Patent ID: 7024750
Filing Date: 2006-04-11
Classification: B22D,C23C,Y10T

Abstract:
1. A method for the production of a layered metal slab by casting, said slab comprising a central metal layer and surface metal layers on opposite sides of the central layer, the method comprising: providing a mould in which the layered metal slab is formed, the mould shaped to form the surface layers on the opposite sides of the central layer; providing a launder element with an opening therein; introducing the central layer as the strip through the opening in the launder element and through the mould; conducting molten metal into the mould via the launder element to form molten metal surface layers on the opposite sides of the central layer; cooling the mould to form the layered metal slab as the molten metal surface layers solidify, the surface layers being metallurgically bonded to the central layer of the slab, the whole thickness of the slab being in the region of 100-200 mm; and working the layered metal slab by rolling.