EP0116882A2 - Trenn- und Schmiermittel in fester Form - Google Patents

Trenn- und Schmiermittel in fester Form Download PDF

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Publication number
EP0116882A2
EP0116882A2 EP84101118A EP84101118A EP0116882A2 EP 0116882 A2 EP0116882 A2 EP 0116882A2 EP 84101118 A EP84101118 A EP 84101118A EP 84101118 A EP84101118 A EP 84101118A EP 0116882 A2 EP0116882 A2 EP 0116882A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
agent
release agent
lubricant according
release
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.)
Granted
Application number
EP84101118A
Other languages
English (en)
French (fr)
Other versions
EP0116882B1 (de
EP0116882A3 (en
Inventor
Jacques Dr. Périard
Alain Dr. Cron
Francis Dr. Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lonza AG
Original Assignee
Lonza AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lonza AG filed Critical Lonza AG
Priority to AT84101118T priority Critical patent/ATE49018T1/de
Publication of EP0116882A2 publication Critical patent/EP0116882A2/de
Publication of EP0116882A3 publication Critical patent/EP0116882A3/de
Application granted granted Critical
Publication of EP0116882B1 publication Critical patent/EP0116882B1/de
Expired legal-status Critical Current

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239—Lubricating
    • B21B45/0245—Lubricating devices
    • B21B45/0263—Lubricating devices using solid lubricants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/04—Cooling or lubricating mandrels during operation
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    • C10M2201/04—Elements
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    • C10N2040/40—Generators or electric motors in oil or gas winning field
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2040/42—Flashing oils or marking oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2040/44—Super vacuum or supercritical use
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    • C10N2040/50—Medical uses

