| 摘要 |
An annealing furnace for heating treatment of a steel sheet is provided to support a refractory built in the annealing furnace firmly, and to improve a surface of the steel sheet by mounting heat-resistant supporting members and supporting a gypsum board or a movable plate. An annealing furnace(100) for heating treatment of a steel sheet(S) comprises a gypsum board(120), an asbestos(130), heat-resistant movable plates(150), and fixing pieces(140). The gypsum board is attached to the inner surface of an outer part(110) of the annealing furnace. The heat-resistant movable plates are closely contacted with the surface of the asbestos and placed to overlap the surfaces facing the inside of the annealing furnace from the asbestos like a step method. The fixing pieces pass through the movable plate, the asbestos, and the gypsum board to be fixed to the outer part. Heat-resistant supporting members(160) are mounted to the edge parts where a ceiling and a sidewall of the annealing furnace are met to support the gypsum board or the movable plate. |
