Batch annealing apparatus
AssigneeNippon Steel Corporation
InventorKiyoharu Omura
Life of this patent
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Abstract
A batch annealing apparatus comprises a bell-shaped furnace, a base plate, an inner cover, plus a bottom chamber that opens upward, has an inside diameter slightly larger than the outside diameter of a metal coil to be treated therein, is capable of accommodating the metal coil, and disposed below the furnace. A cylindrical stationary base coaxially extends upward from the bottom of the bottom chamber. The stationary base has a partition with an outside diameter slightly smaller than the inside diameter of the metal coil that is formed at a point corresponding to the opening of the bottom chamber. The base plate is annular in shape, equipped with cooling means, and supported by elevatable supporting means that passes through the bottom of the bottom chamber. The lower end of the supporting means is connected to an elevating device.
Claims9
A batch annealing apparatus for annealing a metal coil, comprising:
- a bell-shaped furnace having heating means on the inside of the wall thereof;
- a flange around the bottom of said furnace on which said furnace is detachably mounted and having a central opening therein having an inside diameter for permitting the coil to pass snugly thereby;
- a detachable inner cover detachably mounted on said flange for covering a metal coil to be annealed and which is positioned in said furnace with the axis thereof vertical;
- a bottom insulating chamber extending downwardly from said flange and having a closed bottom for isolating the interior thereof from the surrounding atmosphere and further having an inside diameter of a size for accommodating the metal coil therein and having said flange on the upper end thereof;
- a cylindrical stationary base extending axially upwardly from the bottom of said bottom chamber into said inner cover and having a horizontal partition thereon at a point substantially corresponding to the level of said flange to define an annular opening therewith, the partition having an outside diameter for permitting the inside diameter of the metal coil to pass snugly thereby;
- an annular base plate having a size for just fitting said annular opening and having cooling means operatively associated therewith;
- an elevatable supporting means passing through the bottom of said bottom chamber in sealing engagement therewith and on which said base plate is mounted;
- and
- speed controllable elevating means connected to said supporting means.
Dependencies are inferred from the claim text.