Ishikawajima-Harima Heavy Industries Co., Ltd.

Other

Bhp Steel (Jla) Pty. Ltd.

Bhp Steel Pty (Jla) Ltd

Paul Cassar

William John Folder

Colin Robert Dean

Twin roll casting method and apparatus in which molten metal is introduced between a pair of chilled rolls (,) via an elongate delivery nozzle (,) to form a casting pool (,) above the nip (,) between the rolls (,). Rolls (,) are rotated to cast a solidified strip (,) delivered downwardly from the nip (,). Delivery nozzle (,) comprises upwardly opening trough having side walls (,), a floor (,) and bottom outlet openings (,). A pair of upright flow barrier walls (,) stand up from floor (,) to define an internal trough channel (,) to receive the incoming flow of molten metal (,). Barrier walls (,) prevent direct flow of the incoming metal to the outlet openings (,).

Casting metal strip

Metal delivery nozzle 19 for a twin roll caster is formed in two pieces 19A disposed end to end with a gap 50 between them. Each nozzle piece 19A is mounted on two pairs of mounting brackets 60. Outer end parts of the nozzle pieces 19A are constrained by the interengagement of mounting bracket projections 71 and nozzle recesses 72 such that thermal expansion of the nozzle pieces is accommodated by inward movement into the gap 50. Projection 71 may be upstanding lugs and nozzle recesses 72 may be slots in the undersides of nozzle side flanges.

Strip casting apparatus

Twin roll casting method and apparatus in which molten metal is introduced between a pair of chilled rolls (16) via an elongate delivery nozzle (19) to form a casting pool (68) above the nip (69) between the rolls (16). Rolls (16) are rotated to cast a solidified strip (20) delivered downwardly from the nip (69). Delivery nozzle (19) comprises upwardly opening trough having side walls (62), a floor (63) and bottom outlet openings (64). A pair of upright flow barrier walls (84) stand up from floor (63) to define an internal trough channel (85) to receive the incoming flow of molten metal (65). Barrier walls (84) prevent direct flow of the incoming metal to the outlet openings (64).

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Balgownie, Australia

Paul Cassar