Rolling mill with optimized determination of cutting points
AssigneePrimetals Technologies Germany GmbH
InventorsYun Ling, Paul Barry Riches
Life of this patent
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Abstract
A billet (2) is rolled to a rod (3) in a rolling mill. The rod (3) exits the rolling mill with a finishing temperature (TE1). A rear laser measurement device (8) arranged downstream of the rolling mill detects the head end and the speed (v) of the rod (3). The detected speed (v) of the rod (3) is integrated to its length and an instantaneous length (L) of the rod (3) is determined. Dependent on the determined instantaneous length (L) of the rod (3), cutting commands (S) to a rear shears (5) arranged downstream of the rolling mill are provided for cutting the rod (3) in sections (6) of predetermined length (L0). The sections (6) of the rod (3) are cooled down in a cooling bed (7).
Claims19
A method of operation of a rolling mill for rolling a billet;
- wherein the billet is rolled in the rolling mill to a rod, and the rod exits the rolling mill at a finishing temperature of the rod;
- the method comprising:
- feeding the billet through the rolling mill for rolling the rod from the billet;
- detecting a head end of the rod and a speed of the rod by a rear laser measurement downstream of the rolling mill;
- mathematically integrating the detected speed of the rod for determining an instantaneous length of the rod;
- providing cutting commands to a rear shears arranged downstream of the rolling mill for cutting the rod in sections of a predetermined length depending at least on the determined instantaneous length of the rod;
- and
- cooling the cut sections of the rod.
Dependencies are inferred from the claim text.