EP1444314B1 - Utilisation d'un phosphate alcalin dans un lubrifiant haute température - Google Patents

Utilisation d'un phosphate alcalin dans un lubrifiant haute température Download PDF

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Publication number
EP1444314B1
EP1444314B1 EP02782698A EP02782698A EP1444314B1 EP 1444314 B1 EP1444314 B1 EP 1444314B1 EP 02782698 A EP02782698 A EP 02782698A EP 02782698 A EP02782698 A EP 02782698A EP 1444314 B1 EP1444314 B1 EP 1444314B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
alkali
orthophosphate
temperature
melting temperature
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
EP02782698A
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German (de)
English (en)
Other versions
EP1444314A1 (fr
Inventor
Norbert Aurin
Karl Götzmann
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.)
Chemische Fabrik Budenhiem KG
Original Assignee
Chemische Fabrik Budenhiem KG
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 Chemische Fabrik Budenhiem KG filed Critical Chemische Fabrik Budenhiem KG
Publication of EP1444314A1 publication Critical patent/EP1444314A1/fr
Application granted granted Critical
Publication of EP1444314B1 publication Critical patent/EP1444314B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/06—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
    • 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
    • C10M2201/0853—Phosphorus oxides, acids or salts used as base material
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/06—Groups 3 or 13
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
    • 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
    • C10N2050/08—Solids

