Casting method for manufacturing a golf club head having an embedded heterogeneous material

A method for manufacturing a golf club head having an embedded heterogeneous material, comprising:

• placing a shell mold on a rotary table, with the shell mold comprising a crucible portion, a casting portion, and a coupling portion in intercommunication between the crucible portion and the casting portion, with the casting portion comprising a cavity;
• partially embedding a heterogeneous material in the casting portion of the shell mold, wherein the heterogeneous material comprises an embedded portion embedded in the casting portion of the shell mold and a non-embedded portion remaining in the cavity of the casting portion;
• placing a metal ingot in the crucible portion of the shell mold;
• melting the metal ingot in the crucible portion of the shell mold into molten metal in a vacuum environment with an activated heater, with the activated heater surrounding the crucible portion of the shell mold and heating the crucible portion;
• rotating the rotary table, causing the molten metal to flow into the cavity of the casting portion under a centrifugal force generated by rotation;
• enclosing the non-embedded portion of the heterogeneous material with the molten metal;
• gradually slowing down the rotary table after the molten metal cools and solidifies until the rotary table stops;
• destroying the shell mold after the molten metal completely solidifies to obtain a casting comprising a cast product portion;
• separating the cast product portion from the casting to obtain a cast product of a golf club head, with the embedded portion protruding from an outer periphery of the cast product of the golf club head;
• and
• milling the outer periphery of the cast product of the golf club head to remove the embedded portion that protrudes from the outer periphery of the cast product of the golf club head.