| 摘要 |
<p>PURPOSE:To achieve monobloc molding of a golf club head which is formed of a metal with small specific gravity, high intensity, and high intrinsic sound velocity. CONSTITUTION:An inorganic short fiber mold and a water soluble core made of a material mainly composed of a salt are preheated and set in a given location of a metal mold which has been heated. Melted light metal is poured into the metal mold to cast a head main body at high pressure. Then, water is poured into the said head main body to dissolve and remove the water soluble core which has filled inside the head main body.</p> |
