| 摘要 |
<p>The invention relates to an inner nozzle (12) for casting molten metal from a metallurgical vessel, said inner nozzle comprising a) a substantially tubular portion (24) with an axial through bore; b) an inner nozzle plate comprising a bottom flat contact surface (26) enclosed within a perimeter (Pm) and a second surface opposite the bottom contact surface (26) and joining the wall of the tubular portion (24) to the side edges (40a-b, 42a-b) of the plate, said side edges defining the perimeter and thickness of the plate, the inner nozzle further comprising c) a metallic casing (22) cladding at least a portion of some or all of the side edges (40a-b, 42a- b) and second surface but not the sliding plane (Pg) of the inner nozzle plate and provided with d) a metallic bearing surface (34a, 34b, 34c), facing towards and recessed with respect to the contact surface (26) and extending from the cladded portion of the side edges (40a-b, 42a-b) beyond the perimeter (Pm) of the contact surface (26), characterised in that the bearing surface (34a, 34b, 34c) is defined by the ledges (34a, 34b, 34c) of at least two separate bearing elements (30a, 30b, 30c) distributed around the perimeter of the plate.</p> |
