3 to 20 carbon atoms, for example, propylene, isobutene, diisobutene and the like are preferably used. On the other hand, examples of the sulfurizing agent include sulfur, sulfur chloride, and sulfur halide. The Iou content of the obtained that O reflex in polysulphide by the above reaction, usually, those 10 to 50 mass ^_0/0, solubility, stability, desirable in terms of economic efficiency.

The dialkyl polysulfide is, for example, a compound represented by the general formula (I)

[0018] [Formula 1]

R ¹ — Sx— R ² · · · · (I)

[In the formula, R ¹ and R ² each represent an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkyl aryl group having 7 to 20 carbon atoms or a carbon atom having 7 carbon atoms. Represents up to 20 arylalkyl groups, which may be the same or different from each other. X represents a real number of 2 to 8 (specifically, a rational number). ] It is a compound represented by these. Specific examples of R ¹ and R ² in the general formula (I) include a methyl group, an ethyl group, an n_propyl group, an isopropyl group, an n_butyl group, an isobutyl group, a see-butyl group, a t_butyl group, Various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various dodecyl groups, Examples include cyclohexyl, cyclooctyl, phenyl, naphthyl, tolyl, xylyl, benzinole, phenethyl and the like.

As the dialkyl polysulfide, a compound in which X is 3 to 6, R ¹ and R ² are an alkyl group having 16 to 20 carbon atoms and an aryl group having 6 to 20 carbon atoms is preferable. Specifically, for example, dibenzyl disulfide di-t-nonyl polysulfide and the like can be mentioned, and those containing 10 to 50% by mass of sulfur are particularly preferable.

[0020] The above-mentioned sulfurized oils and fats refer to sulfides of animal and vegetable oils, and include, for example, sulfurized lard, sulfurized rapeseed oil, sulfurized castor oil, and sulfurized soybean oil. The sulfurized oils and fats also include disulfide fatty acids such as oleic sulfide and sulfurized esters such as methyl oleate. As the sulfurized fat, those containing 5 to 30% by mass of sulfur are preferable.

As the sulfide mineral oil or elemental sulfur, a commercially available sulfide mineral oil may be used, or elemental sulfur (sulfur powder) may be added to ordinary mineral oil, for example, at a temperature of about 120 to 150 ° C. A material prepared by heating and stirring for about 30 minutes to 6 hours may be used. The sulphide mineral oil preferably contains sulfur in an amount of 0 :: to 2% by mass.

[0021] In the present invention, among the above-mentioned various active sulfur compounds, dialkyl polysulfidoca S is preferable. Among them, dioctyl polysulfide, didodecyl polysulfide and the like are preferable from the viewpoints of effect and availability.

These active sulfur compounds may be used alone or in combination of two or more.

The compounding amount of the compound containing active sulfur as the component (C) is not particularly limited, but is preferably added so that the sulfur content is 1 to 30% by mass based on the composition. Within this range, the desired workability can be obtained, and inconveniences such as wear of the mold and tool can be suppressed. Further, since the active sulfur compound has a different sulfur content, it varies depending on the selected sulfur compound, but usually 5 to 70% by mass based on the composition is preferably 15 to 60% by mass. Is more preferred.

[0022] The metalworking oil composition of the present invention further comprises, as component (D), (i) fats and oils, (ii) fatty acids having 6 to 24 carbon atoms, (iii) ester compounds thereof, and (iV) 12 to 40 carbon atoms. At least one selected from the group consisting of (B) a dibasic acid, (V) an ester compound thereof, and (Vi) a phosphorus-containing compound. preferable. Thereby, workability can be further improved.

Examples of (i) oils and fats here include vegetable oils such as soybean oil, linseed oil, rapeseed oil, and animal oils such as beef tallow and lard. The (ii) fatty acid having 6 to 24 carbon atoms is not particularly limited, but typical examples thereof include oleic acid and stearic acid. As the (iV) dibasic acid having 12 to 40 carbon atoms, various known ones can be used. Representative examples thereof include adipic acid, sebacic acid, 1,8-dicarboxyoctane, and 1,20-dicarboxy acid. Shiicosan, and the like.

As the ester compounds, esters of those fatty acids or dibasic acids with alcohols having carbon numbers of! To 24 are preferred. For example, dibutyl adipate, di-2-ethylhexyl adipate, sebacic acid G2-ethylhexyl and the like.

