WO2013018624A1 - 転造加工用潤滑油及び転造加工方法 - Google Patents
転造加工用潤滑油及び転造加工方法 Download PDFInfo
- Publication number
- WO2013018624A1 WO2013018624A1 PCT/JP2012/068871 JP2012068871W WO2013018624A1 WO 2013018624 A1 WO2013018624 A1 WO 2013018624A1 JP 2012068871 W JP2012068871 W JP 2012068871W WO 2013018624 A1 WO2013018624 A1 WO 2013018624A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling
- lubricating oil
- worm
- oil
- processing
- Prior art date
Links
Images
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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
- C10M135/10—Sulfonic acids or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/005—Worms
-
- 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
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
-
- 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
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with 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
- 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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/106—Naphthenic fractions
- C10M2203/1065—Naphthenic fractions used as base material
-
- 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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
-
- 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
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
-
- 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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; 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
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- 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
-
- 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
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
Definitions
- the present invention relates to a rolling process lubricating oil and a rolling process using the lubricating oil.
- Rolling is one type of plastic working in which a die, which is a rolling tool, is pressed against a workpiece, and the workpiece is molded into a target shape using frictional force and tangential force.
- the advantage of this rolling process is that it can be processed while applying compressive residual stress, and since it is a process that does not produce chips like cutting, it can save work material and in the manufacturing process of processed products.
- the lubricating oil used in the rolling process has high machining performance such as controlling the shape of the machined product and improving the surface roughness while reducing tool wear under severe lubrication conditions. It is required to have.
- Patent Document 1 discloses a rolling process oil containing an oily agent such as a monoester, a dicarboxylic acid ester, a thiophosphite ester, or a triazole compound, or an extreme pressure agent.
- an oily agent or an extreme pressure agent is included, and a lubricating oil for metal processing such as a cutting processing oil having high processing performance is used as a lubricating oil for rolling processing.
- Patent Document 2 and Patent Document 3 have a description that the cutting oil can be diverted to the rolling process (for example, Patent Document 2 paragraph [0109], Patent Document 3 paragraph [0158]. ⁇ reference).
- the rolling process is applied to screw machining, gear machining, grooving, burnishing, and the like, and high machining performance is required in any machining.
- worm processing which is considered to be difficult to process, is required to obtain a processed product with particularly high tooth surface hardness, small surface roughness, and high gear accuracy.
- a machining method that improves the gear accuracy of the worm is effective in that the machining amount, that is, the amount of pressing the die at a time, is reduced and at the same time the rotational speed of the die is increased.
- the present invention is a rolling lubricant having excellent processing performance, particularly high processing accuracy, and can suppress the occurrence of peeling at the bottom of the worm tooth surface and improve the appearance of the gear in the worm rolling process.
- An object of the present invention is to provide a lubricating oil for rolling process.
- Another object of the present invention is to provide a rolling method with high processing performance using the rolling lubricant.
- the present inventors surprisingly achieved the above object by using a lubricating oil having a coefficient of friction greater than a certain value as a rolling process lubricant. I found that I can achieve it.
- the present invention has been completed based on such findings.
- a lubricating oil for rolling process containing a mineral oil and / or synthetic oil as a main component and having a friction coefficient of 0.2 or more, 2.
- the lubrication for rolling process according to any one of the above 1 to 3 comprising a friction coefficient improver, 5.
- the lubricating oil for rolling process according to any one of the above 1 to 4 which is used for screw machining, gear machining, groove machining, or burnishing, 6).
- Rolling process method Is to provide.
- the rolling process lubricant having excellent processing performance, particularly high processing accuracy, and in the worm rolling process, the occurrence of peeling at the bottom of the worm tooth surface is suppressed and the appearance of the gear is enhanced.
- a lubricating oil for rolling process it is possible to provide a lubricating oil for rolling process.
- the rolling processing method with the high processing performance using the said lubricating oil for rolling processing can be provided.
- the present invention is a lubricating oil for rolling process which contains mineral oil and / or synthetic oil as a main component and has a friction coefficient of 0.2 or more.
- lubricating oil contains mineral oil and / or synthetic oil as a main component.
- the main component is 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, particularly preferably 80% by mass or more, and 100% by mass based on the total amount of the lubricating oil. That is, it may be a lubricating oil composed of mineral oil and / or synthetic oil.
