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WO2007145380A2 - Lubrifiants destinés à une utilisation pour le traitement d'un matériau métallique et procédés de traitement du matériau métallique utilisant les lubrifiants - Google Patents

Lubrifiants destinés à une utilisation pour le traitement d'un matériau métallique et procédés de traitement du matériau métallique utilisant les lubrifiants Download PDF

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Publication number
WO2007145380A2
WO2007145380A2 PCT/JP2007/062559 JP2007062559W WO2007145380A2 WO 2007145380 A2 WO2007145380 A2 WO 2007145380A2 JP 2007062559 W JP2007062559 W JP 2007062559W WO 2007145380 A2 WO2007145380 A2 WO 2007145380A2
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WO
WIPO (PCT)
Prior art keywords
lubricant
metallic material
lubricants
processing
additive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2007/062559
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English (en)
Inventor
Mami Kato
Teruo Fukaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Boshoku Corp
Original Assignee
Toyota Boshoku Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Boshoku Corp filed Critical Toyota Boshoku Corp
Priority to US12/302,307 priority Critical patent/US20090239774A1/en
Priority to CN2007800222433A priority patent/CN102015982A/zh
Publication of WO2007145380A2 publication Critical patent/WO2007145380A2/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
    • 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—Overbased sulfonic 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
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • 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
    • C10N2040/24—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 lubricants for use in processing (e.g., press working) of a metallic material (which is also referred to as metal processing). Further, the present invention relates to methods for processing the metallic material using the lubricants. [0002] Background Art
  • Examples of known metal processing technique for manufacturing a product may include press working (e.g., press forming, shearing (blanking, die cutting, half die cutting and punching)), bending, burring, drawing and rolling, each of which can be performed by means of a processing tool (e.g., a mold).
  • a processing tool e.g., a mold
  • a metallic material a processed material
  • a mold i.e., a punch and die assembly
  • fine shearing for example, in fine blanking (FB)
  • the formed article is more finely finished than the formed article produced by normal shearing.
  • the formed article produced by FB can be used as an end product without additional processing. This may lead to a reduced number of manufacturing processes of the product.
  • fine shearing as typified by FB has been broadly used in a metal processing field for manufacturing car parts or other such parts.
  • lubricants are generally applied between the metallic material and the processing tool, e.g., the mold (the punch and die assembly), in order to reduce frictional heat generated therebetween or to prevent formation of "burr" or "shear drop" on a processed surface (e.g., a shear surface) of the metallic material.
  • the lubricants thus applied may effectively prevent the processing tool (the mold) from wearing by the factional heat.
  • the lubricants may effectively increase processing accuracy of the metallic material.
  • shearing may generate a large shear stress between the metallic material and the mold (the punch and die assembly).
  • fine shearing may generate a shear stress greater than the normal shearing. Therefore, the lubricants for use in shearing and fine shearing require excellent lubricity and seize resistance.
  • chlorine lubricants have been broadly used.
  • the chlorine lubricants can provide good lubricity and seize resistance.
  • chlorine ingredients contained in the chlorine lubricants can be easily decomposed to produce undesirable decomposition products during processing or with time.
  • the decomposition products thus produced may rust the metallic material and the processing tool (the mold).
  • the chlorine ingredients may produce harmful or toxic substances when they are incinerated.
  • the chlorine ingredients may corrode or damage incinerators.
  • improved or nonchlorine lubricants that can provide substantially the same lubricity and seize resistance as the chlorine lubricants.
  • Japanese Laid-open Patent Publication Number 2002-155293 teaches a nonchlorine lubricative composition for use in metal processing, which composition includes a lubricant base (mineral oils or synthetic oils) and an additive (a sulfuric extreme pressure agent, organozinc compounds and imide compounds) added to the lubricant base.
  • Japanese Patent Number 2,641,203 teaches a nonchlorine lubricative composition for use in metal processing, which composition includes a lubricant base (mineral oils or other such oils) and an additive (a sulfuric extreme pressure agent and highly-basic metal sulfonates) added to the lubricant base.
