METHOD FOR MANUFACTURING AN ASSEMBLY FOR A SPARK PLUG AND SPARK PLUG

• Main Authors: GRABNER, Robert, PYSZCZEK, Rafal, KLAUSNER, Johann
• Format: Patent
• Language: English; French; German
• Published: 26.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CORONA DEVICES; ELECTRICITY; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARK GAPS; SPARKING PLUGS

A method for manufacturing an assembly of a center pin and a middle electrode carrier or a middle electrode, respectively, for a spark plug, which spark plug can be used for igniting a combustible air-fuel-mixture in an internal combustion engine, wherein-a piece of wire or rod is provided having, preferably over its length, a core of a first material which is surrounded by an outer layer of a second material, the second material being different from the first material, wherein the core is exposed at one end of the piece of wire or rod;a middle electrode carrier or a middle electrode, respectively, is provided at said one end of the piece of wire or rod;a high energy beam, preferably a laser beam, is directed to the exposed core and a powder is melted onto the exposed core by the high energy beam such that in a contact region of the powder and the exposed core a microstructure composed of material of the core and powder is formed after resolidification of the material of the core and the powder and the core is covered by resolidified powder at the one end of the piece of wire or rod.