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Graphite Molds For Metal Casting

Graphite Molds for Metal Casting cannot be wetted by most molten non-ferrous metals and alloys. Ferroalloys such as cast iron form wet graphite due to reaction with carbon, thereby forming carbide Fe3c.

    1. Graphite Molds For Metal Casting
    1. Graphite Molds For Metal Casting
    1. Graphite Molds For Metal Casting

Low Wetting

In order to prevent the casting removed from the mold from sticking, the material should have good adhesion to the solidified metal. This is achieved by low wetting of the mold by liquid metal. Graphite molds for metal casting cannot be wetted by most molten non-ferrous metals and alloys. Ferroalloys such as cast iron form wet graphite due to reaction with carbon, thereby forming carbide Fe. Graphite is also wetted by an alloy containing nickel (more than 6% of nickel), zinc or tin.

High Thermal Conductivity

The heat released when cooling and solidifying the cast metal should be removed from the mold. The amount of heat transferred through the mold in a time unit determines the solidification speed and pull-out speed of the casting. The thermal conductivity of the mold material should be high enough to provide rapid heat dissipation. The thermal conductivity of graphite Molds for Metal Casting is in the range of 560-960 Btu*in/hr*ft2*F (80-140 W/m*K), which is equivalent to the thermal conductivity of metal: aluminum 1540 Btu*in/hr*ft2 *F (222 W/m*K); steel 450 Btu*in/hr*ft2*F (65 W/m*K). The thermal conductivity of graphite depends on the temperature: when the temperature rises to 1300 °F (704 °C), it will drop to half.

Self Lubrication

Graphite is a solid lubricant. The low friction between the mold surface and the solidified metal ensures that the casting is smoothly removed (extracted) without cracks and minimizes the thickness of the defective skin. The special layered crystal structure of graphite determines its self-lubricating properties and provides low friction without increasing the amount of lubricating oil.

Good Mechanical Strength

The mechanical strength (tensile strength, compressive strength, flexural strength) of graphite increases with increasing temperature compared to other materials.

Good Processability

Graphite molds for metal casting are easy to process with graphite. Through milling, turning, sawing, grinding and surface finishing, complex shape molds with tight tolerances are available. Finishing (grinding or polishing) of the inner mold surface is important to reduce the wet and friction of the material. A good outer surface quality ensures a minimum air gap between the mold and the water jacket for better heat transfer.


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Products
  • Graphite Processing Parts
    1. Graphite Bolt
    2. Graphite Box
    3. Graphite Heat Exchanger
    4. Graphite Ingots
    5. Graphite Pipe
    6. Graphite Plate
    7. Graphite Products For Solar Energy Systems
    8. Graphite Rod
    9. Graphite Ring
    10. Graphite Rotor
    11. Graphite Screw
    12. Graphite Shaft
    13. Graphite Sheet
    14. Graphite Tube
    15. Graphite Bearing
    16. Graphite Electrodes
  • Graphite Crucible
    1. Graphite Crucible For Melting Furnace
    2. Graphite Crucible For Melting Gold
    3. Graphite Crucible For Melting Jewelry
    4. Graphite Crucible For Melting Precious Metals
    5. Graphite Crucible For Melting Rare Metals
    6. Graphite Sintering Crucible For Lithium Industry
    7. Graphite Sintering Crucible Mould For Power Metallurgy And Hard Alloy
    8. Graphtie Crucible For Melting Silver
    9. Graphtie Crucible For Melting Steel
    10. Graphite Crucible For Melting Copper
  • Graphite Mold
    1. Graphite Ingot Mould For Nonferrous Melting
    2. Graphite Mold For Electric Discharge Machining
    3. Graphite Mold For Melting Glass
    4. Graphite Molds For Metal Casting
    5. Graphite Sintering Mold For Diamond Tools
    6. Graphite Sintering Mould For Lithium Iron Battery
  • Carbon Brushes
    1. Copper Carbon Brushes
    2. Silver Carbon Brushes
    3. Electric Motor Carbon Brush
    4. Home Appliances Carbon Brushes
    5. Industrial Carbon Brushes
    6. Power Tools Carbon Brushes
  • Graphite Processing Parts
    1. Graphite Bolt
    2. Graphite Box
    3. Graphite Heat Exchanger
    4. Graphite Ingots
    Graphite Crucible
    1. Graphite Crucible For Melting Furnace
    2. Graphite Crucible For Melting Gold
    3. Graphite Crucible For Melting Jewelry
    4. Graphite Crucible For Melting Precious Metals
    Graphite Mold
    1. Graphite Ingot Mould For Nonferrous Melting
    2. Graphite Mold For Electric Discharge Machining
    3. Graphite Mold For Melting Glass
    4. Graphite Molds For Metal Casting
    Carbon Brushes
    1. Copper Carbon Brushes
    2. Silver Carbon Brushes
    3. Electric Motor Carbon Brush
    4. Home Appliances Carbon Brushes
  • Contact Us
    1. Kayson Graphite Industrial Co., Ltd
    2. E-mail.: sales@chinagraphiteproducts.com
    3. Phone: +86-1391862242
    4. Add.:No.880, Xinwen Road,JiaDing, Shanghai, China
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