Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd High-performance, Biodegradable Synthetic Ester Lubricants for High-performance, Biodegradable Synthetic Ester Lubricants for Railway Systems Railway Systems
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd THE PROBLEM � Wear of wheel flanges � Wear of wheel flanges � Wear of gauge rail face � Wear of gauge rail face � Significant maintenance costs attributed to re-profiling � Significant maintenance costs attributed to re-profiling � Loss of availability of the train due to outages for re-profiling � Loss of availability of the train due to outages for re-profiling wheels wheels � Screeching on curves due to lack of, or poor lubrication � Screeching on curves due to lack of, or poor lubrication � Greater track resistance due to un-lubricated contact with � Greater track resistance due to un-lubricated contact with the wheel flange radius the wheel flange radius
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Wheel/Rail contact for :- - Wheel/Rail contact for : � Traction forces Traction forces � Braking forces � � Braking forces � Electrical signals which are � Electrical signals which are transferred during this contact transferred during this contact Lateral forces caused by :- Lateral forces caused by :- � Centrifugal effects when negotiating curves � Centrifugal effects when negotiating curves Dynamic interaction between vehicle and track � Dynamic interaction between vehicle and track � Vibrations/Shock loads due to gauge variations which lead � � Vibrations/Shock loads due to gauge variations which lead to heavy contact in zone B. to heavy contact in zone B. Zone B needs effective lubrication to reduce friction and wear. Zone B needs effective lubrication to reduce friction and wear. Absolutely no lubricant requirement in Traction Area A Absolutely no lubricant requirement in Traction Area A Absolutely no lubricant requirement in Traction Area A
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Influence of Lubrication on Wheel Influence of Lubrication on Wheel Flange Wear Flange Wear Wear area Loss of Material when re-profiling Lubricated Unlubricated Wear profile Wheel profile Re-profiled
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Wheel Flange Lubrication Requirements Requirements Wheel Flange Lubrication Wheel Flange Lubrication Requirements Primary Requirements:- Primary Requirements:- Reduction of friction between wheel and rail flange to reduce the � � Reduction of friction between wheel and rail flange to reduce the risk of derailment and to minimise rolling noises generated in risk of derailment and to minimise rolling noises generated in the contact zones. the contact zones. � Reduction of wear of wheel and rail to minimise maintenance � Reduction of wear of wheel and rail to minimise maintenance work and life cycle costs, and to increase the availability of the work and life cycle costs, and to increase the availability of the rolling stock. rolling stock. Secondary Requirements :- Secondary Requirements :- � Excellent adhesive properties are required and become more � Excellent adhesive properties are required and become more important with the introduction of high speed trains. important with the introduction of high speed trains. � Lubricity and sprayability should be independent of temperature � Lubricity and sprayability should be independent of temperature change which is not the case with bituminous products. change which is not the case with bituminous products. Good resistance against ageing. � � Good resistance against ageing.
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd What lubricant should be selected ? What lubricant should be selected ? The traditional choice was usually based The traditional choice was usually based on bitumen, but this can be a health hazard on bitumen, but this can be a health hazard Bitumen Bitumen Solvents Solvents ALL CAN BE CARCINOGENIC ! ALL CAN BE CARCINOGENIC ! Heavy Heavy Metals Metals
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Bitumen Based Greases Bitumen Based Greases Bitumen Based Greases The apparent viscosity of the grease is totally dependent on temperature and temperature change . . This behaviour seriously affects the film thickness and subsequent strength; therefore, large volumes of lubricant will be required with poor results. @ 50 to 80 o C it drips off @ 50 to 80 o C it drips off @ 15 o C the material hardens @ 15 o C the material hardens @ 5 to 8 o C depending on quality, it solidifies @ 5 to 8 o C depending on quality, it solidifies
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Ecological Aspect The Ecological Aspect The Estimated Oil Resource: Estimated Oil Resource: 135 billion tonnes 135 billion tonnes 43 Years’ Supply 43 Years’ Supply
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Lubricants in the Environment Lubricants in the Environment in Tonnes Per Annum in Tonnes Per Annum � � Western Europe circa 2,700, 000 Western Europe circa 2,700, 000 Western Europe circa 2,700, 000 � World circa 37,000,000: � World circa 37,000,000: � World circa 37,000,000: Of which Base Oils are 95% � Of which Base Oils are 95% � Of which Base Oils are 95% � And Chemical Additives 5% � And Chemical Additives 5% � � And Chemical Additives 5%
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd BIODEGRADABLE BIODEGRADABLE SYNTHETIC SYNTHETIC ESTERS? ESTERS?
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd The Solution"High Performance" The Solution"High Performance" The Solution"High Performance" Biodegradable Synthetic Lubricants Biodegradable Synthetic Lubricants Biodegradable Synthetic Lubricants Basic formulation of the lubricant :- - Basic formulation of the lubricant : Basic formulation of the lubricant :- For these applications soft free- -flowing greases should be used, which flowing greases should be used, which For these applications soft free For these applications soft free-flowing greases should be used, which may contain special solid lubricants. may contain special solid lubricants. may contain special solid lubricants. Even though the base oil is by far the biggest portion of the lubricant, bricant, Even though the base oil is by far the biggest portion of the lu Even though the base oil is by far the biggest portion of the lubricant, it is important that all single components of the additive and it is important that all single components of the additive and it is important that all single components of the additive and thickening system are checked regarding their environmental potential ntial thickening system are checked regarding their environmental pote thickening system are checked regarding their environmental potential if they are to meet the appropriate standard for biodegradability . y . if they are to meet the appropriate standard for biodegradabilit if they are to meet the appropriate standard for biodegradability . Base oil selection:- - Base oil selection: Base oil selection:- � Synthetic Esters � Synthetic Esters � Synthetic Esters Low- -viscous Polyglycols viscous Polyglycols � Low � Low-viscous Polyglycols � � Low- Low -viscous Synthetic Hydrocarbons viscous Synthetic Hydrocarbons � � Low-viscous Synthetic Hydrocarbons
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Esters - what are they ? Esters - what are they ? Very high performance, very long life Very high performance, very long life lubricants developed from a natural lubricants developed from a natural resource and alcohols resource and alcohols
Fuchs Lubritech (UK) Ltd Fuchs Lubritech (UK) Ltd Objectives For A Objectives For A Objectives For A Wheel Flange Lubricant Wheel Flange Lubricant Wheel Flange Lubricant � Environmentally harmless Environmentally harmless � Environmentally harmless � No toxic components � No toxic components � No toxic components � Low water pollution � Low water pollution � Low water pollution � Solvent- -free free � Solvent � Solvent-free � High performance � High performance � High performance � Long Life � Long Life � Long Life � High biodegradability � High biodegradability � High biodegradability Biodegradability test methods are not homogeneously regulated, Biodegradability test methods are not homogeneously regulated, Biodegradability test methods are not homogeneously regulated, CEC L- -33 33- -A A- -93 is the standard most commonly used. 93 is the standard most commonly used. CEC L CEC L-33-A-93 is the standard most commonly used.
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