发明名称 |
METHOD FOR MANUFACTURING A CENTER ELECTRODE FOR A SPARK PLUG |
摘要 |
METHOD FOR MANUFACTURING A CENTER ELECTRODE FOR A SPARK PLUG A method of manufacturing an electrode (40) for a spark plug. A cylindrical length (10) of inconel wire has a first end (12) with a flat surface thereon. The inconel wire (10) is placed in a die and partially extruded to create a cylindrical bore (16) that extends from a second end (l4) toward the first end (12). A strip of platinum (18) is welded to the flat surface (12) after which a chamfering (22) operation removes any excess platinum and weld flash to produce a cylindrical tip (18) on said first end. The inconel wire (10) with its platinum tip (18) is placed in a die and struck with a force causing the cylindrical bore (16) to be extended while the platinum flows (24) along the chamfer (22) to completely cover the weld (20). A copper core (26) is inserted in said cylindrical bore (16) and then further struck to extrude the resulting electrode (36) to a desired length. |
申请公布号 |
CA1298460(C) |
申请公布日期 |
1992.04.07 |
申请号 |
CA19870546265 |
申请日期 |
1987.09.08 |
申请人 |
ALLIED CORPORATION |
发明人 |
MYERS, MARTIN G.;BARRETT, WILLIAM A. |
分类号 |
H01T13/20;H01T21/02 |
主分类号 |
H01T13/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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