Definitions

  • the invention relates to a release and lubricant in solid form for hot metal deformation, in particular for hot plate or profile rolling and, for example, also as mandrel lubricant in the manufacture of seamless pipes.
  • glasses, salts and laminar lubricants based on graphite or aqueous emulsions with synthetic, surface-active emulsions with synthetic, surface-active agents as cutting and lubricants for non-cutting metal processing. Except for the laminar, graphite-based lubricants, all other means for hot plate rolling are not applicable. Glasses or vitreous lubricants cannot be used because they can hardly be removed from the surface of the processed pieces. Salts as lubricants in the form of aqueous solutions lead to high corrosion on the workpiece and machines. The use of lubricating and cooling liquids requires an additional device for their cooling and cleaning so that the liquid can be circulated.
  • the object of the invention was to propose a solid, softening at high temperatures to melting lubricant, which does not have the disadvantages mentioned and beyond the hot plate and profile rollers also for other applications, such as the lubrication of mandrels or mandrel bars in the manufacture seamless pipes can be used on, for example, continental or civil roads.
  • the release agent and lubricant according to the invention accordingly contains at least one thermoplastic polymer and / or copolymer and a lubricant for plastics.
  • additives can, according to the An Crumissen to the separation - and lubricant can be provided.
  • Such additives can be a solid lubricant and / or a wetting agent and / or an adhesion promoter and / or a surface modification agent and / or a plasticizer and / or fibers and / or clay.
  • the separating and lubricating agent expediently contains two thermoplastic polymers and / or copolymers.
  • thermoplastic polymers and / or copolymers polyolefins, vinyl resins, acrylic and methacrylic resins, polyesters, polyamides, thermoplastic polyurethanes, polyoxymethylene, polyoxyethylene, polyoxypropylene, polycarbonates, foliaretherimides, polyphenylene oxides and sulfides, thermoplastic cellulose derivatives or hydrocarbon resins in amounts of 1 to 90% by weight . - % are used.
  • thermoplastic polymers and / or copolymers can have the same molecular structure but different chain lengths.
  • examples include polyethylene, coumarone indene resins, hydrocarbon resins.
  • suitable mixtures of two different polymers and / or copolymers are, for example, polyethylene with polyisobutylene and polymethyl methacrylates with polymethacrylate. These polymers are mutually incompatible, a mixture of polymers or copolymers which are to be classified as mutually compatible, for example polystyrene, has proven to be particularly advantageous 2,6-dimethyl-1,4-phenylene oxide.
  • the release agent and lubricant contains a lubricant for plastics.
  • Fatty acids, fatty alcohols, fatty amides, soaps, waxes or polyethylene waxes or silicone oil can be used as lubricants.
  • an adhesion promoter and / or plasticizer for the polymers or copolymers is said to improve the adhesion to metal surfaces and to lower the softening temperature of the mixture.
  • They are generally rosin derivatives, terpene resins or hydrocarbon resins, coumarone-indene resins and the plasticizers commonly used in thermoplastics, as listed, for example, in "Modern Plastic Encyclopedia (1983)".
  • the separating and lubricating agent also advantageously contains a solid lubricant.
  • a solid lubricant Polytetrafluoroethylene, calcium fluoride, molybdenum disulfide, boron nitride and in particular graphite are preferred. The effect of such lubricants is known per se.
  • a wetting agent can be added to disperse the solid lubricant in the release agent and lubricant and to increase the adhesion to the metal.
  • the wetting agent causes a superficial plasticization ("Rehbinder effect", PA Rehbinder, ED Scukin, Les phenomenes de surface dans la deformation et la fracture des solides - Seminaire de Mecanique des Surfaces ISMCM - CNRS (1971)) of the metal, which is caused by friction leads to low friction coefficients and, due to the smoothing of the surface, low, even wear of the friction partners.
  • a surface modification agent preferably from the series of the silanes or titanates, can be used.
  • aminopropyltri- ethoxy silane or isopropyl triisostearyl titanate may be called.
  • plastic inorganic raw materials from the series of clay minerals, such as kaolins, clays, bentonites, talc or verminculite, it is achieved that the plasticity and the coefficient of friction of the release agent and lubricant can be influenced.
  • the mixture of the components according to the invention must result in a release agent and lubricant which has a solid form at normal temperature. If the separation and Lubricants, for example, heated and softened when they are used in hot plate rolling by contact with a hot roller or in the manufacture of seamless tubes on a hot mandrel, can be homogeneous in composition and thickness by rubbing and / or melting on the roller or on the mandrel Form a film.
  • this film is waterproof, so that the considerable amounts of cooling water which flow over the rollers or the mandrel do not impair the film.
  • the film can be easily transferred from one roller to the other.
  • the solid lubricant ensures that even under these difficult conditions, such as high pressures, high temperatures and friction between the tool and the workpiece, there are no excessive loads and tensions.
  • the separating and lubricating agent is produced by mixing the components in the heat, for example a kneader, and pressing the individual components into the desired shape. Processing can also be carried out in an extruder and using injection molding technology.
  • the finished elements are solid at normal temperature and have a softening point of 20 to 250 ° C.
  • the Shore D hardness is 20 to 50 for elements with a low softening point and 50 to 80 for elements with a high softening point.
  • the melting point is 30 to 300 ° C.
  • the cold compressive strength should be 5 to 500 kg / cm 2 .
  • the release agent and lubricant according to the invention it is achieved that due to the good separating and lubricating effect, the power to be used, for example for rolling sheets and profiles, drops considerably.
  • the quality of the surface of the processed workpieces is also improved and, for example, has a low roughness.
  • the separating and lubricating agent also leads to greater operational safety, since the lubricating effect can be controlled by the choice of additives and thus an excessively good lubricating effect, which leads to slipping sheets, can be avoided.
  • the film thickness can also be controlled well and films of 50 to 200 microns thick can be applied. In many cases, an average film thickness of 1 to 2 microns is sufficient for the agent to have a high lubricating capacity. Compared to the known oil-based lubricants, there is no smoke, smoke or environmental pollution.
  • This mixture gives a transfer film, lubricating at a temperature of 80 to 90 o C.
  • This mixture gives a transfer film, lubricating between 50 and 100 ° C.
  • This mixture gives a transfer film at a temperature of 100 to 150 ° C.
  • This mixture gives a transfer film at a temperature of 50 to 70 ° C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Fats And Perfumes (AREA)

Abstract

Trenn- und Schmiermittel in fester Form zur Warmmetallverarbeitung, insbesondere zum Warmblech- und Profilwalzen oder zur Schmierung von Dornstangen bei der Herstellung nahtloser Rohre. Das fest Trenn- und Schmiermittel enthält im wesentlichen ein thermoplastisches Polymer und/oder Copolymer und ein Gleitmittel für Kunststoffe. Weitere Zusätze, wie Festschmierstoffe, sind möglich. Der Erweichungspunkt liegt bei 20 bis 250°C, der Schmelzpunkt bei 30 bis 300°C und die Shore-D-Härte bei 20°C bei 20 bis 80.

