EP2338003B1 - Auszugsfühurung für haushaltsgeräte - Google Patents

Auszugsfühurung für haushaltsgeräte Download PDF

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Publication number
EP2338003B1
EP2338003B1 EP09737450.8A EP09737450A EP2338003B1 EP 2338003 B1 EP2338003 B1 EP 2338003B1 EP 09737450 A EP09737450 A EP 09737450A EP 2338003 B1 EP2338003 B1 EP 2338003B1
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EP
European Patent Office
Prior art keywords
lubricant
boron nitride
drawer slide
graphite
slide according
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.)
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Application number
EP09737450.8A
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German (de)
English (en)
French (fr)
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EP2338003A1 (de
Inventor
Peter Jährling
Willi Grigat
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.)
Paul Hettich GmbH and Co KG
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Paul Hettich GmbH and Co KG
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Priority to EP12167595.3A priority Critical patent/EP2508805B1/de
Publication of EP2338003A1 publication Critical patent/EP2338003A1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
    • F24C15/168—Shelves, racks or trays inside ovens; Supports therefor with telescopic rail systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/16—Shelves, racks or trays inside ovens; Supports therefor
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/54—Lubricating compositions characterised by the base-material being a macromolecular compound containing atoms of elements not provided for in groups C10M107/02 - C10M107/52
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • 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
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C10M2201/0413—Carbon; Graphite; Carbon black used as base material
    • 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
    • C10M2201/061—Carbides; Hydrides; Nitrides
    • 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
    • C10M2201/061—Carbides; Hydrides; Nitrides
    • C10M2201/0613—Carbides; Hydrides; Nitrides used as base material
    • 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
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • 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
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • C10M2201/0663—Molybdenum sulfide used as base material
    • 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
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/401—Fatty vegetable or animal oils used as base material
    • 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
    • C10M2213/043—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen used as base material
    • 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
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • 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
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C10M2213/0623—Polytetrafluoroethylene [PTFE] used as base material
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C10M2229/025—Unspecified siloxanes; Silicones used as base material
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/055—Particles related characteristics
    • C10N2020/06—Particles of special shape or size
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/081—Biodegradable compounds
    • 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
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/62—Food grade properties
    • 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
    • C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
    • 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
    • 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
    • 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
    • C10N2050/10—Form in which the lubricant is applied to the material being lubricated semi-solid; greasy

