AIR INSULATING CHAMBER OF TWIN DRUM TYPE CONTINUOUS CASTING MACHINE AND METHOD FOR MAINTAINING AND MANAGING DRUM

PURPOSE: To make it possible to maintain and manage drums while holding the drums installed by installing wall surface members in hermetic positions to form an air insulating chamber from twin drums and moving these wall surface members to retreat positions to form spaces between the twin drums and the air insulating chamber. CONSTITUTION: The air insulating chamber 7 has an air insulation setting chamber in the upper part and brings the wall surface members 8, 9, 10, 11 into sufficient proximity to the drums 1, 1' at the time of installing these members in the air insulation setting positions. For example, the top end of the wall surface member 8 is set in proximity to the drum 1, the bottom end to a ceiling 13, the one side end to the wall surface member 10 and the other side end to the wall surface member 11. Then, the infiltration of air is prevented and the hermetic air insulating chamber 7 hermetic with the twin drums 1, 1' is formed if a non-oxidative gas is filled in the air insulating chamber 7. Casting is executed in this state. The spaces for maintaining and managing the twin drums are formed between the drums 1, 1' and the air insulating chamber 7 if the wall surface members 8, 9, 10, 11 are moved to the retreat positions 8', 9', 10', 11' and, therefore, the maintenance of the twin drums in the set state is possible.