EP0718396B1 - Lubrifiant pour la déformation des métaux - Google Patents

Lubrifiant pour la déformation des métaux Download PDF

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Publication number
EP0718396B1
EP0718396B1 EP95118194A EP95118194A EP0718396B1 EP 0718396 B1 EP0718396 B1 EP 0718396B1 EP 95118194 A EP95118194 A EP 95118194A EP 95118194 A EP95118194 A EP 95118194A EP 0718396 B1 EP0718396 B1 EP 0718396B1
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EP
European Patent Office
Prior art keywords
weight
lubricant
parts
acrylic acid
molecular weight
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
Application number
EP95118194A
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German (de)
English (en)
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EP0718396A1 (fr
Inventor
Klaus-Dieter Nittel
Norbert Schwinke-Kruse
Günter Hesse
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Chemetall GmbH
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Chemetall GmbH
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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
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/02—Polyethene
    • 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
    • C10M143/10—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing aromatic monomer, e.g. styrene
    • 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
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
    • C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
    • C10M145/14—Acrylate; Methacrylate
    • 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
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/28—Polyoxyalkylenes of alkylene oxides containing 2 carbon atoms only
    • 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
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
    • C10M145/36—Polyoxyalkylenes etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C10M2201/042—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/085—Phosphorus oxides, acids or 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/087—Boron oxides, acids or 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
    • 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
    • C10M2205/022—Ethene
    • 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
    • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • 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
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • 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
    • 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
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • the invention relates to a lubricant concentrate for the Cold forming of metals containing polyethylene, Polyacrylate and styrene / acrylic acid copolymer as well as a Process to facilitate cold forming of metallic workpieces.
  • Lubricants containing resin play particularly well those based on acrylic resin play a special role. That's the way it is known for example from EP-A-0 175 547, lubricants for Use cold forming of metal pipes, the one Dispersion of a more defined Have butyl acrylate / methyl methacrylate ester copolymer.
  • thermosetting Acrylic-based resin with a glass transition point of -10 up to + 25 ° C, at 3 to 15 wt% wax and at 0.5 to 5 wt% Surfactant.
  • the weight ratio of thermosetting resin to wax should be set to 2 to 12.
  • the thermosetting resin is a copolymer different monomers with a degree of polymerization of 1000 to 50,000 (DE-A-37 20 841).
  • a concentrate for making one is Apply a suitable lubricant coating Formulation known to be a film-forming component Contains olefin and a leveling agent.
  • the relationship between film-forming component and polyolefin is said to Range from 0.25: 1 to 2: 1.
  • Components are polymers and copolymers based on acrylate called.
  • leveling agents two or trihydric alcohols, glycol ethers, butyl cellosolve, surfactants or phosphate ethers and esters can be used.
  • lubricants or Common to lubricant concentrates is that they are used in the Practical demands, especially regarding Lubricity, environmental protection, workplace hygiene and Removability after forming, not to be met capital.
  • the object of the invention is to provide a lubricant concentrate Formulation of a lubricant for the cold forming of Provide metals that are also heavy in forming satisfactorily, essentially is of an aqueous nature and therefore with regard to environmental protection and Workplace hygiene is harmless, and that after Forming can be removed in a simple manner.
  • the lubricant concentrate according to the invention can be used both in solid form as well as in the form of a liquid concentrate available.
  • the acrylic acid component corresponding to the Polymers b) and c) already predominantly as a salt inorganic cations are present.
  • the Acrylic acid component usually present as a free acid be and the concentrate the required amount inorganic cations in the form of their hydroxides, for example be incorporated.
