EP0638116B1 - Lubrifiants solides non tachants - Google Patents

Lubrifiants solides non tachants Download PDF

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Publication number
EP0638116B1
EP0638116B1 EP90916328A EP90916328A EP0638116B1 EP 0638116 B1 EP0638116 B1 EP 0638116B1 EP 90916328 A EP90916328 A EP 90916328A EP 90916328 A EP90916328 A EP 90916328A EP 0638116 B1 EP0638116 B1 EP 0638116B1
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EP
European Patent Office
Prior art keywords
lubricant
film
metal
saturated aliphatic
aliphatic monohydric
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.)
Expired - Lifetime
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EP90916328A
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German (de)
English (en)
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EP0638116A1 (fr
Inventor
Mark Howard Foster
Christopher Pargeter
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Rio Tinto Alcan International Ltd
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Alcan International Ltd Canada
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    • 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
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/10—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M105/12—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms monohydroxy
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/70—Esters of 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/06—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing butene
    • 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
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/02—Natural products
    • C10M159/06—Waxes, e.g. ozocerite, ceresine, petrolatum, slack-wax
    • 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
    • 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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/0215—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic 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
    • 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
    • C10M2207/28—Esters
    • C10M2207/284—Esters of aromatic 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/286—Esters of polymerised unsaturated acids
    • 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
    • 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
    • C10N2040/241—Manufacturing joint-less pipes
    • 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
    • C10N2040/242—Hot 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
    • C10N2040/243—Cold 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
    • C10N2040/244—Metal working of specific metals
    • 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
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • 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
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • 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
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating

