JP2005314558A - Metalworking oil composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metalworking oil composition having excellent workability to a hardly workable material such as iron-based metal material, chromium-based metal material, nickel-based metal material or thick aluminum plate, composed of a non-chlorine working oil and, nevertheless, having a workability superior to a chlorine-based working oil. <P>SOLUTION: The metalworking oil composition contains (B) a bentonite clay mineral treated with an organic material and (C) an active sulfur compound in (A) a base oil. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a metalworking oil composition, and more particularly to a non-chlorine metalworking oil composition that can be applied to processing difficult-to-process materials.

Until now, difficult-to-process materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum thick plate materials have been processed with chlorinated oils containing chlorinated paraffin and pentachlorostearic acid. It was.
However, in recent years, the treatment of chlorine-containing lubricating oil has become complicated and expensive due to environmental problems, and it has been forced to switch to non-chlorine metalworking oil.
Therefore, research and development has been promoted to realize this, for example, as a substitute for chlorine-based substrates, polysulfides, sulfurized fats and oils, calcium sulfonates, sulfur-based substrates such as Zn-DTP, and phosphorus-based groups such as phosphate esters. Metal processing oil (see Patent Documents 1 to 4) mainly composed of wood, oils composed of fatty acids and their alkaline earth metal salts or esters (see Patent Documents 5 and 6), oxalic acid, etc. The thing (refer patent document 7) etc. which applied the chemical conversion treatment material are proposed. However, in all of these, for work that is difficult to process such as stainless steel, the workability is significantly reduced due to poor lubrication, and specifically, tool wear on the mold and surface galling are generated. The current performance is not as good as that of chlorinated oils.
Therefore, further research is underway.

Japanese Patent Publication No.8-33253 Japanese Patent Laid-Open No. 9-111278 JP 2001-49279 A JP 2002-155293 A JP 2002-38181 A JP 2003-49185 A JP 2002-88387 A

  The present invention has been made under the circumstances as described above, and has excellent workability even for difficult-to-work materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum thick plate materials. An object of the present invention is to provide a metalworking oil composition having a processability superior to that of a chlorine-based processing oil, even if it is a non-chlorine-based processing oil.

As a result of intensive studies to achieve the above object, the present inventors have found that the above problems can be solved by a metalworking oil composition containing a specific sulfur compound and a specific clay mineral. . The present invention has been completed based on such findings.

That is, the present invention
(1) A metalworking oil composition comprising (A) a base oil, (B) a bentonite clay mineral treated with an organic substance, 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 treated with a quaternary ammonium salt or montmorillonite,
(3) The metalworking 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) Further, selected from (D) (i) fats and oils, (ii) fatty acids having 6 to 24 carbon atoms, dibasic acids having 12 to 40 carbon atoms, and ester compounds thereof, and (iii) phosphorus-containing compounds. The metalworking oil composition according to any one of (1) to (3), further comprising at least one compound.
(5) The metal processing oil composition according to any one of (1) to (4), wherein the workpiece for metal processing is an iron metal material, a chromium metal material, a nickel metal material, or an aluminum thick plate material. Stuff,
(5) The above (1) to (5), wherein the metal processing is any one of drawing, cutting, drawing, forging, punching, punching, fine blanking, and swaging. The metalworking oil composition according to any one of the above,
Is to provide.

  According to the metalworking oil composition of the present invention, it has excellent workability for processing difficult-to-work materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, or aluminum thick plate materials, Even if it is a non-chlorine type processing oil, it is a metal processing oil composition which has the workability superior to the chlorine type processing oil.

  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.

Although there is no restriction | limiting in particular as a base oil of (A) component which comprises the metalworking oil composition of this invention, Mineral oil, synthetic oil, and a high molecular compound are mentioned as a representative example. Although various things can be used as said mineral oil, The kinematic viscosity in 40 degreeC is 1-1000 mm < ² > / s, Especially the thing of 2-500 mm < ² > / s is used suitably. If the kinematic viscosity is less than 1 mm ² / s, the flash point is low, which is not preferable for safety, and if it exceeds 1000 mm ² / s, the amount of oil that adheres to the workpiece (workpiece) increases and the economy increases. It is not preferable because it may not be correct. Examples of such mineral oil include various oils. For example, distillate obtained by subjecting paraffin-based crude oil, intermediate-based crude oil, or naphthenic-based crude oil to atmospheric distillation, or distilling oil obtained by subjecting atmospheric distillation residue oil to vacuum distillation, or purifying it according to a conventional method. For example, solvent refined oil, hydrogenated refined oil, dewaxed oil, and clay-treated oil can be used.

