Common Casting Processes for Steel Castings

Common Casting Processes for Steel Castings

1. Pattern Making:Wooden patterns are typically created based on engineering drawings. Once the pattern is completed, it serves as a template for molding.
2. Sand Mixing:In preparation for molding, old and new sand are mixed in specific proportions, along with appropriate amounts of clay to create a molding compound.
3. Mold Making:

• Pit Molding:The molding process involves creating a cavity in the sand that corresponds to the shape of the casting.
• Core Making:Internal shapes of the casting are produced using cores made of sand.
• Mold Assembly:The cores are placed within the mold cavity, and the mold halves are clamped together.

1. Metal Melting:

• Charge Preparation:The necessary metallic elements are proportioned and charged into the melting furnace.
• Melting:The charge is melted to produce liquid metal.

1. Pouring:

• Ladle Filling:The molten metal is poured into a ladle.
• Pouring:The molten metal is poured into the mold cavity, ensuring that the mold is completely filled.

1. Cleaning:

• Shakeout:After solidification, the casting is removed from the mold and the adhering sand is shaken off.
• Shot Blasting:The casting is subjected to shot blasting to remove any remaining sand or scale.
• Inspection:The casting is visually inspected for defects. For more stringent requirements, non-destructive testing (NDT) is employed.

1. Inspection:

• Non-Destructive Testing (NDT):Castings are typically subjected to NDT methods to detect internal flaws or defects.

CPTC offers custom steel casting processing services based on customer drawings and samples.