- the mineral oil examples include, for example, an atmospheric distillation fraction of crude oil, a fraction obtained by distillation under reduced pressure of an atmospheric residue obtained by atmospheric distillation, or hydrodesulfurization, solvent dehydration of these fractions.
- examples thereof include naphthenic mineral oils and paraffinic mineral oils that have been refined by one or more processes such as solvent extraction, hydrocracking, hydrodewaxing, solvent dewaxing, hydrorefining, clay treatment, and sulfuric acid washing.
- a wax isomerized isoparaffinic mineral oil (wax isomerized mineral oil) obtained by isomerizing a mineral oil wax is also preferred.
- examples of synthetic oils include, for example, polybutenes or hydrides thereof, aliphatic synthetic oils such as ⁇ -olefin oligomers (poly ⁇ -olefins) having 8 to 14 carbon atoms such as 1-decene oligomers or hydrides thereof, and alkylbenzenes. And aromatic synthetic oils such as alkylnaphthalene, and naphthenic synthetic oils such as hydrocarbons having a cyclohexane ring.
- these mineral oils and synthetic oils naphthenic mineral oils, paraffinic mineral oils, polybutenes or hydrides thereof, ⁇ -olefin oligomers having 8 to 14 carbon atoms, or hydrides thereof are preferable.
- one kind of mineral oil and synthetic oil can be used alone, or two or more kinds selected from these can be mixed and used. That is, one or more mineral oils may be used, one or two or more synthetic oils may be used, and one or more mineral oils and one or more synthetic oils may be mixed and used. Also good.
- the lubricating oil of the present invention needs to have a friction coefficient of 0.2 or more.
- a friction coefficient of less than 0.2 the processing performance may be deteriorated.
- slippage occurs between the workpiece and the die, peeling occurs at the bottom of the tooth surface of the rolled worm, and the appearance is It may be a defective processed product.
- the upper limit of the friction coefficient of the lubricating oil is not particularly limited, but is preferably about 0.4 from the viewpoint of availability.
- the friction coefficient of the lubricating oil of the present invention is more preferably 0.2 to 0.4, and particularly preferably 0.20 to 0.40.
- the coefficient of friction is a value measured under the condition of an oil temperature of 60 ° C. according to the “Iwata-type pendulum test method” defined in JASO-M314-88.
- the lubricating oil of the present invention preferably has a kinematic viscosity at 40 ° C. of 2 to 15 mm 2 / s. If the kinematic viscosity at 40 ° C. of the lubricating oil is 2 mm 2 / s or more, there is no risk of deterioration of workability due to evaporation loss of the lubricating oil, and if it is 15 mm 2 / s or less, the flow resistance of the lubricating oil is excessive. There is no fear of becoming. For this reason, the kinematic viscosity at 40 ° C. of the lubricating oil is more preferably 3 to 10 mm 2 / s.
- a friction coefficient improver can be blended for the purpose of further increasing the friction coefficient of the lubricating oil.
- Typical examples of the coefficient of friction improver in the present invention include metal detergents and bicyclo [2.2.1] heptane derivatives.
- Suitable examples of the metal detergent include sulfonates, phenates, and salicylates containing alkaline earth metals such as Ca, Mg, and Ba. These may be neutral, basic, or overbased.
- a persulfuric acid method having a base number of 200 mgKOH / g or more, more preferably 300 mgKOH / g or more, particularly 300 to 500 mgKOH / g Casulfonate, Caphenate, Ca salicylate, etc. are preferable. Sulfonate is preferred.
- bicyclo [2.2.1] heptane derivative include compounds having two or more bicyclo [2.2.1] heptane rings.
- bicyclo [2.2.1] heptane rings for example, 2-methyl-3-methyl-2-[(3-methylbicyclo [2.2.1] hept-2-yl) methyl] bicyclo [2.2.1] heptane, 2-methyl-3 A bicyclo [2.2.1] heptane ring, such as 2-methyl-2-[(2-methylbicyclo [2.2.1] hept-3-yl) methyl] bicyclo [2.2.1] heptane; A compound having 15 to 22 carbon atoms in total is preferred.
- one or more friction coefficient improvers selected from the metal detergents or bicyclo [2.2.1] heptane derivatives can be blended.
- the blending amount of the friction coefficient improver is preferably 1 to 30% by mass, more preferably 3 to 20% by mass, and further preferably 5 to 15% by mass based on the total amount of the lubricating oil. preferable. If the blending amount of the friction coefficient improver is 1% by mass or more, a further effect of increasing the friction coefficient is recognized, and even if blending more than 30% by mass, a remarkable increase in effect that is economically reasonable cannot be expected.