Description

  • Die Erfindung betrifft ein Trenn- und Schmiermittel in fester Form zur Warmmetallverformung, insbesondere zum Warmblech- oder Profilwalzen und beispielsweise auch als Dornschmiermittel bei der Herstellung von nahtlosen Rohren.
  • Es ist bekannt, für die spanlose Metallverarbeitung Gläser, Salze und laminare Schmiermittel auf Graphit-Basis oder wässrige Emulsionen mit synthetischen, oberflächenaktiven Emulsionen mit synthetischen, oberflächenaktiven Mitteln als Trenn- und Schmiermittel anzuwenden. Ausgenommen die laminaren, auf Graphit basierenden Schmiermittel sind alle anderen Mittel für das Warmblechwalzen nicht anwendbar. Gläser oder glasartige Schmiermittel können nicht angewendet werden, da diese kaum mehr von der Oberfläche der bearbeiteten Stücke zu lösen sind. Salze als Schmiermittel in Form wäßriger Lösungen führen zu hoher Korrosion an Werkstück und Maschinen. Die Anwendung von Schmier- und Kühlflüssigkeiten verlangt eine zusätzliche Vorrichtung für deren Kühlung und Reinigung, damit die Flüssigkeit im Kreislauf geführt werden kann.
  • Um diese der Fachwelt bekannten Nachteile zu umgehen, wurde in "Steel in the USSR", Februar 1974, Seiten 153 und 154 und Chemical Abstracts Vol. 81, 1974, 109708k, ein Festschmierstoff in Form von Briquettes beschrieben. Das feste, briquettenförmige Schmiermittel auf Basis von Graphit enthält auch Tone und oberflächenaktive Zusätze und wird durch eine Vorrichtung gegen die Arbeitswalzen eines Walzwerkes für Stahl gepresst, wobei ein dünner Schmiermittelfilm auf die Arbeitswalzen aufgetragen wird. Dem Schmiermittel haften aber immer noch Nachteile an, wie sie von Meleshko, Tubol'tsev und Adamskii in "Steel in the USSR", Oktober 1979, Seiten 515-519, angegeben sind. Gemäß Seite 516, linke Spalte, war es unmöglich, durch Aufdrücken der Schmiermittel-Briquettes auf die Walzen einen feinverteilten, gleichmäßigen Schmiermittelfilm über die ganze Breite und den Umfang der Walze zu erhalten. Das führte zu ungleichmäßiger Oberflächenbelastung der Walzen und Bleche und zur Destabilisierung des Walzprozesses.
  • Aufgabe der Erfindung war es, ein an sich festes, bei erhöhten Temperaturen erweichendes bis schmelzendes Schmiermittel vorzuschlagen, das die genannten Nachteile nicht aufweist und über das Warmblech- und die Profilwalzen hinaus auch für andere Anwendungen, wie das Schmieren von Dornen oder Dornstangen bei der Herstellung nahtloser Rohre auf beispielsweise Konti- oder Pilgerstraßen angewendet werden kann.
  • Erfindungsgemäß wurde dies mit einem Trenn- und Schmiermittel in fester Form zur Warmmetallverformung, insbesondere zum Warmblech- oder Profilwalzen erreicht, das dadurch gekennzeichnet ist, daß der Erweichungspunkt bei 20 bis 250°C liegt, der Schmelzpunkt bei 30 bis 300°C und die Shore-D-Härte bei 20°C 20 bis 80 beträgt, wobei das Mittel mindestens ein thermoplastisches Polymer und/oder Copolymer und ein Gleitmittel für Kunststoffe enthält. Das erfindungsgemäße Trenn- und Schmiermittel enthält demnach mindestens ein thermoplastisches Polymer und/oder Copolymer und ein Gleitmittel für Kunststoffe.
  • Weitere Zusätze können, entsprechend den Anfordernissen an das Trenn- und Schmiermittel, vorgesehen werden. Solche Zusätze können ein Festschmierstoff und/oder ein Netzmittel und/oder ein Haftungsvermittler und/oder ein Oberflächenmodifikationsmittel und/oder ein Weichmacher und/oder Fasern und/oder Ton sein.
  • Zweckmäßig enthält das Trenn- und Schmiermittel zwei thermoplastische Polymere und/oder Copolymere.
  • Als thermoplastische Polymere und/oder Copolymere können Polyolefine, Vinylharze, Acryl- und Methacrylharze, Polyester, Polyamide, thermoplastische Polyurethane, Polyoxymethylen, Polyoxyäthylen, Polyoxypropylen, Polycarbonate, Folyätherimide, Polyphenylenoxide und -sulfide, thermoplastische Cellulosederivate oder Kohlenwasserstoffharze in Mengen von 1 bis 90 Gew.-% eingesetzt werden.
