Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of rail pads in railway in China, also supports customized service with low price. Please feel free to buy cheap rail pads in railway made in China here from our factory.
Rail pads can prevent rail sleeper abrasion and the crushing of the sleeper under the rail foot. Rubber rail pads are normally designed to a specified load-deflection characteristic. The initial stiffness of the rail pad is designed to be low so that that their deformations under the springs toe loads is quite substantial. This ensures that the rail pad remains in intimate contact with the rail despite any vertical movements of the latter. When the wheel is over the pad, the rail pad stiffness must be high to prevent large movements which can result in the metal spring becoming loose. Such a load-deflection characteristic can be obtained by introducing grooves in the rubber rail pads. Rubber pad or grooved rubber rail pad are made up of rubber or plastic to dampen the shocks of vibrations of a passing train. Next, I will show you more about three types of rail pads widely used in railway system.
Types of materials for rail pads
After years of experience in rail pad manufacturing, we have developed a range of high-performance elastic rail pads for stiffness requirements and various application areas-from trams through standard gauge railways to heavy haul lines, especially rail pads for E-clip rail fastening systems and SKL type rail fastening systems with material of HDPE/EVA/Rubber, with following properties respectively.
HDPE
| No. | Technical Parameter | Unit | Technical Requirement | Value |
|---|---|---|---|---|
| 1 | Density | g/cm3 | 0.95-0.98 | 0.95 |
| 2 | Tensile Strength | Mpa | ≥19 | 19 |
| 3 | Elongation | % | >80 | 150 |
| 4 | Melting Point | °C | 170-190 | 190 |
| 5 | Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| 6 | Hardness | A | ≥98 | 98(A) |
EVA: Polyethylene 80%, Vinyl Acetate 20%
| No. | Technical Parameter | Unit | Technical Requirement | Value |
|---|---|---|---|---|
| 1 | Density | g/cm3 | 0.95-0.98 | 0.95 |
| 2 | Tensile Strength | Mpa | ≥15 | 16 |
| 3 | Elongation | % | >500 | 550 |
| 4 | Melting Point°C | °C | 170-190 | 170 |
| 5 | Insulation Resistance | Ω | ≥1×1010 | 5.0 ×1010 |
| 6 | Hardness | A | ≥90 | 92(A) |
Rubber
| No. | Technical Parameter | Unit | Value |
|---|---|---|---|
| 1 | Stiffness | KN | 90-130 |
| 2 | Hardness Shore A°C | °C | 72-80degree |
| 3 | Electronic Resistance | Ω | ≥ 106 |
| 4 | Tensile Strength before Aging | Mpa | ≥12.5 |
| 5 | Elongation before Aging | % | ≥250 |
The rail pad laid under the rail is used to guarantee:
The load distribution covering a larger surface area
Reducing load concentration and usage fatigue stress
Even contact area between the rail and supporting components
Reducing noise and structural vibrations
Sealing function between the top support and rail bottom
Reducing rail wearing and relevant supporting components
Gnee Rail owns the most engineers for rail pad development, design, production and inspection, with annual production capacity reaching up to 2000, 000 pieces. What's more, rail pads for high speed rail lines are our featured products, including both the elastic rubber plates and height adjustment pads.
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