Train and Wagon Cast Iron Brake Block
AccordingÂ toÂ customers`Â drawings,Â forÂ trainÂ orÂ wagonÂ
HeavyÂ DutyÂ Truck.Train.Bus,Automobile,petroleumÂ drillingÂ machine.
CastÂ ironÂ HT200
ReferÂ toÂ standardÂ GB/TÂ 9439-1988
1.railÂ wayÂ compositeÂ BrakeÂ shoeÂ Material:
CompositeÂ material, highÂ frictionÂ compositeÂ brakeÂ shoe, lowÂ frictionÂ compositeÂ brakeÂ shoe
--CompositeÂ frictionÂ materialÂ bearingÂ highÂ energyÂ braking;
--HighÂ coefficientÂ ofÂ frictionÂ andÂ stability,
--smallÂ heatÂ fadeÂ forÂ coefficientÂ ofÂ friction,
--DevelopÂ accordingÂ toÂ theÂ samplesÂ orÂ drawings
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
Industrial caster mainly refers to a kind of caster product used in factories or mechanical equipment. It can be made of advanced imported reinforced nylon (PA6), super polyurethane and rubber. The whole product has high impact resistance and strength.
There are many kinds of industrial casters, which are different in size, model and tire surface. Choose the right wheel under the following conditions:
1. Site environment.
2. Product capacity
3. The working environment contains chemicals, blood, grease, engine oil, salt and other substances.
4. All kinds of special climate, such as humidity, high temperature or severe cold
5. Requirements for shock resistance, collision resistance and quiet driving.
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Kaiping City Sunnywah Electronic CO.,LTD , https://www.knightcasters.com