High Speed Rail Brake Block

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Model NO.: GPI139
Main Market: South America, North America, Eastern Asia, Northern Europe
Trademark: GPI
Transport Package: Carton
Specification: 10000000+
Origin: China
HS Code: 8708301000

Specifications

 

According to customers` drawings, for train or wagon 

Heavy Duty Truck.Train.Bus,Automobile,petroleum drilling machine.

Cast iron HT200

Composite material

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

2.Advantage:

--Composite friction material bearing high energy braking;

--High coefficient of friction and stability,

--small heat fade for coefficient of friction,

--Temperature insensitiveness,

--Develop according to the samples or drawings

--Certification:ISO9001-2000

 

4. The HGM - A high friction composition brake shoe steel back and friction body two parts.

Brake shoe shape size (mm) :

(1) the steel back of outer arc: R450

(2) brake shoe width: 820-1

(3) the thickness of the brake shoe: 45

 

5. The steel back is made of Q235A steel manufacturing, steel plate performance shall comply with the provisions of GB/T700.

 

6. Brake shoe is made up of steel back and friction.Friction main raw material for: phenolic resin, nitrile rubber, steel fiber,

reduced iron powder, graphite, etc.

 

7. The friction performance component of the learning performance and friction wear performance of two parts.

 

The mechanical properties shall comply with:

Table 1 physical and mechanical performance of the brake shoe

 

Unit performance indicators

G/cm3 density less than nominal worth plus or minus 5%

The compression strength of 25 Mpa or greater

The impact strength acuity 2.0 kJ/m2

The compression modulus of Mpa to 1.3 * 103 or less

Rockwell hardness (HRR) 90 or less

Water absorption percentage < 1.5%

Oil absorption percentage < 1.5%

 

Brake friction wear performance should be consistent with:

Table 2.The change of the instantaneous friction coefficient range (20 kn brake shoe pressure)

Speed (km/h) 0 10 20 30 to 40 50 to 60

The maximum 0.63 0.602 0.558 0.546 0.515 0.482 0.471

Standard 0.48 0.46 0.43 0.42 0.39 0.37 0.36

The minimum 0.42 0.40 0.40 0.36 0.33 0.32 0.37


High Speed Rail Brake BlockHigh Speed Rail Brake BlockHigh Speed Rail Brake Block

PTFE Compensator

PTFE compensators are an essential component in piping systems that are designed to handle high temperatures, pressure fluctuations, and corrosive media. These compensators are made from PTFE (polytetrafluoroethylene), which is a highly durable and chemically resistant material that can withstand extreme temperatures ranging from -200°C to +260°C.
PTFE compensators are designed to absorb thermal expansion and contraction in piping systems, which can cause stress and damage to the pipes if left unchecked. When the temperature of the piping system changes, the PTFE compensator expands or contracts to compensate for the thermal expansion or contraction, thereby reducing the stress on the pipes and preventing damage.
PTFE compensators are also used to absorb vibration and noise in piping systems, which can be caused by the flow of fluids or gases. The PTFE material used in these compensators has excellent damping properties, which help to reduce the vibration and noise levels in the piping system.

Ptfe Compensator,Ptfe Bellows Expansion Joint,Metal Hose,Expansion Joint Compensator

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