发明名称 |
Electrode for a spark plug in which a firing tip is laser welded to a front end thereof |
摘要 |
In an electrode for a spark plug, an elongated blank metal is made of a nickel-based alloy and including a front surface. A firing tip is provided from a slug made of a noble metal, the slug being concentrically placed on the front surface of the elongated blank metal and laser beam welded to thermally melt the entire slug and thereby produce a thermal weld, so that the front surface of the elongated blank metal is partly fused together with the slug to form a melted portion with the front surface and the slug so as to contain the front surface within the melted portion in the range of 0.5 wt % to 80.0 wt %.
|
申请公布号 |
US5461276(A) |
申请公布日期 |
1995.10.24 |
申请号 |
US19950371577 |
申请日期 |
1995.01.12 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
MATSUTANI, WATARU;KAGAWA, JUNICHI |
分类号 |
H01T13/20;H01T13/39;H01T21/02;(IPC1-7):H01T13/20 |
主分类号 |
H01T13/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|