Heating element and a method for manufacturing the same

Details Heating element and a method for manufacturing the same Heating element and a method for manufacturing the same

H - Electricity

05

B

H05B 3/12 (2006.01) H05B 3/30 (2006.01)

Patent

CA 2051231

ABSTRACT OF THE DISCLOSURE A heating element for a cooking apparatus or a heating apparatus is manufactured by forming alumini- um layers on a nickel or nickel-base alloy base or forming nickel layers and then aluminium layers on a metal base, and by oxidizing the aluminium layers into an aluminium oxide layers. At the oxidizing step, nickel-aluminium alloy layers with high corrosion resistance are also produced. Only aluminium layers, not nickel layers, may be formed on a metal base and oxidized into aluminium oxide layers to obtain a heat- ing element with relatively low but practical corrosion resistance. The resultant heating element by any of the above processes which does not require a cover or other protection against corrosion is formed into a sheet and heated to provide radiation of about 800°C.

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