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US 7,275,309 B2Granted
Method of manufacturing electrical resistance heating element
AssigneeNGK Insulators, Ltd.
InventorsHiroto Matsuda, Kazuhiro Nobori, Yutaka Mori
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Abstract
A method of manufacturing an electrical-resistance heating element includes forming sintered ceramics or calcined ceramics, forming an electrode on the sintered ceramics or the calcined ceramics, and forming a ceramic base material having mainly a high melting point metal on the electrode embedded therein, thereby forming a heating element with built-in electrode.
Claims11
A method of manufacturing an electrical-resistance heating element, the method comprising the steps of:
- forming sintered ceramics or calcined ceramics;
- forming an electrode on the sintered ceramics or the calcined ceramics;
- placing ceramic powder on the sintered ceramics or calcined ceramics and the electrode;
- forming a groove in the ceramic powder;
- placing a high melting point metal into the groove to form a heating element;
- placing an additional amount of ceramic powder on the previously placed ceramic powder and the high melting point metal;
- and
- forming the ceramic powder and the high melting point metal into a molded form, thereby forming a heating element with a built-in electrode.
5 more elements
Dependencies are inferred from the claim text.