The sand casting process involves the use of a furnace, metal, pattern, and sand mold. The metal is melted in the furnace and then ladled and poured into the cavity of the sand mold, which is formed by the pattern.
National standard for cast iron ductile iron (GB1348-2009)
Production process (electric furnace production of ductile iron castings)
Pig iron into the furnace smelting - molten iron into the alloy ball \ inoculation treatment - casting cavity - box cleaning - heat treatment (if necessary)
Chemical composition for ductile iron castings must be guaranteed to reach the provisions of ductile cast iron grade and the corresponding mechanical properties is usually decided by the manufacturers themselves. Therefore, in the formulation of the technical requirements of ductile iron castings, generally do not put the chemical composition as the main technical requirements. China has formulated the "Ductile Iron Castings" standard (GB1348----1988), and clearly defined the requirements of ductile iron castings. In general, the technical requirements of ductile iron castings should include: mechanical properties, geometry and dimensions.
Advantages of Ductile Iron Casting :
- Ductile Iron Casting provides Higher Tensile Strength
- Less Deflection Under Load Conditions
- No Straightening Required in Most Instances
- No Problems With Hot Tears and Cracks
- Good Machinability
- Easier Feeding of Difficult Designs
Ductile Iron Casting is particularly well suited for :
- Pump - Gears and Rollers
- Spring Hangers
- Suspension Parts
- Wheel Hubs
- Bearing Caps
- Universal Joints
- Threadless Connectors and Flanges
- Various Automotive and Agricultural Items.
Ductile iron with 4.5tons Ductile iron with 5tons Foam moulds sand blasting
The used material : GGG200;GG250;GG300;GG350;GG400;ASTM A716;ASTM A536,ec