Method of making a ground electrode for a spark plug

Details Method of making a ground electrode for a spark plug Method of making a ground electrode for a spark plug

1993-09-10

1995-03-07

Bradley, P. Austin

Electric lamp or space discharge component or device manufacturi

Process

Spark plug or spark gap making

21912164, H01T 2102

Patent

active

053952731

ABSTRACT:
In a method of making a spark plug electrode, an electrode blank is prepared to have a firing portion at one end of the electrode blank. A recess is provided at the firing portion of the electrode blank. A noble metal material is placed in the recess. Laser beams are applied on the noble metal material in the recess to melt 70%.about.100% by weight of the noble metal material to form a noble metal tip. A component of the electrode blank is formed from a clad metal wherein the clad metal is thermally fused to the noble metal tip to form a fused portion, such that the clad metal comprises 0.5%.about.80% of the total weight of the fused portion.

REFERENCES:
patent: 4699600 (1987-10-01), Kondo
patent: 4771210 (1988-09-01), Mohle et al.
patent: 4786267 (1988-11-01), Toya et al.
patent: 4963112 (1990-10-01), Benedikt et al.
patent: 5273474 (1993-12-01), Oshima et al.

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