发明名称 MANUFACTURING METHOD OF SPARK PLUG
摘要 <p><P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a spark plug capable of restraining lack of mutual welding between an electrode chip and a center electrode, boring of a laser welding part, or the like in welding the electrode chip to the center electrode, and of improving welding strength of a ignition part. <P>SOLUTION: The electrode chip 31' formed of, for instance, an Ir alloy is placed on a tip surface 3s of the center electrode 3 to form a laminated assembly 170, and the laminated assembly is irradiated with a laser beam LB to weld the electrode chip 31' to the center electrode 3. At that time, a chuck 11 formed of Cu is brought into contact with the center electrode 3 as a cooling material 11. The chuck 11 is cooled by a coolant 13 such as water. <P>COPYRIGHT: (C)2003,JPO</p>
申请公布号 JP2003249325(A) 申请公布日期 2003.09.05
申请号 JP20020048630 申请日期 2002.02.25
申请人 NGK SPARK PLUG CO LTD 发明人 MATSUTANI WATARU
分类号 B23K26/00;C22C5/04;C22C19/03;C22C19/05;C22C19/07;C22C27/04;C22C38/00;H01T13/20;H01T13/39;H01T21/02;(IPC1-7):H01T21/02 主分类号 B23K26/00
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