EP0711822B1 - Method of lubricating slideways - Google Patents

Method of lubricating slideways Download PDF

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Publication number
EP0711822B1
EP0711822B1 EP95202994A EP95202994A EP0711822B1 EP 0711822 B1 EP0711822 B1 EP 0711822B1 EP 95202994 A EP95202994 A EP 95202994A EP 95202994 A EP95202994 A EP 95202994A EP 0711822 B1 EP0711822 B1 EP 0711822B1
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EP
European Patent Office
Prior art keywords
group
alkyl
alkenyl
lubricating
amount
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
EP95202994A
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German (de)
English (en)
French (fr)
Other versions
EP0711822A3 (en
EP0711822A2 (en
Inventor
Nobuhiro Aoki
Yoshiharu Baba
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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Publication of EP0711822A2 publication Critical patent/EP0711822A2/en
Publication of EP0711822A3 publication Critical patent/EP0711822A3/en
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Publication of EP0711822B1 publication Critical patent/EP0711822B1/en
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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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/06—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic nitrogen-containing compound
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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
    • C10M169/04—Mixtures of base-materials and additives
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
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    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
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    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
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    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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    • C10M2223/042—Metal salts thereof
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/10—Phosphatides, e.g. lecithin, cephalin
    • 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
    • C10M2225/00—Organic macromolecular compounds containing phosphorus 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
    • C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2225/02—Macromolecular compounds from phosphorus-containg monomers, obtained by reactions involving only carbon-to-carbon unsaturated bonds

