CH596294A5 - High temp. lubricants for hot forming of metals - Google Patents
High temp. lubricants for hot forming of metalsInfo
- Publication number
- CH596294A5 CH596294A5 CH624274A CH624274A CH596294A5 CH 596294 A5 CH596294 A5 CH 596294A5 CH 624274 A CH624274 A CH 624274A CH 624274 A CH624274 A CH 624274A CH 596294 A5 CH596294 A5 CH 596294A5
- Authority
- CH
- Switzerland
- Prior art keywords
- weight
- graphite
- metals
- lubricants
- hot forming
- Prior art date
Links
- 239000000314 lubricant Substances 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 150000002739 metals Chemical class 0.000 title claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 239000010439 graphite Substances 0.000 claims abstract description 16
- 229920001577 copolymer Polymers 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- 239000007900 aqueous suspension Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 abstract description 4
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 125000002947 alkylene group Chemical group 0.000 abstract 1
- 239000000375 suspending agent Substances 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 150000004676 glycans Chemical class 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920001282 polysaccharide Polymers 0.000 description 3
- 239000005017 polysaccharide Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229920013820 alkyl cellulose Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- GLVVKKSPKXTQRB-UHFFFAOYSA-N ethenyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC=C GLVVKKSPKXTQRB-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- -1 maleic acid ester Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- XWNXEWLCHSLQOI-UHFFFAOYSA-K trisodium;triacetate Chemical compound [Na+].[Na+].[Na+].CC([O-])=O.CC([O-])=O.CC([O-])=O XWNXEWLCHSLQOI-UHFFFAOYSA-K 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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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
- C10M7/00—Solid or semi-solid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single solid or semi-solid substances
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
- C10M2201/0413—Carbon; Graphite; Carbon black used as base material
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- 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
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- 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
- C10M2201/0423—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride used as base material
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or salts
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
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- C10M2201/102—Silicates
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- C10M2201/105—Silica
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- 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
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- 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
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- 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
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
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- 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
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- 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
- C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
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- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
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- 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
- C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
- C10M2209/062—Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
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- 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
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- 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
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- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C10M2209/084—Acrylate; Methacrylate
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- C10M2209/0863—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 polycarboxylic, e.g. maleic acid used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/045—Polyureas; Polyurethanes