Definitions

  • the present invention relates to non-staining solid lubricants suitable for use in metal working operations, for instance in cold-rolling, drawing or extrusion of metals, especially aluminium.
  • Lubricants usually liquid lubricants, are used in metal working operations to reduce friction between the surface of metal being worked and a surface of the apparatus carrying out the operation.
  • a liquid lubricant reduces friction by separating the two surfaces with a thin fluid film having little resistance to shear.
  • the pressure between a surface of the metal being worked and a surface of the apparatus is so great that the fluid film of a liquid lubricant may be squeezed out so allowing actual metal-to-metal contact with the result that excessive damage to the surfaces may occur.
  • Solid film lubricants having much greater load bearing properties have been developed to overcome this and other disadvantages associated with liquid lubricants.
  • a lubricant may be expected to fulfil certain other requirements if it is to be useful industrially. For instance, it should be easy to apply and easy to remove, it should afford some protection to the metal surface during handling and storage, it should present no health hazard to persons coming into contact with it and, obviously, should be inert to the surfaces with which it comes into contact. Many lubricants produce severe stains on the surface of the metal during annealing thereof. It is, therefore, highly desirable to avoid such staining by using a lubricant having the properties demanded by the particular conditions under which the lubricated metal is to be worked and which is also non-staining.
  • the present invention is based on the discovery that a solid film of one or more saturated aliphatic monohydric alcohols having from 14 to 18 carbon atoms provided on the surface of the metal being worked has good lubrication characteristics under cold-working conditions and can be removed by heating to leave substantially no stain on the metal surface.
  • the present invention provides a method of cold forming a metal workpiece comprising providing on the surface of the workpiece to be subjected to forming a film of a lubricant, subjecting the workpiece to a forming operation and removing the film of lubricant from the metal surface characterised in that the lubricant film comprises a solid film of a saturated aliphatic monohydric alcohol having from 14 to 18 carbon atoms and in that the lubricant film is removed from the metal surface without causing staining by the application of heat thereto.
  • the present invention further provides the use of a saturated aliphatic monohydric alcohol having from 14 to 18 carbon atoms as a solid lubricant in the cold working of a metal workpiece removed from the surface of the metal by heating without staining.
  • the present invention also provides the use of a composition comprising a solution of a saturated aliphatic monohydric alcohol having from 14 to 18 carbon atoms in an inert volatile organic solid as a lubricant film-forming agent in the cold working of a metal workpiece to form a film of solid 14-18 C saturated aliphatic monohydric alcohol lubricant on the workpiece surface removed from the metal surface by heating without staining.
  • a saturated aliphatic monohydric alcohol having from 14 to 18 carbon atoms.
  • Such alcohols have good lubricating and load-supporting properties, are solid at room temperatures (20-25°C) and may be, at worst, only slightly staining or, at best, totally non-staining.
  • these alcohols include myristyl alcohol, cetyl alcohol and stearyl alcohol. Commercial purity compounds may be used and these generally contain proportions of higher and/or lower homologues as impurities.
  • Cetyl alcohol (hexadecanol) is highly preferred for use in the present invention in view of its melting point ( ⁇ 49°C) and because of its excellent non-staining property.
  • the 14-18C saturated aliphatic monohydric alcohol lubricant is applied to the surface of the metal workpiece by dip coating the workpiece in a solution of the alcohol lubricant in an inert volatile organic solvent. After removal of the volatile solvent by evaporation a film of the solid alcohol remains on the surface of the workpiece. It is possible that the film obtained in this way may not be of uniform thickness; the deposited alcohol lubricant being thicker in some regions than in other regions of the surface of the workpiece. We have observed, however, that in such cases where the thickness of the deposited film of solid alcohol is non-uniform the film flows at the point where pressure is applied to the workpiece during working thereof, e.g. at the die in a metal drawing operation or at the press platen in a metal pressing operation, with the result that the workpiece becomes evenly covered at the point of working.
  • the 14-18C saturated aliphatic monohydric alcohol is dissolved in an inert volatile organic solvent.
  • any organic solvent for the alcohol which is liquid at normal room temperature but which evaporates at a temperature just above that and which is inert to both the alcohol and the metal surface may be used.
  • suitable solvents include diethyl ether, methanol and benzene and chlorinated hydrocarbons, such as trichloroethylene and 1,1,1-trichloroethane.
  • the concentration of the 14-18C alcohol in the volatile organic solvent is not critical and, in principle, any concentration up to the solubility limit of the particular solvent may be used. Typically, the concentration of alcohol in the organic solvent will be about 10% by weight.
  • a liquid polybutene may be incorporated in an amount of up to 10% by weight of the total weight of the lubricant composition (excluding solvent) to modify the film properties of the lubricant on the surface of the workpiece and the flow characteristics of the lubricant film during the deformation without causing staining of the metal surface on annealing.
  • liquid polybutene tends to soften any film containing it and the 14-18 saturated aliphatic monohydric alcohol and, therefore, if more than 10% by weight of the liquid polybutene is used the lubricant film obtained on the surface of the workpiece may become tacky and rather unstable.
  • Any liquid polybutene may be used according to this embodiment of the invention.
  • Liquid polybutenes are available commercially under the name Hyvis ("Hyvis is a registered trademark), for example Hyvis 200, having a molecular mass (number average) of 2400 and a Kinematic viscosity of 4300 cSt at 98.9°C.
  • the non-staining solid lubricant according to the present invention may contain a small amount of a solid or semiliquid (e.g. gelatinous) alkane species or mixture of alkane species which does not leave a staining residue on annealing, for example petroleum jelly (petrolatum), to modify the film properties of the lubricant.
  • a solid or semiliquid (e.g. gelatinous) alkane species or mixture of alkane species which does not leave a staining residue on annealing for example petroleum jelly (petrolatum)
  • Such an alkane-based film modifier may be used together with or as an alternative to the liquid polybutene mentioned above.
  • any alkane-based film modifier if used will be used in an amount such that the combined weight of alkane-based film modifier and any liquid polybutene does not represent more than 10% of the weight of the total lubricant composition (excluding solvent).
  • an (liquid) ester e.g. butyl stearate, methyl laurate or methyl myristate
  • the ester may be used in an amount not exceeding 10% by weight based on the total weight of the lubricant (excluding solvent) and would be incorporated as an alternative to an equivalent amount of liquid polybutene. We refer, however, not to use more than about 1% by weight of the ester.
  • the solid lubricant after evaporation of the volatile carrier solvent, forms a tenaceous film on the surface of a metal workpiece.
  • a typical lubricant coverage would be less than about 10gm -2 .
  • the lubricant solution will be applied to a metal surface to provide about 5g of solid lubricant per square metre of surface.
  • the solid film lubricant does not require removal prior to annealing the metal since the component(s) of the solid lubricant, i.e. the alcohol and any optionally present polybutene, petroleum jelly and/or butyl stearate, will evaporate from or decompose on the metal surface cleanly without staining.
  • the component(s) of the solid lubricant i.e. the alcohol and any optionally present polybutene, petroleum jelly and/or butyl stearate
  • a series of disc compression tests was carried out using various lubricants.
  • an aluminium disc having a diameter of 32mm and a thickness of 5mm was dipped into a solution of the lubricant under test in a volatile organic solvent so that both the upper and the lower surfaces of the disc were coated with the lubricant solution.
  • the coated disc was then left until the organic solvent had evaporated to leave a coating of lubricant on the aluminium surface.
  • Each disc was subjected to pressing at 5.6 x 10 7 kg m -2 over a period of 30 seconds and the thickness of the disc was then measured.
  • the test was carried out 5 times for each lubricant and the mean reduction (%) was calculated.

