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Standard GB / T 9439-1988 Composite Railway Brake Blocks

Categories Railway Brake Blocks
Brand Name: ZhongYue
Model Number: Composite Brake Block
Certification: ISO9001:2015
Place of Origin: China
MOQ: 2000pcs
Price: Negociable
Payment Terms: T/T, 30% in advance
Supply Ability: 30,000 pcs per month
Delivery Time: 15-30 work days after getting payment
Packaging Details: wood box / cutomized
Product Name: Brake Block
Application: Heavy Duty Truck.Train
Type: Customized
Material: Composite material
Surface: Plain (oiled), Colored
Standard: GB/T 9439-1988
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    Standard GB / T 9439-1988 Composite Railway Brake Blocks

    Railroad Composite Brake Block For Train And Wagon Refer To Standard GB/T 9439-1988


    Product Name: Composite Brake Block


    Brief introduction:


    Our cast iron brake block enjoys many advantages including hardness, impact strength and so on. It consists of two parts, the cast iron and the steel support. Both the surface and core of the cast iron have the hardness within the range of 197< HB< 255.

    When facing subsequent impacts to the brake block or brake shoe, the steel support must remain intact and attached to the iron places. The connection bridge may possibly become detached but should not show any soundness defects. Separated from the brake shoe, the support must be able to withstand the bend test with cracking or breaking.


    Theory:


    The brake shoe are located on the wheel tread.

    when braking, two pieces of brake block clamp the wheel to make it stop.


    Brand

    ZHONGYUE

    Name

    Iron brake block

    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

    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


    Material Character:

    1. The materials of composite brake block consist of 3 main substances including reinforcing fiber, organic/inorganic filler and resin bound.
    2. It has a high level of uniformity.
    3. It can be separated from the backing plate.
    4. It contains no asbestos, lead, zinc or other mixtures.
    5. It also contains no toxic materials.
    6. The hardness of the material is lower than the wheel's.
    7. It causes no strong smell in friction.

    Backing plate:


    Backing plate for a trains' composite brake block must meet the following criteria. Firstly, it is made of ST-41 steel plate, and is constructed to transmit the braking force to the composite material. Secondly, there should be a binding structure between the composite material and backing plate, thus forming into a integrated unit and ensuring sufficient bending strength and stiffness.


    Process: Casting:



    Test procedure:

    1. Vernier caliper or other methods are used to test the dimension of the brake block.
    2. Laboratory test

    Specific gravity test: standard ASTM D 792 or equivalent method
    Coefficient of friction test: Standard ASTM D 1894 or equivalent method
    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


    Performance:

    1. Excessive wear won't be caused on the surface of the wheel and the composite brake block.
    2. The composite brake block will not cause the wheel porous or cracked.
    3. It won't stick at the wheel during braking therefore won't cause uneven wheel surface.
    4. It won't cause wheel slipping during full braking in wet conditions.

    Advantage:

    1. Composite friction material bearing high energy braking;
    2. High coefficient of friction and stability,
    3. Small heat fade for coefficient of friction,
    4. Temperature insensitiveness,

    Disadvantage:


    Produce a stench when tight.



    Function:


    Our composite brake block is an ideal replacement of the metallic (gray cast iron) brake block. Composite brake block features motion to the wheel and well fitness between the brake block and brake block shoe (brake holder).


    Package:

    1. Wooden box
    2. In according with client's requirement


    Similarity:


    Cast iron brake shoe in different types


    Classification:

    1. High-P brake shoe
    2. Low-P brake shoe

    Application:




    Sale Range:

    1. Rail fastening system
    2. Dog spike / Screw spike
    3. Bolt set
    4. Elastic clamp
    5. Rail anchor
    6. Rail shoulder
    7. Fish plate
    8. Tie plate
    9. Plastic / Rubber parts
    10. Brake shoe
    11. Steel rail
    12. New wood sleeper

    Should you have any question, pls feel free to contact with us.


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