- the lubricating oil used in the present invention may be blended with various other additives as long as the coefficient of friction satisfies the above definition.
- additives include oiliness agents, antioxidants, corrosion inhibitors, and antifoaming agents.
- oil-based agent include fatty acid monoesters obtained from aliphatic carboxylic acids having 12 to 24 carbon atoms such as methyl stearate, butyl stearate, octyl stearate and octyl palmitate and aliphatic alcohols having 1 to 24 carbon atoms. Examples include esters.
- the blending amount of the oily agent is preferably in the range of 1 to 20% by mass, more preferably in the range of 3 to 15% by mass based on the total amount of the lubricating oil.
- antioxidants examples include phenolic antioxidants such as 2,6-di-tert-butyl-4-methylphenol and 4,4′-methylenebis (2,6-di-tert-butylphenol). And amine-based antioxidants such as 4,4′-dioctyldiphenylamine, 4,4′-dinonyldiphenylamine, and phenyl- ⁇ -naphthylamine.
- the blending amount of the antioxidant is preferably 0.05 to 3.0% by mass, more preferably 0.2 to 2.0% by mass based on the total amount of the lubricating oil.
- corrosion inhibitor examples include benzotriazole, benzimidazole, benzothiazole, and thiadiazole corrosion inhibitors.
- the blending amount is preferably in the range of 0.05 to 10% by mass, more preferably in the range of 0.1 to 5% by mass, based on the total amount of the lubricating oil.
- the antifoaming agent include dimethylpolysiloxane and fluoroether.
- the blending amount is preferably in the range of 0.00001 to 10% by mass, more preferably in the range of 0.0001 to 5% by mass, based on the total amount of the lubricating oil.
- the rolling processing method of the present invention performs rolling processing using the above-mentioned lubricating oil for rolling processing.
- the rolling method includes screw machining, gear machining, groove machining, burnishing, and the like.
- screw processing include lead screw and ball screw processing
- gear processing includes worm processing
- groove processing includes variable pitch groove processing
- burnishing includes gear burnishing rolling.
- the rolling processing method using the lubricating oil for rolling processing of the present invention is worm rolling processing
- the following conditions (1) and (2) are set for the die indentation speed and the number of rotations of the die. It is preferable to perform processing under the processing conditions that satisfy the requirements.
- Die pushing speed The pushing speed is preferably 0.02 to 8 m / s, more preferably 0.3 to 2 m / s.
- Die rotation speed and peripheral speed It is preferable that the rotation speed of the die is 5 to 550 rpm, or the peripheral speed is 0.04 to 3.14 m / s.
- the speed of pressing the die is low, and as shown in (2), the rotational speed of the die is high or the peripheral speed is high, so that the gear accuracy of the workpiece can be improved. Further, by using the worm rolling process lubricant under such processing conditions, the occurrence of peeling at the bottom of the tooth surface of the worm is suppressed. Therefore, it is possible to perform rolling of a worm that suppresses the occurrence of peeling at the bottom of the tooth surface and has a small surface roughness.
- such a worm rolling method can contribute to resource saving because it has a higher yield of processed materials because it is free of chips compared to a machining method by cutting, and material costs can be reduced. Can be processed at high speed, and the processing time can be shortened. Furthermore, in the cutting process, heat treatment or grinding is often required after the cutting process, but such a worm rolling process method may omit such a process, The worm manufacturing time can also be expected to be greatly reduced.
- Friction coefficient improver I Calcium sulfonate (manufactured by Chemtura Corporation, base number (perchloric acid method) 400 mgKOH / g)
- Friction coefficient improver II Bicyclo [2.2.1] heptane derivative (2-methyl-3-methyl-2-[(3-methylbicyclo [2.2.1] hept-2-yl) Methyl] bicyclo [2.2.1] heptane (made by Idemitsu Kosan Co., Ltd.))
- Oiliness agent Butyl stearate (manufactured by Kao Corporation)
- Extreme pressure agent Dioctyl polysulfonate
- Friction coefficient The friction coefficient was measured at an oil temperature of 60 ° C. using a Kamata pendulum tester (type II) in accordance with the “Kamata pendulum test” defined in JASO-M314-88.
- Kinematic viscosity Measured according to JIS K2283.
- Density The density was measured according to JIS K 2249.