Definitions

  • the present invention relates to a drawer slide, in particular for a baking oven, with at least two rails which can be moved relative to one another and which are guided against one another via roller bodies.
  • the EP 1589291 A1 discloses a generic drawer slide, which has rolling elements which are mounted in a rolling cage.
  • the WälzSystem hofig on a smear layer which, inter alia, the inclusion of boron nitride in a paint provides.
  • the coating extends over the entire surface of the WälzSystem hofigs. Since boron nitride is used only for reasons of cost in areas in which its special material properties are absolutely necessary, when using this compound, the most cost-effective application is required. A large area coating like in EP 1589291 A1 is therefore not useful.
  • the DE 35 37 479 A1 discloses a corrosion inhibitor with simultaneous lubricating effect, which can be used for high temperature applications.
  • Object of the present invention is to provide a drawer guide that allows for the use of low as well as the use of high temperatures over a long period of smooth running of the rails.
  • the inventive solution the boron nitride and graphite lubricant is applied to the much smaller areas of the raceways at least partially. This allows a targeted lubrication with less material consumption.
  • Hexagonal boron nitride has proven to be an optimal lubricating and lubricating agent in the range of higher temperatures. It is chemically inert and oxidation resistant, with the exception of alkaline melts and basic solutions.
  • the structure of the boron nitride is similar to that of graphite and from a temperature of 900 ° C, boron nitride converts to cubic ⁇ -boron nitride.
  • the application of the lubricant takes place according to the invention as a sliding paste. This allows the lubricant to be used for industrial series production. In addition, this form of application enables a very exact selection and coating of the application surfaces.
  • the lubricant mixture is according to a preferred embodiment, a mixture of boron nitride, graphite and high temperature fat, with a mass fraction w (boron nitride) between 5% to 30%, preferably a mass fraction w (boron nitride) between 10% to 20%.
  • a mass fraction w boron nitride
  • graphite emits embedded water molecules at longer heating times, which reduces its lubricating effect for a short time, it remains with boron nitride even at high temperatures, in particular over 200 ° C.
  • the lubricant may advantageously contain as polysiloxane preferably a silicone paste, a silicone grease and / or a silicone oil, which does not burn at temperatures above 300 ° C, so for example in the pyrolysis of ovens.
  • polysiloxane preferably a silicone paste, a silicone grease and / or a silicone oil, which does not burn at temperatures above 300 ° C, so for example in the pyrolysis of ovens.
  • the consistency between these designs can be varied by mixing.
  • Post-treatment after application of the lubricant by vibratory grinding allows better distribution and maintenance of the lubricant on the metallic substrate.
  • the lubricant has a temperature resistance of over 600 ° C, which allows, for example, an application in the range of cooking ovens and their purification by pyrolysis.
  • the lubricant has a thixotropy, which decreases in these pastes under mechanical action whose viscosity and the original viscosity sets only after prolonged standing again.
  • the pastes can be relatively easily distributed on the surface of the drawer guides under pressure load. This is the case with BNC pastes, for example.
  • the viscosity of a lubricant without the addition of solids is advantageously in the range between 50-1500 mm 2 / s, preferably 100-1000 mm 2 / s, whereby a discharge of the low to medium viscosity mass can be carried out without the lubricant at the ends the lanes can flow out.
  • the lubricant is so hydrophobic that a bacterial or fungal attack of the lubricant is excluded.
  • the carrier substance Depending on the carrier substance, it is decomposed predominantly into water and carbon dioxide during the pyrolysis.
  • the boron nitride and graphite content in the lubricant mixture was uniformly distributed in the tracks of the pullout guide with the aid of the carrier material.
  • the boron nitride remains in the tracks of the pullout guide and enables a smooth operation of the pullout guide, thus it is still lubricated. Due to the mechanical load prior to pyrolysis, the boron nitride / graphite content in the mixture is incorporated into the raceways of the pullout guide.
  • the lubricant according to the invention is particularly suitable for the lubrication of fittings in household appliances such as e.g. Ovens or refrigerators, due to its operating range of approx. - 50 ° C to approx. 600 ° C. For other areas, the application of the lubricant is conceivable, especially in areas where a food suitability is required.
  • the lubricant according to the invention can also be lubricated with the lubricant according to the invention.
  • lubricants are preferably used which comply with the FDA 21 CFR 178.3570 (US Food and Drug Administration).
  • the lubricants should be registered by the NSF (National Sanitation Foundation) in the Hl category. Reference is also made to ISO 21469.
