Materials used in the manufacture of railway pads
|
Material |
Rubber, EVA, TPEE, HDPE, Composite material of steel plate and rubber |
|
Application |
43kg/m, 50kg/m, 60kg/m, 75kg/m,115RE, UIC54, UIC60, S49 |
|
Standards |
UIC, AREMA, TB/T2626-95 |
HDPE Materials: They have relatively high rigidity and poor dynamic mechanical properties, but they have good wear resistance and corrosion resistance.
|
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 |
℃ |
170-190 |
190 |
|
5 |
Insulation Resistance |
Q |
≥1×1010 |
3.5×1010 |
|
6 |
Hardness |
A |
≥98 |
98(A) |
EVA Materials: They have the advantages of light weight, high elasticity, good shock absorption performance, and sound insulation performance, and are gradually being applied in railway under-rail pads.
|
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℃ |
℃ |
170-190 |
170 |
|
5 |
Insulation Resistance |
Q |
≥1×1010 |
5.0×1010 |
|
6 |
Hardness |
A |
≥90 |
92(A) |
Rubber Materials: They have good elasticity, shock absorption performance, and insulation performance, and can effectively buffer the train load and vibration. However, rubber materials are prone to aging, and their service life is relatively short.
|
No. |
Technical Parameter |
Unit |
Value |
|
1 |
Stiffness |
KN |
90-130 |
|
2 |
Hardness Shore A℃ |
℃ |
72-80degree |
|
3 |
Electronic Resistance |
Q |
≥106 |
|
4 |
Tensile Strength before Aging |
Mpa |
≥12.5 |
|
5 |
Elongation before Aging |
% |
≥250 |
TPEE Materials: They have excellent flexibility at room temperature and low temperature, as well as excellent resistance to flexure cracking, high elasticity, and good anti-stress relaxation and creep performance. They have a good, comprehensive performance.
Types of Railway Pad
Classification by Laying Position: Taking the steel base plate as the boundary, it can be divided into the elastic cushion on the steel base plate and the elastic cushion under the steel base plate.
Classification by Structure: There are flat plate structures, groove structures, and plate-nail structures. The elastic pads with groove and plate-nail structures provide high resilience through flexural and shear deformations. They have a fast elastic recovery speed and a low dynamic stiffness, which can give full play to the comprehensive usage effect of the elastic cushion.
GNEE RAIL is an enterprise manufacturing railway fasteners, whose products cover fields of railway, urban rail, mining, etc.
We offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Rail Screw Spike, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt,etc. which are all CRCC and ISO certificated.
Click here to obtain the detailed product catalog of GNEE RAIL.