发明名称 HARD DISK CLAMP RING AND ITS MANUFACTURING METHOD
摘要 PROBLEM TO BE SOLVED: To obtain a clamp ring excellent in shape accuracy and form freezing by a simplified manufacturing method. SOLUTION: By using complex phase organization stainless steel containing a mixture of soft ferrite and hard martensite as a material, an opening 21 fitted into a spindle hub is formed in the center of a ring main body 20, and a press rib 22 is formed in the circumferential direction of a peripheral edge. The complex phase organization stainless steel is a material balanced between processing characteristics and strength, and has excellent spring characteristics excellent in low temperature ageing after formation. COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2007257784(A) 申请公布日期 2007.10.04
申请号 JP20060083099 申请日期 2006.03.24
申请人 NISSHIN STEEL CO LTD 发明人 YU SHINPEI;FUJIMOTO HIROSHI
分类号 G11B17/038 主分类号 G11B17/038
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