How is the performance of Rail Rubber Pads in high-temperature conditions?

 

In high-temperature conditions, the performance of standard rail rubber pads degrades because the material softens, which decreases stiffness and worsens vibration isolation. This can lead to higher rail vibrations and noise, as well as accelerated aging of the material. However, modern rubber pads are often designed with specific formulations to withstand extreme temperatures and maintain performance, and composite pads (such as cork-rubber) can offer better high-temperature stability compared to traditional rubber.

 

 

Rubber Rail Pad
Technical Parameter	Unit	Value
Stiffness	KN	90-130
Hardness Shore A	℃	72-80 degree
Electronic Resistance	Ω	≥ 106
Tensile Strength before Aging	Mpa	≥12.5
Elongation before Aging	%	≥250

 

Performance impacts of high temperatures

 

• Softening and reduced stiffness: Polymers and rubber soften as temperatures rise, leading to a decrease in the pad's stiffness.

 

• Worsened vibration isolation: Softer pads are less effective at isolating vibrations, which can result in increased noise and vibration radiated from the rails.

 

• Accelerated aging: High temperatures accelerate material degradation processes like oxidation, which shortens the lifespan of the pad.

 

 

Solutions and mitigating factors

 

• Modern material design: Many modern rubber pads are formulated to be more resilient to temperature fluctuations and maintain their structural integrity.

 

• Composite pads: Combining materials like cork with rubber can create a composite pad that is more stable at high temperatures than rubber alone.

 

• Targeted maintenance: Regular inspection and maintenance are crucial to address performance degradation and ensure the pads' functions are preserved.

 

The Function of Rail Pads

 

• The function of rail pads in railway track systems is to provide a resilient layer between the rail and the baseplate to reduce noise, vibration, and wear and tear on the track system. Rail pads act as a cushioning effect that helps absorb the impact of passing trains, which can reach speeds of up to hundreds of kilometers per hour.

 

 

• Rail pads reduce vibration by absorbing the energy created by the impact of passing trains. The energy absorbed by the rail pads is then dissipated into the ground, reducing the amount of vibration transmitted to nearby structures and the surrounding environment. This reduction in vibration is essential for minimizing noise pollution and improving the safety and comfort of passengers.

 

As a professional rubber rail pad manufacturer GNEE RAILWAY RAILWAY can produce various standards of rubber rail pads and other rail fasteners. If you want to build a railway line, do not hesitate to contact us, we can supply all types of rubber rail pads with different materials. If necessary, we can make customized rubber rail pad production.

 

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