Model NO.
HGM-A
Customized
Customized
Certification
ISO14001, ISO9001
Type
Train Brake
Friction Body
Polymer Material
Steel Plate
Q235A Steel
Thickness
45~50mm
Width
50~85mm
Length
300~400mm
Outer Arc
R450mm
Surface Treatment
Painting
Process
Cold + Hot Pressing
Axle Load
Max. 25t
Trademark
QL
Transport Package
W/CS
Specification
Composite
Origin
China
HS Code
8607210000
a. The adjustable range of friction coefficient , it is applicable to various running speeds.
b. The composite brake shoe provides high abrasion resistance and long service life, so as to greatly reduce the workload of brake shoe replacement and save the costs of maintenance and operation.
c. Without sparks when braking, it can avoid the iron powders generated during wear-and-tear and relieve the impacts on electric equipment.
d. It is of light weight, so it can be replaced conveniently and easily.
e. It causes small abrasion and no thermal crack on the tread.
f. The lower friction coefficient at high speed maintains sufficient braking force, improves the braking performance and shortens the braking distance.
g. The friction coefficient index can be fully increased. The composite brake shoe is combined with the small-diameter braking cylinder to save compressed air. When braking on high slope areas continuously, it may shorten the air recharge time, so as to improve the wagon safety when running on high slope areas.
h. The composite brake shoe won't result in rough tread, so it could reduce the noise level by 8~10dB.
2. Application:
Applicable for freight rolling stock speed at 120km/h, and axle load below 25t.
3. Technical Specification:
| Performance | Unit | Index |
| Compression strength | Mpa | ≥25 |
| Compression modulus | Mpa | ≤1.3*103 |
| Bending strength | Mpa | ≥8 |
| Impact strength | kj/m2 | ≥3.0 |
| Rockwell hardness | HRR | ≤100 |
| Density | g/m3 | ±5% deviation from the nominal value |
| Soluble content of acetone | % | ≤5 |
| Shear strength between friction body and steel back plate | Mpa | ≥1.20 |
| Tensile force of friction body and steel back plate | KN | ≥15 |
4. Product & Workshop:
Product
Workshop
5. Some Production Equipments & Testers:
Pressing Machine
Magnetic Particle Testing Machine
Temperature & Humidity Chamber
Electronic Universal Testing Machine
Thermal Gravimetric Analyzer
