CH669603A5 - - Google Patents
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- Publication number
- CH669603A5 CH669603A5 CH3800/86A CH380086A CH669603A5 CH 669603 A5 CH669603 A5 CH 669603A5 CH 3800/86 A CH3800/86 A CH 3800/86A CH 380086 A CH380086 A CH 380086A CH 669603 A5 CH669603 A5 CH 669603A5
- Authority
- CH
- Switzerland
- Prior art keywords
- lubricant
- styrene
- binder
- weight
- solids content
- Prior art date
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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
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
- C10M103/04—Metals; Alloys
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
- C10M103/06—Metal compounds
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
- C10M107/12—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing aromatic monomer, e.g. styrene
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
- C10M107/14—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing conjugated diens
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- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/02—Carbon; Graphite
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- C10M125/18—Compounds containing halogen
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- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
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- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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Description
BESCHREIBUNG
Die Erfindung betrifft einen Schmierstoff für die Verwendung bei der spanlosen Verformung von Stahl bei hohen Temperaturen, enthaltend einen Festschmierstoff, einen Binder und ein Verdik-kungsmittel.
Es ist bekannt, Schmierstoffe, enthaltend beispielsweise Graphit, Alkylenpolymerisate oder -mischpolymerisate und ein Dispergiermittel oder Filmstabilisator für die spanlose Verformung von Metallen, insbesondere zur Schmierung des Domes, bei der Herstellung von nahtlosen Rohren einzusetzen (DE-PS 24 50 716). Derartige Schmierstoffe müssen, gerade wenn sie in sogenannten MPM (multiple pipe mills)-Strassen eingesetzt werden, einer Vielzahl von Anforderungen gerecht werden. So muss der Schmierstoff leicht auftragbar sein, was sich wirtschaftlich nur mit Hilfe einer wässrigen Dispersion bewerkstelligen lässt, der Schmierstoff muss nach dem Entfernen des Trägers, also des Wassers, als wasserfester, gleichmässig dicker Film zurückbleiben, und dieser Film muss bis zu hohen Temperaturen und Drücken eine hohe mechanische Stabilität bei homogener Verteilung der Festschmierstoffpartikel aufweisen.
Ein wesentlicher Anteil an der Erfüllung dieser Anforderungen liegt beim Binder. Als Binder wurden in der DE-PS 24 50 716 u.a. genannt: Butadien, und ferner Styrol und Styrol mit Copolymeren.
Diese bekannten Binder vermochten aber nicht alle Anforderungen, wie sie in zunehmendem Masse an derartige Schmierstoffe gestellt werden, zu erfüllen. Butadien als Binder war zu weich, Styrol wiederum vermochte, auch nicht mit den gängigen Copolymeren, einen optimalen Elm auszubilden. Styrol-Buta-dien-Copolymere wurden auch in der EP-PS 0 164 637 beschrieben, als Bestandteil eines Hochtemperaturschmierstoffes. Diese Formulation benötigt aber eine erhebliche Menge eines anorganischen Salzgemisches, das wiederum nachteilige Wirkungen, beispielsweise in MPM-Strassen, bezüglich einer schlechten Wasserbeständigkeit, zeigt.
Aufgabe vorliegender Erfindung ist es, einen Schmierstoff vorzuschlagen, der die genannten Nachteile nicht aufweist.
Erfindungsgemäss wird das mit einem Schmierstoff, enthaltend als Binder einen carboxylierten Styrol-Butadienlatex,
erreicht.
Vorzugsweise wird als Binder ein carboxylierter Styrol-Butadienlatex mit einem Styrolgehalt von mehr als 50 Prozent Styrol, vorzugsweise 70 bis 80 Prozent Styrol, eingesetzt.
In der Regel wird der Binder als wässrige Dispersion mit einem Feststoffgehalt von 40 bis 60 Gew.% zu den übrigen Komponenten des Schmierstoffes zugegeben.