  • the lubricants used preferably also meet the hygiene requirements according to the German version DIN EN ISO 21469: 2006.
  • a pullout guide 1 comprises a guide rail 2 and a running rail 3 movable relative to the guide rail.
  • the guide rail 2 and the running rail 3 are made of a bent sheet steel.
  • the guide rail 2 can be fixed to a side wall of a baking oven and on the running rail 3, a food support can be placed accordingly.
  • the running rail 3 is mounted on rolling elements 4 movable on the guide rail 2.
  • the guide rail 2 in the longitudinal direction of a plurality of raceways 6 for the spherical rolling elements 4, which are held in a rolling element cage 5.
  • a lubricant 7 is applied to a portion of the raceways 6 each. By rolling the rolling elements 4 on the sections with the lubricant 7, this is distributed over the entire track 6 on the guide rail 2 and on the raceways 8, which are formed on the running rail 3.
  • a pullout guide with a running rail 3 and a guide rail 2 is described. It is of course also possible to form the pullout guide as a full extension and to provide a center rail between the guide rail 2 and the running rail 3.
  • Lubricants and lubricants are, for example, boron nitride and graphite, which are relatively easily distributed by friction on a surface due to their hexagonal structure and then prevent friction.
  • the mixture BNC has tribological and other physical and chemical properties that make it possible to use them as dry lubricants with hygroscopic properties in household waste products.
  • the powder has sufficient sliding properties after high temperature stress as it can occur in pyrolysis (self-cleaning process in the oven at 600 ° C), as well as at minus temperatures in freezers.
  • the temperature stress has a different influence on the mixed substances at common temperatures in the oven, the sliding friction of both substances is taken.
  • the vesicle-containing range up to 100 ° C, as well as with high air humidity, the main lubricating effect of graphite, which unfolds its lubricating effect in the presence of moisture best. In the low temperature range and temperatures above 400 ° C, the lubricating effect is mainly at BN.
  • the BNC mixture can also be further processed with different methods.
  • inflation onto the surface as powder with or without carrier gas spraying with a wet carrier, brushing with a brush and wet carrier, mixing by means of drum technique or dipping in a wet carrier into consideration.
  • spraying process via nozzles even with pasty consistency of the mixture, conceivable.
  • the BNC powder is mixed with a wet carrier such as water, alcohol or food oils, fats together, then depending on the Nassconce a suspension (heterogeneous solid / liquid mixture), a dispersion (homogeneous solid / liquid mixture) or an emulsion (heterogeneous liquid / liquid mixture).
  • a wet carrier such as water, alcohol or food oils, fats together
  • the subsequent mixture can consist of solid / liquid or liquid / liquid or gaseous / liquid substances, which are then further processed in the above-mentioned processes.
  • Both boron nitride and carbon have hexagonal and cubic modifications of their crystal structure, with hexagonal carbon modification widely known as graphite and cubic modification as diamond. Similar to the graphite, the hexagonal boron nitride has a layer structure, whereby the overlapping layers shift relative to each other relatively easily let and thus cause a lubricating and lubricating effect.
  • the performance of the BNC-Si lubricants used is based on a physical and tribochemical effect for use in extracts and hinges. This occurs particularly advantageous in the range of -50 to + 220 ° C. With a consistently high mechanical load, you will get an almost constant viscosity within the specified temperature range.
  • the viscosity of BNC-Si lubricant - is in the range between 100-1000 mm 2 / s, is determined at 25 ° C according to DIN 51562 and classifies the BNC-Si lubricant in the category of low to medium viscosity substances , Due to the high hydrophobicity of the lubricants form a corrosion protection, which leads neither to bleeding in the temperature range, nor to oil secretions, even over long periods of time.
  • the viscosity data refer to the lubricant without added solids.
  • BNC-Si lubricants do not occur when using BNC-Si lubricants.
  • a high pressure absorption capability comes into play.
  • a pull-out guide provided with BNC silicone lubricants will have consistently good sliding properties even under high mass load, for example due to food carriers.
  • the BNC-Si lubricant can be applied with silicone pastes, silicone greases and silicone oils.
  • the low surface tension in conjunction with a pronounced surface activity at 25 ° C. of 20-22 mN / m, preferably 20.9-21.2 mN / m, allows complete wetting of a large surface area during application.
  • other solvents can be added to the lubricant.
  • the color of the lubricant is adjustable by the BNC ratio.
  • FIG. 6 Measurements are shown in the form of a diagram, which can be described the properties of a BNC-Si paste, which was applied as a lubricant on an electrodeposited aluminum surface.