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- 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
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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)
Description
Die Erfindung betrifft ein Hochtemperaturschmiermittel für die Warmverformung von Metallen. Es ist bekannt, Gemische aus Graphit und Öl anzuwenden. Bei der Anwendung solcher Produkte erfolgt eine Zersetzung der Öle, was sich nicht nur nachteilig auf die Materialeigenschaften von Werkzeug und Werkstücken auswirkt, sondern durch die Zersetzungsprodukte der Öle auch zu unzumutbaren Belästigungen der Umwelt führt. Es wurde beispielsweise vorgeschlagen, eine genau definierte Mischung von Alkalisulfat, Borax, Kaliumchlorid, Na triumtriacetat und Graphit, gegebenenfalls zusammen mit weiteren Zusätzen, in Form einer wässrigen Dispersion als Hochtemperaturschmiermittel für die spanlose Metallumformung anzuwenden (DAS 2 046 727). Damit soll erreicht werden, dass für den Einsatz in der Warmverformung von Metallen eine flüssige Schmelze, die notwendig sein soll, vorhanden ist. Es ist auch bekannt, einen Hochtemperaturschmierstoff aus einem Schmelzprodukt von Phosphaten und Boraten der Alkalimetalle und gegebenenfalls des Zinks und/oder Aluminiums und einem Zusatz von weiteren Komponenten zur Warmverformung von Metallen herzustellen (DAS 2 154232). Schliesslich wurde ein festes Schmiermittel, bestehend hauptsächlich aus Graphit oder Wolframdisulfid und Natriumfluorid, vorgeschlagen. Das Schmiermittel soll zweckmässig in Pastenform angewandt werden (DAS 2 028 804). Auch Salzschmelzen konnten aber, insbesondere bei der Herstellung nahtloser Rohre auf sogenannten Pilgerstrassen oder Kontistrassen, nicht immer voll befriedigen. Bei den Hochtemperaturverformungsverfahren entstehen sehr hohe Temperaturen, wodurch die Viskosität solcher Schmelzen so weit sinkt, dass die Tragfähigkeit des Schmierfilms keine ausreichende Schmierung mehr gewährleistet. Ziel der Erfindung ist es, die genannten Nachteile zu vermeiden. Erfindungsgemäss wird dies mit einem Hochtemperaturschmiermittel erreicht, enthaltend: a) 10 bis 90 Gew. % Graphit, b) 2 bis 45 Gew. % Homo- oder Copolymerisat von olefinisch ungesättigten Monomeren, c) 0,5bis 8 Gew. % Dispergiermittel. Das Hochtemperaturschmiermittel wird so hergestellt, dass man Graphit in eine wässrige Suspension eines Homo- oder Copolymerisats von olefinisch ungesättigten Monomeren und eines Dispergiermittels einbringt, so dass das Mittel 10 bis 90 Gew. % Graphit, 2 bis 45 Gew. % Homo- oder Copolymers sat von olefinisch ungesättigten Monomeren und 0,5 bis 8 Gew. % Dispergiermittel enthält. Die erfindungsgemässen Mittel werden in Form von wässrigen Suspensionen mit Feststoffgehalten von 5 bis 80 Gew. % als Hochtemperaturschmiermittel für die Warmverformung von Metallen verwendet. Die Homo- oder Copolymerisate von olefinisch ungesättigten Monomeren werden zweckmässig nach dem Emulsions Polymerisationsverfahren hergestellt. Beispielsweise können die Polymerisate oder Mischpolymerisate des Vinylacetats, Vinylpropionats, Vinyllaurats, Äthylens, Butadiens, der Acrylsäure, der Acrylsäure mit Copolymeren, des Styrols, des Maleinsäureesters usw. angewendet werden. Um einen optimalen Schmiereffekt zu erzielen, muss ein trockener Schmierfilm vorliegen. Die wässrige, das Schmiermittel enthaltende Suspension wird zweckmässig auf an sich bekannte Weise, wie Aufsprühen oder Aufstreichen, auf das heisse Werkzeug aufgebracht; dabei verdampft das Wasser und durch Schmelzen bildet das Polymerisat oder Mischpolymerisat einen zähviskosen Film. Die Filmdicke beträgt zweckmässig 0,05 bis 1,0 mm, vorzugsweise 0,1 bis 0,2 mm. In die sem Film orientieren sich die Graphitteilchen, aufgrund ihrer Struktur, plättchenförmig gleichmässig über die ganze Oberfläche. Zu Beginn des Bearbeitungsprozesses schwimmt das Werkstück gewissermassen auf dem Polymerfilm. Schliesslich brennt das Homo- oder Copolymerisat sauber ab, ohne Rückstände zu hinterlassen. Der Abbrand erzeugt ein Gaspolster, das die Trennung zwischen den Reibflächen unterstützt. Gleichzeitig ergibt der Graphit eine tragfähige Trenn- und Schmierschicht, die bei lokaler Überlastung und dadurch verursachtem Abreissen des hydrodynamisch wirkenden Schmelzfilms und besonders bei Spitzentemperaturen während des Prozesses wirksam wird. Durch den Abbrand der erfindungsgemässen Zusatzstoffe ist anzunehmen, dass eine Art Schutzatmosphäre zwischen Werkzeug und Werkstück entsteht, die