Das Dispergiermittel, im vorliegenden Fall im wesentlichen Wasser, muss der Anmachflüssigkeit, ebenfalls im wesentlichen Wasser, der fertigen Schmierstoffdispersion zugerechnet werden.
Die Zusammensetzung des Schmierstoffes enthält zweckmässig Mengenanteile von 50 bis 80 Gew.% eines Festschmierstoffes oder Festschmierstoffgemisches, vorzugsweise Graphit, 19,8 bis 50 Gew.% des Binders, berechnet auf seine Trockenmasse, und 0,2 bis 5,0 Gew.% Verdickungsmittel.
Ferner kann es sich als vorteilhaft erweisen, Zusätze wie Netzmittel, Emulgatoren, Biocide und Antioxidantien der Zusammensetzung beizusetzen. Deren einzelne Mengenanteile richten sich nach den Erzeugervorschriften oder nach Vorversuchen und betragen gewöhnlich bis zu 2 Gew.%.
Die verwendeten einzelnen Bestandteile, die den erfmdungs-gemässen Schmierstoff ergeben, lassen sich aus den Reihen nachfolgend genannter Produktegruppen auswählen.
Als Festschmierstoff können Graphit, M0S2 (Molybdändisul-fid), CaF2 oder BN eingesetzt werden.
Von den Festschmierstoffen führt Graphit zu besonders guten Ergebnissen. Aus der Reihe der Graphite werden solche mit hoher Reinheit, beispielsweise über 96 Prozent, und einer durchschnittlichen Korngrösse von nicht mehr als 300 (im bevorzugt. Die besten Ergebnisse lassen sich mit einem Graphit von 99,5 Prozent Reinheit und einer durchschnittlichen Korngrösse von 100 (im erzielen.
Der Schmierstoff soll zum Gebrauch als 10 bis 60 Gew.%ige wässrige Dispersion vorliegen. Die Dispersion weist zweckmässig eine Viskosität von 0,5 bis 15 PaS bei 10 bis 30 °C auf.
Um die Viskosität der Dispersion zu erreichen, wird ein Verdicker oder ein Gemisch von Verdickern angewendet. Aus der Reihe von geeigneten Verdickern sind zum Beispiel wasserlösliche Polysaccharide, Alkylcellulosen, wie Hydroxyalkylcellulose oder Carboxymethylcellulose, Polyvinylalkohole, Polyaciylsäure und deren Derivate, neutralisiert oder nicht neutralisiert, Naturgum-men und deren Derivate (zum Beispiel Guar), Polyvinylpyrroli-don, Polyethylenoxide, gegebenenfalls Mineralien, wie Tone, Montmorillonit, modifizierter Montmorillonit, Bentonit und Füllstoffe wie Naturpech oder Naturasphalt.
Wie erwähnt wird der Schmierstoff in Form einer wässrigen Dispersion angewendet. Die wässrige Dispersion des Schmierstoffes nach Patentanspruch 1 kann auf das Werkzeug, das Temperaturen von 80 bis über 350 °C aufweisen kann, aufgetragen werden. Bei der Berührung der heissen Oberfläche verdampft der wässrige Träger der Dispersion, und es bildet sich ein Film des Schmierstoffes in gleichmässiger Schichtdicke. Der Film des Schmierstoffes ist in homogener wasserfester Form und wird auch von grossen Kühlmittelmengen, die über das Werkzeug fliessen, nicht mehr abgewaschen oder angequollen.
Der erfindungsgemässe Schmierstoff eignet sich deshalb für die Schmierung von Werkzeug, zum Beispiel Dorn, Dornstange oder Matrize, bei deren Einsatz zur Bearbeitung von Werkstük-ken, beispielsweise Luppen oder Rohren, insbesondere bei der Warmverformung von Stahl und dem Walzen von Luppen zu nahtlosen Rohren in sogenannten MPM-Strassen, gegebenenfalls
5
10
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20
25
30
35
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3
669 603
auch in Konti-Strassen, Stossbankanlagen, Stangenpressen oder Anstauchpressen.
