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US 4,308,739 AGranted
Method for modernizing a hot strip mill
AssigneeTippins Machinery Company, Inc.
InventorGeorge W. Tippins
Life of this patent
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AssigneeTippins Machinery Company, Inc.
InventorGeorge W. Tippins
Estimating the term…
Standard hot strip mills include a roughing train and a finishing train having a plurality of finishing stands F-1, F-2, F-3 . . . F-X. F-2 is eliminated from the finishing train and F-1 is converted into a reversing mill. Coiling furnaces are installed on either side of F-1 with the downstream coiling furnace replacing F-2. The resultant reversing mill and coiling furnaces are arranged so that a transfer bar is first reduced as it passes through F-1 in a forward direction and coiled in the downstream coiling furnace, then further reduced as it is passed in a reverse direction through F-1 to the upstream coiling furnace, then further reduced as it is passed the third time through F-1, and then further reduced to the final gauge as it passes successively through F-3 and the remainder of the finishing stands in the finishing train.
A method of increasing the productivity of a continuous or semi-continuous hot strip mill including a roughing train for converting a slab to a transfer bar on the order of two inches and a finishing train having a plurality of finishing stands, F-1, F-2, F-3 . . . F-X for converting the transfer bar to a hot rolled strip having a PIW in excess of 600 comprising:
A method of increasing the productivity of a continuous or semi-continuous hot strip mill including a roughing train for converting a slab to a transfer bar and a finishing train having a plurality of finishing stands F-1, F-2, F-3 . . . F-X for converting the transfer bar to a hot rolled strip comprising:
Dependencies are inferred from the claim text.