den Abbrand von Graphit bei höheren Temperaturen verzögert. Der im erfindungsgemässen Hochtemperaturschmiermittel angewandte Graphit weist zweckmässig eine Korngrösse bis höchstens 300 Lcm und eine Reinheit von wenigstens 96 %, vorzugsweise eine Korngrösse bis 100,um und eine Reinheit von 99,5 %, auf. Der zur Anwendung gelangende Stabilisator (Dispergiermittel) ist ein Polysaccharid, eine Alkylcellulose, beispielsweise Methylcellulose, oder ein Alginat. Es kann auch vorteilhaft ein Netzmittel in geringen Mengen zur Suspension zugegeben werden. Das erfindungsgemässe Hochtemperaturschmiermittel kann grundsätzlich zur spanlosen Metallumformung angewendet werden, beispielsweise in Gesenkschmieden. Eine bevorzugte Anwendungsform ist die Schmierung des Dornes bei der Herstellung von nahtlosen Rohren, beispielsweise auf sogenannten Pilger-, Konti- oder MPM-Strassen. Beispiel Einer wässrigen Suspension mit einem Anteil eines Vinylacetat-Mischpolymerisats von 31,1% und 3,3 % eines Polysaccharids wird Graphit und Wasser zugemischt, so dass eine Suspension mit einem Gehalt von 20 % Graphit, 9,5% Vinylacetat-Mischpolymerisat, 1 % Polysaccharid und 69,5% Wasser entsteht. Diese erfindungsgemässe Mischung wird auf den Dorn in einer MPM-Strasse, die zur Herstellung nahtloser Rohre dient, aufgesprüht. Die Zusammensetzung des Schmiermittels erlaubt es, den Schmierfilm während des Rücktransportes auf die Oberfläche des Dornes aufzusprühen. Auf der heissen Dornoberfläche bildet sich augenblicklich ein trockener wasserabstossender Film. Unmittelbar nach dem Auftragen des Films kann der Dorn im Wasserbad oder durch Aufdüsen von Wasser gekühlt werden, ohne dass der Schmierfilm abgetragen wird. Der Schmierfilm wird auch durch die intensive Wasserkühlung der Walzen, der der Dorn zu Beginn des Walzprozesses ausgesetzt ist, nicht beschädigt. Aus der Anwendung des Schmierfilms ergeben sich gegen über herkömmlichen Schmiermitteln Vorteile, wie in Wasser suspendierte physiologisch unbedenkliche Formulation, sauberer Abbrand (kein umweltfeindlicher Ölqualm). Das Schmiermittel hinterlässt eine blanke Dornoberfläche, ohne Rückstände. Die Leistung, die notwendig ist, um Rohre durch Walzwerke zu ziehen, wird erheblich verringert, die Walzgerüste arbeiten gleichmässiger und der Dornverschleiss wird stark verringert. Das Rohr umschliesst den Dorn gleichmässig, woraus eine bessere Rohrqualität resultiert, und es ist schliesslich auch möglich, mit einer gegebenen Anlage dünnere Rohrwandstärken zu erreichen.
Claims (1)
- PATENTANSPRÜCHEI. Hochtemperaturschmiermittel für die Warmverformung von Metallen, enthaltend a) 10 bis 90 Gew. % Graphit, b) 2 bis 45 Gew. % Homo- oder Copolymerisat von olefinisch ungesättigten Monomeren, c) 0,5 bis 8 Gew. % Dispergiermittel.II. Verfahren zur Herstellung eines Hochtemperaturschmiermittels gemäss Patentanspruch I, dadurch gekennzeichnet, dass man Graphit in eine wässrige Suspension eines Homooder Copolymerisats von olefinisch ungesättigten Monomeren und eines Dispergiermittels einbringt, so dass das Mittel 10 bis 90 Gew. % Graphit, 2 bis 45 Gew. % Homo- oder Copolymerisat von olefinisch ungesättigten Monomeren und 0,5 bis 8 Gew. % Dispergiermittel enthält.III. Verwendung der Mittel gemäss Patentanspruch I in Form von wässrigen Suspensionen mit Feststoffgehalten von 5 bis 80 Gew. % als Hochtemperaturschmiermittel für die Warmverformung von Metallen.
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH624274A CH596294A5 (en) | 1974-05-08 | 1974-05-08 | High temp. lubricants for hot forming of metals |
| GB4457174A GB1438215A (en) | 1974-05-08 | 1974-10-15 | High temperature lubricant |
| IT53622/74A IT1021859B (it) | 1974-05-08 | 1974-10-18 | Lubrificante ad alta temperatura per il modellamento a caldo di metalli |
| DE2450716A DE2450716C3 (de) | 1974-05-08 | 1974-10-25 | Hochtemperaturschmiermittel für die Warmverformung von Metallen |
| US05/523,499 US4052323A (en) | 1974-05-08 | 1974-11-13 | High-temperature lubricant for the hot-working of metals |
| SU742074765A SU625621A3 (ru) | 1974-05-08 | 1974-11-13 | Смазка дл гор чей обработки металлов |
| JP49131534A JPS5937317B2 (ja) | 1974-05-08 | 1974-11-13 | 高温用滑剤 |
| FR7441870A FR2270319B1 (de) | 1974-05-08 | 1974-12-18 | |
| CS753115A CS196268B2 (en) | 1974-05-08 | 1975-05-05 | Lubricant for metals hot shaping |
| CA226,398A CA1054134A (en) | 1974-05-08 | 1975-05-06 | High-temperature lubricant for the hot-working of metals |
