Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
  • C10M105/72—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing sulfur, selenium or tellurium
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
  • C10M169/04—Mixtures of base-materials and additives
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
  • C10M2201/04—Elements
  • C10M2201/043—Sulfur; Selenenium; Tellurium
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/283—Esters of polyhydroxy compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/40—Fatty vegetable or animal oils
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
  • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
  • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
  • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
  • C10M2219/106—Thiadiazoles
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
  • C10N2030/02—Pour-point; Viscosity index
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/20—Metal working
  • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling

Definitions

• the present invention relates to a lubricating oil composition used for fine blanking.
• Patent Document 2 discloses an example of an improvement of a typical cold forging oil, in which an ester oil-based agent is added to a base oil.
• Patent Document 3 describes a lubricating oil composition for processing an iron-based metal material whose main component is a thiadiazole derivative.
• the mold life may be shorter than when a chlorinated oil is used, and at the same time, the product shape may be adversely affected.
• the lubricating oil described in Patent Document 1 may show superiority in processing a part of a thin iron-based material, but overall the workability is not sufficient and the mold life is the target. Unbearable to get the production volume to do.
• the mold is worn, burrs and drooling occur in the product, and a load is applied to the post-processing process.
• Patent Document 2 when an ester oily agent is used, it is difficult to obtain an effect comparable to that of a chlorine oily agent.
• the lubricating oil of Patent Document 3 is not suitable for processing a wide variety of materials, and when the amount added is increased, the operator is exposed to an unbearable odor.
• the object of the present invention is a non-chlorine processing oil suitable for the environment, can obtain a mold life comparable to that of a chlorinated oil, and can obtain a fine product shape.
• the object is to provide a lubricating oil composition for processing.
• the present invention (1) A lubricating oil composition for fine blanking, comprising 10 to 50% by mass of active sulfur compound and 2 to 10% by mass of thiadiazole derivative, and (2) 10 to 50% by mass of active sulfur compound and thiadiazole derivative 2 A fine blanking method, wherein a fine blanking process is performed using a lubricating oil composition containing 10 to 10% by mass; About.
• a mold life comparable to that of a chlorinated oil can be obtained with a non-chlorine processing oil suitable for the environment. Further, according to the present invention, high accuracy of the product shape can be achieved, a good product shape can be obtained, and the load on the post-processing process can be reduced. Furthermore, according to the present invention, high-performance and low-viscosity lubricating oil can be satisfactorily processed, and a sufficient energy saving effect can be obtained.
• Metal working can generally be interpreted as transfer to a workpiece material in the form of a mold. Therefore, in order to improve the product shape, it is necessary to maintain the initial mold state. Particularly in the fine blanking process, the shape of the shear surface and the sag are governed by the adhesion state of the work material and the wear of the mold. From this point of view, as a result of detailed research, mold wear is caused when the work material adheres to the mold due to heat and high surface pressure generated during processing, and the adhered mass is scraped off. It has been found that minute scum is generated on the mold surface, which is the starting point of wear.
• the inventors of the present invention have a viewpoint that it is effective to prevent adhesion of a work material to a mold in order to reduce mold wear and prolong the life of the mold, that is, to obtain a good product.
• active sulfur compounds are effective in preventing adhesion of workpieces to molds, and that high performance can be achieved by adding thiadiazole derivatives.
• the present invention relates to a lubricating composition for fine blanking, comprising 10 to 50% by mass of an active sulfur compound and 2 to 10% by mass of a thiadiazole derivative.
• the active sulfur compound means a compound containing active sulfur in the molecule, and if it is such a compound, it can be used without particular limitation, but from the viewpoint of preventing adhesion to the mold, It is preferable that it is a compound which contains 1 mass% or more of active active sulfur by the measurement according to ASTM D1622, and the compound which contains 3 mass% or more is more preferable.