- the lubricating oil for rolling process having excellent machining performance, in particular, high machining accuracy, and in the worm rolling process, it is possible to suppress the occurrence of peeling at the bottom of the worm tooth surface and enhance the appearance of the gear.
- a lubricating oil for rolling process can be provided.
- the rolling processing method with the high processing performance using the said lubricating oil for rolling processing can be provided. Therefore, it can be effectively used as a lubricating oil for rolling processing and a rolling processing method that can efficiently produce worms and the like while saving resources.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
Abstract
Description
ところで、転造加工に用いられる潤滑油には、過酷な潤滑条件下において、工具摩耗を低減しつつ、同時に加工製品の形状を制御し、かつ面粗さを良好にするなど、高い加工性能を有することが求められる。
したがって、従来の転造加工油は、加工性能を高め、転造工具の寿命を伸ばすことを目的として、油性剤や極圧剤を含有し、加工性を高めた潤滑油が用いられてきた。例えば、特許文献1には、モノエステル、ジカルボン酸エステル、チオ亜リン酸エステル、トリアゾール化合物などの油性剤や極圧剤を含有する転造加工油が開示されている。
また、同様の理由から、従来、転造加工用潤滑油としては、油性剤や極圧剤を含有し、加工性能が高い切削加工油など金属加工用潤滑油を転造加工用の潤滑油に転用して使用することが多かった。例えば、特許文献2や特許文献3は、切削油の発明について、その切削油を転造加工にも転用できる旨の記載がある(例えば、特許文献2段落〔0109〕、特許文献3段落〔0158〕参照)。
転造加工の中でも、加工の難度が高いとされるウォームの加工については、特に、歯面の硬度が高く、面粗さが小さい、歯車精度が高い加工品が得られることが要求されている。
このような要求に対し、ウォームの歯車精度を向上させる加工方法として、加工量、すなわち一度にダイスを押し込む量を少なくし、同時にダイスの回転数を多くする加工方法が有効であることが、経験的に知られている。
しかしながら、ウォームの転造加工において、ダイスの回転数を多くすると、ウォームの歯面底部に剥離が発生することが分かった。つまり、加工したウォームの歯面底部に剥離が発生して、外観が不良の加工製品を得る結果となってしまう。しかも、この剥離発生現象は、転造加工油の極圧性などを高めても抑えることができず、その解決策が見出せない状況にあった。
このような状況から、ねじ加工、ギヤ加工、溝加工、バニシング加工などにおいて、さらに、加工性能が良好な転造用潤滑油及び転造加工方法が求められており、特に、加工精度が高く、歯面底部に発生する剥離を抑制できるウォームの転造加工用潤滑油、及びウォームの転造加工方法の提案が切望されていた。
また、本発明は、前記転造加工用潤滑油を用いた加工性能が高い転造加工方法を提供することを目的とするものである。
1.鉱油及び/又は合成油を主成分として含有し、摩擦係数が0.2以上であることを特徴とする転造加工用潤滑油、
2.摩擦係数が0.2~0.4である上記1に記載の転造加工用潤滑油、
3.40℃における動粘度が2~15mm2/sである上記1又2に記載の転造加工用潤滑油、
4.摩擦係数向上剤を配合してなる上記1~3のいずれかに記載の転造加工用潤滑、
5.ねじ加工、ギヤ加工、溝加工、もしくはバニシ加工に用いられる上記1~4のいずれかに記載の転造加工用潤滑油、
6.ウォームの加工に用いられる上記1~5のいずれかに記載の転造加工用潤滑油、
7.上記1~6のいずれかに記載の転造加工用潤滑油を用いる転造加工方法、
8.転造加工が、ウォームの加工である上記7に記載の転造加工方法、
9.ダイスの押し込み速度が0.02~8m/s、ダイスの回転数が5~550rpm、かつダイスの周速が0.04~3.14m/sの条件下で加工する上記8に記載のウォームの転造加工方法、
を提供するものである。
また、本発明によれば、前記転造加工用潤滑油を用いた加工性能が高い転造加工方法を提供することができる。
本発明は、鉱油及び/又は合成油を主成分として含有し、摩擦係数が0.2以上であることを特徴とする転造加工用潤滑油である。
以下、転造加工が、ウォームの転造加工である場合について、本発明の転造加工用潤滑油(以下、「潤滑油」と略称することがある)について説明する。
本発明の潤滑油は、鉱油及び/又は合成油を主成分として含有する。