  • Werden nach einer zweckmäßigen Ausführungsform zwei thermoplastische Polymere und/oder Copolymere eingesetzt, so kann das Polymer das an sich gleiche molekulare-Gerüst aber unterschiedliche Kettenlängen aufweisen. Beispiele dafür sind Polyäthylene, Cumaron-Inden-Harze, Kohlenwasserstoffharze.
  • Weitere geeignete Mischungen zweier verschiedener Polymere und/oder Copolymere sind beispielsweise Polyäthylen mit Polyisobutylen und Polymethylmethacrylate mit Polymethacrylat. Diese Polymere sind an sich gegenseitig unverträglich, als besonders vorteilhaft hat sich eine Mischung von Polymeren oder Copolymeren erwiesen, die als gegenseitig verträglich einzustufen sind, beispielsweise Polystyrol mit 2,6-Dimethyl-1,4-phenylenoxid.
  • Das Trenn- und Schmiermittel enthält erfindungsgemäß ein Gleitmittel für Kunststoffe. Als Gleitmittel können Fettsäuren, Fettalkohole, Fettamide, Seifen, Wachse oder Polyäthylen-Wachse oder Silikanöl angewendet werden.
  • Der Zusatz eines Haftungsvermittlers und/oder Weichmachers für die Polymere oder Copolymere soll die Haftung auf Metallflächen verbessern und die Erweichungstemperatur der Mischung erniedrigen. Es sind in der Regel Kollophoniumderivate, Terpenharze oder Kohlenwasserstoffharze, Cumaron-Inden-Harze und die bei Thermoplasten üblicherweise verwendeten Weichmacher, wie sie beispielsweise in "Modern Plastic Encyclopedia (1983)" aufgeführt sind.
  • Das Trenn- und Schmiermittel enthält zudem vorteilhaft einen Festschmierstoff. Bevorzugt sind Polytetrafluoräthylen, Calciumfluorid, Molybdändisulfid, Bornitrid und insbesondere Graphit. Die Wirkung derartiger Schmierstoffe ist an sich bekannt.
  • Um den Festschmierstoff im Trenn- und Schmiermittel zu dispergieren und die Adhäsion auf dem Metall zu erhöhen, kann ein Netzmittel zugefügt werden. Das Netzmittel bewirkt eine oberflächliche Plastifizierung ("Rehbinder-Effekt", P.A. Rehbinder, E.D. Scukin, Les phenomenes de surface dans la deformation et la fracture des solides - Seminaire de Mecanique des Surfaces ISMCM - CNRS (1971)) des Metalls, die bei Reibung zu niedrigen Reibungskoeffizienten und durch Glättung der Oberfläche zu niedrigem, gleichmäßigem Verschleiß der Reibpartner führt.
  • Aus dem gleichen Grund kann ein Oberflächenmodifikationsmittel, bevorzugt aus der Reihe der Silane oder Titanate angewendet werden. Als Beispiele können Aminopropyltri- äthoxysilan oder Isopropyltriisostearyltitanat genannt werden.
  • Um aus dem Trenn- und Schmiermittel, Formkörper mit einer erhöhten mechanischen Festigkeit herstellen zu können, kann es vorteilhaft sein, Fasern aus der Reihe der Polyäthylene, Polypropylene, Polyamide, Polyacrylnitrile, Polyester, aus Kohlenstoff oder Glas, zuzumischen.
  • Mit einem möglichen Zusatz von plastischen anorganischen Rohstoffen aus der Reihe der Tonmineralien, wie Kaolinen, Tonen, Bentoniten, Talk oder Verminculit, wird erreicht, daß die Plastizität und der Reibungskoeffizient des Trenn-und Schmiermittels beeinflußt werden kann.
  • Ein Trenn- und Schmiermittel, beispielsweise für das Warmblech- und Profilwalzen, kann folgende Mengenanteile er einzelnen Komponenten aufweisen:
    • 1 bis 90 Gew.-% Polymer und/oder Copolymer und 1 bis 70 Gew.-% Gleitmittel, bis zu 90 Gew.-% Festschmierstoff, bis zu 10 Gew.-% Netzmittel, bis zu 70 Gew.-% Haftungsvermittler, bis zu 30 Gew.-% Weichmacher, bis zu 2 Gew.-% Oberflächenmodifikationsmittel, bis zu 20 Gew.-% Ton und bis zu 5 Gew.-% Fasern.
  • Für die Anwendung als Dornschmiermittel kann die Zusammensetzung des Trenn- und Schmiermittels in den folgenden Mengenanteilen zweckmäßig sein:
    • 30 bis 70 Gew.-% Polymer und/oder Copolymer, 1 bis 50 Gew.-% Gleitmittel, 20 bis 50 Gew.-% Haftungsvermittler, 10 bis 90 Gew.-% Festschmierstoff, bis zu 7 Gew.-% Netzmittel, bis zu 2 Gew.-% Oberflächenmodifikationsmittel und bis zu 5 Gew.-% Fasern.