• a copper plate corrosion test JISK2513
• JISK2513 shows 3 or more activity in a copper plate corrosion test
• examples of such active sulfur compounds include polysulfide, sulfurized fat and oil, powdered sulfur, sulfide mineral oil, sulfide ester, sulfide olein and the like, and these may be used alone or in combination of two or more.
• polysulfide, sulfurized fat and oil, and powdered sulfur are preferable from the viewpoint of preventing adhesion to the mold.
• polysulfide is more preferable, and polysulfide having 3 to 6 sulfur atoms and 12 to 40 carbon atoms is more preferable.
• sulfurized fats and oils as the active sulfur compound, which is used in combination with the above polysulfide. Or may be used alone.
• powder sulfur can also be used independently, since solubility to base oils, such as mineral oil, is low and a compounding quantity is restrict
• the sulfur content including the active sulfur in the active sulfur compound is preferably 20% by mass or more for polysulfide, and preferably 8% by mass or more for sulfurized fats and oils. If the sulfur content is within the above range, the effect of preventing adhesion to the mold can be easily achieved by adjusting the amount of the active sulfur compound added. From the above points, the sulfur content in the active sulfur compound is more preferably 20 to 40% by mass for polysulfide, and more preferably 8 to 30% by mass for sulfurized fats and oils.
• the total sulfur content in the lubricating oil composition is preferably 2 to 15% by mass, more preferably 4 to 15% by mass, from the viewpoint of preventing adhesion to the mold.
• the total content of the active sulfur compound in the lubricating oil composition is 10 to 50% by mass.
• the content is preferably 10 to 40% by mass, and more preferably 10 to 35% by mass from the viewpoint of preventing adhesion to the mold and less odor.
• the content is 10 to 30% by mass in consideration of the above viewpoint and a decrease in the kinematic viscosity at 40 ° C. of the lubricating oil composition due to the incorporation of a large amount of the active sulfur compound.
• the content is preferably 5 to 15% by mass from the above viewpoint and from the viewpoint of suppressing an increase in the coefficient of friction, and in the case of powdered sulfur, 0.2% from the above viewpoint and from the viewpoint of limiting solubility.
• the content is preferably 0.5% by mass.
• the lubricating oil composition of the present invention preferably exhibits an activity of 3 or more in the copper plate corrosion test (JIS K2513), and more preferably exhibits an activity of 4 or more from the viewpoint of application to various materials. .
• the active sulfur compound it is preferable to select and use the type, amount, etc. so as to have such copper plate corrosion test activity.
• thiadiazole derivatives used in the lubricating oil composition of the present invention include 1,4,5-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole derivatives.
• at least one of the carbon atoms constituting each of the thiadiazole rings may be a -Sa-R group (R represents a hydrogen atom or an alkyl group, and a is 0-8.
• a 2,5-bis (N, N-dialkyldithiocarbamyl) -1,3,4-thiadiazole is preferred.
• the alkyl group represented by R is preferably such that the number of carbon atoms is 6 to 30 in total in all R groups in one molecule of thiadiazole, from the viewpoint of improving lubricity.
• the carbon number is 6 to 24.
• a is preferably an integer of 1 to 3, more preferably 1 or 2.
• alkyl group examples include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, various pentyl groups, various hexyl groups, Various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various undecyl groups, various dodecyl groups, tridecyl groups, tetradecyl groups, pentadecyl groups, hexadecyl groups, heptadecyl groups, octadecyl groups, nonadecyl groups, eicosyl groups, etc. be able to.
• thiadiazole derivatives those in a liquid state at room temperature are preferably used from the viewpoint of easy production and storage stability.
• 2,5-dimercapto-1,3,4-thiadiazole, 3,5-dimercapto-1,2,4-thiadiazole, 3,4-dimercapto-1,2,5-thiadiazole, 4,5-dimercapto- Dimercaptothiadiazoles such as 1,2,3-thiadiazole can also be used. Furthermore, mixtures of these can also be used.
• the thiadiazole derivative is contained in an amount of 2 to 10% by mass in the lubricating oil composition of the present invention.