[0023] Next, (Vi) phosphorus-containing compounds include alkyl phosphates, amino acids, iodine phosphates and amine salts thereof, zinc dithiophosphate and molybdenum dithiophosphate, each of which is a known compound. it can. Among these phosphorus-containing compounds, particularly preferred compounds include dilauryl hydrogen phosphite, trinoninolephosphite, oleyl acid phosphate, trioleyl phosphate, tallow amine salt of 2-ethynolehexyl acid phosphate, and the like. Zinc diphosphate, molybdenum diphosphate and the like.

One of these phosphorus-containing compounds may be used alone, or two or more of them may be used in combination.

The compounding amount of such a phosphorus-containing compound is preferably from 0.1 to 10% by mass, more preferably from 0.5 to 8% by mass. If the compounding amount of the phosphorus-containing compound is 0.1 to 10% by mass, the purpose of improving the workability is achieved, and there is no fear that the molds and tools are worn.

[0024] In the metalworking oil composition of the present invention, known additives can be further blended within a range not inconsistent with the object of the present invention. Such additives include, for example, phenolic and amine-based antioxidants, benzotriazole-based and thiazole-based corrosion inhibitors, metal sulfonate-based and succinic ester-based antioxidants, and silicones. And fluorinated silicon-based antifoaming agents, and polymetaacrylate-based and olefin copolymer-based viscosity index improvers. The amounts of these additives can be appropriately selected according to the purpose. It is good, but it is usually blended so that the total of these additives is 20% by mass or less based on the composition.

The kinematic viscosity of the metalworking oil composition of the present invention, in particular restrictions apart, but Le Shi preferred those in the range of approximately 20 ~20000mm ² / s,. If the kinematic viscosity of the metal working oil composition is in the range of about 20 to 20000 mm ² / s, workability is good, safety can be ensured in terms of flammability, etc. There is no problem economically in terms of the amount that can be attached and removed.

The metalworking oil composition of the present invention can be used for all kinds of metalworking. Can be used. There are no particular restrictions on the type of metalworking method using the metalworking oil composition of the present invention, for example, drawing, cutting, drawing, forging, punching, punching, fine blanking. It can be used for processing and swaging.

Example

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

(Evaluation method)

The following methods were used to evaluate the sample oils obtained in each of the examples and comparative examples.

(1) Cylindrical drawing experiment

A cylindrical drawing experiment was performed under the following conditions.

Experimental machine: JT Toshi deep drawing tester

Board material: SUS304 (0> 70mm, thickness 0.8mm)

Punch: SKD11 32. Omm, shoulder R = 5mm)

Dice: SKD11 34.8mm, shoulder R = 5mm)

Pressing force: 0.4 t

Aperture depth: 20mm

Punch speed: 10mm / s

Evaluation item: The punch load was measured when 20 sheets were machined, the surface condition of the tool and the sheet was observed, and the presence or absence of wear and scratches was examined.

(2) Intermittent cutting experiment

An intermittent cutting test was performed under the following conditions. This experiment can also evaluate fine blanking workability.

Work: SKD11, 81, 8 slits

Tool: Carbide

Cutting speed V: 50m / min (200rpm)

Depth of cut t: lmm, edge f = 1 μm rev

Cutting length L: 5mm X 5 times, return

Total number of passes: 5mm X 5 times X 8 slits ÷ 0.001mm = 200,000 passes

Main blanking equivalent to 200,000 shots)

Evaluation items: Feed force (processing stability) and tool wear were observed.

(3) Flat plate drawing experiment

An experiment was performed under the following conditions.

Testing machine: Instron testing machine

Reduction area: 7.2%

Sliding speed: 200mm / s

Test temperature: 22 ° C

Pulling distance: 150mm

Test piece (plate): SUS304 (10 mm x 300 mm x 4 mm)

Punch: WC (1R)

Evaluation item: Compare average pull-out resistance

(4) Cold forging experiment

A cold forging experiment was performed under the following conditions.

Testing machine: SAKAMURA NP-450H

Steps: 4 hits

Processing speed: 150 pieces / min Test piece: Hexagon flange nut manufacturing S-45C ((ί> 19mm X 9.5 X 10mm) Punch and die material: SKH, SKD

(Sample oil and comparative oil)

Comparative oil 1

Commercially available chlorine-based drawing oil (Kinematic viscosity at 40 ° C: 29 mm ² / s, chlorine content: 18.6% by mass)

Commercially available non-chlorinated drawing oil (Kinematic viscosity at 40 ° C: 78 mm ² / s, sulfur content: 2.6% by mass) Comparative oil 3

40% by mass of naphthenic mineral oil with a kinematic viscosity of 9.5mmVs at 40 ° C, 40% by mass of active sulfur-based polysulfide (Dailoop 3940 manufactured by Dainippon Ink), 18% by mass of phosphorus-based compound (VANLUBE 672 by Vanderbilt), organic material treatment 2% by mass of bentonite (Hengyun's Wenger ^ 1?), Which had not been treated, was mixed to prepare an oil agent with an apparent kinematic viscosity of 46 mm ² / s at 40 ° C.

