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
  • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
  • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
  • C10M137/04—Phosphate esters
  • C10M137/06—Metal salts
• • 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
• • 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
  • 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
• • 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
  • C10M2223/041—Triaryl phosphates
• • 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
  • C10M2223/042—Metal salts 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
  • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling
• • 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 the use of partially neutralized Phosphorklaestern as EP-additives (E Xtreme P ressure additives) in cooling lubricants.
• Cooling lubricants are used in both metal-cutting and non-cutting processing of metallic materials. Cooling lubricants have the task of dissipating heat and reducing process-related frictional forces.
• a cooling lubricant is based on a water-in-oil emulsion.
• the cooling lubricant concentrate contains emulsifiers, biocides, defoamers, corrosion inhibitors, EP additives, mineral oil and / or synthetic oils.
• a usable emulsion is obtained by dilution with water. the usual use concentration is in the range of 1 to 20% (m / m).
• EP additives contain chlorine, sulfur or / and phosphorus compounds or combinations which themselves or their thermal breakdown products form reaction layers which can be sheared off with the surfaces of the metals.
• These highly adhesive, easily shearable reaction layers consist of the metal salts of the additives used. The reaction layers formed are effective until they are melted by an increase in temperature as a result of frictional heat.
• Chlorine-containing additives work in a temperature range of approx. 180 ° C to 670 ° C
• phosphorus-containing additives are assigned a temperature range of approx. 240 ° C to 900 ° C.
• Sulfur additives cover the upper temperature range from approx. 530 ° C to over From 1000 ° C.
• the invention thus relates to the use of alkali or alkaline earth metal salts of compounds of the formula wherein R1 represents a hydrogen atom or a C1-C20 alkyl group, a C2-C20 alkenyl group or an optionally substituted C6-C10 aryl group and R2 represents a C1-C20 alkyl group, a C2-C20 alkenyl group or an optionally substituted C6-C10 -Aryl group means.
• Alkali or alkaline earth metal salts used are those of compounds of the formula wherein R1 is a hydrogen atom or a C1-C20-, preferably C1-C6-alkyl group, a C2-C20-, preferably C2-C6-alkenyl group or an optionally substituted C6-C10-, preferably C6-aryl group and R2 is a C1-C20 -, preferably C1-C6-alkyl group, a C2-C20-, preferably C2-C6-alkenyl group or an optionally substituted C6-C10-, preferably C6-aryl group.
• the phosphoric acid ester is initially introduced and the aqueous alkali or alkaline earth compound, preferably the hydroxide (if possible concentrated), is slowly added with stirring.
• the heat of neutralization generated is dissipated by cooling.
• the cooling lubricant according to the invention contains 5 to 50%, based on the ester, emulsifiers, corrosion inhibitor, mineral oil and / or synthetic oil, bactericide and defoamer, the following quantitative ratios being present: Phosphorus compound 5 to 50% Emulsifier 10 to 50% Anticorrosive 5 to 30% mineral oil 5 to 20% Synthetic oil 5 to 20% Bactericide 0.5 to 2% Defoamer 0.01 to 0.5%, where the sum of all components is 100%.
• Emulsifiers reduce the surface tension of the oil droplets floating in the water.
• Suitable emulsifiers are ionic emulsifiers, for example amine soaps, alkali soaps, sulfonates, nonionic emulsifiers, for example ethoxylated longer-chain alcohols.
• Suitable corrosion inhibitors are, for example, alkali or alkanolamine salts of organic acids, amines, sulfonates.
• Biocides are used to keep the microbiological infestation of an emulsion with bacteria, fungi and yeast as low as possible.
• Defoamers are used to suppress the tendency of the emulsion to foam, for example silicone oils are suitable.
• Suitable mineral oils are paraffinic or naphthenic oils of the different viscosity classes.
• polyethylene glycols for example, polyethylene glycols, mixed polyglycols, polyolefins or carboxylic acid esters are used as synthetic oils.
• the phosphoric acid ester was characterized by the following key figures: Phosphorus content approx. 18.8% (m / m) Density at 20 ° C 1.2 g / cm3 Viscosity at 20 ° C 430 mPa.s Viscosity at 40 ° C 136 mm2 / s Acid number approx. 490 mg KOH / g pH at 20 ° C 1.6
• the test specimens consist of a slip ring (ball bearing ring) and a roller body (for rolling bearings). During the test, the roller body is crossed axially and pressed onto the slip ring with a 150 N or 300 N double lever system.
• a third of the slip ring is immersed in the test liquid and brings enough lubricant to the friction point at 900 rpm.
• the slip ring runs 100 m.
• the wear path is noted as the number of meters at which the grinding noise disappears (noise meter).
• the elliptical ground mark obtained by the friction at the point of contact (slip ring roller body) is measured with a measuring magnifier.
• the surface area of the cut mark serves as a direct criterion for wear and the specific surface pressure as a measure of the compressive strength of lubricants.
• Three test runs are carried out to determine the specific surface pressure; a cleaning run must be carried out after each test run. An average is formed from the three cut marks obtained. The noise meters and the specific surface pressure are used to assess the lubricant.
• the cutting tests were carried out at cutting speeds of 50 m / min, 60 m / min and 85 m / min.
• the depth of cut was 1.0 mm at a feed rate of 0.1 mm / revolution.
• the free area wear on the turning tool was measured after 5 min.
• the attempt was made after reaching one Free space wear of 0.2 mm canceled.
• a steel with the designation C 100 W 1 (medium hard to cut) with the following composition was used as material: carbon 1.0% silicon 0.17% manganese 0.17% sulfur 0.02%
• a cutting agent containing phosphoric acid ester according to recipe 1 (10% in drinking water) was used in the machining tests.
• a cooling lubricant according to recipe 2 (10% in drinking water) and a chlorine-containing cooling lubricant on the market (10% in drinking water) served as a comparison.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=6476699

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (2)

Citations (5)

• 1993
  • 1993-12-21 EP EP93120595A patent/EP0605839A1/de not_active Withdrawn
  • 1993-12-23 FI FI935826A patent/FI935826A/fi unknown
  • 1993-12-24 AU AU52705/93A patent/AU5270593A/en not_active Abandoned
  • 1993-12-27 NO NO934835A patent/NO934835L/no unknown
  • 1993-12-27 ZA ZA939708A patent/ZA939708B/xx unknown
  • 1993-12-28 JP JP5349357A patent/JPH06234987A/ja not_active Withdrawn

Patent Citations (5)

Non-Patent Citations (1)

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