EP0360503B1 - Use of aqueous compositions in the plastic processing of metals - Google Patents

Use of aqueous compositions in the plastic processing of metals Download PDF

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Publication number
EP0360503B1
EP0360503B1 EP89309379A EP89309379A EP0360503B1 EP 0360503 B1 EP0360503 B1 EP 0360503B1 EP 89309379 A EP89309379 A EP 89309379A EP 89309379 A EP89309379 A EP 89309379A EP 0360503 B1 EP0360503 B1 EP 0360503B1
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EP
European Patent Office
Prior art keywords
different
weight
meet
composition
molecular weight
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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
EP89309379A
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German (de)
English (en)
French (fr)
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EP0360503A1 (en
Inventor
Pietro Lafratta
Alba Chittofrati
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.)
Solvay Specialty Polymers Italy SpA
Original Assignee
Ausimont SpA
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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
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M147/00—Lubricating compositions characterised by the additive being a macromolecular compound containing halogen
    • C10M147/04—Monomer containing carbon, hydrogen, halogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
    • 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
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/242—Hot working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • the present invention relates to a liquid water-based composition useful as a lubricating and refrigerating liquid in the plastic processing of metals, which comprises, as a basic ingredient, a perfluoropolyethereal compound.
  • the composition according to the invention is suitable in particular for rolling, dishing, drawing, pressing of metals in general, of ferrous and non-ferrous types such as steel, copper, aluminium and alloys thereof.
  • liquids acting as lubricants in metal processing processes are well known.
  • Such liquids which generally consist of hydrocarbon oils with various additives for improving the performances thereof under severe operative conditions (high pressures, high temperatures), exhibit the drawback of being inflammable.
  • Lubricating compositions of this type are described for example in EP-A-0,048,216 (Alusuisse) CA-A-987,655 (Exxon), US-A-4,585,565 (Alcoa) and US-A-4,618,441 (Alcoa).
  • compositions in the form of aqueous emulsions have been suggested, it has been found that it is very difficult to prepare a composition which exhibits excellent performances as regards lubrication and cooling, a low friction coefficient (in order to achieve high reduction ratios) and which, furthermore, is endowed with good lubricating properties at high pressures and at the same time is free from various drawbacks such as instability of the emulsion which can lead to separation under the operating conditions.
  • micro-emulsion is described in EP-A-250766.
  • One suggested use of the micro-emulsion is in preparation of oil-based lubricants in order to ensure that water-soluble additives can be included.
  • compositions always require specific additives depending on the fields of use, in order to attain good values for the specific properties which are of major interest for the expected use.
  • the present invention comprises use of an aqueous composition
  • a perfluoropolyethereal compound having an average molecular weight of at least 400 with end groups of the perfluoropolyethereal chain consisting of perfluoroalkyls and/or of functional groups characterised in that the composition comprises from 1 to 40% by weight of the perfluoro - polyethereal compound at least 60% by weight water and the use is for a lubricating/refrigerating liquid in the cold plastic processing of metals.
  • the composition used according to the invention besides exerting an excellent lubricating action, which allows a large reduction of thickness in a single run or pass in the rolling process, also effect an efficacious cooling of the material being processed by virtue of the high water content of the composition.
  • the water content is at least 60% by weight and is preferably at least 80% by weight.
  • compositions do not leave harmful product residues on the processed material, in a few cases it being possible to avoid a subsequent washing or rinsing.
  • the compositions used according to the invention possess a high chemical stability and, if they are in the form of microemulsions, an unlimited physical stability.
  • the residues remaining after evaporation of the water are non-inflammable.
  • An essential component of the lubricating-refrigerating compositions used according to the invention is a perfluoropolyether (PFPE) having an average molecular weight of at least 400 and preferably not higher than 5,000, with end groups of the perfluoropolyethereal chain of neutral type (perfluoroalkyl groups) and/or of polar functional type.
  • PFPE perfluoropolyether
  • the perfluoropolyethereal compound may be present in the aqueous composition either in the form of solution when the average molecular weight does not exceed 1,000 and the end groups are particularly hydrophilic(carboxylic groups), or in the form of microemulsions when the molecular weight exceeds 1,000 or alternatively when the average molecular weight is low and the end groups are neutral (perfluoroalkyl groups).
  • microemulsion designates a liquid, macroscopically single-phase composition, which is limpid (transparent) or slightly opalescent (translucent), optically isotropic, indefinitely stable in a defined temperature range comprising the temperature at which said composition is used.
  • microemulsions of both neutral and functional perfluoropolyether are prepared according to the ealier patent application EP-A-0,250,766.
  • Perfluoropolyethereal compounds which are particularly suitable as basic components of the aqueous composition used according to the present invention are the ones having a carboxylic end group suitably salified with organic or inorganic bases, in particular with ammonia or triethanolamine.
  • the amount of total perfluoropolyethereal compounds in the lubricating composition used according to the invention ranges from 1% to 40% by weight, preferably from 2% to 20%.
  • the perfluoropolyethers suited to form the lubricating compositions which are used according to the object of the present invention are in particular the ones which have an average molecular weight from 400 to 5,000 and preferably from 600 to 2,000, and belong in particular to one or more of the following classes:
  • Perfluoropolyethers of class 1) are commercially available under the trademarks Fomblin R Y or Galden R and those of class 2) are commercially available under the trademark Fomblin R Z, all being produced by Montedison.
  • Products of class 4 which are available on the market are the Krytox R (du Pont). Products of class 5) are described in US-A-4,523,039 or in J. Am. Chem. Soc. 1985 , 107, 1197-1201.
  • a second inessential but still very useful ingredient in particular in order to increase the stability of the aqueous microemulsion when it contains non functional (neutral) PFPE, is a hydrogenated aliphatic alcohol, in particular isopropanol, or a fluorinated alcohol such as perfluoropolyether with end group -OH and a low molecular weight ( ⁇ 450).
  • the alcohol amount in the aqueous composition may be as much as 20% by weight, but usually it does not exceed 10%.
  • Useful compositions are described in previously cited EP-A-0,250,766.
  • the lubricating composition used according to the invention may furthermore contain small amounts of conventional additives such as components endowed with anticorrosive or antiwear properties, surfactants, EP additives, etc depending on the specific use they are intended for.
  • Example 13 Rolling and PSCT tests
  • alloys and mechanical characteristic thereof are disclosed eg in "Registration records of International alloy designation. Chemical Composition Limits for wrought aluminium and wrought alloy”. Aluminium Association - Dusseldorf, Washington.
  • the lubricating compositions under examination were subjected to the "Plane Strain Compression Test" (paper 2015 by R.D. Guminski and J. Willis - Journal of the Institute of Metals, 1959-60, vol 88).
  • the Plane Strain Compression Test is an improvement of the BISRA Compression Test (see The Rolling of Metals by L.R. Underwood, pages 116-119 - Chapman and Hall - London 1952) and is well indicative of the thickness reduction capacity of the lubricants in the cold-rolling of aluminium: the data determined in the plane strain compression test are well in correlation to the behaviour in use exhibited by the lubricating mixtures.
  • the fluids of the present invention can be applicated to the metal surface according to conventional methods such as immersion, spraying, and by means of jets, brushes, wiping, rollers or the like.
  • the composition was applied by brush.
  • Table 1 Determination of the friction coefficient by means of the Plane Strain Compression Test (PSCT) , as is described by Kubie and Delamare in the above-cited literature. Also this test, which provides the friction coefficient values, permits to evaluate the reduction ratios obtainable in the rolling process.
  • PSCT Plane Strain Compression Test
  • applicated load 10,000 kg:
  • Dishing is the process by means of which a metal plate is subjected to permanent plastic deformation by buckling between two surfaces (die and punch).
  • the lubricant must have good EP characteristics (high pressures), i.e. it must secure the sliding between two metal surfaces (sheet iron to be deformed and dies) under a high pressure, and that is achieved by lubricants which do not exhibit any film rupture under such conditions.
  • high pressures high pressures
  • the lubricants may be a mineral oil with various additives, as well as soap baths, emulsions, waxes, greases, fluoride and phosphate baths, chloroparaffins, polymeric resins, graphite or MoS2 in oil etc.
  • PFPE-based aqueous compositions according to the present invention are suited also as lubricants for the dishing process.
  • compositions are suited to the dishing of metals as they permit a dishing ratio comparable to the ones obtainable with whole oils based on hydrocarbons, while remarkably reducing the necessity to degrease the sheets for the subsequent processing steps.
  • compositions of the invention may further contain minor amounts of additives for particular operative conditions if necessary.
  • additives may be for instance corrosion inhibitors, antistatic agents, surfactants or slippage agents.
  • the fluids of the present invention are applicable to the metal surface by means of conventional methods such as dipping, spraying, wiping, by brushes, roller or the like.
  • the results, which are reported on the following table 4, indicate the depth of penetration, in tenths of mm, of the punch into a sheet-steel having a roughness of 0.8 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)
EP89309379A 1988-09-19 1989-09-15 Use of aqueous compositions in the plastic processing of metals Expired - Lifetime EP0360503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2199888 1988-09-19
IT8821998A IT1227163B (it) 1988-09-19 1988-09-19 Composizioni liquide acquose comprendenti composti perfluoropolietereiidonee quali lubrificanti nella lavorazione plastica dei metalli

