Method of manufacturing a spark plug electrode

Details Method of manufacturing a spark plug electrode Method of manufacturing a spark plug electrode

1994-06-24

1995-10-24

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

445 7, B23K 2600, H01T 2102

Patent

active

054612101

ABSTRACT:
A method of manufacturing a spark plug electrode, wherein a composite column is provided to have a heat-conductor core embedded in a metallic clad by means of extrusion. A firing tip is provided from a slug which is made of a noble metal. The slug is concentrically placed on an end surface of the metallic clad, and a laser beam welding is applied on the slug to thermally melt the entire the slug so that the end surface of the metallic clad is partly fused into the slug in the range of 0.5 wt % to 80.0 wt %.

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