ASYMETRIC SLAB NOZZLE AND METALLURGICAL ASSEMBLY FOR CASTING METAL INCLUDING IT

• Main Authors: RICHAUD JOHAN, KREIERHOFF MARTIN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The present invention concerns a slab nozzle (1) for use in a continuous slab casting installation, characterized by a specific geometry of the outer wall of a downstream portion thereof which is inserted in a slab mould cavity. The specific geometry promotes a 'round-about' effect whereby converging opposite streams of molten metal flowing towards two opposite flanks of the slab nozzle are each preferentially deviated towards one side of the slab nozzle where they can freely flow through the narrow channels formed between the slab nozzle and the slab mould cavity wall without impinging with one another. This prolongs the service life of the slab nozzle by substantially reducing the erosion rate of the outer wall thereof. 本发明涉及种用于连续板坯铸造装置的板坯水口(1)，其特征在于插入板坯结晶器空腔中的其下游部分的外壁的特定几何形状。该特定几何形状促进了"环岛"效应，由此使朝向板坯水口的相对两侧流动的熔融金属相对汇聚流被分别优先地偏转朝向所述板坯水口的侧，在那里它们可以自由地流过在板坯水口和板坯结晶器空腔壁之间形成的窄通道而不相互碰撞。这通过显著降低其外壁的侵蚀速率来延长板坯水口的使用寿命。