Noise reduction in Railway Traffics

FUCHS LUBRITECH GMBH

TRAM-SILENCE / 1

Noise reduction in Railway TrafficsNoise reduction in Railway Traffics


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Problem:

„Wheel squealing“ when travelling through curves

high-frequent, disturbing noises

Noise problem for the neighborhood

high costs for noise preventing measures


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Reasons:

different distances for outer and inner wheel in curves

differential slip

torsion of the axles

Stick-slip-Effects, normally on the low rail


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Remedy:

steered wheel sets: better adaptation of the axles to the curve radius

Disadvantage: high costs, reduces only wheel flange wear


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Remedy:

Rail Head Treatment with intermediate agents

TRAM-SILENCE

TRAM-SILENCE 00


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Remedy:

TRAM-SILENCE is applied manually onto the rail head

Consumption as low as possible

Application on the low rail is normally sufficient

Beginning some meters before the curve starts

End normally some meters behind the starting point of the curve

Bidirectional traffic: Application from the center of the curve in both directions


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Remedy:

Recently, we had a lot of inquiries for a product which can be applied automatically

This can be done with TRAM-SILENCE at „normal“ temperatures, e.g. with REBS-lubricators

TRAM-SILENCE is not sprayable at low temperaturs

Therefore: Modification TRAM-SILENCE 00


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Composition: TRAM-SILENCE TRAM-SILENCE 00

Base oil: native synthetic

Thickener: Ca-Seife inorganic

Solids: Metal powder, Graphite

Properties:

First results of spray tests with TRAM-SILENCE 00: Sprayability down to -20°C possible

BEKA Fluilub

Vogel SP 9

REBS (-15°C)


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Customers:

several local tramway operators in Germany

Jena, Frankfurt/Oder, Leipzig, Gera, Dresden etc.

Deutsche Bahn AG (pre-trials)

Dutch Railway NS (Practical trial)

Spanish Railway RENFE and some local operators

several Australian operators

Several swiss operators


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Customers:


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Consumption rates and results

Consumption rate is dependent from local conditionse.g. Curve radius, Rail- and Wheel condition, Weather etc.

Slogan: as much as necessary, as few as possible

Braking, traction and signalling must not be affected

Friction coefficient with TRAM-SILENCE is not worse than on wet rails

Rough estimation of consumption:

ca. 0,1 g/m on the low rail


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Future aspects

Demand for these products will increase because the problem awareness is increasing

Application changes over more and more to automatic lubricators

We shoul actively discuss these problems with our customers. Their problems are waiting for solutions.

We should not talk about Rail Head Lubrication, but about Rail Head Treatment.

There is a huge potential for these products.


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Noise reduction in Railway Traffics

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