Die Forderungen, die an den vorliegenden Schmierstoff beim Einsatz in MPM-Strassen gestellt werden, können damit vollum-fanglich erfüllt werden. Bei der vorzugsweisen Anwendungs- und Verarbeitungstemperatur von 80 bis 350 °C bildet sich der angestrebte Film in einer Dicke von 10 bis 100 [im aus. Der Film ist wasserfest, das heisst die nachfolgende Kühlung mit Wasser beeinflusst den Film in keiner Weise. Bei einer Dorntemperatur von 150 bis 250 °C hat der Film gute mechanische Eigenschaften (zum Beispiel eine Ritzhärte von 6,5 N mit der Ritzhärteprüfung nach Sikkens). Die Temperaturbeständigkeit des Schmierstoffes ist bis zu 350 0 C ohne weiteres gewährleistet.
Diese Werte konnten mit den bisher beschriebenen Schmierstoffen gleichzeitig nicht erreicht werden, wie das auch aus den nachfolgend beschriebenen Vergleichsbeispielen ersichtlich ist.
Beispiel 1 nach DE-PS 24 50 716
Formulation: Feststoffgehalt 30%, Wasser 70%
Feststoffe:
74,3% Graphit
23,2% SBR Latex
(34% Styrol, berechnet auf Feststoffgehalt des Latexes) 2,0% Alkylcellulose 0,5% Natriumsilicat Viscosität: 3,1 PaS, pH = 9,2
Beispiel 2 nach EP-PS 0 164 637 Formulation: Feststoffgehalt 30%, Wasser 70%
Feststoffe:
54,0% Graphit 5 11,0% Polyphosphat, unlöslich 5,0% Borax 10,0% Natriumsilicat 18,0% Polystyrol 2,0% Alkylcellulose io Viskosität: 2,0 PaS, pH =11,0
Beispiel 3 nach der Erfindung Formulation: Feststoffgehalt 45%, Wasser 55%
Feststoffe:
15 74,2% Graphit 24,3% SBR Latex carboxyliert
(75% Styrol, berechnet auf Feststoffgehalt des Latexes) 1,0% Ton 0,5% Antioxidant 20 Viscosität: 2,8 PaS, pH = 8
Bei den Beispielen 1 bis 3 wurden die Feststoffe und das Wasser als Träger zu Dispersionen verarbeitet und zu Prüfzwecken auf metallische Oberflächen, die den Dorn darstellen, versprüht. Die 25 Messresultate sind aus der Tabelle 1 ersichtlich.
Tabelle 1
Eigenschaften des Schmierstoffilmes _ . _ _
Film- Temperaturen des Domes °C 600 250 250
eigen- bei Raumtemperatur Kohäsion/Haftung gut gut gut Schäften
Wasserbeständigkeit gut schwach sehr gut bei 150-250 °C Ritzhärte (nach Sikkens) schwach gut gut
G
Claims (6)
1. Schmierstoff fur die Verwendung bei der spanlosen Verformung von Stahl bei hohen Temperaturen, enthaltend einen Fest-schmierstoff, einen Binder und ein Verdickungsmittel, dadurch gekennzeichnet, dass der Binder ein carboxylierter Styrol-Buta-dienlatex ist.
2. Schmierstoff nach Patentanspruch 1, dadurch gekennzeichnet, dass der carboxylierte Styrol-Butadienlatex einen Styrolgehalt von mehr als 50 Gew.% Styrol, vorzugsweise 70 bis 80 Gew.% Styrol, enthält.
2
PATENTANSPRÜCHE
3. Schmierstoff nach Patenansprüchen 1 bis 2, dadurch gekennzeichnet, dass der Schmierstoff 50 bis 80 Gew.% Festschmierstoff, vorzugsweise Graphit, 19,8 bis 50 Gew.% des Binders, bezogen auf seine Trockenmasse, und 0,2 bis 5,0 Gew.% Verdickungsmittel enthält.
