Method and apparatus for continuously hot rolling ferrous long products
AssigneeMorgan Construction Company
InventorsTerence M. Shore, Harold E. Woodrow, Melicher Puchovsky
Life of this patent
Estimating the term…
Abstract
Long products are hot rolled and sized by being subjected to progressively diminishing area reductions in a succession of at least three mechanically interconnected two roll passes driven by a common mill drive. The area reductions are achieved by imparting a first cross sectional configuration to the products rolled in the first roll pass, and by imparting a different second cross sectional configuration to the products being rolled in each of the second and third roll passes. A wide range of product sizes is accommodated by selectively adjusting the speeds at which each of the roll passes is driven by the common mill drive in order to vary the drive speed ratios between successive roll passes.
Claims15
A method of continuously hot rolling and sizing long products, comprising:
- subjecting the products to progressively diminishing area reductions in a succession of first, second and third mechanically interconnected two roll passes driven by a common mill drive, the said area reductions being achieved by imparting a first cross sectional configuration to the products rolled in said first roll pass, and by imparting a different second cross sectional configuration to the products rolled in each of said second and third roll passes;
- and
- selectively adjusting the speeds at which each of said roll passes is driven by said common mill drive in order to change the drive speed ratios between successive roll passes.
Apparatus for continuously hot rolling and sizing long products, comprising:
- a succession of first, second and third roll stands, each of said roll stands having a pair of grooved work rolls defining a roll pass aligned along a mill pass line, the first of said roll passes being configured to impart a first cross-sectional configuration to the products being rolled, and the second and third of said roll passes being configured to impart a different second cross-sectional configuration to the products being rolled;
- a mill drive;
- connecting means for mechanically interconnecting said roll stands to each other and to said mill drive;
- and
- adjusting means for selectively adjusting the speeds at which each of said roll stands is driven by said common mill drive to thereby change the drive speed ratios between successive stands.
Dependencies are inferred from the claim text.