IMPROVEMENTS IN BELLO FURNACES USED IN PARTICULAR FOR THE ANNEALING OF METAL COILS IN A CONTROLLED ATMOSPHERE

摘要

Bell oven in particular for carrying out annealing operations under controlled atmosphere of metal sheets in coils which comprises a fixed base provided with a support plate on which the coil or batteries of coils rests, an internal cover isolating the charge from the atmosphere ambient and resting on said base with the interposition of an annular seal and an oven provided with heating means and which covers the cover, characterized in that a semi-sealed barrier 22, 24, 26 is produced between the internal capacity C of said inner cover and the annular space A separating the circular side wall 28 from the periphery of the base and said inner cover and in that there are means limiting the temperature of the lower flange.