Definitions

  • the present invention relates to a method of lubricating the slideway(s) of a machine tool or injection moulding machine and the use of a lubricating oil composition for lubricating the slideway(s) of a machine tool or injection moulding machine.
  • the lubricating oil composition for use in the method of the present invention is more particularly for use in a machine tool for precise machining at a low feed speed.
  • Positioning of a machine tool table should be controlled accurately for precise machining.
  • various kinds of friction reducing agents are incorporated in lubricating oil compositions for use in slideways.
  • 0.1 to 10% by weight of fat esters, fat sulphides, fatty acids and/or phosphoric esters are incorporated in a base lubricating oil.
  • US-A-4 822 507 discloses a method of lubricating a metal working machine which has (i) at least one sliding machine surface requiring lubication and (ii) a metal working section wherein metal is worked in contact with a metal working fluid, said method comprises applying a lubricating oil composition to said at least one sliding surface and using as said metal working fluid an aqueous working fluid composition comprising said lubricating oil composition diluted with water, said lubricating composition comprising; (A) 5 to 88% by weight of at least one oil selected from the group consisting of a mineral oil and a synthetic oil, (B) 2 to 50% by weight of a reaction product of a long chain dibasic acid having 14 to 28 carbon atoms and an alkanolamine, (C) 5 to 30% by weight of at least one extreme pressure additive selected from the group consisting of sulfurized fat and oil, a phosphate, a phosphite, and an amine salt of phosphate or phosphite (D) 5 to
  • the present invention is aimed at providing the use of a lubricating oil composition of a low cost which is particularly suitable for use in a machine tool for precise machining and improves the accuracy of positioning of sliding systems in such a tool, and which is substantially non-corrosive.
  • a method of lubricating the slideway(s) of a machine tool or injection moulding machine comprising lubricating said slideway(s) with a lubricating oil composition comprising
  • the base oil (a) used in the present invention preferably has a kinematic viscosity of ISO VG 10 to 220 (at 40°C).
  • the mineral lubricating oil usable as the base oil (a) includes paraffinic and naphthenic mineral oils which are purified through solvent extraction and/or hydrogenation.
  • the vegetable lubricating oil includes rape seed oil, rice bran oil, soybean oil and others manufactured from vegetables.
  • the synthetic lubricating oil includes olefin oligomers, polybutenes, fatty acid esters such as esters of adipic, azelaic, phthalic, oleic or stearic acid, and polyol esters such as trimethyl propanol oleate, pentaerythritol oleate, neopentyl glycol oleate and trimethyl propanol isostearate.
  • base oils can be used individually or in combination.
  • R 1 is a C 4-20 alkyl group, a C 16-20 alkenyl group, a C 4-20 alkyl group to which 1 to 10 moles of polyoxyethylene is added, or a (C 1-10 alkyl)phenyl group to which 1 to 10 moles of polyoxyethylene is added;
  • R 2 is a C 4-16 alkyl group or a phenyl group;
  • R 3 is a methyl group;
  • R 4 is a C 8-14 alkyl group or a C 16-20 alkenyl group;
  • R 5 is a C 8-20 alkyl group, a C 10-20 alkenyl group or a sulphurised C 16-18 alkenyl group;
  • R 6 is a C 10-18 alkyl group or a C 16-20 alkenyl group;
  • R 7 is a C 10-18 alkyl group; and
  • R 8 is a linear C 8-20 alkyl group or C 16-20 alkenyl group.
  • the one or more friction reducing agents are selected from:
  • friction reducing agents can be used individually or in combination.
  • the one or more linear alkyl amines (c) are selected from:
  • the one or more friction reducing agents (b) can be used in an amount of 0.05 to 10.0% by weight, preferably 0.1 to 5.0% by weight, based on the amount of base oil (a).
  • a lubricating oil composition containing less than 0.05% by weight of the friction reducing agent(s) (b) does not provide sufficient friction reducing effect, while a lubricating oil composition containing more than 10.0% by weight of the component (b) may corrode materials of a machine tool.
  • the amount of the one or more linear alkyl amines (c) is 0.1 to 20% by weight, preferably 1 to 10% by weight, based on the amount of the friction reducing agent (b).
  • the amount of the linear alkyl amine (c) is less than 0.1% by weight, the purpose of the present invention cannot be achieved.
  • the linear alkyl amine (c) is not dissolved well in the base oil (a) when the base oil (a) is a mineral lubricating oil and the acid phosphoric ester, phosphorous ester or fatty acid used as the friction reducing agent (b) has a linear alkyl group.
  • the activity of the friction reducing agent (b) is lowered and lubricity of the lubricating oil composition is adversely affected.
  • a publicly known lubricity improver can be optionally incorporated in the lubricating oil composition of the present invention.
  • the following additives are mentioned as the examples of the lubricity improver:
  • antioxidants can be optionally incorporated.
  • rust inhibitors can be optionally incorporated.
  • detergents can be optionally incorporated.
  • viscosity index improvers can be optionally incorporated.
  • pour point depressants can be optionally incorporated.
  • metal deactivators can be optionally incorporated.
  • defoamers can be optionally incorporated.
  • the lubricating oil composition of the present invention wherein specific additives are combined with conventional ones, provides an excellent positioning accuracy which could not be obtained by lubricants containing a known additive individually. Therefore, machining accuracy of a machine tool can be remarkably improved by using the lubricating oil composition of the present invention.
  • the lubricating oil composition can be also preferably used as a lubricating oil for slideways of an injection moulding machine which is required to mould materials precisely.
  • a lubricating oil composition as defined in the present invention for lubricating the slideway(s) of a machine tool or injection moulding machine.
  • the concentration of additives such as friction reducing agents can be reduced, while it was previously necessary to add conventional friction reducing agent in a high concentration for obtaining a desired lubricating performance. Therefore, the lubricating oil composition of the present invention can effectively prevent parts of a machine from corrosion caused by adding friction reducing agent in a high concentration. Further, the lubricating oil composition is inexpensive compared with conventional lubricating oil compositions.
  • a lubricating oil having a kinematic viscosity of ISO VG 68, a viscosity index of 110, a pour point of -15°C, a total acid number of 0.00 mgKOH/g and a sulphur content of 0.5% by weight was used as a base oil (a).
  • a positioning test was carried out in accordance with the procedure of least input increment feed test of vertical type machining centre set forth in JIS B6338 Para. 2.8.
  • the machining centre was commanded through numeral control so as to feed 25 times by 1 ⁇ m/time at intervals of 10 seconds to the plus direction on Y axis, and then, to feed to the minus direction in the same manner. Actual displacement length was measured by a laser beam length measuring instrument.
  • the accuracy of the response of the feed of the machine table to a series of the numeral control commands was measured for the sample oil compositions of these examples and comparatives examples.
  • the feeding accuracy was evaluated by comparing backlash of least input increment, which was measured by counting the number of units necessary for shifting to the minus direction upon commanding to feed to the minus direction after commanding to feed to the plus direction.
  • the test was carried out in an air-conditioned room at 24°C plus or minus 0.2°C.
  • the machining centre was broken-in with the sample oil composition tested so as to lubricate the slideway surface sufficiently with the sample oil composition, and then the test was carried out 6 times. Then, the average of the results for each sample oil composition was obtained.
  • Examples 1 to 6 relate to the lubricating oil composition of the present invention. Comparative Examples 1 to 6 relate to the lubricating oil compositions wherein no friction reducing agents were incorporated and/or wherein linear alkyl amines (c) of the present invention were deleted. Further, Comparative Examples 7 and 8 relate to the lubricating oil compositions wherein only specific linear alkyl amines were added. The results of the lubricating oil composition wherein branched alkyl amine was used instead of linear alkyl amine (c) were shown by Comparative Examples 11 and 12.
  • Example 1 Comparisons of Example 1 with Comparative Example 3, Example 2 with Comparative Example 4, Example 3 with Comparative Example 5, and Examples 4, 5 and 6 with Comparative Example 6, indicate that lubricating oil compositions of the present invention (Examples 1 to 6) provide the machining centre with smaller backlash upon positioning and therefore, provides better positioning accuracy, compared with the lubricant oil compositions without linear alkyl amine (Comparative Examples 3 to 6).
  • Comparative Examples 1 and 7 and comparison of Comparative Examples 2 and 8 show that lubricant oil compositions containing the linear alkyl amine (c) only do not improve positioning accuracy of the machining centre.
  • Comparative Example 6 Comparison of Comparative Example 6 with Comparative Examples 11 and 12 indicates that the effect of the present invention cannot be obtained by using branched alkyl amines such as 2-ethylhexyl amine and tertiary C 16-22 amine instead of the linear alkyl amines (c).
  • branched alkyl amines such as 2-ethylhexyl amine and tertiary C 16-22 amine instead of the linear alkyl amines (c).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Machine Tool Units (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP95202994A 1994-11-09 1995-11-06 Method of lubricating slideways Expired - Lifetime EP0711822B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP27518594A JP4142115B2 (ja) 1994-11-09 1994-11-09 潤滑油組成物
JP275185/94 1994-11-09

