KZN Rail Damper
The KZN rail damper is a rail damping system installed on both sides of the rail web. It effectively attenuates rail vibration, reduces wheel-rail impact noise radiation, minimizes wheel-rail wear, and lowers maintenance frequency. Proven to decrease track noise by over 5dB, it significantly improves vibration attenuation rates and controls rail corrugation. With minimal components and easy installation, it is compatible with various rail fasteners, vibration mitigation measures, and operational conditions—suitable for both new line construction and existing line retrofits.
Performance Indicators:
|
No. |
Items |
Unit |
Technical Index |
Test Standard |
|
|
1 |
Hardness (Shore A) |
- |
45～80 |
GB/T 531 |
|
|
2 |
Tensile Strength |
MPa |
≥13.0 |
GB/T 528 |
|
|
3 |
Elongation at Break |
% |
≥300 |
||
|
4 |
Compression Set (70°C, 22h) |
% |
≤30 |
GB/T 7759
|
|
|
5 |
Volume Resistivity |
Ω.cm |
≥108 |
GB/T 1692 |
|
|
6 |
Thermal Air Aging (70°C, 72h) |
Tensile Strength |
MPa |
≥11 |
GB/T 3512 |
|
Elongation at Break |
% |
≥200 |
|||
|
Hardness Change |
% |
≤10 |
|||
|
7 |
Ozone Resistance Test (40°C, 50pphm, 70h, 7× magnification) |
/ |
No cracking |
GB/T 7762 |
|
|
8 |
Volume Expansion Ratio （23℃，70h） |
ASTM3# |
% |
≤100 |
GB/T 1690 |
|
ASTM3# |
% |
≤20 |
|||
|
Overall Technical Specifications for Rail Damper |
|
|
Item Name |
Technical Specification |
|
Vibration Reduction |
Effectively reduces track noise radiation 5-7 dB and decreases rail vibration by 7-10 dB |
|
Fatigue Performance |
Withstands 3 million cycles of fatigue impact testing without loosening or detachment |
|
Installation Interface |
Highly compatible and customizable with various rail fasteners and other vibration reduction measures |
|
Anti-Corrosion Method |
Silver-white Dacromet closed coating layer, meeting Grade 9 requirements for 360h neutral salt spray test |
The product features non-adhesive mechanical fixation for quick installation, broadband vibration and noise reduction with high/low temperature adaptability, multi-degree-of-freedom tuned absorption to mitigate rail corrugation, as well as easy installation and maintenance.