Definitions

  • the invention relates to the use of alkali metal phosphate in a high-temperature lubricant for lubricating two surface-contacting heated metal objects, which perform a relative movement to each other.
  • the mandrel bars For example, in the production of seamless steel or non-ferrous metal pipes, it is important to lubricate the tools, especially the mandrel bars, intensive, so they have the longest possible life.
  • the surfaces of the mandrel bars should be uniform and smooth to ensure a uniform material flow of the metal to be processed.
  • the quality of the inner pipe surfaces depends on the surface quality of the mandrel bars. If the inner surface of the tubes is rough or wavy, or even has damages due to the quality of the mandrels, a high rejection rate is obtained. It has therefore been tried in the past to increase the service life of the mandrel bars by applying lubricants on them.
  • Organic lubricants used in the hot forming of metals have proven unsuitable at high temperatures.
  • To improve the lubricating properties was therefore used for example in the DE-PS 4 300 464 or the EP-PS 0 554 822 as an essential component of the lubricant graphite.
  • graphite has good release and lubricating properties.
  • a disadvantage is the tendency of graphite, at high temperatures to carburize the workpiece surfaces, here the tube surfaces contribute. Also spot welds between the tool and the workpiece can occur. The consequence of both effects is a high tool wear and a high reject rate of the workpieces.
  • the JP-A-10168469 also describes salt mixtures which are in the molten state at the operating temperatures at which they are used.
  • the lubricants described herein contain 75-95 weight percent disodium hydrogen phosphate and / or potassium phosphate and 5-25 weight percent sodium chloride. The sodium chloride is added to lower the melting point.
  • the lubricants described therein optionally contain 10-50% by weight of graphite.
  • the GB-A-350275 describes a method of treating wires to be drawn in a cold condition in which the material to be drawn is first treated in an acid bath, then neutralized with a trisodium phosphate solution and cold drawn with mineral oil as a lubricant.
  • the problem underlying the invention was thus to obtain a process with a high-temperature lubricant to which no graphite must be added and which reduces the reject rates compared to a use of known lubricant.
  • the service life of Domstangen be increased in the metal tube production and the quality of the inner tube surfaces can be improved.
  • This object is achieved by the use of alkali metal phosphate in high-temperature lubricants for lubricating two surface contacting heated metal objects that perform a relative movement to each other, wherein the lubricant to at least 80 wt .-%, based on its solids content of at least one Alkali orthophosphate and a melting temperature above the maximum working temperature of the heated metal objects, but at least above 600 ° C, has.
  • alkali phosphates in such lubricants only make up a relatively small percentage and are so mixed with other salts that the lubricant is in a molten, that is liquid state, at the working temperatures.
  • alkali metal phosphate in a high-temperature lubricant can be used wherever, at high temperatures, two metal objects in contact with each other in a plane make a relative movement relative to one another. These are, for example, bearings in which high temperatures can occur.
  • the lubricants according to the invention are used where the surface-contacting metal objects are, on the one hand, a tool and, on the other hand, a workpiece.
  • the lubricants are suitable for lubricating mandrel bars in the manufacture of seamless metal tubes.
  • the inventive concept is suitable for lubricating any metal objects, but is particularly suitable for the machining of steel objects, in particular, as mentioned above, for the production of seamless steel tubes in which the dowel bars are lubricated with the lubricant according to the invention.
  • this should not exclude the use of lubricants of the invention, for example, for the production of tubes made of non-ferrous metals, aluminum or the like.
  • the high temperature lubricant in the inventive use is in the form of an aqueous solution.
  • This is sprayed or otherwise applied, for example, on the Domstangen in pipe production and forms after evaporation of the water, a fine release and lubricant film, which is extremely resistant to abrasion in use. Since the lubricant does not melt due to its high melting temperature in use, scale is prevented from being fixed by the lubricant on the mandrel bar surface or other tool surface. After drying, the lubricant is in the form of very fine particles, which fill all surface roughness of the tool surface and thus smooth this surface, which is transferred to the workpiece surface.
  • the formed release film also promotes the material flow of the metal to be formed on the tool surface and therefore has the property of an excellent lubricating film.
  • alkali metal phosphate in a high-temperature lubricant is particularly suitable in the atelier rolling process with the technology of the "free dome bar” and in the impact bench process. Even when Kontiwalzen, z. B. on the “semifloating" principle, significant advantages in terms of surface quality, the service life of the mandrels and the force between the rolling stands are achieved.
  • the lubricants can easily be used to produce clear, high-percentage solutions which are applied to the mandrels by means of an airless pump and nozzles.
  • the atomization is also possible by means of air, so-called two-fluid nozzles or the like.
  • the lubricant can also be applied in powder form.
  • the melting temperature of the lubricant is suitably at least 10 ° C above the maximum working temperature, as defined above, in the use according to the invention.
  • the lubricant should largely consist of one or more alkali orthophosphates; the content of alkali orthophosphate is expediently at least 95% by weight. If several Alkali orthophosphates are used, it is important to ensure that even with such mixtures, the melting temperature is above the maximum operating temperature.
  • lubricant Up to a maximum of 20% by weight, preferably up to a maximum of 5% by weight, of the lubricant may consist of other substances, which may also include small amounts of graphite, which is generally not preferred.
  • the appropriately used alkali orthophosphates are trisodium orthophosphate having a melting temperature of 1583 ° C, tripotassium orthophosphate having a melting temperature of 1340 ° C and trilithium orthophosphate having a melting temperature of 857 ° C. Trisodium orthophosphate and tripotassium orthophosphate are preferred, especially the latter. As far as the melting temperature of the lubricant remains high enough, other phosphates can be added in small amounts.
  • the actual melting temperature of the lubricant in the use according to the invention depends on the maximum working temperature in the use of the lubricant and thus on the nature of the surface touching heated metal objects.
  • the melting temperature of the lubricant may be relatively low, if it is to be used to produce pipes of non-ferrous metal or aluminum, since relatively low operating temperatures are used for these metallic materials.
  • a lubricant with significantly higher melting temperatures which in turn depend on whether chromium-nickel steels with working temperatures of about 1050 to 1100 ° C or steels with higher working temperatures are used.
  • the melting temperature for lubricating tools for steel workpieces such as when lubricating mandrel bars for the production of steel pipes above 1100 ° C, preferably above 1200 ° C.
  • the melting temperatures may be 600 or 650 ° C.
  • the service life of the Asseldome could be increased by 25% compared to known lubricant smeared Asseldornen.
  • the roughness measurements of the inner surface of the finished tubes, which were used for rolling bearings, resulted in a reduction of 22 microns to 10 microns.

