Patent ID: 9545545
Date: 2017-01-17
CPC Classifications: A63B,B22C,B22D

Claim:
1. A method for manufacturing a high-strength steel wooden golf head, comprising: placing a shell mold on a rotary table, with the shell mold comprising a crucible portion and a cavity portion in communication with the crucible portion via a coupling portion, with the cavity portion comprising a hosel-shaping region, a face-shaping region, a heel-shaping region, a sole-shaping region and a toe-shaping region, with the hosel-shaping region, the face-shaping region, the heel-shaping region, the sole-shaping region and the toe-shaping region interconnecting with each other; placing at least one metal ingot in the crucible portion of the shell mold; melting the at least one 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 portion of the shell mold under a centrifugal force generated by rotation; gradually slowing down the rotary table after the molten metal cools and solidifies; destroying the shell mold after the molten metal completely solidifies, obtaining a casting comprising a cast product portion; and separating the cast product portion from the casting to obtain at least one casting product of the wooden golf head having a hosel, a face, a heel, a sole and a toe corresponding to the hosel-shaping region, the face-shaping region, the heel-shaping region, the sole-shaping region and the toe-shaping region, respectively; wherein the at least one casting product of the wooden golf head has a tensile strength of 240-350 ksi and a minimum thickness of 1.4-1.8 mm not including a groove depth of the face.