  Synthetic oils include, for example, poly-α-olefins having 8 to 14 carbon atoms, olefin copolymers (for example, ethylene-propylene copolymers), branched olefins such as polybutene and polypropylene, hydrides thereof, and polyols. Esters such as esters (fatty acid esters of trimethylolpropane, fatty acid esters of pentaerythritol, etc.), dibasic acid esters, alkylbenzenes, and the like can be used.

The polymer compound is preferably a hydrocarbon polymer compound or an oxygen-containing polymer compound, and preferably has a kinematic viscosity at 100 ° C. in the range of 10 to 8000 mm ² / s. Examples of such a polymer compound include polyolefin, polybutene, polyisobutylene, polyalkylene glycol, polymethacrylate, olefin copolymer (for example, ethylene-propylene copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer) and the like. Can be mentioned. Among these polymer compounds, hydrocarbon polymer compounds such as polyolefin, polybutene, and polyisobutylene are more preferable. These mineral oils, synthetic oils, and polymer compounds may be used alone or in combination. Moreover, you may use a high molecular compound in order to mix with mineral oil and synthetic oil, and to adjust the kinematic viscosity of a composition.

In the metalworking oil composition of the present invention, 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 produced by exchanging inorganic cations existing between the crystal layers of bentonite clay minerals with organic cations, meaning so-called organic bentonite. .
The bentonite clay mineral here 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, and more preferably 8 μm or less.

  The organic cation for treating the bentonite clay mineral with an organic substance is preferably an ammonium ion, particularly preferably a quaternary ammonium ion. Specific examples of such ammonium ions include, for example, quaternary ammonium having the same alkyl group such as tetraethylammonium, tetrabutylammonium, tetraoctylammonium, trimethyloctylammonium, trimethyldecylammonium, trimethyldodecylammonium, trimethyltetradecyl. Ammonium, trimethyl hexadecyl ammonium, trimethyl octadecyl ammonium, trimethyl eicosanyl ammonium, trimethyl octadecenyl ammonium, trimethyl alkyl ammonium such as trimethyl octadecadienyl ammonium, triethyl dodecyl ammonium, triethyl tetradecyl ammonium, triethyl hexadecyl ammonium, Triethyloctadecylammonium Such as triethylalkyl ammonium, tributyl dodecyl ammonium, tributyl tetradecyl ammonium, tributyl hexadecyl ammonium, tributyl octadecyl ammonium, dimethyl dioctyl ammonium, dimethyl didecyl ammonium, dimethyl ditetradecyl ammonium, dimethyl dihexadecyl ammonium, Dimethyldialkylammonium such as dimethyldioctadecylammonium, dimethyldioctadecenylammonium, dimethyldioctadecadienylammonium, diethyldidodecylammonium, diethylditetradecylammonium, diethyldihexadecylammonium, diethyldioctadecylammonium, etc. Dialkylammonium Dibutyl didodecyl ammonium, dibutyl ditetradecyl ammonium, dibutyl dihexadecyl ammonium, dibutyl dialkyl ammonium such as dibutyl dioctadecyl ammonium, methyl benzyl dialkyl ammonium such as methyl benzyl hexadecyl ammonium, dibenzyl such as dibenzyl dihexadecyl ammonium Dialkylammonium, trioctylmethylammonium, tridodecylmethylammonium, tritetradecylmethylammonium, tripalmitoylmethylammonium, trioleylmethylammonium, tristearylmethylammonium, etc. Trialkylmethylammonium, trioctylethylammonium, tridodecylethylammonium, etc. Of trialkylethylammonium Ions such as quaternary ammonium ions such as trialkylbutylammonium such as lyoctylbutylammonium and tridodecylbutylammonium and quaternary ammonium having an aromatic ring such as trimethylbenzylammonium and trimethylphenylammonium Can be mentioned.

(C) Component In the presence of an active sulfur compound, workability can be improved by blending the bentonite clay mineral as described above. Moreover, by processing with organic substance, it can disperse | distribute stably with respect to base oil, and can show the compounding effect stably.
The bentonite clay mineral treated with these organic substances may be blended alone or in combination of two or more.
About the compounding quantity of the bentonite-type clay mineral processed with this organic substance, the range of 0.5-10 mass% is preferable on the basis of a composition, and it selects suitably according to the grade (severity) of processing within the range. do it. For example, in the case of a low-viscosity oil having a kinematic viscosity at 40 ° C. of about 20 to 500 mm ² / s used for drawing, pressing and punching, cold forging, etc., about 0.5 to 3% by mass, In a high viscosity oil having a kinematic viscosity at 40 ° C. of about 500 mm ² / s or more used for punching or the like, about 3 to 10% by mass is preferably blended.