  • Japanese Laid-open Patent Publication Number 8-20790 teaches a nonchlorine lubricative composition for use in metal processing, which composition includes a lubricant base (mineral oils or synthetic oils) and an additive (a sulfuric extreme pressure agent (e.g., olefin polysulfides), highly-basic metal sulfonates and organozinc compounds) added to the lubricant base.
  • a sulfuric extreme pressure agent e.g., olefin polysulfides
  • highly-basic metal sulfonates and organozinc compounds organozinc compounds
  • the known nonchlorine lubricative compositions generally contain mineral oils as the lubricant base. Therefore, such lubricative compositions may produce a bad smell caused by the mineral oils during processing. This may lead to deterioration of working condition.
  • the mineral oils generally have high kinetic viscosity. The high kinetic viscosity of the mineral oils may lead to clogging of filters of a metal processing machine. Also, due to the high kinetic viscosity of the mineral oils, the lubricative compositions may have reduced self-removability. Therefore, the lubricative compositions cannot be easily removed or washed out from a formed article. Further, the lubricative composition taught by Publication Number '293 does not have sufficient lubricity and seize resistance.
  • a lubricative composition is not suitable for press working, in particular, fine shearing.
  • the mold the punch and die assembly
  • shearing speed cannot be increased. This may lead to reduced productivity.
  • the lubricative compositions taught by Patent Number '203 and Publication Number '790 do not have sufficient lubricity and seize resistance. Therefore, these lubricative compositions are also not suitable for press working such as fine shearing.
  • a nonchlorine lubricant for use in processing of a metallic material.
  • the lubricant includes a lubricant base.
  • the lubricant base includes at least one member selected from the group consisting of the vegetable oils and the neopentylated polyol esters.
  • the lubricant does not produce a bad smell because the lubricant does not contain mineral oils. Therefore, the lubricant does not deteriorate working condition. Furthermore, the lubricant may be friendly for the environment. In addition, the lubricant is less subject to solidifying because the lubricant does not contain animal oils.
  • the lubricant may further include an additive added to the lubricant base.
  • the additive may include a sulfuric extreme pressure agent, an organozinc compound and a calcium ingredient.
  • the additive is added to the lubricant base such that sulfur content, zinc content and calcium content in the lubricant are respectively 5.0-50 wt%, 0.2- 10 wt% and 0.01-10 wt% of total weight of the lubricant.
  • the lubricant thus formulated may have substantially the same lubricity and seize resistance as the conventional chlorine lubricants.
  • a method for processing a metallic material using a processing tool.
  • the method includes the steps of feeding the nonchlorine lubricant that is described above between the metallic material and the processing tool.
  • frictional heat generated between the metallic material and the processing tool can be effectively reduced, so that the processing tool can be prevented from wearing.
  • the processing tool may have a long service life.
  • formation of "burr” or "shear drop" on a processed surface (e.g., a shear surface) of the metallic material can be prevented.
  • a lubricant for use in processing of a metallic material may include vegetable oils and/or neopentylated polyol esters as a lubricant base.
  • the lubricant may include a (nonchlorine) additive added to the lubricant base.
  • the additive may be a sulfuric extreme pressure agent (Ingredient A), an organozinc compound (Ingredient B) and a calcium ingredient (Ingredient C).
  • the lubricant may have substantially the same lubricity and seize resistance as known chlorine lubricants by appropriately controlling or determining the sulfur content, the zinc content and the calcium content contained therein. As will be recognized, the lubricant contains neither mineral oils nor chlorine ingredients.
  • the lubricant does not deteriorate working condition. Also, the lubricant does not produce harmful or toxic substances if it is incinerated.
  • the vegetable oils contained in the lubricant are less subject to solidification than the other oils (e.g., animal oils). As a result, the lubricant may have increased self-removability. Further, according to the lubricant, filters of a metal processing machine may preferably be prevented from clogging.
