发明名称 |
Herstellungsverfahren einer Zündkerze |
摘要 |
A method for producing a spark plug, the spark plug comprising a center electrode, a metal shell and an alumina ceramic insulator disposed between the center electrode and the metal shell, wherein at least part of the surface of the insulator is covered with a glaze layer, the method comprising the steps of: preparing a plurality of kinds of element glaze powders wherein each kind of the element glaze powders has a different dilatometric softening point and a different linear expansion coefficient compared to other kinds of element glaze powders; coating a surface of the insulator with the plurality of kinds of element glaze powders so as to form a glaze powder layer; and baking the glaze powder layer to the surface of the insulator so as to form the glaze layer by heating the glaze powder layer. <IMAGE> |
申请公布号 |
DE60231275(D1) |
申请公布日期 |
2009.04.09 |
申请号 |
DE2002631275 |
申请日期 |
2002.06.26 |
申请人 |
NGK SPARK PLUG CO. LTD. |
发明人 |
NISHIKAWA, KENICHI;SUGIMOTO, MAKOTO |
分类号 |
C03C8/04;H01T21/02;C03C8/10;C03C8/12;H01T13/20;H01T13/38;H01T13/52 |
主分类号 |
C03C8/04 |
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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