本発明において主成分とは、潤滑油全量基準で、50質量%以上であり、好ましくは60質量%以上、より好ましくは70質量%以上、特に好ましくは80質量%以上であり、100質量%、つまり鉱油及び/又は合成油からなる潤滑油であってもよい。
これらの鉱油や合成油の中でも、ナフテン系鉱油、パラフィン系鉱油、ポリブテン又はその水素化物、炭素数8~14のα-オレフィンのオリゴマー又はその水素化物が好ましい。
一方、潤滑油の摩擦係数の上限については、特に制限はないが、入手の容易性の観点から、およそ0.4であることが好ましい。したがって、本発明の潤滑油の摩擦係数は、0.2~0.4であることがより好ましく、特に、0.20~0.40であることが好ましい。
なお、上記摩擦係数は、JASO-M314-88に規定される「曾田式振子試験法」で、油温60℃の条件で測定した値である。
前記金属系清浄剤としては、Ca、Mg、Ba等のアルカリ土類金属を含有するスルフォネート、フェネート、及びサリチレートが好適なものとして挙げられる。これらは、中性、塩基性、過塩基性のいずれであってもよい。中でも、過塩基性、例えば、過塩素酸法による塩基価が200mgKOH/g以上、より好ましくは300mgKOH/g以上、特に300~500mgKOH/gのCaスルフォネート、Caフェネート、Caサリチレートなどが好ましく、特にCaスルフォネートが好ましい。
前記油性剤としては、例えば、ステアリン酸メチル、ステアリン酸ブチル、ステアリン酸オクチル、パルミチン酸オクチルなどの炭素数12~24の脂肪族カルボン酸と炭素数1~24の脂肪族アルコールから得られる脂肪酸モノエステルがあげられる。その油性剤の配合量は、潤滑油全量基準で1~20質量%の範囲であることが好ましく、3~15質量%範囲であることがより好ましい。
前記腐食防止剤としては、例えば、ベンゾトリアゾール系、ベンズイミダゾール系、ベンゾチアゾール系、チアジアゾール系腐食防止剤が挙げられる。その配合量は、潤滑油全量を基準として0.05~10質量%の範囲であることが好ましく、好ましくは0.1~5質量%の範囲であることがより好ましい。
また、前記消泡剤としては、例えばジメチルポリシロキサン、フルオロエーテルなどが挙げられる。その配合量は、潤滑油全量を基準として0.00001~10質量%の範囲が好ましく、0.0001~5質量%の範囲であることがより好ましい。
本発明の転造加工方法は、上記転造加工用潤滑油を用いて、転造加工を行うものである。
転造加工方法には、ねじ加工、ギヤ加工、溝加工、及びバニシング加工などが含まれる。ねじ加工としてはリードスクリューやボールねじの加工、ギヤ加工としてはウォームの加工、溝加工としては変動ピッチ溝加工、バニシング加工としては歯車類のバニシング転造加工などが挙げられる。
(1)ダイスの押し込み速度
押し込み速度は、0.02~8m/sであることが好ましく、0.3~2m/sであることがより好ましい。
(2)ダイスの回転数と周速
ダイスの回転数が、5~550rpm、又は周速が0.04~3.14m/sでありことが好ましい。
上記(1)のように、ダイスの押し込み速度が小さく、かつ(2)のようにダイスの回転数が高い、又は周速が速いことにより、加工品の歯車精度を高めることができる。また、そのような加工条件下で、上記ウォームの転造加工用潤滑油を用いることによって、ウォームの歯面底部における剥離の発生が抑制される。したがって、歯面底部における剥離の発生を抑制し、面粗さが小さいウォームの転造加工が可能である。
さらに、切削加工では、切削加工後に熱処理加工や、研削加工を要することが多いのに対し、このようなウォームの転造加工方法は、そのような工程を省略することができる可能性もあり、ウォームの製造時間を大幅に短縮することも期待できる。
実施例1~7及び比較例1
第3表に示す構成成分を第3表に示す割合で配合して、各転造加工用潤滑油を準備した。次いで、下記に示す方法でその性状・物性を測定し性能を評価した。結果を第1表に示す。
なお、第1表の構成成分は、以下のものを用いた。
(1)ナフテン系鉱油:第2表に示す性状を有するナフテン系鉱油
(2)パラフィン系鉱油:第2表に示す性状を有するパラフィン系鉱油
(3)イソパラフィン系合成油:第2表に示す性状を有する合成油、商品名「IPソルベント1620」、出光興産株式会社製)
(4)摩擦係数向上剤I:カルシウムスルホネート(Chemtura Corporation製、塩基価(過塩素酸法)400mgKOH/g)
(5)摩擦係数向上剤II:ビシクロ[2.2.1]ヘプタン誘導体(2-メチル-3-メチル-2-[(3-メチルビシクロ[2.2.1]へプト-2-イル)メチル]ビシクロ[2.2.1]ヘプタン(出光興産株式会社製))
(6)油性剤:ブチルステアレート(花王株式会社製)
(7)極圧剤:ジオクチルポリスルフィド(DIC株式会社製)
(1)摩擦係数
JASO-M314-88に規定される「曾田式振り子試験」に準拠し、曾田式振り子試験機(II型)を用いて、油温60℃で測定した。
(2)動粘度
JIS K2283に準拠して測定した。
(3)密度
JIS K 2249に準拠して測定した。
(4)ウォームギヤの転造加工試験
(i)試験装置及び試験条件
転造加工機 :株式会社ニッセー製 GA-330A
ダイス :図1に示す形状を有し、第1表に示す仕様の丸ダイス
被加工材料 :図2に示す形状で、材質がS45Cである被加工材料
加工部品形状 :ウォーム
押込み速度 :0.14m/s
ダイス回転数 :15rpm
潤滑油供給方法:自動(装置付属の給油機にて噴射)
(ii)評価方法