  • the lubricant base of the lubricant will be described.
  • the lubricant base may be at least one member selected from the group consisting of the vegetable oils and neopentylated polyol esters.
  • the vegetable oils and the neopentylated polyol esters can be used in either a pure form or in a combined form.
  • the vegetable oils and the neopentylated polyol esters when used in the combined form, they can be mixed in various combinations, i.e., combinations of one or more vegetable oils and one or more neopentylated polyol esters, combinations of two or more vegetable oils only, or combinations of two or more neopentylated polyol esters only.
  • the vegetable oils and the neopentylated polyol esters may preferably include all vegetable oils and neopentylated polyol esters that are known per se for use in a composition for processing a metallic material.
  • the vegetable oils and the neopentylated polyol esters are not limited to special vegetable oils and special neopentylated polyol esters.
  • the vegetable oils and the neopentylated polyol esters may have kinetic viscosity of 1 mm 2 /s to 1000 mm 2 /s at 40"C, more preferably 5 mm 2 /s to 100 mm 2 /s at 4O'C.
  • the vegetable oils are linseed oil, safflower oil, soy been oil, sesame oil, corn oil, canola oil, cotton seed oil, olive oil, rice bran oil, coconut oil, palm oil, palm kernel oil and hydrogenated products thereof.
  • the vegetable oils mainly contain fatty acids (more preferably linear fatty acids) having a carbon number of 8-22. Further, in view of the fact that the vegetable oils are usually used for foods, the vegetable oils do not generally produce a bad smell.
  • neopentylated polyol esters examples include neopentylglycol, trimethylolpropane, pentaerythritol and dipentaerythritol. These exemplified compounds may have excellent heat resistance and lubricity, high ignition points and low volatility. However, trimethylolpropane and pentaerythritol are more preferable in view of heat resistance, volatility and lubricity. Generally, it is preferable that the neopentylated polyol esters contain alkyl groups having a carbon number of 7-22. [0019]
  • content of the vegetable oils and/or the neopentylated polyol esters in the lubricant is 40-80 wt% (not less than 40 wt% and not greater than 80 wt%) of total weight of the lubricant, preferably 50-70 wt%, and more preferably 55-65 wt%.
  • the lubricant may have sufficient lubricating performance and have substantial effects of the additive. In the content of 55-65 wt%, the lubricating performance and the effects of the additive are maximized.
  • the lubricant may have insufficient lubricating performance. On the contrary, even if the content of the vegetable oils and/or the neopentylated polyol esters in the formulated lubricant is greater than 80 wt% of total weight of the lubricant, the lubricant may only have limited performance and effects.
  • the sulfuric extreme pressure agent may preferably include various types of sulfuric compounds that can provide extreme pressure property.
  • the sulfuric extreme pressure agent is not limited to special sulfuric compounds.
  • the sulfuric extreme pressure agent are sulfurized fats, sulfurized fatty acids, sulfuric esters, sulfurized olefins, polysulfides, thiocarbamates and sulfurized mineral oils.
  • the exemplified compounds for the sulfuric extreme pressure agent can be used in either a pure form or in a combined form.
  • the sulfurized fats may preferably be made by reacting sulfur with various types of fats (e.g., lard oils, whale oils, vegetable oils and fish oils).
  • the sulfurized fats may include a sulfurized lard, a sulfurized canola oil, a sulfurized caster oil and a sulfurized soy been oil.
  • the sulfurized fatty acids may include a sulfide of oleic acid.
  • the sulfuric esters may include a sulfide of methyl oleate and a sulfide of octyl rice bran fatty acid.
  • the sulfurized olefins may preferably be produced by reacting C 2 -C 1S olefins or their multimers (e.g., dimers, trimers or tetramers) with a sulfurizing agent such as sulfur and sulfur chloride.