  • the lubricant applied to the workpiece is that the Softening points of the individual components over the Distribute temperature range, which is usually during the Deformation of the workpiece is passed through. This is about it is a temperature range determined by the basic parameters Ambient temperature and 200 ° C (measured at the Workpiece surface) is limited. As a result of the distribution the softening points of the individual polymers over the mentioned temperature range plasticizes the Lubricant film gradually and can occur Follow the surface enlargement without breaking the film.
  • a preferred embodiment of the invention provides Lubricant concentrate before that an additional content of 2 to 8 parts by weight of polyacrylate with a molecular weight from 3000 to 4500.
  • an additional content of 2 to 8 parts by weight of polyacrylate with a molecular weight from 3000 to 4500 In this case, too Acrylic acid component under conditions of use for predominantly as a salt of inorganic cations and the softening point of the component within the above-mentioned temperature range.
  • the acrylic acid component the lubricant concentrate as the salt of the cations ammonium, Sodium, potassium, lithium, calcium, zinc, bismuth and / or Barium is present.
  • Another advantageous embodiment of the invention is to add an additional one to the lubricant concentrate Content of 2 to 8 parts by weight of a copolymer Acrylic acid esters of ethanol and / or propanol and Methacrylic acid with a molecular weight of at least 300,000 to be incorporated.
  • Methacrylic acid component under conditions of use for predominantly as a salt of inorganic cations to be present, the salt-forming cation from the group Ammonium, sodium, potassium, lithium, calcium, zinc, bismuth and / or barium.
  • the monomer ratio Acrylic acid ester: methacrylic acid is in the range of 3: 1 up to 1: 1.
  • Lubricant concentrate consists of an additional one Content of 5 to 15 parts by weight of a nonionic surfactant, preferably an ethoxylated fatty alcohol with more than 6 Ethylene oxide groups, and / or in a further content of 12 up to 25 parts by weight of ethylene / acrylic acid copolymer with a Molecular weight from 6000 to 10000 and one Monomer ratio ethylene: acrylic acid in the range of 9: 1 up to 2: 1.
  • a nonionic surfactant preferably an ethoxylated fatty alcohol with more than 6 Ethylene oxide groups
  • 12 up to 25 parts by weight of ethylene / acrylic acid copolymer with a Molecular weight from 6000 to 10000 and one Monomer ratio ethylene: acrylic acid in the range of 9: 1 up to 2: 1.
  • Lubricant concentrate in that there is an additional Content of 2 to 8 parts by weight of sulfosuccinic diester having.
  • the invention also relates to a process for facilitating the cold forming of metallic workpieces with the aid of the lubricant concentrate described above, the lubricant which facilitates the cold forming being applied from an aqueous dispersion with 5 to 25% by weight of solids.
  • the dispersion should expediently be applied in such a way that, after drying, a coating weight of 0.05 to 10 g / m 2 results.
  • the invention in the case of particularly heavy forming, on the Workpieces before applying the lubricant Conversion coating, especially a phosphate coating produce.
  • the lubricant concentrate according to the invention can in itself known pigments, such as graphite, molybdenum disulfide, Contain titanium phosphate and / or borate.
  • pigments such as graphite, molybdenum disulfide, Contain titanium phosphate and / or borate.
  • each effective for individual workpieces according to the application Inhibitors are added.
  • lubricant concentrate according to the invention can apply lubricants to facilitate cold forming Workpieces made of iron, steel, aluminum, zinc, copper and whose alloys are applied.
  • the concentrate obtained according to Example 1 was diluted with deionized water in a weight ratio of 1: 1 to coat bright stainless steel pipes.
  • the lubricant was applied by dipping for 3 minutes at room temperature and then drying.
  • the lubricant film had a weight of 4 g / m 2 .
  • Stainless steel tubes with the most varied dimensions and with the most varied degrees of deformation could be drawn without problems, without the formation of grooves.
  • Stainless steel wires of quality X5CrNi18.10 with one Diameters of 4.2 mm were in a lubricant bath from Room temperature treated for 1 min in diving and then dried.
  • the lubricant bath was diluted by 70 parts by weight of concentrate with 30 parts by weight of fully desalinated Water has been produced.
  • a first batch of stainless steel wires was made without renewed Lubricant application pulled to 1.5 mm in nine moves what corresponds to a degree of deformation of 87.2%.
  • a second Lot was cut in three stages to a final diameter of 1.82 mm - corresponding to a degree of deformation of 81.2% - drawn. In both cases the results were achieved perfect.
  • the ribbons were then cut into round blanks and opened a multi-stage press without further lubricant addition Formed deep-drawn parts for the automotive industry.
  • the quality of the deep-drawn parts was perfect.
  • the parts could then with an aqueous, alkaline Spray cleaners can be cleaned without difficulty.
  • Bar-shaped raw material for the production of automobile steering parts was immersed in the lubricant bath at room temperature for 0.5 min. After the subsequent drying, the layer weight was 1.6 g / m 2 .
  • the shaping was done by wobble presses ready-to-install condition.

