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Cast Aluminum Fire Protection Equipment

Cast Aluminum Fire Protection Equipment
Material: A356, A380, aluminum alloy or according to your requirements
Casting Weight: 7KG
Casting Process: Gravity Casting
Standards: ASTM,AISI,DIN,BS,JIS
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Product Details

ManufactureOEM/ODM
Surface treatmentMill finished, anodizing, powder coating, brushing, polishing
Dimension ToleranceCT8
Surface RoughnessRa6.3-12

Minimum Order  Quantity

100

Packaging Details

Carton and Wood

Production

100000 Pieces
Delivery Time4 weeks
Payment TermsT/T, LC
Price$1-500
















Introduction:

Cold insulation: 

this defect is usually found in large thin-walled castings on horizontal surfaces, as well as at the final confluence of the alloy. After casting molding, it can be found by inspection.


Causes:

1. Mold temperature is too low;

2. Too low temperature of aluminum liquid;

3. Poor mold exhaust;

4. Poor casting system design, small number of internal sprue and small section;

5. Too slow casting speed or interruption of pouring;

6. The casting design wall thickness is too thin or lacks proper rounded corners.


Prevention measures:

1. Properly increase the mold temperature;

2. Appropriately increase the casting temperature of aluminum liquid;

3. Vent groove or exhaust plug shall be set on the part where gas is not easy to be discharged to keep good exhaust;

4. Appropriately increase the number of internal sprue and the section of internal sprue;

5. Properly increase the casting speed to avoid the interruption of aluminum liquid pouring;

6. Reasonable minimum wall thickness and casting round Angle shall be designed according to the technological requirements of casting design.


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