  • polysulfides examples include dibenzylpolysulfides, di-tert-nonylpolysulfides, didodecylpolysulfides, di-tert-butylpolysulfides, dioctylpolysulfides, diphenylpolysulfides and dicyclohexylpolysulf ⁇ des.
  • thiocarbamates examples include zinc thiocarbamates, dilaurylthiodipropionates and distearylthiodipropionates.
  • the sulfurized mineral oils may preferably be produced by dissolving elementary sulfur into mineral oils.
  • the mineral oils for use in preparation of the sulfurized mineral oils may be, for example, but are not limited to, many kinds of oils that can be produced in a general petroleum refinery process.
  • the organozinc compound may include zinc dialkyldithiophosphate (which will be referred to ZnDTP hereinafter) and zinc dialkyldithiocarbamic acid (which will be referred to ZnDTC hereinafter).
  • Alkyl groups contained in ZnDTP and ZnDTC may be identical with or different from each other. That is, in ZnDTP, two alkyl groups bonding to a phosphorus atom via an oxygen atom may be identical with or different from each other. Similarly, in ZnDTC, two alkyl groups bonding to a nitrogen atom may be identical with or different from each other.
  • the alkyl groups contained in ZnDTP and ZnDTC may preferably be alkyl groups having a carbon number of three or more. Further, these alkyl groups can be replaced by aryl groups.
  • the above-described compounds for the organozinc compound can be used in either a pure form or in a combined form.
  • the calcium ingredient may include, but are not limited to, calcium sulfonates, calcium salicylates and calcium phenates.
  • the calcium sulfonates are preferred in terms of kinetic viscosity and price. More preferred are basic calcium sulfonates. Further more preferred are highly-basic calcium sulfonates having base value of 300 mgKOH/g or more.
  • the above-described compounds for the calcium ingredient can be used in either a pure form or in a combined form.
  • the lubricant of the present invention may preferably be formulated by adding the additive (Ingredient A, Ingredient B and Ingredient C) to the lubricant base (i.e., the vegetable oils and/or the neopentylated polyol esters).
  • the lubricant may be formulated such that sulfur content in the formulated lubricant is preferably 5.0-50 wt% (not less than 5.0 wt% and not greater than 50 wt%) of total weight of the lubricant, more preferably 6.0-30 wt%.
  • the lubricant may have insufficient seize resistance and lubricity. On the contrary, if the sulfur content in the formulated lubricant is greater than 50 wt% of total weight of the lubricant, the lubricant may only have limited performance and effects.
  • the lubricant may be formulated such that zinc content in the lubricant is preferably 0.2-10 wt% (not less than 0.2 wt% and not greater than 10 wt%) of total weight of the lubricant, more preferably 0.3-5.0 wt%. If the zinc content in the formulated lubricant is less than 0.2 wt% of total weight of the lubricant, the lubricant may have insufficient seize resistance and lubricity. Conversely, even if the zinc content in the formulated lubricant is greater than 10 wt% of total weight of the lubricant, the lubricant may only have limited effects. [0031]
  • the lubricant may be formulated such that calcium content in the lubricant is preferably 0.01-10 wt% (not less than 0.01 wt% and not greater than 10 wt%) of total weight of the lubricant, more preferably 0.5-5.0 wt%. If the calcium content in the formulated lubricant is less than 0.01 wt% of total weight of the lubricant, the lubricant may have insufficient seize resistance and lubricity. On the contrary, if the calcium content in the formulated lubricant is greater than 10 wt% of total weight of the lubricant, the lubricant may only have limited effects. [0032]
  • the additive for use in the preparation of the lubricant essentially consists of the sulfuric extreme pressure agent (Ingredient A), the organozinc compound (Ingredient B) and the calcium ingredient (Ingredient C).
  • various types of known additional agents can be added to the lubricant without obscuring the object of the invention in order to increase or stabilize basic properties of the lubricant, if necessary.
  • the known additional agents may include a viscosity modifying agent, a rust inhibitive agent, an antioxidizing agent, a corrosion prevention agent, a coloring agent, an antifoaming agent and a fragrant material.
