Method and apparatus for decelerating and temporarily accumulating a hot rolled product

Abstract

A method and apparatus is disclosed for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a receiving axis at a first velocity V1. The product is directed through a curved guide having an entry end aligned with the receiving axis to receive the product, and an exit end spaced radially from the receiving axis and oriented to deliver the product in an exit direction transverse to the receiving axis. The curved guide is rotated about the receiving axis in a direction opposite to the exit direction of the product and at a speed at which the guide exit end has a velocity V2, thereby decelerating the product being delivered from the guide exit end to a reduced velocity V3 equal to V1-V2. The curvature of the guide and the orientation of its exit end is such as to form the delivered product into a helix deposited and temporarily accumulated on a cylindrical drum. The drum is rotated in a direction opposite to the direction of rotation of the curved guide to thereby unwind the product from the drum.

Description

[0001] This patent application claims priority to Application Serial No. 60 / 470,265, filed May 14,2003. technical field [0002] The present invention relates generally to continuous rolling mills for the production of hot-rolled long products such as bars and wire, and in particular to methods for decelerating and temporarily storing such products during a selected stage of the hot-rolling process. methods and devices. Background technique [0003] In a typical rolling mill setup, the billet is heated in a furnace to an elevated hot rolling temperature. Then the heated billet is successively rolled through the rough rolling, intermediate rolling and finishing rolling areas, and each rolling area contains multiple rolling stands. For large-scale products, the entire rolling mill can operate at or close to the maximum working capacity of the furnace. However, when the rolling plan calls for small-size products, the capacity of the finishing area is often reduced to a much l...

AI Technical Summary

Problems solved by technology

This, combined with the inability to control how the coils are distributed across the surface of the spool, can lead to coils overlapping each other, which in turn can mess up the unwinding process

[0009] Furthermore, with Hein's arrangement, the laying head cannot be operated continuously, but must be brought to a complete stop at the beginning of each storage operation so that the leading end of the rolled stock can be drawn through the storage reel to the downstream retaining clip Roller unit

As a result, there is an unstable state in the process of overcoming the inertia of the system and bringing the laying head back up to its operating speed, which further disturbs the coil shape of the stock on the storage drum.

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