転造加工したウォームについて、歯面底部に発生した剥離の重量を測定し、さらにウォームの外観(剥離面積の割合)を評価した。
(剥離の重量測定方法)
エー・アンド・ディ製電子天秤HM-202を用いて、試験前後の被加工材料の重量を測定し、その重量差を剥離量とした。
(ウォームの外観評価方法)
剥離面積の割合を測定し、下記の評価基準に基づいて、結果を対応する○~×で表示した。
外観評価基準
○: 剥離面積が5%以下
△: 剥離面積が5%超20%未満
×: 剥離面積が20%以上
Claims (9)
- 鉱油及び/又は合成油を主成分として含有し、摩擦係数が0.2以上であることを特徴とする転造加工用潤滑油。
- 摩擦係数が0.2~0.4である請求項1に記載の転造加工用潤滑油。
- 40℃における動粘度が2~15mm2/sである請求項1又2に記載の転造加工用潤滑油。
- 摩擦係数向上剤を配合してなる請求項1~3のいずれかに記載の転造加工用潤滑油。
- ねじ加工、ギヤ加工、溝加工、もしくはバニシ加工に用いられる請求項1~4のいずれかに記載の転造加工用潤滑油。
- ウォームの加工に用いられる請求項1~5のいずれかに記載の転造加工用潤滑油。
- 請求項1~6のいずれかに記載の転造加工用潤滑油を用いる転造加工方法。
- 転造加工が、ウォームの加工である請求項7に記載の転造加工方法。
- ダイスの押し込み速度が0.02~8m/s、ダイスの回転数が5~550rpm、かつダイスの周速が0.04~3.14m/sの条件下で加工する請求項8に記載のウォームの転造加工方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280038205.8A CN103917633A (zh) | 2011-07-29 | 2012-07-25 | 滚轧加工用润滑油以及滚轧加工方法 |
SG2014006977A SG2014006977A (en) | 2011-07-29 | 2012-07-25 | Lubricating oil for rolling and rolling method |
KR1020147003379A KR20140058554A (ko) | 2011-07-29 | 2012-07-25 | 전조 가공용 윤활유 및 전조 가공 방법 |
US14/235,352 US20140144197A1 (en) | 2011-07-29 | 2012-07-25 | Lubricating oil for rolling and rolling method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011167468A JP5830296B2 (ja) | 2011-07-29 | 2011-07-29 | 転造加工用潤滑油及び転造加工方法 |
JP2011-167468 | 2011-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013018624A1 true WO2013018624A1 (ja) | 2013-02-07 |
Family
ID=47629150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/068871 WO2013018624A1 (ja) | 2011-07-29 | 2012-07-25 | 転造加工用潤滑油及び転造加工方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20140144197A1 (ja) |
JP (1) | JP5830296B2 (ja) |
KR (1) | KR20140058554A (ja) |
CN (1) | CN103917633A (ja) |
SG (1) | SG2014006977A (ja) |
WO (1) | WO2013018624A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI128090B (en) * | 2016-12-22 | 2019-09-13 | Neste Oyj | Hydraulic fluid composition |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11349975A (ja) * | 1998-06-03 | 1999-12-21 | Idemitsu Kosan Co Ltd | 銅および銅合金用金属加工油組成物 |
JP2001247492A (ja) * | 1999-12-27 | 2001-09-11 | Idemitsu Kosan Co Ltd | ビシクロ[2.2.1]ヘプタン誘導体及びその製造方法並びにトラクションドライブ用流体 |
JP2001348586A (ja) * | 2000-06-05 | 2001-12-18 | Idemitsu Kosan Co Ltd | 塑性加工用潤滑油組成物 |
JP2009144095A (ja) * | 2007-12-17 | 2009-07-02 | Toyota Boshoku Corp | 転造ネジ加工用の潤滑油とこれを用いた転造ネジ加工方法 |