  • the viscosity modifying agent may preferably include all viscosity modifying agents that are known per se for use in a composition for processing a metallic material.
  • the viscosity modifying agent is not limited to special viscosity modifying agents.
  • the viscosity modifying agent may preferably be added so that the lubricant may have kinetic viscosity of 1 mm 2 /s to 1000 mm 2 /s at 40 1 C, more preferably 5 mm 2 /s to 100 mm 2 /s at 40 1 C.
  • the rust inhibitive agent is not limited to special compounds.
  • the rust inhibitive agent are calcium-based rust inhibitive agent, barium-based rust inhibitive agent and wax-based rust inhibitive agent.
  • the antioxidizing agent are amine series compounds and phenolic compounds.
  • the corrosion prevention agent are benzotriazols, tolyltriazols and mercaptobenzothiazoles.
  • the coloring agent may be various types of dyes and pigments.
  • the lubricant of the present invention may have beneficial effects in various processing of the metallic material such as press working (e.g., press forming, shearing (blanking, die cutting, half die cutting and punching)), bending, burring, drawing and rolling, each of which can be performed by means of a special processing tool.
  • the lubricant may have beneficial effects in shearing (in particular, fine shearing as typified by fine blanking (FB)).
  • FB fine blanking
  • the lubricant of the present invention does not contain chlorine components. Therefore, the lubricant may have rust inhibiting performance greater than the conventional lubricants. That is, the lubricant may effectively prevent a processing tool (or a mold) and the processed metallic material from rusting. In addition, the lubricant may effectively increase processing accuracy of the metallic material when it is fed between the metallic material and the processing tool (the mold). Moreover, the lubricant can be use for processing various types of metallic materials, e.g., stainless steel, alloy steels, carbon steels and aluminum alloys. However, the lubricant may provide particularly beneficial effects when applied to the alloy steels and the carbon steels. [0037]
  • the lubricant is formulated by adding the additive (i.e., Ingredient A, Ingredient B and Ingredient C) to the lubricant base. Subsequently, the formulated lubricant is applied between the metallic material and the processing tool (the mold) in order to lubricate therebetween when the metallic material is processed.
  • the metallic material can be smoothly processed (e.g., sheared) with a high degree of processing accuracy.
  • the lubricant may be applied to the metallic material by means of, for example, but are not limited to, a roller and a sprayer.
  • the lubricant thus applied may effectively increase processing accuracy of the metallic material.
  • the lubricant that is applied between the metallic material and the processing tool (the mold) may effectively protect the processing tool from rusting and damaging, thereby providing a prolonged working life of the processing tool.
  • the content of each ingredient was expressed as a weight part.
  • the sulfur content (%) was expressed as a weight percent of sulfur atom to the total weight of each lubricant.
  • the zinc content (%) was expressed as a weight percent of zinc atom to the total weight of each lubricant.
  • the calcium content (%) was expressed as a weight percent of calcium atom to the total weight of each lubricant.
  • Examples 1-7 nonchlorine lubricants
  • Control 1 chlorine lubricant
  • Table 1 Compositions of the seven types of example lubricants (Examples 1-7) and the control lubricant (Control 1) are shown in Table 1.
  • the lubricant base (which will be referred to as "LB)
  • the lubricants of Examples 1-7 and Control 1 were uniformly fed to the surfaces of the work pieces by a resin roll coater.
  • the punches 1 and 2 were visually observed for the surface appearance thereof, so as to determine occurrence of defects, including wear, seizing, damage and stripping of TiN coating. From the appearance, the punches 1 and 2 were evaluated based on the following reference levels:
  • the formed articles thus formed were visually observed for the sheared surface appearance of the punched holes (i.e., processing accuracy of the formed articles), so as to determine occurrence of defects, including burr and shear drop. From the observed appearance, the sheared surface appearance of the punched holes were evaluated based on the following reference levels:
  • the punches 1 and 2 may have superior surface appearance. This means that the lubricants of Examples 1-7 and Control 1 may prevent the punches 1 and 2 from wearing during processing. Also, with regard to Examples 1-7 and Control 1, the punched holes of the formed articles may have superior sheared surface appearance. This means that the lubricants of Examples 1-7 and Control 1 may form the punched holes free from burr and shear drop. These results demonstrate that the lubricants of Examples 1-7 may have excellent seize resistance and lubricity that are same as or similar to the (chlorine) lubricant of Control 1.