  • the pullout guide with 15000 double strokes ie a extension and retraction of the pullout guide, was tested for wear.
  • the pull-out rail was subjected several times to pyrolysis cycles of 500 ° C., which were repeated once in each case after 750 double strokes. This serves to simulate the conditions to which the drawer runner is exposed in pyrolysis furnaces.
  • the pullout guide was loaded during this experiment with a mass of 11 kg and subjected to a total of 100 pyrolysis runs.
  • the forces which were used to pull out the pullout guide were in the range between 3.5 and 6.5 N, the fluctuations being relatively constant around a mean value of 5.0 N and observed no increase or decrease in the force on average is.
  • the measurement results show a consistent runnability with quiet running with little effort (classification 1-7, where 1 of the highest running quality, with smooth running, and 7 of the lowest running quality, with blocking and halting run, corresponds).
  • the measurement results also show a constant mobility with quietly pounding barrel (classification 1-7, where 1 is defined as discreet noise and 7 as disturbing, booming noise).
  • test number lubrication composition double strokes pyrolysis test result test result 1 BN: C: NO paste 25:25:50 BNC: oil 17500 60 Gi staining of the surface Running test went trouble-free 2
  • compositions which are listed in the table refer in each case to percentage mass fractions.
  • Si the percentage mass fractions of silicone oils or silicone pastes were characterized.
  • NO was used to denote the percentage by weight of native oils.
  • PFPE was used to denote the percentage by weight of perfluoroethyloxide oil.
  • composition under test number 2 or 6 is particularly preferred. Thus, even after 100 cleaning cycles, according to test number 6, this formulation shows no change in the running properties or runnability.
  • the silicone oil used in this exemplary composition consists essentially of polydimethylsiloxane, moreover, the particle size of the hexagonal boron nitride used is about 5 microns and the particle size of the graphite used also about 5 microns. A particle size of about 5 microns shows a particularly good lubricating property. Investigated were investigated particle size in the range of 0.1 microns to 8 microns.
  • the boron nitride and graphite particles roll into the surface.
  • the rolled-in BNC particles can not be removed from the pull-out guides in the dishwasher after only 100 double strokes. After 25 cleaning applications in the intensive cleaning program, the drawer slides are still fully functional. Thus, a dishwasher resistance is achieved. Household and industrial dishwashers were used to investigate dishwasher safety.
  • both the particle size of the boron nitride and of the graphite are subject to a certain fluctuation range.
  • the particle size can vary between 0.1-500 ⁇ m.
  • the fraction was used with a particle size of about 5 microns.
  • compositions of lubricants in the high-temperature range are stirred up: 1.Mischung: graphite 20-50%, preferably 30-40% silicone oil 0.5-5%, preferably 1-3% water 45-79.5%, preferably 57-69% 2.Mischung: boron nitride 10-40%, preferably 20-30% graphite 10-40%, preferably 20-30% silicone oil 20-80%, preferably 40-60% (reached viscosity is 1000 mm 2 / s) 3.Mischung: boron nitride 10-40%, preferably 20-30% graphite 10-40%, preferably 20-30% Perfluorethyloxidöl 20-80%, preferably 40-60% 4.Mischung: boron nitride 10-40%, preferably 20-30% graphite 10-40%, preferably 20-30% olive oil 20-80%, preferably 40-60% (reached viscosity is 100 mm 2 / s) 5.Mischung: graphite 20-50%, preferably 30-40% silicone
  • mixture boron nitride 15-35%, preferably 20-30% graphite 15-35%, preferably 20-30% Perfluorethyloxidöl 30-70%, preferably 40-60% 7.
  • oils with a high content of unsaturated fatty acids and other native oils can also be used.
  • the viscosity of the liquid lubricants can be varied without departing from the scope of the inventive concept.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubricants (AREA)
EP09737450.8A 2008-10-24 2009-10-22 Auszugsfühurung für haushaltsgeräte Active EP2338003B1 (de)

Priority Applications (1)

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EP12167595.3A EP2508805B1 (de) 2008-10-24 2009-10-22 Schmiermittel

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DE102008053022 2008-10-24
DE102009009124A DE102009009124A1 (de) 2008-10-24 2009-02-16 Auszugsführung für Haushaltsgeräte
PCT/EP2009/063933 WO2010046456A1 (de) 2008-10-24 2009-10-22 Beschlag für haushaltsgeräte und schmiermittel

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KR (1) KR101619213B1 (pl)
CN (1) CN102165264B (pl)
DE (1) DE102009009124A1 (pl)
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JP2012506527A (ja) 2012-03-15
EP2508805A1 (de) 2012-10-10
KR20110079748A (ko) 2011-07-07
KR101619213B1 (ko) 2016-05-10
WO2010046456A1 (de) 2010-04-29
PT2338003T (pt) 2016-12-30
CN102165264B (zh) 2014-03-19
US20110187253A1 (en) 2011-08-04
PL2338003T3 (pl) 2017-02-28
JP5691057B2 (ja) 2015-04-01
EP2508805B1 (de) 2016-08-10
EP2338003A1 (de) 2011-06-29
CN102165264A (zh) 2011-08-24
DE102009009124A1 (de) 2010-04-29

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