Impact of Improper Molten Steel Temperature Control in Continuous Casting
Risks of Excessive Temperature
Shell Thinning & Breakout Risk: High-temperature molten steel exiting the mold forms a thinner billet shell, increasing breakout susceptibility.
Refractory Erosion: Accelerated wear on refractory materials may lead to uncontrolled casting flow, compromising operational safety.
Inclusion Accumulation: Excessive non-metallic inclusions degrade slab internal quality.
Crystal Structure Issues: Promotes excessive columnar crystal growth, worsening segregation.
Centerline Defects: Aggravates central segregation, raising the likelihood of centerline cracks.
Consequences of Insufficient Temperature
Nozzle Blockage: Low temperature increases the risk of clogging, potentially interrupting casting.
Surface Defects: Higher incidence of surface flaws such as blisters, slag inclusions, and cracks.
Inclusion Retention: Impairs the flotation of non-metallic inclusions, negatively affecting slab internal quality.
Optimal Temperature Management in Ladle
Precision Control: Adjust tapping temperature strictly according to steel grade specifications, maintaining a narrow fluctuation range.
Minimize Heat Loss: Reduce temperature drop across critical stages—tapping, ladle transfer, and tundish entry—to ensure thermal stability.
This version retains all technical details while improving clarity and flow. Let me know if further refinements are needed!