  • Die Mischung der Komponenten nach der Erfindung muß ein Trenn- und Schmiermittel, das bei Normaltemperatur eine feste Form aufweist, ergeben. Wenn sich das Trenn- und Schmiermittel beispielsweise bei der Anwendung beim Warmblechwalzen durch den Kontakt mit einer heißen Walze oder bei der Herstellung nahtloser Rohre an einem heißen Dorn erwärmt und dabei erweicht, vermag sich durch Abreiben und/oder Abschmelzen auf der Walze oder auf dem Dorn ein in Zusammensetzung und Dicke homogener Film bilden.
  • Dieser Film ist einerseits wasserfest, so daß die erheblichen Mengen Kühlwasser, welche über die Walzen oder den Dorn fließen, den Film nicht beeinträchtigen. Andererseits läßt sich der Film leicht von einer Walze auf die andere übertragen. So ist es beispielsweise beim Warmblech- oder Profilwalzen möglich, das Trenn- und Schmiermittel auf die Druckwalzen aufzutragen, die ihrerseits das Trenn- und Schmiermittel auf die Arbeitswalzen übertragen, wobei immer ein in Zusammensetzung und Dicke homogener Film erhalten bleibt.
  • Bei der Anwendung des Trenn- und Schmiermittels, insbesondere als Dornschmiermittel, stellt der Festschmierstoff sicher, daß auch unter diesen erschwerten Bedingungen, wie hohen Drücken, hohen Temperaturen und Friktion zwischen Werkzeug und Werkstück keine übermäßigen Belastungen und Spannungen auftreten.
  • Der Trenn- und Schmierstoff wird hergestellt durch Mischen der Bestandteile in der Wärme, beispielsweise einem Kneter und Verpressen der einzelnen Bestandteile in die gewünschte Form. Die Verarbeitung kann auch in einem Extruder und mit Spritzgußtechnik vorgenommen werden.
  • Die fertigen Elemente sind bei Normaltemperatur fest und weisen einen Erweichungspunkt von 20 bis 250°C auf. Die Shore-D-Härte beträgt 20 bis 50 für Elemente mit tiefem Erweichungspunkt und 50 bis 80 für Elemente mit hohem Erweichungspunkt.
  • Der Schmelzpunkt liegt bei 30 bis 300°C. Die Kaltdruckfestigkeit soll 5 bis 500 kg/cm2 betragen.
  • Mit dem erfindungsgemäßen Trenn- und Schmiermittel wird erreicht, daß durch den gut trennenden und schmierenden Effekt die aufzuwendende Leistung, beispielsweise um Bleche und Profile zu walzen, erheblich sinkt. Die Qualität der Oberfläche der verarbeiteten Werkstücke ist ebenfalls verbessert und weist beispielsweise eine geringe Rauhigkeit auf. Das Trenn- und Schmiermittel führt auch zu einer größeren Betriebssicherheit, da sich der Schmiereffekt durch die Wahl der Zusätze steuern läßt und sich damit ein zu guter Schmiereffekt, der zu durchrutschenden Blechen führt, vermeiden läßt.
  • Die Filmdicke läßt sich ebenfalls gut steuern und es lassen sich Filme von 50 bis 200 Mikron Dicke auftragen. Das das Mittel eine hohe Schmierleistung aufweist, ist eine Filmdicke von durchschnittlich 1 bis 2 Mikron in vielen Fällen schon ausreichend. Gegenüber den bekannten Schmiermitteln auf Öl-Basis entfällt die Qualm- und Rauchbildung und die Umweltbelastung.
    • Beispiel 1
  • Figure imgb0001
    Diese Mischung gibt einen Übertragungsfilm, schmierend bei einer Temperatur von 80 bis 90oC.
    • Beispiel 2
  • Figure imgb0002
    Figure imgb0003
  • Diese Mischung gibt einen Übertragungsfilm, schmierend zwischen 50 und 100°C.
    • Beispiel 3
  • Figure imgb0004
    Diese Mischung gibt einen Übertragungsfilm bei einer Temperatur von 100 bis 150°C.
    • Beispiel 4
  • Figure imgb0005
    Diese Mischung gibt einen Übertragungsfilm bei einer Temperatur von 50 bis 70°C.
  • Die Bezugszeichen bedeuten jeweils die Wirkung des Bestandteils als:
    • (1) thermoplastisches Polymer
    • (3) Haftungsvermittler
    • (4) Gleitmittel für Kunststoffe
    • (5) Netzmittel auf Fettsäurebasis
    • (6) Oberflächenmodifikationsmittel
    • (7) Festschmierstoff
    • (9) Ton

