METHOD FOR MANUFACTURING AN IGNITION ELECTRODE FOR SPARK PLUGS AND SPARK PLUG MANUFACTURED THEREWITH

摘要

A method for manufacturing an ignition electrode for spark plugs for internal combustion engines. The method includes producing by powder metallurgy a green part or brown part containing the base metal or the base metal alloy, coating of a part of the surface of the green part or brown part with a mixture that contains the precious metal or the precious metal alloy in the form of a powder and a binder, removing the binder from the layer that was formed by the coating and that contains the precious metal or the precious metal alloy, and sintering the coated green part or brown part to form a composite part. The composite part is welded as an end piece to the one end of the base-metal section of the ignition electrode.

主权项

1. Method for manufacturing an ignition electrode for spark plugs for internal combustion engines that has a section, made of a base metal or base metal alloy, which is tipped at one end with a precious metal or precious metal alloy, characterized by production of a composite part through
production by powder metallurgy of a green part or brown part containing the base metal or the base metal alloy; coating a part of the surface of the green part or brown part with a mixture that contains the precious metal or the precious metal alloy in the form of a powder and a binder; removal of the binder from the layer formed by coating that contains the precious metal or the precious metal alloy; sintering of the coated green part or brown part; and welding of the composite part thus formed to the one end of the base-metal section of the ignition electrode, as an end piece.