Next, the active sulfur compound as the component (C) constituting the metalworking oil composition of the present invention is a judgment result of “3” or more in the copper plate corrosion test specified in JIS K 2513 because it contains active sulfur. The compound which shows this. If it is not an active sulfur compound but an inert sulfur compound, the processability cannot be improved, and it is inappropriate as the component (C).
Examples of the active sulfur compound used in the present invention include olefin polysulfide, dialkyl polysulfide, sulfurized fat and oil, sulfide mineral oil, or elemental sulfur (sulfur powder).

  The olefin polysulfide can be produced by various methods. For example, the olefin polysulfide is obtained by reacting an olefin having 3 to 20 carbon atoms or a dimer or tetramer thereof with a sulfurizing agent. Here, as a C3-C20 olefin, propylene, isobutene, diisobutene etc. are used preferably, for example. On the other hand, examples of the sulfurizing agent include sulfur, sulfur chloride, sulfur halide and the like. The sulfur content of the olefin polysulfide obtained by the above reaction is usually preferably 10 to 50% by mass in terms of solubility, stability and economy.

  In addition, dialkyl polysulfide is, for example, represented by the general formula (I)

Wherein, R ¹ and R ² are each an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group or an arylalkyl group having 7 to 20 carbon atoms of 7 to 20 carbon atoms They may be the same or different from each other. x represents a real number (more specifically, a rational number) of 2 to 8. It is a compound represented by this. Specific examples of R ¹ and R ² in the general formula (I) include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, t-butyl group, Various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various dodecyl groups, cyclohexyl groups, cyclooctyl groups, phenyl groups, naphthyl groups, tolyl groups, xylyl groups, benzyl groups, Examples thereof include a phenethyl group.
The dialkyl polysulfide is preferably 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. Specific examples include dibenzyl disulfide and di-t-nonyl polysulfide, and those containing 10 to 50% by mass of sulfur are particularly suitable.

The sulfurized fats and oils refer to sulfides of animal and vegetable oils, and examples thereof include sulfurized lard, sulfurized rapeseed oil, sulfurized castor oil, and sulfurized soybean oil. The sulfurized fats and oils also include disulfide fatty acids such as sulfurized oleic acid and sulfurized esters such as methyl sulfurized oleate. As this sulfurized oil and fat, what contains 5-30 mass% of sulfur content is suitable.
Moreover, as said sulfide mineral oil or simple substance sulfur, you may use a commercially available sulfide mineral oil, or add simple sulfur (sulfur powder) to normal mineral oil, for example, at the temperature of about 120-150 degreeC, 30 You may use what was prepared by heating and stirring for about minutes to 6 hours. The sulfide mineral oil preferably contains 0.1 to 2% by mass of sulfur.

In the present invention, among the above various active sulfur compounds, dialkyl polysulfide is preferable, and among them, dioctyl polysulfide, didodecyl polysulfide, and the like are preferable from the viewpoints of effects and availability.
These active sulfur compounds may be blended alone or in combination of two or more.
Although the compounding quantity of the compound containing the active sulfur of the said (C) component does not have a restriction | limiting in particular, It is preferable to mix | blend so that a sulfur content may be 1-30 mass% on the basis of a composition. If it is this range, the target workability will be acquired and inconveniences, such as progress of abrasion of a metal mold | die and a tool, can be suppressed. In addition, since the sulfur content is different from the active sulfur compound, it varies depending on the selected sulfur compound, but is usually preferably 5 to 70% by mass, more preferably 15 to 60% by mass based on the composition. preferable.

The metalworking oil composition of the present invention further comprises (i) an oil, (ii) a fatty acid having 6 to 24 carbon atoms, a dibasic acid having 12 to 40 carbon atoms, and an ester compound thereof, as (D) component; iii) It is preferable to blend at least one selected from phosphorus-containing compounds. Thereby, workability can be further improved.
Examples of the (i) fats and oils herein include vegetable oils such as soybean oil, sesame oil and rapeseed oil, and animal oils such as beef tallow and lard. Further, (ii) the fatty acid having 6 to 24 carbon atoms is not particularly limited, but representative examples include oleic acid and stearic acid. As the dibasic acid having 12 to 40 carbon atoms, various known ones can be used. Typical examples include adipic acid, sebacic acid, 1,8-dicarboxyoctane, 1,20-dicarboxyeicosane, Etc.
The ester compounds are preferably esters of these fatty acids or dibasic acids and alcohols having 1 to 24 carbon atoms, such as dibutyl adipate, di-2-ethylhexyl adipate, di-2 sebacate. -Ethylhexyl and the like.

