Systems and methods for threading a hot coil on a mill

Patent metadata

Field	Value
Publication number	US-11242586-B2
Application number	US-201916448316-A
Country	US
Kind code	B2
Filing date	Jun 21, 2019
Priority date	Sep 27, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Systems and methods of threading a metal substrate on a rolling mill include receiving a coil of the metal substrate. The method also includes uncoiling the metal substrate from the coil while the coil and guiding the metal substrate to a work stand of the rolling mill with a threading system.

First claim

That which is claimed is:

1. A method of threading a metal substrate on a rolling mill comprising:
receiving a coil of the metal substrate;
uncoiling the metal substrate from the coil;
guiding the metal substrate to a work stand of the rolling mill with a threading system, wherein guiding the metal substrate to the work stand comprises:
guiding the metal substrate to a threading carriage of the threading system;
gripping the metal substrate with the threading carriage; and
moving the threading carriage towards the work stand,
wherein the threading carriage comprises a gripping wedge, and wherein gripping the metal substrate with the threading carriage comprises directing the metal substrate through the gripping wedge and closing the gripping wedge on the metal substrate at a position that is offset from a leading edge of the metal substrate to grip the metal substrate, and
wherein the method further comprises adding stiffness to the metal substrate by closing the gripping wedge and crimping the metal substrate with the gripping wedge such that the metal substrate comprises at least one lateral curvature across a width of the metal substrate.

2. The method of claim 1 , wherein adding stiffness to the metal substrate comprises crimping the metal substrate with the gripping wedge such that the metal substrate comprises a plurality of lateral curvatures across the width of the metal substrate.

3. The method of claim 1 , wherein the threading carriage grips the metal substrate proximate to a leading edge of the metal substrate, and wherein the method further comprises:
disengaging the threading carriage from the metal substrate when the leading edge of the metal substrate is proximate the work stand;
gripping the metal substrate proximate to a trailing edge of the metal substrate proximate an uncoiler; and
disengaging the threading carriage from the metal substrate when the trailing edge of the metal substrate is proximate to the work stand.

4. The method of claim 1 , further comprising quenching the metal substrate with at least one quench sprayer while guiding the metal substrate to the work stand.

5. The method of claim 1 , further comprising controlling tension, controlling a metal substrate temperature, guiding the metal substrate, modifying a passline of the metal substrate, or non-contact supporting the metal substrate with at least one rotating magnet.

6. A system for threading a metal substrate on a rolling mill comprising:
a threading carriage comprising a gripper configured to grip a metal substrate; and
a track extending between an unwind mandrel and a work stand of the rolling mill,
wherein the threading carriage is movable along the track, and wherein the threading carriage is configured to guide and apply tension to the metal substrate between the unwind mandrel and the work stand,
wherein the gripper comprises a gripping wedge configured to close on the metal substrate at a position that is offset from a leading edge of the metal substrate, and
wherein the gripping wedge is further configured to crimp the metal substrate such that the metal substrate comprises at least one lateral curvature across a width of the metal substrate.

7. The system of claim 6 , further comprising at least at least one rotating magnet between the unwind mandrel and the work stand.

8. The system of claim 7 , wherein the at least one rotating magnet comprises a pair of vertically aligned rotating magnets, and the metal substrate is configured to pass between the pair of vertically aligned rotating magnets.

Assignees

• Novelis Inc

Inventors

• Hobbis Andrew James
• Pralong Antoine Jean Willy
• Mick Stephen Lee
• Brown Rodger
• Finn Mark
• Knelsen Peter
• Lee Terry
• Alder Hansjuerg
• Beck William
• Quintal Roberto
• Iyer Natasha
• Geho Jeffrey Edward

Classifications

• C21D8/0247

  characterised by the heat treatment · CPC title

• B21C47/00 Primary

  Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only (coiling wire into particular forms B21F3/00) · CPC title

• C21D1/42

  Induction heating · CPC title

• H05B6/104

  metal pieces being elongated like wires or bands · CPC title

• H05B6/36

  Coil arrangements · CPC title