| 摘要 |
<p>PROBLEM TO BE SOLVED: To make the transmission of the feel at the time of impact to the user's hands possible and to help the user make progress in golf earlier by using a core material formed by packing a required number of small pieces of planar aluminum or small lumps of foamed aluminum into metal molds and compression molding the aluminum, then welding the small pieces or small lumps to each other by energization as a head body. SOLUTION: The head body 2 of the wood club head 1 for golf consists of the core material formed by packing the small pieces of the planar aluminum or small lumps of the foamed aluminum into the metal molds and compression molding the aluminum, then welding the small pieces or the small lumps to each other by energization. At this time, the required number of the small pieces of the planar aluminum or small lumps of the foamed aluminum entangled with thermosetting adhesives may be packed into the metal molds and may be thermocompression molded. The sizes and number of the small pieces of the planar aluminum or the small lumps of the foamed aluminum are preferably so selected that the sp. gr. after the compression molding attains about 0.9 and more adequately, at least the face and sole surfaces of the head body are covered with another materials.</p> |