Landscapes

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

Claims (8)

  1. Application de phosphates alcalins à une matière lubrifiante destinée à lubrifier deux objets métalliques chauffés portant à plat l'un sur l'autre et effectuant un mouvement relatif l'un par rapport à l'autre, notamment des objets en acier, caractérisée en ce que la matière lubrifiante est constituée d'au moins un orthophosphate alcalin dans un pourcentage d'au moins 80% rapporté à la teneur en matières solides, la matière lubrifiante ayant une température de fusion qui est supérieure à la température de travail maximale des objets métalliques chauffés, cependant au moins supérieure à 600°C.
  2. Application selon la revendication 1, caractérisée en ce que la matière lubrifiante a une température de fusion qui est supérieure d'au moins 10°C à la température de travail maximale.
  3. Application selon la revendication 1 ou 2, caractérisée en ce que la matière lubrifiante est constituée d'au moins un orthophosphate alcalin dans un pourcentage d'au moins 95% en poids.
  4. Application selon l'une des revendications 1 à 3, caractérisée en ce que la matière lubrifiante a une température de fusion supérieure à 1100°C, avantageusement supérieur à 1200°C.
  5. Application selon l'une des revendications 1 à 4, caractérisée en ce que l'orthophosphate contenu dans la matière lubrifiante est au moins un phosphate alcalin triple, avantageusement de l'orthophosphate tripotassique ou trilithique, notamment de l'orthophosphate tripotassique.
  6. Application selon l'une des revendications 1 à 5, caractérisée en ce que la matière lubrifiante contient en plus au moins un aluminate alcalin et/ou au moins un zincate alcalin dans une quantité maximale de 5% en poids, avantageusement dans une quantité de 0,2 à 3% en poids.
  7. Application selon l'une des revendications 1 à 6, caractérisée en ce que la matière lubrifiante à appliquer se trouve sous la forme d'une solution aqueuse.
  8. Application selon l'une des revendications 1 à 7 dans la lubrification de poinçons lors de la fabrication de tubes métalliques sans soudure.
EP02782698A 2001-11-02 2002-10-04 Utilisation d'un phosphate alcalin dans un lubrifiant haute température Expired - Lifetime EP1444314B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10154062A DE10154062A1 (de) 2001-11-02 2001-11-02 Hochtemperatur-Schmiermittel und dessen Verwendung
DE10154062 2001-11-02
PCT/DE2002/003772 WO2003040274A1 (fr) 2001-11-02 2002-10-04 Lubrifiant haute temperature et son utilisation

Publications (2)

Publication Number Publication Date
EP1444314A1 EP1444314A1 (fr) 2004-08-11
EP1444314B1 true EP1444314B1 (fr) 2007-07-18

Family

ID=7704527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02782698A Expired - Lifetime EP1444314B1 (fr) 2001-11-02 2002-10-04 Utilisation d'un phosphate alcalin dans un lubrifiant haute température

Country Status (6)

Country Link
EP (1) EP1444314B1 (fr)
AT (1) ATE367426T1 (fr)
DE (2) DE10154062A1 (fr)
ES (1) ES2288563T3 (fr)
PL (1) PL197304B1 (fr)
WO (1) WO2003040274A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB350275A (fr) * 1929-11-27 1931-06-11 Rudolf Wilhelm Moll
JPS6017477B2 (ja) * 1983-02-02 1985-05-02 日本工作油株式会社 水溶性金属加工用潤滑剤
ATE243247T1 (de) * 1996-09-17 2003-07-15 Chem Fab Budenheim Kg Graphitfreier dornstangenschmierstoff
JPH10168469A (ja) * 1996-12-11 1998-06-23 Nippon Steel Corp 継目無鋼管圧延用潤滑剤

Also Published As

Publication number Publication date
WO2003040274A1 (fr) 2003-05-15
PL197304B1 (pl) 2008-03-31
EP1444314A1 (fr) 2004-08-11
DE10154062A1 (de) 2003-05-15
PL368159A1 (en) 2005-03-21
ES2288563T3 (es) 2008-01-16
DE50210522D1 (de) 2007-08-30
ATE367426T1 (de) 2007-08-15

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