Rolling method and apparatus
AssigneeDavy-Loewy Limited
InventorRobert W. Gronbech
Life of this patent
Estimating the term…
Abstract
Rolling plant for hot rolling metal workpieces comprises a reversing roughing mill, a continuous finishing mill spaced from the roughing mill and an intermediate coiler which can be retracted to an inoperative position clear of the pass-line. In the penultimate forward pass of the roughing mill, the coiler is in its inoperative position and the workpiece is rolled to a length greater than the coiler--roughing mill spacing but less than the finishing mill--roughing mill spacing, the leading end of the workpiece passing under the coiler. In the final forward pass, the coiler is in its operative position on the pass-line and effects coiling of the workpiece. Subsequently, the coil is uncoiled and led out to the finishing mill.
Claims11
In a method of hot rolling a metal workpiece in a reversing roughing mill followed by a continuous finishing mill with a coiler between those mills, the steps of
- (a) rolling said workpiece in said roughing mill in a series of passes to a gauge for entry to said finishing mill;
- (b) prior to the penultimate forward pass, bringing said coiler into an inoperative condition in which said workpiece can pass the coiler location without obstruction;
- (c) in the penultimate forward pass rolling said workpiece in said roughing mill to a length exceeding the spacing of said coiler from said roughing mill but less than the spacing of said finishing mill from said roughing mill;
- (d) after said workpiece has been reversed towards said roughing mill to clear said coiler position, bringing said coiler into an operative condition for coiling;
- (e) in the last forward pass coiling said workpiece by said coiler;
- and
- (f) then uncoiling said workpiece to said finishing mill.
Rolling mill plant for hot rolling metal workpieces comprising
- (a) a reversing roughing mill,
- (b) a continuous finishing mill spaced from said roughing mill,
- (c) conveying means for conveying workpieces rolled by said roughing mill towards and away from said finishing mill;
- (d) a coiler located between said roughing mill and said finishing mill for coiling workpieces from said roughing mill and uncoiling the workpieces to said finishing mill,
- (e) said coiler being movable between an operative position in which a workpiece fed thereto is coiled and an inoperative position in which a workpiece can pass the coiler unobstructed thereby;
- and
- (f) means for moving said coiler between said operative and inoperative positions.
Rolling mill plant for hot rolling metal workpieces comprising
- (a) a reversing roughing mill,
- (b) a continuous finishing mill spaced from said roughing mill,
- (c) conveying means for conveying workpieces rolled by said roughing mill towards and away from said finishing mill;
- and
- (d) a coiler located between said roughing mill and said finishing mill for coiling workpieces from said roughing mill and uncoiling the workpieces to said finishing mill,
- (e) said coiler having deflector means movable between a first disposition, in which a workpiece fed from said roughing mill is directed to said coiler, and a second disposition, in which a workpiece fed from said roughing mill passes said coiler without obstruction or coiling.
In a method of hot rolling a metal workpiece in a reversing roughing mill followed by a continuous finishing mill with a coiler between those mills, the steps of
- (a) rolling said workpiece in said roughing mill in a series of passes to a gauge for entry to said finishing mill;
- (b) prior to the penultimate forward pass, retracting said coiler out of the pass-line of said mills, and thereby bringing said coiler into an inoperative condition in which said workpiece can pass the coiler location without obstruction;
- (c) in the penultimate forward pass rolling said workpiece in said roughing mill to a length exceeding the spacing of said coiler from said roughing mill but less than the spacing of said finishing mill from said roughing mill;
- (d) after said workpiece has been reversed towards said roughing mill to clear said coiler position, bringing said coiler into an operative condition for coiling by moving said coiler into said pass-line;
- (e) in the last forward pass coiling said workpiece by said coiler;
- and
- (f) then uncoiling said workpiece to said finishing mill.
Dependencies are inferred from the claim text.