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  • 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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Abstract

Lubrifiant pour le façonnage à froid du métal. Ce dernier est recouvert d'une pellicule solide d'un monoalcool aliphatique saturé ayant entre 14 et 18 atomes de carbone. Après façonnage du métal, on peut éliminer le lubrifiant solide par chauffage sans tacher la surface métallique. La pellicule de lubrifiant solide peut en outre contenir entre 1 et 10 % par poids d'un polybutène, de pétrolatum ou de stéarate de butyle, afin de modifier les propriétés de la pellicule de lubrifiant.

Claims (14)

  1. Un procédé pour le façonnage froid d'une pièce métallique à usiner, comportant le fait de prévoir sur la surface de la pièce à usiner devant être soumise à la formation d'un film de lubrifiant, de soumettre la pièce à usiner à une opération de formage et d'élimincr le film de lubrifiant de la surface du métal, caractérisé en ce que le film de lubrifiant comporte un film solide d'un alcool aliphatique monohydrique saturé, ayant de 14 à 18 atomes de carbone, et en ce que le film de lubrifiant est éliminé de la surface métallique sans provoquer de salissure en y appliquant de la chaleur.
  2. Un procédé selon la revendication 1, dans lequel le film solide de lubrifiant est amené à s'écouler sur la surface métallique en un point où la pression, due à l'opération de formage est appliquée.
  3. Un procédé selon la revendication 1 ou la revendication 2, l'alcool aliphatique saturé monohydrique est l'alcool cétylique.
  4. Un procédé selon l'une quelconque des revendications 1 à 3, dans lequel le lubrifiant renferme en outre de 1 à 10% en poids, par rapport au poids total de lubrifiant, d'un polybutène de pétrolatum ou de stéarate de butyle.
  5. L'utilisation d'un alcool aliphatique saturé monohydrique, ayant de 14 à 18 atomes de carbone en tant que lubrifiant solide dans le façonnage à froid d'une pièce métallique à usiner, éliminée de la surface du métal par chauffage sans salissure.
  6. L'utilisation selon la revendication 5, dans laquelle l'alcool aliphatique saturé monohydrique est l'alcool cétylique.
  7. L'utilisation selon l'une quelconque des revendications 5 ou 6, dans laquelle le lubrifiant renferme également de 1 à 10% en poids, par rapport au poids total du lubrifiant, d'un polybutène, de pétrolatum ou de stéarate de butyle.
  8. L'utilisation d'une composition comportant une solution d'un alcool aliphatique saturé monohydrique, ayant de 14 à 18 atomes de carbone, dans un solvant organique, inerte et volatil, en tant qu'agent formateur de film lubrifiant dans le façonnage à froid d'une pièce métallique à usiner afin de former un film d'un lubrifiant à base d'un alcool aliphatique saturé en C14 à C18, monohydrique sur la surface de la pièce à usiner, éliminé de la surface du métal par chauffage sans laisser de salissure.
  9. L'utilisation selon la revendication 8, dans laquelle l'alcool aliphatique saturé, monohydrique est l'alcool cétylique.
  10. L'utilisation selon l'une quelconque des revendications 8 ou 9, dans laquelle le solvant organique, volatil et inerte est choisi parmi le trichloroéthylène et le 1,1,1-trichloréthane.
  11. L'utilisation selon l'une quelconque des revendications 8 à 10, dans laquelle la solution renferme environ 10% en poids d'alcool aliphatique saturé, monohydrique.
  12. L'utilisation selon l'une quelconque des revendications 8 à 11, dans laquelle la solution renferme en outre un matériau choisi parmi un polybutène, du pétrolatum et du stéarate de butyle en une quantité de 1 à 10% en poids en se basant sur le poids combiné de l'alcool aliphatique saturé monohydrique et dudit matériau.
  13. L'utilisation selon l'une quelconque des revendications 5 à 12, dans laquelle la pièce métallique à usiner est formée d'aluminium ou d'un alliage d'aluminium.
  14. L'utilisation selon l'une quelconque des revendications 5 à 13, dans laquelle une pièce métallique à usiner sous forme d'un tube est choisie pour une opération d'étiragc à froid.
EP90916328A 1989-10-31 1990-10-30 Lubrifiants solides non tachants Expired - Lifetime EP0638116B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB898924457A GB8924457D0 (en) 1989-10-31 1989-10-31 Non-staining solid lubricants
GB8924457 1989-10-31
PCT/GB1990/001659 WO1991006619A1 (fr) 1989-10-31 1990-10-30 Lubrifiants solides non tachants