Next, as (iii) phosphorus-containing compounds, alkyl phosphates, hydrogen phosphites and their amine salts, zinc dithiophosphates or molybdenum dithiophosphates are used, and known compounds can be used respectively. Among these phosphorus-containing compounds, particularly preferred compounds are dilauryl hydrogen phosphite, trinonyl phosphite, oleyl acid phosphate, trioleyl phosphate, 2-ethylhexyl acid phosphate beef tallow amine salt, zinc dike Examples thereof include thiophosphate and molybdenum dithiophosphate.
These phosphorus-containing compounds may be blended singly or in combination of two or more.
0.1-10 mass% is preferable and the compounding quantity of such a phosphorus containing compound has more preferable 0.5-8 mass%. If the compounding quantity of a phosphorus containing compound is 0.1-10 mass%, the objective of the workability improvement will be achieved and there is also no possibility that a metal mold | die and a tool will be worn out.

In the metalworking oil composition of the present invention, a known additive can be further blended within a range not contrary to the object of the present invention. Examples of such additives include antioxidants such as phenols and amines, corrosion inhibitors such as benzotriazoles and thiazoles, rust inhibitors such as metal sulfonates and succinates, silicons, fluorine Examples thereof include antifoaming agents such as silicon fluoride, and viscosity index improvers such as polymethacrylate and olefin copolymer. The blending amount of these additives may be appropriately selected according to the purpose, but is usually blended so that the total of these additives is 20% by mass or less based on the composition.
Although there is no restriction | limiting in particular about the kinematic viscosity of the metalworking oil composition of this invention, What is in the range of about 20-20000 mm < ² > / s is preferable. If the kinematic viscosity of the metalworking oil composition is in the range of about 20 to 20000 mm ² / s, the workability is good and safety can be secured from the standpoint of flammability, and the oil agent adheres to the workpiece. There is no economic problem in terms of the amount taken away.
The metal processing oil composition of the present invention can be used for all types of metal processing, but also for processing difficult-to-process materials such as iron-based metal materials, chromium-based metal materials, nickel-based metal materials, and aluminum thick plate materials. Can be used. Moreover, there is no restriction | limiting in particular about the kind of metal processing method using the metalworking oil composition of this invention, For example, drawing, cutting, drawing, forging, punching, punching, fine blanking Can be used for swaging, etc.

EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by this example.
(Evaluation methods)
The sample oil obtained in each example and comparative example was evaluated by the following method.
(1) Cylindrical drawing experiment A cylindrical drawing experiment was performed under the following conditions.
Experimental machine: JT Toshi deep drawing tester Plate material: SUS304 (Φ70mm, thickness 0.8mm)
Punch: SKD11 (φ32.0mm, shoulder R = 5mm)
Dice: SKD11 (φ34.8mm, shoulder R = 5mm)
Wrinkle presser force: 0.4t
Drawing depth: 20mm
Drawing depth: 10mm / s
Evaluation item:
When 20 sheets were machined, the punch load was measured, the surface condition of the tool and the board was observed, and the presence or absence of wear and scratches was examined.
(2) Intermittent cutting experiment An intermittent cutting strip experiment was performed under the following conditions. This experiment can also evaluate fine blanking workability.
Workpiece: SKD11, φ81, 8 slit Tool: Carbide Cutting speed v: 50 m / min (200 rpm)
Cutting depth t: 1 mm, feed f = 1 μm / rev
Cutting length L: Repeated 5 mm x 5 times Total number of passes: 5 mm x 5 times x 8 slits ÷ 0.001 mm = 200,000 passes (Fine blanking equivalent to 200,000 shots)
Evaluation items: Feed force (machining stability) and tool wear were observed.

