专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09899805B2 Method for manufacturing spark plug 有权
公开(公告)号：US09899805B2
公开(公告)日：2018-02-20
申请号：US15036607
申请日：2014-08-21
申请人： NGK SPARK PLUG CO., LTD.
发明人： Tomoaki Kato , Ryuichi Ohno
IPC分类号： H01T21/02 , H01T13/20
CPC分类号： H01T21/02 , H01T13/20 , H01T13/39
摘要： Provided is a method for manufacturing a spark plug, wherein at least one of a center electrode and the ground electrode includes an electrode base material and a columnar noble metal tip welded to the electrode base material. The method includes a laser welding step of applying a pulse oscillation laser to form a plurality of unit fusion portions on a peripheral area of a boundary between the electrode base material and the noble metal tip and welding the electrode base material and the noble metal tip. One unit fusion portion is formed by one-time laser irradiation. In the laser welding step, an irradiation axis of the laser is displaced from a central axis of the noble metal tip in a radial direction of the noble metal tip. When a diameter of the noble metal tip is denoted as a diameter A and an amount of displacement of the irradiation axis of the laser is denoted as X, A/20≦|X|≦A/4 is satisfied.

2. 发明申请

US20140175967A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20140175967A1
公开(公告)日：2014-06-26
申请号：US14235824
申请日：2012-06-08
申请人： NGK SPARK PLUG CO., LTD.
发明人： Tomoyuki Igarashi , Ryuichi Ohno , Tatsunori Yamada , Katsutoshi Nakayama
IPC分类号： H01T13/16
CPC分类号： H01T13/16 , F02P13/00 , H01T13/20 , H01T13/39
摘要： A spark plug has a center electrode having an electrode base member and a core material which is disposed in the electrode base member and which predominantly contains copper, and a noble metal tip disposed at a forward end of the center electrode, and a fusion portion formed between the noble metal tip, and the electrode base member and the core material. The fusion portion is in contact with the core material in a cross section which is parallel to the center axis of the center electrode and which passes through the center axis and the fusion portion. The fusion portion contains a component of the noble metal tip, a component of the electrode base member, and a copper component forming the core material.
摘要翻译：火花塞具有中心电极，该中心电极具有设置在电极基体中并且主要包含铜的电极基体和芯材，以及设置在中心电极前端的贵金属电极头和形成的熔融部分在贵金属端头与电极基体和芯材之间。熔接部与芯材以与中心电极的中心轴平行且穿过中心轴和熔融部的横截面接触。熔融部包含贵金属电极头的成分，电极基体的成分和形成芯材的铜成分。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式