• the content is preferably 3 to 10% by mass, more preferably 3 to 8% by mass, from the viewpoints of improving processability and no odor.
• the content ratio of the active sulfur compound and the thiadiazole derivative is not particularly limited, but is a viewpoint of reducing mold wear and improving mold life. Therefore, the mass ratio is preferably 1 to 25, more preferably 1 to 20, more preferably 1 to 10, and still more preferably 1.3 to 10.
• the lubricating oil composition of the present invention includes an oily agent such as fats and oils, high molecular weight esters, and mixtures thereof from the viewpoint of reducing the roughness of the shear surface. It is preferable to contain.
• oils and fats for example, vegetable oils such as soybean, sesame, rapeseed, olive and palm, animal oils such as beef tallow and lard are preferably used.
• the high molecular weight esters sorbitan esters and pentaerythritol esters are preferably used, and oleic acid esters are preferable among them in the present invention from the viewpoint of preventing precipitation and precipitation at low temperatures.
• the content of the oily agent in the lubricating oil composition is not particularly limited, but is preferably 20 to 60% by mass from the viewpoint of reducing the roughness of the shear surface and facilitating the viscosity adjustment of the lubricating oil composition. More preferably, it is 20 to 50% by mass.
• Base oil and other additives There is no restriction
• the mineral oil various oils can be used, but those having a kinematic viscosity at 40 ° C. of 1 to 1000 mm 2 / s, particularly 2 to 500 mm 2 / s are generally used.
• 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- ⁇ -olefins having 8 to 14 carbon atoms, olefin copolymers (such as ethylene-propylene copolymers), branched olefins such as polybutene and polypropylene, hydrides thereof, and polyols.
• Esters such as esters (fatty acid ester of trimethylolpropane, fatty acid ester of pentaerythritol, etc.), dibasic acid esters, alkylbenzene, and the like can be used.
• polymer compound examples include a hydrocarbon polymer compound or an oxygen-containing polymer compound, and those having a kinematic viscosity at 100 ° C. in the range of 10 to 8000 mm 2 / s are preferable.
• examples of such a polymer compound include polyolefin, polybutene, polyisobutylene, polyalkylene glycol, polymethacrylate, olefin copolymer (eg, ethylene-propylene copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer).
• olefin copolymer eg, ethylene-propylene copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer.
• mineral oils, synthetic oils, and polymer compounds may be used alone or in combination of two or more.
• an extreme pressure agent other than the above, an oily agent other than the above, an antiwear agent, a viscosity modifier, and a dispersing agent within the range not impairing the object of the present invention
• Well-known additives such as corrosion inhibitors, antioxidants, and antifoaming agents can be appropriately blended.
• the total amount of these additives is preferably in the range of 0.01 to 5% by mass relative to the lubricating oil composition.
• calcium sulfonate, phosphorus extreme pressure agent and the like may remarkably increase the friction coefficient, so it is preferable that they are not substantially contained within a range that affects the effects of the present invention. That is, it is more preferable that they are not contained at all in the lubricating oil composition, but they can be used in a range of, for example, 5% by mass or less as long as the objects and effects of the present invention are not affected.
• the kinematic viscosity of the lubricating oil composition of the present invention is not particularly limited, but is preferably in the range of 30 to 260 mm 2 / s at 40 ° C. When the kinematic viscosity is in the above range, workability is good, safety can be ensured from the standpoint of flammability and the like, and it is also preferable from the viewpoint of application method limitation and energy saving. From this point, the kinematic viscosity is more preferably 50 to 250 mm 2 / s.
• the lubricating oil composition of the present invention is preferably used for fine blanking, such as precision punching, and can be suitably used without being limited to the work material to which it is applied.
• Preferred examples of the work material to which the lubricating oil composition of the present invention can be applied include stainless steel, alloy steel, carbon steel, aluminum alloy and the like. In the present invention, more preferable effects are obtained for stainless steel and alloy steel. Can be obtained.