| SE7505263A SE412919B (sv) | 1974-05-08 | 1975-05-06 | Hogtemperatursmorjmedel och anvendning av detta for varmbearbetning av metaller |
| DD185861A DD120465A5 (de) | 1974-05-08 | 1975-05-06 | |
| RO7582160A RO70139A (ro) | 1974-05-08 | 1975-05-07 | Compozitie lubrifianta pentru temperaturi inalte utilizabila pentru fasonarea metalelor la cald |
| ES437493A ES437493A1 (es) | 1974-05-08 | 1975-05-07 | Procedimiento para producir una pelicula entre una pieza de trabajo y la herramienta de conformacion en caliente de me- tales. |
| PL1975180250A PL101948B1 (pl) | 1974-05-08 | 1975-05-08 | A lubricant for hot-forming of metals |
| SU752175649A SU632305A3 (ru) | 1974-05-08 | 1975-09-30 | Концентрат смазки дл гор чей обработки металлов |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH624274A CH596294A5 (en) | 1974-05-08 | 1974-05-08 | High temp. lubricants for hot forming of metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH596294A5 true CH596294A5 (en) | 1978-03-15 |
Family
ID=4306502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH624274A CH596294A5 (en) | 1974-05-08 | 1974-05-08 | High temp. lubricants for hot forming of metals |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH596294A5 (de) |
| PL (1) | PL101948B1 (de) |
| SU (1) | SU625621A3 (de) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665936A (en) * | 1984-01-04 | 1987-05-19 | Lonza Ltd. | Process for the control of turbidity currents |
| US4735734A (en) * | 1985-10-02 | 1988-04-05 | Lonza Ltd. | Process for preparing suspensions of solid lubricants |
| US5016456A (en) * | 1988-03-30 | 1991-05-21 | Lonza Ltd. | Process for making hollow billets into tubes |
| US5042209A (en) * | 1988-01-19 | 1991-08-27 | Lonza Ltd. | Process for charging a carrier gas stream with a free-flowing material and process for operating the device |
| US5099667A (en) * | 1989-06-16 | 1992-03-31 | Lonza Ltd. | System for suspending and applying solid lubricants to tools or work pieces |
| US5205488A (en) * | 1990-03-26 | 1993-04-27 | Lonza Ltd. | Process and device for spraying a liquid intermittently, especially a lubricant suspension to be sprayed under high pressure |
| US5271854A (en) * | 1986-09-23 | 1993-12-21 | Lonza Ltd. | High temperature lubricant containing carboxylated styrene-butadiene latex |
| DE102005043542A1 (de) * | 2005-09-13 | 2007-03-15 | Graphit Kropfmühl AG | Stabile wässrige Graphitdispersion mit hohem Feststoffgehalt |
| US8307688B2 (en) | 2006-05-26 | 2012-11-13 | Sumitomo Metal Industries, Ltd. | Process for producing seamless stainless steel pipe |
-
1974
- 1974-05-08 CH CH624274A patent/CH596294A5/de not_active IP Right Cessation
- 1974-11-13 SU SU742074765A patent/SU625621A3/ru active
-
1975
- 1975-05-08 PL PL1975180250A patent/PL101948B1/pl unknown
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665936A (en) * | 1984-01-04 | 1987-05-19 | Lonza Ltd. | Process for the control of turbidity currents |
| US4735734A (en) * | 1985-10-02 | 1988-04-05 | Lonza Ltd. | Process for preparing suspensions of solid lubricants |
| EP0218989A3 (en) * | 1985-10-02 | 1989-04-26 | Lonza Ag | Method for suspending solid lubricants |
| US5271854A (en) * | 1986-09-23 | 1993-12-21 | Lonza Ltd. | High temperature lubricant containing carboxylated styrene-butadiene latex |
| US5042209A (en) * | 1988-01-19 | 1991-08-27 | Lonza Ltd. | Process for charging a carrier gas stream with a free-flowing material and process for operating the device |
| US5016456A (en) * | 1988-03-30 | 1991-05-21 | Lonza Ltd. | Process for making hollow billets into tubes |
| US5099667A (en) * | 1989-06-16 | 1992-03-31 | Lonza Ltd. | System for suspending and applying solid lubricants to tools or work pieces |
| US5205488A (en) * | 1990-03-26 | 1993-04-27 | Lonza Ltd. | Process and device for spraying a liquid intermittently, especially a lubricant suspension to be sprayed under high pressure |
| DE102005043542A1 (de) * | 2005-09-13 | 2007-03-15 | Graphit Kropfmühl AG | Stabile wässrige Graphitdispersion mit hohem Feststoffgehalt |
| US8307688B2 (en) | 2006-05-26 | 2012-11-13 | Sumitomo Metal Industries, Ltd. | Process for producing seamless stainless steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| PL101948B1 (pl) | 1979-02-28 |
| SU625621A3 (ru) | 1978-09-25 |
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Legal Events
| Date | Code | Title | Description |
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| PL | Patent ceased | ||
| PL | Patent ceased |