Analysis on breakout of bloom continuous caster and countermeasures

The statistics of breakout of the bloom continuous caster in No.1 steelmaking plant of WISCO in 2006 have been made and the main characteristics and mechanism of sticking breakout and longitudinal corner crack induced breakout analyzed.The main causes to the above mentioned breakouts are found to be such a few factors as the performance of mold powder,accuracy of mold,extent of hot metal overheat,casting speed,and alignment of the submerged entry nozzle with the mold and etc,and thereupon certain countermeasures have been taken up.As the results,the breakout rate of caster is decreased remarkably.