Ports/outlets in Submerged Entry Nozzles (SEN) control molten steel flow distribution in continuous casting.
Ports/outlets are precisely engineered openings in Submerged Entry Nozzles (SEN) that regulate the flow of molten steel from the tundish into the continuous casting mold. These critical components determine flow patterns, turbulence levels, and temperature distribution within the mold, directly impacting steel quality, surface finish, and casting stability. Their design affects inclusion flotation, meniscus stability, and shell formation during solidification.
诱因 → 失效模式 → 工程缓解
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Optimal port geometry depends on casting speed, steel grade, mold dimensions, and desired flow pattern. Higher casting speeds typically require larger ports with specific angles to maintain proper flow distribution and meniscus stability.
Port designs directly impact inclusion removal efficiency, surface defects, and internal quality. Properly designed ports promote upward flow for inclusion flotation while maintaining stable meniscus conditions to prevent slag entrapment and surface defects.
Regular inspection for erosion, clogging, and thermal cracking is essential. Port geometry changes over time affect flow characteristics, requiring scheduled replacement to maintain casting quality and prevent breakouts.
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