Microwave oven using a precoated sheet steel as walls of an internal chamber thereof

Abstract

There is provided a microwave oven using as walls of its internal chamber a precoated sheet steel which has no harmful effect on food sanitation. The precoated sheet steel includes a comprised a sheet steel, a strontium chromate primer having strontium chromate dispersion-mixed with a resin and being applied to one side of the sheet steel, a paint applied over the strontium chromate primer, and a paint applied over the other side of the sheet steel. The one side of the precoated sheet steel constitutes exterior surfaces of the walls of the internal chamber and the other side of the precoated sheet steel constitutes interior surfaces of the walls of the internal chamber. A molybdenum primer comprising molybdenum pigment dispersion-mixed with a resin may be applied to both sides of the sheet steel instead of the strontium chromate primer.

Dependencies are inferred from the claim text.