  • the lubricants of Examples 1, 2, 5 and 7 may have greater performance than the chlorine lubricant of Control 1 in that, according to these lubricant, the work pieces can be processed (punched) under a lesser pressing load (92-93 ton).
  • the vegetable oils (Examples 1-3) may have substantially the same performance as the neopentylated polyol (Examples 4-7).
  • the neopentylated polyol esters having a larger carbon number may have a greater performance than the neopentylated polyol esters having a smaller carbon number.
  • the lubricant base substances LBl and LB2 may have a performance slightly greater than the lubricant base substance LB 3 (safflower oil).
  • the lubricant base substances LB4 and LB5 may have a performance slightly greater than the lubricant base substances LB6 and LB7 (pentaerythritol).
  • Example 8 In a second test, two example lubricants (Examples 8 and 9; nonchlorine lubricants) were prepared by utilizing the above listed substances as the lubricant base and the additive. Compositions of the two types of lubricants (Examples 8 and 9) are shown in Table 2.
  • Example 8 a combination of the lubricant base substances LBl and LB4 are used as the lubricant base. As will be recognized, the lubricant base substances LBl and LB4 are respectively have a relatively excellent performance as demonstrated in the first test.
  • Example 9 a combination of the lubricant base substances LB3 and LB6 are used as the lubricant base. As will be recognized, the lubricant base substances LB3 and LB6 are respectively have a relatively inferior performance as demonstrated in the first test. [0047]
  • Table 2 demonstrates that the lubricants of Examples 8 and 9 may have good seize resistance and lubricity similar to Examples 1-7. Further, as will be apparent from Tables 1 and 2, the combination of the lubricant base substances LBl and LB4 may have substantially the same performance as the lubricant base substance LBl or LB4 in the pure form. Similarly, the combination of the lubricant base substances LB3 and LB6 may have substantially the same performance as the lubricant base substance LB3 or LB6 in the pure form. [0050] In a third test, six example lubricants (Examples 10-15) were prepared by utilizing the above listed substances as the lubricant base and the additive.
  • compositions of the six types of lubricants are shown in Table 3.
  • the lubricant base substance LBl having a relatively excellent performance as demonstrated in the first test is used as the lubricant base.
  • the additive substances al and a2 are used as the additive.
  • the additive substances al and a2 are respectively added so that the formulated lubricants may have various sulfur content.
  • the punches 1 and 2 may have excellent surface appearance. Also, the punched holes of the formed articles may have excellent sheared surface appearance. To the contrary, according to the lubricants of Examples 12 and 15 having a lesser sulfur content, the punches 1 and 2 may have inferior surface appearance. Also, the punched holes of the formed articles may have inferior sheared surface appearance. These results means that the lubricants having a greater sulfur content may generally have greater seize resistance and lubricity than the lubricants having a lesser sulfur content. Further, by comparing Example 11 with Example 14, it is presumed that an appropriate sulfur content may preferably be about 5.0 % or more, more preferably be about 6.0 % or more. [0054]
  • Examples 16-18 were prepared by utilizing the above listed substances as the lubricant base and the additive. Compositions of the three types of lubricants (Examples 16-18) are shown in Table 4. In these examples, only the lubricant base substance LBl is used as the lubricant base. However, all of the additive substances al, a2, bl and cl (Ingredients A-C) are used as the additive. The additive substances bl is added so that the formulated lubricants may have various zinc content. [0055]
  • the lubricants having a greater zinc content may generally have greater seize resistance and lubricity than the lubricants having a lesser zinc content. Further, by comparing Example 16 with Example 17, it is presumed that an appropriate zinc content may preferably be about 0.2 % or more, more preferably be about 0.3 % or more.