Comparative oil 4

Commercially available chlorine-based drawing oil (kinematic viscosity at 40 ° C is 17600 mm ² / s, chlorine content is 28.3 mass%

)

[0028] Sample oil 1

40% by mass of naphthenic mineral oil with a kinematic viscosity of 9.5mm ² / s at 40 ° C, 40% by mass of active sulfur-based polysulfide (Dailoop S940 manufactured by Dainippon Ink), 18% by mass of phosphorus-based compound (VA NLUBE 672 by Vanderbilt) %, 2 mass% of bentonite treated with quaternary ammonium (S-BEN NZ manufactured by Hoziyun) was mixed to prepare an oil agent with a sulfur content of 13.2 mass% and a kinematic viscosity at 40 ° C of 46 mm ² Zs. . For mixing, first, the naphthenic mineral oil and the surface-modified bentonite are stirred and mixed at 100 ° C and 350 rpm for 1 hour, and then the remaining base material is maintained at a temperature of 100 ° C in the order of active sulfur-based polysulfide and phosphorus-based compound. They were mixed sequentially.

Sample oil 1 2

30% by mass of naphthenic mineral oil with a kinematic viscosity of 30 mm ² Zs at 40 ° C, 20% by mass of a naphthenic mineral oil with a kinematic viscosity of 100 mm ² / s at 40 ° C, active sulfur-based polysulfide (Dinorebe S940 manufactured by Dainippon Ink and Chemicals, Inc.) ) 43 weight ^_0/0, Jin lottery Chio phosphate (OLONITE made OLOA 260 5% by mass and 2% by mass of bentonite (S-BEN NZ manufactured by Hoziyun) treated with a quaternary ammonium were mixed to prepare an oil agent having a kinematic viscosity of 78 mm ² Zs at 40 ° C.

[0029] Sample oil one 3

100 polybutene 43% by weight of kinematic viscosity ° C is 4300mm ² / s (Idemitsu Petrochemical Ltd. 20000 H), active sulfur-polysulfide (Dainippon Ink Dairupu ≤940) 40 wt%, dibasic acid having a carbon number of 22 ( Okamura Oil 1-11_22) 6% by mass, bentonite treated with quaternary ammonium (S-BEN NZ by Hoziyun) 8% by mass, thickener (Sanyo Chemical Industries Group 915) 3% by mass After mixing, a special oil for drawing having a kinematic viscosity of 13000 mm ² / s at 40 ° C was prepared.

[0030] Sample oil 4

The sulfur compound in sample oil 1 was changed to 40% by mass of sulfurized lard (SULFURIZED LAR 0 manufactured by Dainippon Ink), and an oil agent with a sulfur content of 5.6% by mass and a kinematic viscosity at 40 ° C of 52 mm ² / s was prepared.

Sample oil 5

The sulfur compound of sample oil 1 was changed to 30% by mass of sulfided oil (ANGLAMOL 81 manufactured by Nippon Noreprisol), and an oil agent with a sulfur content of 9.8 wt% and a kinematic viscosity at 40 ° C of 64 mm ² / s was prepared.

[0031] Sample oil one 6

Change the phosphorus compound of the sample oil _ 1 methyl Orein acid (manufactured by NOF UNISTER M_ 182A) 1 8 wt%, a sulfur content of 12. 8 wt%, 40 kinematic viscosity ° C to adjust the oil of 37 mm ² Zs did.

Sample oil 1 7

Sample oil-1 phosphorus compound was changed to rapeseed oil (Hyersin rapeseed white squeezed oil from Summit Oil) to 18% by mass, and an oil agent with a sulfur content of 13.1% by mass and a kinematic viscosity at 40 ° C of 42mm ² Zs was adjusted. did.

Sample oil 1 8

The phosphorus compound of sample oil-1 was changed to 18% by mass of diethylhexyl sebacate (DOS manufactured by Sanken Kako Co., Ltd.), and the sulfur content was 12.6% by weight and the kinematic viscosity at 40 ° C was 45 mm ² / s. Prepare oil agent It was adjusted.