Publications (3)

Publication Number Publication Date
EP0711822A2 EP0711822A2 (en) 1996-05-15
EP0711822A3 EP0711822A3 (en) 1997-03-26
EP0711822B1 true EP0711822B1 (en) 2006-09-13

Family

ID=17551871

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Application Number Title Priority Date Filing Date
EP95202994A Expired - Lifetime EP0711822B1 (en) 1994-11-09 1995-11-06 Method of lubricating slideways

Country Status (6)

Country Link
EP (1) EP0711822B1 (OSRAM)
JP (1) JP4142115B2 (OSRAM)
KR (1) KR960017826A (OSRAM)
AT (1) ATE339489T1 (OSRAM)
DE (1) DE69535220T2 (OSRAM)
TW (1) TW294717B (OSRAM)

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US11072757B2 (en) 2018-05-18 2021-07-27 Afton Chemical Corporation Slideway lubricants

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US6074994A (en) * 1996-10-10 2000-06-13 Pennzoil Products Company Non-aqueous solvent-free lamellar liquid crystalline lubricants
DE19752552A1 (de) * 1997-11-27 1999-06-02 Hoechst Schering Agrevo Gmbh Tensidsysteme für flüssige wässrige Zubereitungen
JP4963531B2 (ja) * 2001-03-19 2012-06-27 Ｊｘ日鉱日石エネルギー株式会社 摺動面用潤滑油組成物
WO2002090618A1 (fr) * 2001-05-09 2002-11-14 Citizen Watch Co., Ltd. Composition d'abaissement de regime de pointe, piece a portion coulissante utilisant une telle composition, et procede d'emmanchement a la presse utilisant ladite composition
JP4608129B2 (ja) * 2001-05-11 2011-01-05 昭和シェル石油株式会社 潤滑油組成物
JP4524102B2 (ja) * 2003-12-25 2010-08-11 新日本石油株式会社 潤滑油組成物
JP2005290235A (ja) * 2004-03-31 2005-10-20 Nippon Oil Corp すべり案内面用潤滑油組成物
JP4565612B2 (ja) * 2004-03-31 2010-10-20 Ｊｘ日鉱日石エネルギー株式会社 すべり案内面用潤滑油組成物
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JP4778491B2 (ja) * 2007-10-09 2011-09-21 昭和シェル石油株式会社 潤滑油組成物
JP5473240B2 (ja) * 2008-03-27 2014-04-16 Ｊｘ日鉱日石エネルギー株式会社 潤滑油組成物
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JP6590442B2 (ja) * 2016-02-25 2019-10-16 出光興産株式会社 潤滑油組成物
JP6680612B2 (ja) * 2016-05-12 2020-04-15 Ｊｘｔｇエネルギー株式会社 相対運動する二つの金属表面を馴染ませるのに好適な潤滑油組成物
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JP7190213B2 (ja) * 2020-12-16 2022-12-15 スギムラ化学工業株式会社 塑性加工用潤滑剤組成物

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Also Published As

Publication number Publication date
KR960017826A (ko) 1996-06-17
JP4142115B2 (ja) 2008-08-27
DE69535220D1 (de) 2006-10-26
DE69535220T2 (de) 2007-10-11
JPH08134488A (ja) 1996-05-28
TW294717B (OSRAM) 1997-01-01
EP0711822A3 (en) 1997-03-26
ATE339489T1 (de) 2006-10-15
EP0711822A2 (en) 1996-05-15

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