The manufacture of thin metal slab
AssigneeDavy (Distington) Limited
InventorsRobert M. Perry, Timothy Reynolds, Thomas Hope, Kenneth T. Lawson
Life of this patent
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Abstract
In the manufacture of thin metal slab, a workpiece is cast in a continuous casting mould but, while still connected to the part within the mould, the workpiece is treated differently across its width to produce slab of a different width from the east workpiece and of uniform cross-section. The treatment may be rolling or forging.
Claims3
A method of manufacturing a thin metal slab comprising the steps of providing a continuous casting mould having a mould passage therethrough extending from an inlet end to an outlet end, said mould passage having a longitudinally extending central region which is between, and is of a different thickness from, longitudinally extending edge regions;
- pouring molten metal into the inlet end of the mould passage and, from the outlet end of the mould passage, drawing a cast slab comprising a solid shell surrounding a non-solid core, said slab having a pair of opposite faces of a width which has a longitudinally extending central region which is of a different thickness from its longitudinally extending edge regions;
- and downstream of the mould at a position where the core of the slab is solid, subjecting the pair of opposite faces of a solid portion of the slab while it is still connected to the portion thereof in the mould to a rolling process between parallel cylindrical rolls to produce a metal slab of uniform thickness and having a width which is different from the width of the cast slab which is drawn from the outlet end of the mould passage.
Dependencies are inferred from the claim text.