  • Examples 19-22 were prepared by utilizing the above listed substances as the lubricant base and the additive. Compositions of the four types of lubricants (Examples 19-22) are shown in Table 5. In these examples, only the lubricant base substance LBl is used as the lubricant base. However, all of the additive substances al, a2, bl and cl (Ingredients A-C) are used as the additive. The additive substances cl is added so that the formulated lubricants may have various calcium content. [0059]
  • the lubricants having a greater calcium content may generally have greater seize resistance and lubricity than the lubricants having a lesser calcium content. Further, from these results shown in Table 5, it is presumed that an appropriate calcium content may preferably be about 0.01 % or more, more preferably be about 0.5 % or more.
  • control lubricants containing no lubricant base may have inferior seize resistance and lubricity.
  • the results of the first to sixth tests demonstrate that the lubricant of the present invention may have excellent performance (e.g., excellent seize resistance and lubricity) that are same as or similar to the conventional chlorine lubricant when they are used for processing (in particular, shearing) of the metallic material.
  • the present lubricant may be suitable for processing (in particular, shearing) of the metallic material.
  • the lubricant may preferably contain both of the lubricant base and the additive at a desired ratio.
  • the lubricant base may be the vegetable oils and/or the neopentylated polyol esters.
  • the additive may be the sulfuric extreme pressure agent (Ingredient A) 5 the organozinc compound (Ingredient B) and the calcium ingredient (Ingredient C).
  • the sulfur content in the lubricant may preferably be 5.0-50 % of total weight of the lubricant.
  • the zinc content in the lubricant may preferably be 0.2-10 % of total weight of the lubricant.
  • the calcium content in the lubricant may preferably be 0.01-10 % of total weight of the lubricant.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

L'invention concerne un lubrifiant non chloré destiné à une utilisation pour le traitement d'un matériau métallique, ledit lubrifiant comprenant une base lubrifiante. La base lubrifiante comprend au moins un élément choisi dans le groupe comprenant les huiles végétales et les esters de polyol néopentylés. Le lubrifiant peut également comprendre un additif ajouté à la base lubrifiante. L'additif comprend un agent sulfurique résistant aux pressions extrêmes, un composé d'organozinc et un ingrédient à base de calcium. L'additif est de préférence ajouté à la base lubrifiante de manière telle que la teneur en soufre, la teneur en zinc et la teneur en calcium du lubrifiant sont respectivement 5,0-50 % en poids, 0,2-10 % en poids et 0,01-10 % en poids du poids total du lubrifiant.
PCT/JP2007/062559 2006-06-16 2007-06-15 Lubrifiants destinés à une utilisation pour le traitement d'un matériau métallique et procédés de traitement du matériau métallique utilisant les lubrifiants Ceased WO2007145380A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/302,307 US20090239774A1 (en) 2006-06-16 2007-06-15 Lubricants for use in processing of metallic material and methods for processing the metallic material using the lubricants
CN2007800222433A CN102015982A (zh) 2006-06-16 2007-06-15 用于加工金属材料的润滑油及使用该润滑油加工金属材料的方法

Applications Claiming Priority (2)

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JP2006-167344 2006-06-16
JP2006167344A JP4684951B2 (ja) 2006-06-16 2006-06-16 金属材料加工用の潤滑油とそれを用いた金属材料の加工方法

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WO2007145380A2 true WO2007145380A2 (fr) 2007-12-21

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JP (1) JP4684951B2 (fr)
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WO (1) WO2007145380A2 (fr)

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US20090239774A1 (en) 2009-09-24
JP2007332307A (ja) 2007-12-27
JP4684951B2 (ja) 2011-05-18
CN102015982A (zh) 2011-04-13

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