Publications (2)

Publication Number Publication Date
EP0360503A1 EP0360503A1 (en) 1990-03-28
EP0360503B1 true EP0360503B1 (en) 1993-05-19

Family

ID=11189979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89309379A Expired - Lifetime EP0360503B1 (en) 1988-09-19 1989-09-15 Use of aqueous compositions in the plastic processing of metals

Country Status (5)

Country Link
EP (1) EP0360503B1 (ja)
JP (1) JP2935714B2 (ja)
CA (1) CA1336595C (ja)
DE (1) DE68906625T2 (ja)
IT (1) IT1227163B (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04168621A (ja) * 1990-10-31 1992-06-16 Hitachi Ltd 潤滑組成物およびそれを用いた電子部品
JPH05143975A (ja) * 1991-09-24 1993-06-11 Sony Corp 磁気記録媒体
US5676005A (en) * 1995-05-12 1997-10-14 H. C. Starck, Inc. Wire-drawing lubricant and method of use
AU6962998A (en) * 1997-11-13 1999-06-07 Minnesota Mining And Manufacturing Company Methods of working metal and compositions useful as working fluids therefor
US9005711B2 (en) 2008-10-24 2015-04-14 Solvay Specialty Polymers Italy S.P.A. Method for forming a lubricating film
JP5604343B2 (ja) * 2011-03-18 2014-10-08 Ｊｘ日鉱日石エネルギー株式会社 塑性加工用潤滑油組成物

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL82308A (en) * 1986-06-26 1990-11-29 Ausimont Spa Microemulsions containing perfluoropolyethers

Also Published As

Publication number Publication date
JPH02153996A (ja) 1990-06-13
EP0360503A1 (en) 1990-03-28
DE68906625D1 (de) 1993-06-24
IT8821998A0 (it) 1988-09-19
CA1336595C (en) 1995-08-08
JP2935714B2 (ja) 1999-08-16
IT1227163B (it) 1991-03-20
DE68906625T2 (de) 1993-12-09

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