Claims (14)

1. Trenn- und Schmiermittel in fester Form zur Warmmetallverformung, insbesondere zum Warmblech- oder Profilwalzen, dadurch gekennzeichnet, dass der Erweichungspunkt bei 20 bis 250°C liegt, der Schmelzpunkt bei 30 bis 300°C und die 5 Shore-D-Härte bei 20°C 20 bis 80 beträgt, wobei das Mittel mindestens ein thermoplastisches Polymer und/oder Copolymer und ein Gleitmittel für Kunststoffe enthält.
2. Trenn- und Schmiermittel nach Anspruch 1, dadurch gekennzeichnet, dass das Mittel einen Festschmierstoff enthält.
3. Trenn- und Schmiermittel nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das Mittel ein Netzmittel enthält.
4. Trenn- und Schmiermittel nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass das Mittel einen Haftungsvermittler enthält.
5. Trenn- und Schmiermittel nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass das Mittel zwei thermoplastische Polymere und/oder Copolymere enthält.
6. Trenn- und.Schmiermittel nach Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass das Mittel ein Gleitmittel für Kunststoffe aus der Reihe der Fettsäuren, Fettalkohole, Fettamide, Seifen, Wachse, Polyäthylen-Wachse oder Silikon-Oel enthält.
7. Trenn- und Schmiermittel nach Ansprüchen 1 bis 6, dadurch gekennzeichnet, dass das Mittel einen Weichmacher für die Polymere oder Copolymere enthält.
8. Trenn- und Schmiermittel nach Ansprüchen 1 bis 7, dadurch gekennzeichnet, dass das Mittel ein Oberflächenmodifikationsmittel, zweckmässig ein Silan oder Titanat, enthält.
9. Trenn- und Schmiermittel nach Ansprüchen 1 bis 8, dadurch gekennzeichnet, dass das Mittel Fasern aus der Reihe der Polyäthylene, Polypropylene, Polyamide, Polyacrylnitrile, Polyester, aus Kohlenstoff oder Glas enthält.
10. Trenn- und Schmiermittel nach Ansprüchen 1 bis 9, dadurch gekennzeichnet, dass das Mittel Ton enthält.
11. Trenn- und Schmiermittel nach Ansprüchen 1 bis 10, dadurch gekennzeichnet, dass als Festschmierstoff fluorierte Kohlenwasserstoffe, zweckmässig Polytetrafluoräthylen, Calciumfluorid, Bornitrid, Molybdändisulfid und vorzugs- 5 weise Graphit angewendet wird.
12. Trenn- und Schmiermittel nach Ansprüchen 1 bis 11, dadurch gekennzeichnet, dass das Polymer und/oder Copolymer in Mengen von 1 bis 90 Gew.% und das Gleitmittel in Mengen von 1 bis 70 Gew.% enthalten ist.
13. Trenn- und Schmiermittel nach Ansprüchen 1 bis 11, dadurch gekennzeichnet, dass das Polymer und/oder Copolymer in Mengen von 30 bis 70 Gew.% und das Gleitmittel in Mengen von 1 bis 50 Gew.% enthalten ist.
14. Trenn- und Schmiermittel nach Ansprüchen 1 bis 13, dadurch gekennzeichnet, dass der Festschmierstoff in Mengen bis 90 Gew.% enthalten ist.
EP84101118A 1983-02-18 1984-02-03 Trenn- und Schmiermittel in fester Form Expired EP0116882B1 (de)