WO2009119669A1 (ja) * | 2008-03-28 | 2009-10-01 | 出光興産株式会社 | 丸ダイス転造加工用潤滑油組成物 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5742797A (en) * | 1980-08-26 | 1982-03-10 | Masaaki Takahashi | Lubricant for screw roll threading |
US5068049A (en) * | 1987-12-29 | 1991-11-26 | Exxon Research & Engineering Company | Method of cold rolling a metal |
JP3433402B2 (ja) * | 1995-08-03 | 2003-08-04 | 出光興産株式会社 | 含浸軸受用油組成物 |
JP3928981B2 (ja) * | 1995-09-14 | 2007-06-13 | 昭和シェル石油株式会社 | 潤滑油組成物 |
JPH09263782A (ja) * | 1996-03-28 | 1997-10-07 | Idemitsu Kosan Co Ltd | 無段変速機油組成物 |
JP2000073083A (ja) * | 1998-09-02 | 2000-03-07 | Yushiro Chem Ind Co Ltd | 金属塑性加工用潤滑油 |
JP4560174B2 (ja) * | 2000-06-05 | 2010-10-13 | 出光興産株式会社 | 塑性加工用潤滑油組成物 |
JP4007813B2 (ja) * | 2002-01-21 | 2007-11-14 | 三和油化工業株式会社 | 金属加工用潤滑剤組成物 |
JP2005187650A (ja) * | 2003-12-25 | 2005-07-14 | Nippon Oil Corp | 金属加工用油剤 |
JP5462993B2 (ja) * | 2004-02-23 | 2014-04-02 | Jx日鉱日石エネルギー株式会社 | 金属加工油組成物 |
JP4599078B2 (ja) * | 2004-03-31 | 2010-12-15 | Jx日鉱日石エネルギー株式会社 | 金属加工油組成物 |
JP4804167B2 (ja) * | 2006-02-20 | 2011-11-02 | トヨタ自動車株式会社 | 転造工具及びねじ又はウォームと少数歯スプラインとの同時転造方法 |
JP4995481B2 (ja) * | 2006-04-28 | 2012-08-08 | 住友軽金属工業株式会社 | 銅管加工用潤滑油及びそれを用いた銅管の製造方法 |
JP4995483B2 (ja) * | 2006-05-11 | 2012-08-08 | 住友軽金属工業株式会社 | 銅管加工用潤滑油及びそれを用いた銅管の製造方法 |
JP5085948B2 (ja) * | 2007-01-23 | 2012-11-28 | 住友軽金属工業株式会社 | 銅管加工用潤滑油及びそれを用いた銅管の製造方法 |
JP5277421B2 (ja) * | 2007-05-07 | 2013-08-28 | 大同化学工業株式会社 | 熱間圧延油組成物 |
JPWO2009004893A1 (ja) * | 2007-06-29 | 2010-08-26 | 出光興産株式会社 | 潤滑油添加剤および潤滑油組成物 |
JP5393963B2 (ja) * | 2007-08-28 | 2014-01-22 | トヨタ紡織株式会社 | 転造ネジ加工方法 |
JP2009235341A (ja) * | 2008-03-28 | 2009-10-15 | Hiroshima Univ | 摺動面に磁着可能な固体潤滑剤および該固体潤滑剤を含む潤滑油組成物 |
CA2711626C (en) * | 2009-07-31 | 2017-11-28 | Chevron Japan Ltd. | Friction modifier and transmission oil |
CN102127485B (zh) * | 2010-01-12 | 2014-12-31 | Nok克鲁勃株式会社 | 润滑油组合物 |
-
2011
- 2011-07-29 JP JP2011167468A patent/JP5830296B2/ja active Active
-
2012
- 2012-07-25 WO PCT/JP2012/068871 patent/WO2013018624A1/ja active Application Filing
- 2012-07-25 SG SG2014006977A patent/SG2014006977A/en unknown
- 2012-07-25 CN CN201280038205.8A patent/CN103917633A/zh active Pending
- 2012-07-25 US US14/235,352 patent/US20140144197A1/en not_active Abandoned
- 2012-07-25 KR KR1020147003379A patent/KR20140058554A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11349975A (ja) * | 1998-06-03 | 1999-12-21 | Idemitsu Kosan Co Ltd | 銅および銅合金用金属加工油組成物 |