4. Verfahren zur Herstellung eines Schmierstoffes nach Patentansprüchen 1 und 2, dadurch gekennzeichnet, dass der Binder als wässrige Dispersion mit einem Feststoffgehalt von 40 bis 60 Gew.% zu den übrigen Komponenten des Schmierstoffes zugegeben wird.
5. Verfahren zum Schmieren von Werkzeugen bei der spanlosen Verformung von Stahl bei hohen Temperaturen mittels eines Schmierstoffes nach Patentanspruch 1.
6. Verfahren nach Patentanspruch 5, dadurch gekennzeichnet, dass der Schmierstoff nach Patenansprüchen 2 und 3 als homogene wässrige Dispersion mit einem Feststoffgehalt von 10 bis 60 Gew.% auf das heisse Werkzeug aufgetragen wird, wobei der wässrige Träger der Dispersion verdampft und sich ein homogener wasserfester SchmierstofElm mit hoher mechanischer Festigkeit ausbildet und dann die Kühlung des Werkzeugs und anschliessend die spanlose Verformung eingeleitet wird.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3800/86A CH669603A5 (de) | 1986-09-23 | 1986-09-23 | |
AT87112493T ATE55145T1 (de) | 1986-09-23 | 1987-08-27 | Schmierstoff fuer die spanlose verformung von stahl. |
DE8787112493T DE3764052D1 (de) | 1986-09-23 | 1987-08-27 | Schmierstoff fuer die spanlose verformung von stahl. |
EP87112493A EP0261438B1 (de) | 1986-09-23 | 1987-08-27 | Schmierstoff für die spanlose Verformung von Stahl |
ES87112493T ES2016603B3 (es) | 1986-09-23 | 1987-08-27 | Lubricante para el moldeo de acero sin tensiones internas. |
CN87106375A CN1011515B (zh) | 1986-09-23 | 1987-09-14 | 钢无切屑成型用的润滑剂 |
SU874203328A SU1632373A3 (ru) | 1986-09-23 | 1987-09-16 | Смазочный материал дл гор чей обработки стали давлением |
JP62234678A JPH0830198B2 (ja) | 1986-09-23 | 1987-09-18 | 鋼の無切削加工用潤滑剤 |
AR87308801A AR243593A1 (es) | 1986-09-23 | 1987-09-23 | Lubricante para la conformacion de acero sin arranque de viruta. |
US07/393,064 US5271854A (en) | 1986-09-23 | 1989-08-04 | High temperature lubricant containing carboxylated styrene-butadiene latex |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3800/86A CH669603A5 (de) | 1986-09-23 | 1986-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH669603A5 true CH669603A5 (de) | 1989-03-31 |
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ID=4263721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH3800/86A CH669603A5 (de) | 1986-09-23 | 1986-09-23 |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0261438B1 (de) |
JP (1) | JPH0830198B2 (de) |
CN (1) | CN1011515B (de) |
AR (1) | AR243593A1 (de) |
AT (1) | ATE55145T1 (de) |
CH (1) | CH669603A5 (de) |
DE (1) | DE3764052D1 (de) |
ES (1) | ES2016603B3 (de) |
SU (1) | SU1632373A3 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0747756B2 (ja) * | 1989-08-09 | 1995-05-24 | 日本電装株式会社 | 金属の冷間塑性加工用水系潤滑処理液 |
DE69118601T2 (de) * | 1990-07-12 | 1996-09-19 | Daido Machinery | Schmiedeschmiermittel und Verfahren zur Herstellung einer Beschichtung aus Schmiermittel auf der Oberfläche eines linearen Materials |