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FR2601686A1 (fr) * 1986-07-17 1988-01-22 Mitsui Toatsu Chemicals Lubrifiant
EP0369007A4 (en) * 1987-03-10 1991-09-04 Nippon Kokan Kabushiki Kaisha Lubricating method for hot rolling of high-silicon steel
EP0369007A1 (de) * 1987-03-10 1990-05-23 Nippon Kokan Kabushiki Kaisha Schmierungsverfahren für das heisslaminieren von stahl mit hohem siliziumgehalt
GB2227022B (en) * 1989-01-13 1992-11-04 Hanano Commercial Co Ltd Die-casting powdery mould releasing agent
DE3917726A1 (de) * 1989-01-13 1990-07-19 Hanano Commercial Co Ltd Formentrennmittel fuer druckgussverfahren
GB2227022A (en) * 1989-01-13 1990-07-18 Hanano Commercial Co Ltd Die-casting powdery mould releasing agent
EP0403306A1 (de) * 1989-06-16 1990-12-19 Castrol Industrial Inc. Trägerfreies Formungsschmiermittel und dessen Verwendung
EP0468278A1 (de) * 1990-07-12 1992-01-29 DAIDO MACHINERY, Ltd. Schmiedeschmiermittel und Verfahren zur Herstellung einer Beschichtung aus Schmiermittel auf der Oberfläche eines linearen Materials
EP0469906A1 (de) * 1990-08-02 1992-02-05 Oiles Corporation Festes Schmiermittel und in dieses eingefügt ein festes Schmiermittel enthaltendes Gleitbauteil
EP0507449A1 (de) * 1991-03-04 1992-10-07 Castrol Ind Inc Trägerfreies Metallbearbeitungsschmiermittel und Verfahren zu seiner Herstellung und Verwendung.
CN100425681C (zh) * 2005-09-28 2008-10-15 中国石油化工股份有限公司 含油分散性粘土抗磨防滑剂的热轧油组合物
CN100443576C (zh) * 2005-09-28 2008-12-17 中国石油化工股份有限公司 由水分散性粘土制备的热轧油组合物
WO2012022284A3 (de) * 2010-06-28 2012-06-28 Sms Meer Gmbh Verfahren zum warmwalzen metallischer hohlkörper sowie entsprechendes warmwalzwerk
US10166583B2 (en) 2010-06-28 2019-01-01 Sms Group Gmbh Process for hot-rolling metallic hollow bodies and corresponding hot-rolling mill

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NO840596L (no) 1984-08-20
JPS59157189A (ja) 1984-09-06
CA1210750A (en) 1986-09-02
ZA84247B (en) 1984-09-26
MX160923A (es) 1990-06-19
ES529809A0 (es) 1985-02-01
DE3480852D1 (de) 1990-02-01
JPH0316998B2 (de) 1991-03-06
US4575430A (en) 1986-03-11
ATE49018T1 (de) 1990-01-15
BR8400703A (pt) 1984-09-25
EP0116882B1 (de) 1989-12-27
EP0116882A3 (en) 1986-07-09
ES8503025A1 (es) 1985-02-01
NO164251C (no) 1990-09-12

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