Back to results
US 4,391,587 AGranted
Slab heating furnace
AssigneeNippon Steel Corporation
InventorsTadashi Murakami, Toshikatsu Kishida
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNippon Steel Corporation
InventorsTadashi Murakami, Toshikatsu Kishida
Estimating the term…
In a slab heating furnace of walking beam- or pusher-type, particularly for the heating of steel prior to the hot working of the steel, skid beams are supported by water-cooled posts. In order to reduce the number of the water-cooled posts from that in the prior art, a post head having a trough shaped portion is stationarily located on each of the posts. The length of the post head is longer than the outer diameter of the post provided with said post head. The total withdrawal of heat from heated steel to all of the post heads is considerably small, because the number of posts is reduced from that of the prior art due to the structure of the post heads. The posts are preferably arranged in a zigzag pattern.
In a heating furnace, the combination of water cooled tubular skid beams, water cooled posts for supporting said water cooled skid beams, and a post head on the upper end of each supporting post and having a trough-shaped receiving portion receiving a skid beam therein, said trough-shaped receiving portion having a length in the direction of the length of the supported skid beam from two to five times the outer diameter of said water cooled posts.
A walking beam type heating furnace having a hearth and stationary water cooled skid beams and movable water cooled skid beams, said stationary water cooled skid beams and said movable water cooled skid beams extending in the longitudinal direction of said furnace and alternately provided in a direction transversely of the furnace, a group of stationary water cooled posts standing on the hearth of said furnace and supporting said stationary water cooled skid beams, said hearth having slots therein, a group of vertically driven water cooled posts protruding through said slots in said hearth and supporting said movable water cooled skid beams, a bank surrounding each of said slots and positioned on said hearth for preventing molten slag or scale from flowing into said slots, a trough-shaped receiving portion on the upper end of each of said posts receiving a skid beam therein, said trough-shaped receiving portions each having a length in the direction of the length of the supported skid beam from two to five times the outer diameter of the post, and the stationary water cooled posts being aligned in rows transversely of the furnace and the vertically driven water cooled posts being aligned in rows transversely of the furnace with the rows of stationary posts alternately with the rows of vertically driven posts.
Dependencies are inferred from the claim text.