| 摘要 |
Method for manufacturing a face member 60 for a golf club 40 including forging a metal bar into a face member 60 configuration and chemically etching the face member 60 to uniformly remove 0.05 mm to 0.38 mm of material therefrom. The face member 60, of predetermined thickness, is placed in an acidic bath to uniformly remove material from all surfaces of member 60. The forging process (Figs 8 and 8A) may involve multiple heating and pressing of a metal bar to obtain the final forged member 60. The heating is preferably performed at temperature of less than 1000 degrees C for less than twenty minutes. After etching, a final heating, at less than 600 degrees C, and pressing, at a lower than any previously used pressure, may be given to give proper roll and bulge. Face member 60 may have a striking plate 72 with concentric circular regions of varying thickness (Fig 6, 102, 104, 106, 108), the thickest part being in the centre. Titanium is the preferred metal. |