(3) Flat plate extraction experiment A flat plate extraction experiment was performed under the following conditions.
Testing machine: Instron testing machine Area reduction rate: 7.2%
Sliding speed: 200mm / s
Test temperature: 22 ° C
Pull-out distance: 150mm
Test piece (plate): SUS304 (10 mm x 300 mm x 4 mm)
Punch: WC (1R)
Evaluation item: Comparison of average drawing resistance (4) Cold forging experiment A cold forging experiment was performed under the following conditions.
Testing machine: SAKAMURA NP-450H
Number of steps: 4 steps Processing speed: 150 pieces / minute Test piece: S-45C for hexagonal flange nut production (φ19mm × 9.5 × 10mm)
Punch and die material: SKH, SKD

(Sample oil and comparative oil)
Comparative oil-1
Commercially available chlorinated squeezed oil (kinematic viscosity at 40 ° C. is 29 mm ² / s, chlorine content is 18.6% by mass)
Comparative oil-2
Commercially available non-chlorinated squeezed oil (kinematic viscosity at 40 ° C is 78 mm ² / s, sulfur content 2.6 mass%)
Comparative oil-3
40% by mass of naphthenic mineral oil having a kinematic viscosity at 40 ° C. of 9.5 mm ² / s, 40% by mass of active sulfur-based polysulfide (Dairubu S940 made by Dainippon Ink), 18% by mass of phosphorus compound (VANLUBE 672 manufactured by Vanderbilt), organic matter Untreated bentonite (Hojung Bengel HVP) 2% by mass was mixed to prepare an oil agent having an apparent kinematic viscosity of 40 ° C. and 46 mm ² / s.
Comparative oil-4
Commercially available chlorine-based drawn oil (kinematic viscosity at 40 ° C is 17600 mm ² / s, chlorine content is 28.3 mass%)

Sample oil-1
40% by mass of naphthenic mineral oil having a kinematic viscosity at 40 ° C. of 9.5 mm ² / s, 40% by mass of active sulfur-based polysulfide (Dairubu S940 manufactured by Dainippon Ink), 18% by mass of phosphorus compound (VANLUBE 672 manufactured by Vanderbilt), No. 1 Bentonite (S-BEN NZ made by Hojun) 2% by mass treated with quaternary ammonium was mixed to prepare an oil agent having a sulfur content of 13.2% by mass and a kinematic viscosity at 40 ° C. of 46 mm ² / s. First, naphthenic mineral oil and surface-modified bentonite were stirred and mixed at 100 ° C. and 350 rpm for 1 hour, and then the remaining base materials were sequentially mixed while maintaining the temperature of 100 ° C. in the order of active sulfur polysulfide and phosphorus compound. .
Sample oil-2
Naphthenic mineral oil 30 wt% of kinematic viscosity of 40 ° C. is 30mm ² / s, 40 ℃ naphthenic mineral oil 20 wt% of kinematic viscosity of 100 mm ² / s, the active sulfur-polysulfide (Dainippon Ink Dairubu S940) 43 Weight %, Zinc dithiophosphate (OLONITE OLOA 260) 5% by mass, bentonite treated with quaternary ammonium (Hojun S-BEN NZ) 2% by mass, 40 ° C. kinematic viscosity 78 mm ² / s The oil was adjusted.

Sample oil-3
Polybutene with a kinematic viscosity at 100 ° C. of 4300 mm ² / s 43 mass% (Idemitsu Petrochemical 20000H), active sulfur polysulfide (Dailuo Ink Die-Lube S940) 40 mass%, C22 dibasic acid (Okamura Oil) IPU-22) 6% by mass, bentonite treated with quaternary ammonium (Hojun S-BEN NZ) 8% by mass, thickener (Sanyo Chemical Industries Inc. 915) 3% by mass were mixed, and 40 ° C. A drawing-only oil agent having a kinematic viscosity of 13000 mm ² / s was prepared.

Sample oil-4
The sulfur-based compound of Sample Oil-1 was changed to 40% by mass of sulfurized lard (Dainippon Ink SULFURIZED LARD) to prepare an oil agent having a sulfur content of 5.6% by mass and a kinematic viscosity at 40 ° C. of 52 mm ² / s. .
Sample oil-5
The sulfur-based compound of Sample Oil-1 was changed to 30% by mass of sulfurized oil (ANGLAMOL 81 manufactured by Nippon Lubrizol), and an oil agent having a sulfur content of 9.8 wt% and a kinematic viscosity at 40 ° C. of 64 mm ² / s was prepared.