Sample oil 1 9

Naphthenic mineral oil with a kinematic viscosity of 9.5 mm ² / s at 40 ° C 41.5% by mass, active sulfur polysulfide (Dailoop 3940 manufactured by Dainippon Ink) 40% by mass, diethyl ethyl sebacate hexyl DENKA 18% by mass, bentonite treated with quaternary ammonium (S-BEN NZ by Hojyun) 0.5% by mass was mixed to obtain a sulfur content of 12.8% by weight and a kinematic viscosity of 40 ° C. An oil solution of 54 mm ² / s was adjusted.

Example 1

The cylinder drawing experiment (1) was performed for the sample oils 1, 4 to 8 and the comparative oils 1 to 3. Table 1 shows the results.

[0033] [Table 1] Table 1

Note) Precipitation occurred in the oil agent, and surface unevenness occurred from the first processed sheet.

[0034] According to Table 1, sample oils 1 and 4 to 8 are all inferior to the chlorinated processing oil of comparative oil 1, and even when 20 plates are processed, the punch load is low and stable. The test piece and tool showed excellent workability without abrasion or scratching.

On the other hand, in Comparative Oil-12, there was no wear or scratch on the tool, but vertical scratches were generated on the test piece immediately after the start, and countless large and small vertical scratches were finally observed. The comparative oil 13 had an unstable dispersion state and easily precipitated upon standing. The surface condition was uneven in the first sheet of deep drawing. Example 2

The intermittent cutting experiment of (2) was performed for the sample oil-2 and the comparative oil-1.

(Experimental result):

Regarding tool wear, it was confirmed that the comparative oil _ 1 exceeded 110,000 passes, the feed component reached 150 N, and the tool edge was in a worn state, whereas the sample oil _ 2 was 200,000 No ,. S120N and low power.

In addition, the wear area of the tool edge after the experiment was 2/3 in the case of the sample oil-12 and in the case of the comparative oil-11.

From this result, it was found that the sample oil 2 can perform more stable cutting than the comparative oil 1 (chlorine-based oil), and the tool abrasion is small. The results also show that sample oil-2 is excellent as a cutting oil and a punching oil.

Example 3

For the sample oil-3 and the comparative oil-4, a flat plate drawing experiment (3) was performed. Table 2 shows the results.

[0036] [Table 2

Unit: kgf

[0037] Sample oil No. 3 has no galling or scratches in any material. According to Table 2, most materials can be processed with a lower drawing force than comparative oil-4 (chlorine-based oil). It is.

Example 4

The cold forging experiment of (4) was performed for the sample oil_9 and the comparative oil_2. As a result, tool abrasion was remarkably observed with 30,000 sulfur-based metal working oils in Comparative Oil No. 2, and the mold had to be changed.On the other hand, in Sample Oil No. 19 according to the present invention, it was 105,000. Individual processing is possible I got it.

Industrial applicability

The metalworking oil composition of the present invention has excellent workability even for difficult-to-work materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, or aluminum plate materials, Even a non-chlorine-based oil is a metal-based oil composition that has superior addability than a chlorine-based oil.

Claims

The scope of the claims

[1] A metalworking oil composition comprising (A) a base oil, (B) a bentonite clay mineral treated with an organic substance, and (C) an active sulfur compound.

[2] The metalworking oil composition according to claim 1, wherein the metalworking oil composition is bentonite or montmorillonite treated with a quaternary ammonium salt.

3. The metalworking oil composition according to claim 1, wherein the active sulfur compound (C) is a dialkyl polysulfide and / or a sulfurized oil or fat.

[4] Further, (D) (i) fats and oils, (ii) fatty acids having 6 to 24 carbon atoms, (iii) ester compounds thereof, (iV) dibasic acids having 12 to 40 carbon atoms, (V) ester dianilides The metalworking oil composition according to any one of claims 1 to 3, wherein the metalworking oil composition comprises at least one compound selected from a compound and a (Vi) phosphorus-containing compound.

[5] The metalworking oil composition according to any one of claims 1 to 4, wherein the material to be worked in metalworking is an iron-based metal material, a chromium-based metal material, a nickel-based metal material, or an aluminum thick plate material.

[6] The method according to any one of claims 1 to 5, wherein the metal processing is any one of drawing, cutting, drawing, forging, punching, punching, fine blanking, and swaging. A metalworking oil composition as described.