Railroad Friction composite brake block / brake shoe
Brakes are used on the cars of railway trains to enable deceleration, control acceleration (downhill) or to keep
them standing when parked. While the basic principle is familiar
from road vehicle usage, operational features are more complex
because of the need to control multiple linked carriages and to be
effective on vehicles left without a prime mover. Clasp brakes are one type of brakes historically used on trains.
|Name||Railway Friction composite brake block / brake shoe / brake rail
|Type||According to customers’ drawings, for train or wagon|
|Application||Heavy Duty Truck.Train.Bus,Automobile,petroleum drilling machine.|
|Material||Cast iron HT200||Composite material|
|Details||Refer to standard GB/T 9439-1988|
1.rail way composite Brake shoe Material:
Composite material, high friction composite brake shoe, low
friction composite brake shoe
--Composite friction material bearing high energy braking;
--High coefficient of friction and stability,
--small heat fade for coefficient of friction,
--Develop according to the samples or drawings
Chemical compositions of steel support
C % < 0.13%,
S % < 0.062%,
P % < 0.062%.
1. Physical and mechanical properties of composite
2. Operational heat
Our composite brake block won't melt or burn and continues to work
at a temperature of 250℃
It may burn but causes no flame at a temperature of ≥ 400℃.
3. Materials of cast iron railway brake block and composite railroad brake shoe
A. The materials of composite brake block consist of 3 main
substances including reinforcing fiber, organic/inorganic filler
and resin bound.
B. It has a high level of uniformity.
C. It can be separated from the backing plate.
D. It contains no asbestos, lead, zinc or other mixtures.
E. It also contains no toxic materials.
F. The hardness of the material is lower than the wheel's.
G. It causes no strong smell in friction.
A. Excessive wear won't be caused on the surface of the wheel and
the composite brake block.
B. The composite brake block will not cause the wheel porous or
C. It won't stick at the wheel during braking therefore won't cause
uneven wheel surface.
D. It won't cause wheel slipping during full braking in wet
6. Test procedure
A. Vernier caliper or other methods are used to test the dimension
of the brake block.
B. Laboratory test
Specific gravity test: standard ASTM D 792 or equivalent method
Coefficient of friction test: Standard ASTM D 1894 or equivalent
Hardness test: standard ASTM D 785 or equivalent method
Shear resistance test: standard ASTM D 732 or equivalent method
Press test: Standard ASTM D 695 or equivalent method
Bending test: Standard ASTM D 790 or equivalent method
Thermal properties test: standard ASTM D 177 or equivalent method.
If you have any other models of rail/ rail fastener, welcome to
Suzhou Zhongyue Railway Material Co., Ltd.
Add: No. 199, HuanLou Rd, Econoic&Development Zone, 215300,
KunShan, JiangSu, China