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1. 发明申请

US20130143690A1 GOLF CLUB HEAD AND METHOD FOR MANUFACTURING THE SAME 有权
标题翻译：高尔夫俱乐部头及其制造方法
公开(公告)号：US20130143690A1
公开(公告)日：2013-06-06
申请号：US13684861
申请日：2012-11-26
申请人： K. K. ENDO SEISAKUSHO
发明人： Tomoyuki Sakai , Junichi Amano , Masaru Kawauchi
IPC分类号： A63B53/04 , B21J5/06 , B21K17/00
CPC分类号： A63B53/047 , A63B2209/00 , B21J5/06 , B21K17/00 , B21K23/00
摘要： The present invention provides a golf club improved in ball hitting sound and ball hitting feeling and its manufacturing method. First, low-carbon steel is subjected to press processing of hot forging to form portions of irregularity on the face on a side of a hitting surface. Then, when there are projecting portions in the portions of irregularity, only the projecting portions are subjected to press processing of cold forging to crush the projecting portions to be flat. Then, the surface is slightly smoothed by machining to be flat and crystal grains at the portions of irregularity and the area therearound are pressed to be fined, thereby enhancing the hardness and forming fiber flows parallel to the hitting surface. A part of the hardened face becomes harder than the hardness of a base material before press processing by 10% or more within a range of 1 mm in a depth.
摘要翻译：本发明提供一种改进了击球声和球击感的高尔夫球杆及其制造方法。首先，对低温钢进行热锻的冲压加工，以在击打面的一侧的面上形成不规则的部分。然后，当在凹凸部分中存在突出部分时，仅对突出部分进行冷锻的冲压加工，以将突出部分压扁以使其平坦。然后，通过机械加工平坦化而使表面稍微平滑，并且在不规则部分处的晶粒和其周围的区域被压制成精细化，从而提高硬度并形成平行于击打面的纤维流。硬化面的一部分在深度为1mm以下的压延加工10％以上的基材的硬度变得更硬。

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