Publications (2)

Publication Number Publication Date
EP0638116A1 EP0638116A1 (fr) 1995-02-15
EP0638116B1 true EP0638116B1 (fr) 1999-06-02

Family

ID=10665440

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Application Number Title Priority Date Filing Date
EP90916328A Expired - Lifetime EP0638116B1 (fr) 1989-10-31 1990-10-30 Lubrifiants solides non tachants

Country Status (8)

Country Link
EP (1) EP0638116B1 (fr)
JP (1) JPH05501427A (fr)
AU (1) AU6638490A (fr)
CA (1) CA2071830A1 (fr)
DE (1) DE69033147T2 (fr)
GB (1) GB8924457D0 (fr)
WO (1) WO1991006619A1 (fr)
ZA (1) ZA908752B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165589A1 (fr) 2015-11-04 2017-05-10 Henkel AG & Co. KGaA Lubrifiant en poudre à base de sels de zinc d'acides gras et son utilisation
US10975324B2 (en) 2015-11-04 2021-04-13 Henkel Ag & Co. Kgaa Powder lubricant based on fatty acids and fatty acid glycerides and use thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04233998A (ja) * 1990-12-28 1992-08-21 Nippon Parkerizing Co Ltd 潤滑処理アルミニウム板並びにアルミニウム板用潤滑処理剤
US5401575A (en) * 1992-12-04 1995-03-28 Aluminum Company Of America Aluminum sheet coated with a lubricant comprising dioctyl sebacate and petrolatum
US5672401A (en) * 1995-10-27 1997-09-30 Aluminum Company Of America Lubricated sheet product and lubricant composition
US6749772B2 (en) * 2002-04-24 2004-06-15 Illinois Tool Works, Inc. Fluorescent lubricant
JP5566037B2 (ja) * 2009-02-10 2014-08-06 Ｊｘ日鉱日石エネルギー株式会社 極微量油剤供給式アルミニウム加工用油剤組成物
DE202015005833U1 (de) 2015-08-13 2015-11-18 Fuchs Petrolub Se Zusammensetzung zur Minimalmengenschmierung und deren Verwendung
ES2709344T3 (es) 2015-08-13 2019-04-16 Fuchs Petrolub Se Composición para la lubricación en cantidad mínima y su uso

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948068B1 (fr) * 1970-07-30 1974-12-19
US3899433A (en) * 1972-06-29 1975-08-12 Ethyl Corp Method of metalworking utilizing a particular lubricant composition
GB8502148D0 (en) * 1985-01-29 1985-02-27 Alcan Int Ltd Metal-forming lubricant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3165589A1 (fr) 2015-11-04 2017-05-10 Henkel AG & Co. KGaA Lubrifiant en poudre à base de sels de zinc d'acides gras et son utilisation
US10975324B2 (en) 2015-11-04 2021-04-13 Henkel Ag & Co. Kgaa Powder lubricant based on fatty acids and fatty acid glycerides and use thereof

Also Published As

Publication number Publication date
ZA908752B (en) 1991-09-25
EP0638116A1 (fr) 1995-02-15
DE69033147D1 (de) 1999-07-08
DE69033147T2 (de) 2000-01-05
WO1991006619A1 (fr) 1991-05-16
CA2071830A1 (fr) 1991-05-01
AU6638490A (en) 1991-05-31
JPH05501427A (ja) 1993-03-18
GB8924457D0 (en) 1989-12-20

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