PURPOSE: To provide a method for forming an oxide film onto ferrous metallic foil in which a metallic oxide film having electrical insulating function can stably be formed onto ferrous metallic foil (flat foil and wave foil) constituting an electrical heating carrier with high productivity at a low cost and to provide an oxide film forming device. ;CONSTITUTION: A method for forming a metallic oxide film of alumina series onto ferrous metallic foil in which ferrous metallic foil contg., by weight, 1.0 to 7.0% Al is subjected to heat treatment by an oxidizing furnace of ≥1000°C in a state of being applied with 20-400gf/mm2 tensile force, a device for executing the same method and the ferrous metallic foil on which the metallic oxide film of alumina series having 0.3 to 1.0μm thickness is formed are provided.;COPYRIGHT: (C)1996,JPO
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机译：用途：提供一种在黑色金属箔上形成氧化膜的方法，其中具有电绝缘功能的金属氧化膜可以稳定地形成在构成电加热载体的黑色金属箔（扁平箔和波状箔）上，且生产率高。低成本，并提供一种氧化膜形成装置。 ;组成：一种在黑色金属箔上形成氧化铝系列金属氧化物膜的方法，其中，将重量百分比为1.0％至7.0％的黑色金属箔通过≥1000°C的氧化炉在室温下进行热处理。在施加20-400gf / mm 2 张力的状态下，用于执行相同方法的装置和黑色金属箔，其上形成厚度为0.3至1.0μm的氧化铝系列的金属氧化物膜提供。;版权：（C）1996，日本特许厅
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