EP0554822B1 (de) * | 1992-02-06 | 1999-12-29 | Timcal Ag | Dornschmiermittel für die Herstellung nahtloser Rohre |
AU6360596A (en) * | 1995-07-04 | 1997-02-05 | Timcal A.G. | Lubricant for pass rollers |
AU2001291574A1 (en) * | 2000-09-29 | 2002-04-08 | Kelsan Technologies Corp. | Friction control compositions |
US6759372B2 (en) * | 2002-04-12 | 2004-07-06 | Kelsan Technologies Corp. | Friction control composition with enhanced retentivity |
CN105695076B (zh) * | 2016-02-26 | 2018-09-18 | 常州高特新材料有限公司 | 一种水性金刚线硅片切割液 |
RU2716499C1 (ru) * | 2019-10-03 | 2020-03-12 | Федеральное государственное бюджетное учреждение науки Ордена Трудового Красного Знамени Институт нефтехимического синтеза им. А.В. Топчиева Российской академии наук (ИНХС РАН) | Способ получения биоразлагаемой низкотемпературной консистентной смазки на основе целлюлозы |
CN115679195B (zh) * | 2021-07-30 | 2023-10-17 | 宝山钢铁股份有限公司 | 一种汽车驱动轴用无缝钢管及其制造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2048537A1 (en) * | 1970-10-02 | 1972-04-06 | Chemische Fabrik Budenheim, Rudolf A Oetker, 6501 Budenheim | Lubricants for hot metal - forming - contg mixed inorganic phosphates in polymer binders |
DE2318131A1 (de) * | 1973-04-11 | 1974-10-24 | Hoechst Ag | Wasserklar einstellbare polymerlatices als waessrige kuehlschmiermittel |
US3873458A (en) * | 1973-05-18 | 1975-03-25 | United States Steel Corp | Resin-containing lubricant coatings |
GB1438215A (en) * | 1974-05-08 | 1976-06-03 | Lonz Ltd | High temperature lubricant |
US3925214A (en) * | 1974-05-28 | 1975-12-09 | Chemclean Corp | Hot forming lubricant composition, system and method |
AU499239B2 (en) * | 1974-12-19 | 1979-04-12 | Borg-Warner Chemicals Inc. | Coating composition |
US4544690A (en) * | 1983-07-27 | 1985-10-01 | Reichhold Chemicals, Incorporated | Aqueous rubberized coal tar emulsion |
-
1986
- 1986-09-23 CH CH3800/86A patent/CH669603A5/de not_active IP Right Cessation
-
1987
- 1987-08-27 DE DE8787112493T patent/DE3764052D1/de not_active Expired - Fee Related
- 1987-08-27 ES ES87112493T patent/ES2016603B3/es not_active Expired - Lifetime
- 1987-08-27 EP EP87112493A patent/EP0261438B1/de not_active Expired - Lifetime
- 1987-08-27 AT AT87112493T patent/ATE55145T1/de not_active IP Right Cessation
- 1987-09-14 CN CN87106375A patent/CN1011515B/zh not_active Expired
- 1987-09-16 SU SU874203328A patent/SU1632373A3/ru active
- 1987-09-18 JP JP62234678A patent/JPH0830198B2/ja not_active Expired - Lifetime
- 1987-09-23 AR AR87308801A patent/AR243593A1/es active
Also Published As
Publication number | Publication date |
---|---|
DE3764052D1 (de) | 1990-09-06 |
JPS6389593A (ja) | 1988-04-20 |
JPH0830198B2 (ja) | 1996-03-27 |
EP0261438B1 (de) | 1990-08-01 |
SU1632373A3 (ru) | 1991-02-28 |
AR243593A1 (es) | 1993-08-31 |
CN87106375A (zh) | 1988-04-06 |
EP0261438A3 (en) | 1988-12-07 |
CN1011515B (zh) | 1991-02-06 |
ATE55145T1 (de) | 1990-08-15 |
ES2016603B3 (es) | 1990-11-16 |
EP0261438A2 (de) | 1988-03-30 |
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