结晶器密封绳在炼钢开浇前使用。
长水口密封碗高温性能好,在开浇后高温下不粉化、不粘附;
Elongated nozzle sealing bowl has better resistance to high temperature. There is no pulverization and no adhesion after casting.
但连铸开浇阶段由于浇铸状态的不稳定,会严重恶化头坯洁净度。
But, head slab cleanliness is seriously deteriorated by the unsteady casting condition at casting start stage.
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