Sample oil-6
The phosphorus compound of sample oil-1 was changed to 18% by mass of methyl oleate (Nistar M-182A manufactured by NOF Corporation), and an oil agent with a sulfur content of 12.8 wt% and a kinematic viscosity at 40 ° C. of 37 mm ² / s was prepared. did.
Sample oil-7
The phosphorus-based compounds of the sample oil -1 Change rapeseed oil (Summit OIL CHEMICALS Haierushin rapeseed white refined oil) 18 wt%, a sulfur content of 13.1 wt%, a kinematic viscosity of 40 ° C. to adjust the oil of 42mm ² / s did.
Sample oil-8
The phosphorus compound of sample oil-1 was changed to 18% by mass of di-2-ethylhexyl sebacate (DOSE, manufactured by Sanken Chemical Co., Ltd.), and an oil agent having a sulfur content of 12.6 wt% and a kinematic viscosity at 40 ° C. of 45 mm ² / s was prepared. did.
Sample oil-9
41.5% by mass of naphthenic mineral oil having a kinematic viscosity at 40 ° C. of 9.5 mm ² / s, 40% by mass of active sulfur-based polysulfide (Dairubu S940 made by Dainippon Ink), di-2-ethylhexyl sebacate (DOSE, Sanken Chemical) 18% by mass and 0.5% by mass of bentonite (Hojun S-BEN NZ) treated with quaternary ammonium were mixed, and an oil agent having a sulfur content of 12.8 wt% and a kinematic viscosity at 40 ° C. of 54 mm ² / s. It was adjusted.

Example 1
A cylindrical squeeze experiment of (1) was performed for sample oils 1, 4 to 8 and comparative oils 1 to 3. The results are shown in Table 1.

According to Table 1, the sample oils 1 and 4 to 8 are all inferior to the chlorine-based processing oil of the comparative oil-1, and the punch load is low and stable even if 20 plates are processed. The test piece and tool were free from wear and scratches and exhibited excellent workability.
In contrast, Comparative Oil-2 showed no wear or scratches on the tool, but vertical scratches occurred on the specimen immediately after the start, and innumerable large and small vertical scratches were finally observed. Comparative Oil-3 was unstable in dispersion and easily precipitated upon standing. The first surface of the deep drawing was uneven in surface condition.
Example 2
For sample oil-2 and comparative oil-1, the intermittent cutting experiment of (2) was performed.
(Experimental result):
Regarding tool wear, the comparison oil-1 exceeded 110,000 passes, the feed force reached 150 N, and it was confirmed that the tool edge was in a worn state, whereas sample oil-2 was 200000. The feed force to the pass was as low as 120N.
Further, the wear area of the tool edge after the experiment was 2/3 in the case of the sample oil-2 and that in the case of the comparative oil-1.
From this, it was found that Sample Oil-2 can be cut more stably than Comparative Oil-1 (chlorine-based oil) and has less tool wear. Moreover, this result has shown that the sample oil-2 is excellent as cutting oil and punching oil.

Example 3
For sample oil-3 and comparative oil-4, the flat plate drawing experiment of (3) was performed. The results are shown in Table 2.

Sample oil-3 does not cause any galling or scratches in any material, and according to Table 2, it can be processed with a pulling force lower than that of comparative oil-4 (chlorine oil) according to Table 2. .
Example 4
For sample oil-9 and comparative oil-2, the cold forging experiment of (4) was conducted. As a result, tool wear was remarkably observed with 30,000 sulfur-based metalworking oils of comparative oil-2, and the mold was forced to be replaced, whereas sample oil-9 according to the present invention had 105,000. Was possible.

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, and aluminum thick plate materials, and is non-chlorine. Even a metal processing oil is a metal processing oil composition having processability superior to that of a chlorine processing oil.

Claims (6)

A metalworking oil composition comprising (A) a base oil containing (B) a bentonite clay mineral treated with an organic substance and (C) an active sulfur compound. The metalworking oil composition according to claim 1, wherein the bentonite clay mineral treated with the organic substance (B) is bentonite treated with a quaternary ammonium salt or montmorillonite. The metalworking oil composition according to claim 1 or 2, wherein the active sulfur compound (C) is a dialkyl polysulfide and / or a sulfurized fat. Furthermore, at least one selected from (D) (i) fats and oils, (ii) fatty acids having 6 to 24 carbon atoms, dibasic acids having 12 to 40 carbon atoms, and ester compounds thereof, and (iii) phosphorus-containing compounds The metalworking oil composition according to any one of claims 1 to 3, wherein the metal processing oil composition is contained. The metalworking oil composition according to any one of claims 1 to 4, wherein the metalworking material is an iron-based metal material, a chromium-based metal material, a nickel-based metal material, or an aluminum thick plate material. The metal 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. Processing oil composition.