JP2001247492A (ja) * | 1999-12-27 | 2001-09-11 | Idemitsu Kosan Co Ltd | ビシクロ[2.2.1]ヘプタン誘導体及びその製造方法並びにトラクションドライブ用流体 |
JP2001348586A (ja) * | 2000-06-05 | 2001-12-18 | Idemitsu Kosan Co Ltd | 塑性加工用潤滑油組成物 |
JP2009144095A (ja) * | 2007-12-17 | 2009-07-02 | Toyota Boshoku Corp | 転造ネジ加工用の潤滑油とこれを用いた転造ネジ加工方法 |
WO2009119669A1 (ja) * | 2008-03-28 | 2009-10-01 | 出光興産株式会社 | 丸ダイス転造加工用潤滑油組成物 |
Also Published As
Publication number | Publication date |
---|---|
JP2013028769A (ja) | 2013-02-07 |
SG2014006977A (en) | 2014-06-27 |
CN103917633A (zh) | 2014-07-09 |
JP5830296B2 (ja) | 2015-12-09 |
KR20140058554A (ko) | 2014-05-14 |
US20140144197A1 (en) | 2014-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Syahrullail et al. | Experimental evaluation of palm oil as lubricant in cold forward extrusion process | |
Abdalla et al. | Development of novel sustainable neat-oil metal working fluids for stainless steel and titanium alloy machining. Part 1. Formulation development | |
JP5570683B2 (ja) | 金属材料プレス加工用の潤滑油とそれを用いた金属材料のプレス加工方法 | |
JP5329067B2 (ja) | 自動変速機油及びその製造方法 | |
JP5224251B2 (ja) | 金属材料の水性塑性加工用潤滑剤組成物 | |
EP0744455B1 (en) | Animal and vegetable lubricating oil composition | |
CN101240209A (zh) | 多功能金属切削油组合物 | |
CN103981004A (zh) | 极压复合铝基润滑脂组合物及制备方法 | |
CN109439419B (zh) | 一种超高润滑性能切削油及其制备方法 | |
Puttaswamy et al. | Experimental investigation on the performance of vegetable oil based cutting fluids in drilling AISI 304L using Taguchi technique | |
JP2021512185A (ja) | 潤滑剤組成物 | |
JP5420167B2 (ja) | 転造ネジ加工用の潤滑油とこれを用いた転造ネジ加工方法 | |
JP5231053B2 (ja) | 潤滑油組成物 | |
JP5830296B2 (ja) | 転造加工用潤滑油及び転造加工方法 | |
Suda et al. | Multifunctional application of a synthetic ester to machine tool lubrication based on MQL machining lubricants | |
JP5280713B2 (ja) | 金属加工油組成物 | |
JP7455376B2 (ja) | グリース組成物 | |
JP4436312B2 (ja) | 金属材料のプレス加工方法 | |
JP2005290187A (ja) | 塑性加工用潤滑剤組成物 | |
JP5060774B2 (ja) | 亜鉛メッキ鋼板用金属加工油組成物 | |
CN103710109A (zh) | 一种拉拔钢棒的润滑剂 | |
CN106433926A (zh) | 一种白合金冷拉拔加工润滑剂的组合物 | |
JP6957145B2 (ja) | 金属加工油組成物 | |
JP5393963B2 (ja) | 転造ネジ加工方法 | |
Kržan et al. | The lubrication of DLC coated gears with environmentally adapted ester-based oil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12820697 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14235352 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20147003379 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12820697 Country of ref document: EP Kind code of ref document: A1 |