• the shape and thickness of the material to be processed are not particularly limited, and can be applied to various shapes and plate thicknesses of the material to be processed. Is effective even in a processed material having a thickness of about 2 to 25 mm.
• the fine blanking processing method of the present invention performs fine blanking using a lubricating oil composition containing 10 to 50% by mass of an active sulfur compound and 2 to 10% by mass of a thiadiazole derivative.
• the lubricating oil composition is as described above.
• the present invention uses the above-described lubricating oil composition and uses a fine blanking die as the processing material, for example, precision shear processing such as punching processing. Conditions can be applied and can be appropriately selected according to the application.
• -Kinematic viscosity measured according to JIS K2283.
• Tool wear The amount of dimension reduction ( ⁇ m) on the side surface of the main punch was measured and used as the amount of wear.
• -Tool chipping (chipping) The area of the chipping portion generated at the bottom of the main punch was measured, and the area ratio (%) to the bottom area was evaluated.
• -Burr height The maximum flash height (mm) of the product after processing 10,000 pieces was measured.
• -Shear surface roughness About the product after processing 10,000 pieces, it evaluated by Ra (micrometer) measured using the roughness meter.
• -Secondary shear plane The presence or absence of secondary shear plane generation after processing was evaluated.
• -Dripping amount About 10,000 products after processing, the products were observed from the side surface, and the distance (mm) from the starting point of the dripping to the shearing portion was measured.
• Example 1 The polysulfide, thiadiazole derivative, oiliness agent, and mineral oil were mixed in the amounts shown in Table 1-1 to obtain a lubricating oil having a kinematic viscosity at 40 ° C. of 89 mm 2 / s. Each processing performance was evaluated by the said method about the obtained lubricating oil. The results are shown in Table 1-1.
• Examples 2 to 9 Lubricating oils having the kinematic viscosities shown in Table 1-1 were obtained in the same manner as in Example 1, except that each lubricating oil composition was as shown in Table 1-1. The results of evaluating the processing performance of the obtained lubricating oils in the same manner as in Example 1 are shown in Table 1-1.
• Comparative Examples 1-5 Lubricating oils having the kinematic viscosities shown in Table 1-2 were obtained in the same manner as in Example 1, except that the lubricating oil composition was changed as shown in Table 1-2. About each obtained lubricating oil, each processing performance was evaluated similarly to Example 1, respectively. The evaluation results are shown in Table 1-2.
• Comparative Example 1 is an example in which FBH-10S manufactured by Nippon Kogyo Co., Ltd., which is a representative chlorine-based fine blanking processing oil, is used as a lubricating oil
• Comparative Example 2 is disclosed in JP-A-2003-253287.
• Comparative example 4 is an example in which the addition amount of the thiadiazole derivative is outside the scope of the present invention
• Comparative Example 5 is an example of the use of polysulfide alone without using the thiadiazole derivative.
• Table 2 shows the results of evaluating machining performance in the same manner as in Example 4 except that the work material was changed as shown in Table 2.
• the present invention shows excellent processing performance almost the same as chlorinated processing oil, regardless of the material to be processed, and enables environmentally friendly production without deteriorating the working environment such as odor. It was. In addition, almost the same performance as chlorinated processing oil can be achieved with low viscosity, and energy saving such as power consumption can be achieved.
• a non-chlorine processing oil suitable for the environment a mold life comparable to that of a chlorinated oil agent can be obtained, and a good product shape can be obtained. It can be suitably used as an oil.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Lubricants (AREA)

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• 2008
  • 2008-03-06 JP JP2008056539A patent/JP5544068B2/ja not_active Expired - Fee Related
• 2009
  • 2009-03-03 WO PCT/JP2009/053937 patent/WO2009110452A1/ja active Application Filing
  • 2009-03-03 CN CN200980107970.9A patent/CN101965393B/zh not_active Expired - Fee Related
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