| 摘要 |
Discharge nozzle (10) for a crystalliser for continuous casting of slabs, which is suitable to cooperate with means feeding molten steel and to discharge that molten steel into the crystalliser (41) and has its outlet (15) positioned below the meniscus (42) and includes a first intake chamber (13) defining a conduit having a dimension of its crosssection (S) and a nominal diameter (D), that first intake chamber (13) being associated at its lower end with a second expansion chamber (12), which has a nominal dimension of its through passage having a cross-section of at least 1.2 D by 1.2 D, the second expansion chamber (12) containing at a distance (23) of at least 0.3 D from the outlet of the first intake chamber (13) an energy absorbing baffle (14), the second expansion chamber (12) having a height (26) of at least 7.0 D and an outlet (15, 115, 215)) with a wide side (28; 2 x 128; 2 x 228) of at least 4.5 D and a narrow side (32) of at least 0.5 D, the second expansion chamber (12) having at its lower end a terminal segment (27, 127) of at least 1.0 D.
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