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

Claims (10)

  1. Concentré d'agent lubrifiant pour formage à froid de métaux, ayant une certaine teneur en polyéthylène, polyacrylate et copolymère styrène/acide acrylique, caractérisé par le fait qu'il contient
    a) de 20 à 50 parties en poids de polyéthylène ayant un point de ramollissement supérieur à 120 °C et une taille de particules comprise entre 0,1 et 50 µm,
    b) de 2 à 8 parties en poids de polyacrylate ayant une masse moléculaire comprise entre 4500 et 10 000, ainsi que
    c) de 2 à 8 parties en poids de copolymère styrène/acide acrylique ayant une masse moléculaire moyenne comprise entre 150 000 et 250 000 et une température de transition vitreuse comprise entre 45 et 55 °C,
    le composant acide acrylique des polymères selon point b) et c) étant, dans les conditions d'application, majoritairement sous forme de sel de cations minéraux et les points de ramollissement des différents polymères étant répartis sur le domaine de température allant de la température ambiante à 200 °C.
  2. Concentré d'agent lubrifiant selon la revendication 1, caractérisé par le fait qu'il contient en outre de 2 à 8 parties en poids de polyacrylate ayant une masse moléculaire comprise entre 3000 et 4500, l'acide acrylique étant présent, dans les conditions d'application, majoritairement sous forme de sel de cations minéraux et son point de ramollissement étant situé dans le domaine de température allant de la température ambiante à 200 °C.
  3. Concentré d'agent lubrifiant selon la revendication 1 ou 2, caractérisé par le fait que le composant acide acrylique est présent sous forme de sel d'ammonium, de sodium, de potassium, de lithium, de calcium, de zinc, de bismuth et/ou de baryum.
  4. Concentré d'agent lubrifiant selon une des revendications 1, 2 ou 3, caractérisé par le fait qu'il contient en outre de 2 à 8 parties en poids d'un copolymère d'acrylate d'éthyle et/ou de propyle et d'acide (méth)acrylique ayant une masse moléculaire au moins égale à 300 000, le composant acide méthacrylique étant présent, dans les conditions d'application, majoritairement sous forme de sel de cations minéraux, de préférence sous forme de sel d'ammonium, de sodium, de potassium, de lithium, de calcium, de zinc, de bismuth et/ou de baryum, et le rapport des monomères ester d'acide acrylique/acide méthacrylique étant compris entre 3/1 et 1/1.
  5. Concentré d'agent lubrifiant selon une ou plusieurs des revendications 1 à 4, caractérisé par le fait qu'il contient en outre de 5 à 15 parties en poids d'un agent tensioactif non ionique, de préférence un alcool gras éthoxylé par plus de 6 motifs d'oxyde d'éthylène.
  6. Concentré d'agent lubrifiant selon une ou plusieurs des revendications 1 à 5, caractérisé par le fait qu'il contient en outre de 12 à 25 parties en poids d'un copolymère d'éthylène et d'acide acrylique ayant une masse moléculaire comprise entre 6000 et 10 000 et un rapport des monomères éthylène/acide acrylique compris entre 9/1 et 2/1.
  7. Concentré d'agent lubrifiant selon une ou plusieurs des revendications 1 à 6, caractérisé par le fait qu'il contient en outre de 2 à 8 parties en poids de diester d'acide sulfosuccinique.
  8. Procédé pour faciliter le formage à froid de pièces métalliques par application d'un film d'agent lubrifiant par le biais d'un concentré d'agent lubrifiant selon une ou plusieurs des revendications 1 à 7, caractérisé par le fait que l'on applique le film d'agent lubrifiant à partir d'une dispersion aqueuse ayant une teneur en matière solide comprise entre 5 et 25 % en poids.
  9. Procédé selon la revendication 8, caractérisé par le fait que l'on forme un film d'agent lubrifiant ayant une teneur en matières sèches comprise entre 0,05 et 10 g/m2.
  10. Procédé selon la revendication 8 ou 9, caractérisé par le fait que l'on forme sur les pièces, avant l'application du film d'agent lubrifiant, un revêtement de conversion, en particulier un revêtement de phosphate.
EP95118194A 1994-12-22 1995-11-18 Lubrifiant pour la déformation des métaux Expired - Lifetime EP0718396B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4445993 1994-12-22
DE4445993A DE4445993A1 (de) 1994-12-22 1994-12-22 Schmiermittel für die Metallumformung
US09/137,804 US6034041A (en) 1994-12-22 1998-08-20 Lubricant for metal forming

Publications (2)

Publication Number Publication Date
EP0718396A1 EP0718396A1 (fr) 1996-06-26
EP0718396B1 true EP0718396B1 (fr) 2001-02-28

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DE (1) DE4445993A1 (fr)

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DE4445993A1 (de) 1996-06-27
US6034041A (en) 2000-03-07
EP0718396A1 (fr) 1996-06-26

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