Analysis of Micro-Segregation of Solute Elements on the Central Cracking of Continuously Cast Bloom

On the basis of Brody–Flemings model and modified Voller–Beckermann model, an analytical micro-segregation is established by considering actual solidification cooling conditions bloom. According to developed interdendritic solute distribution at origin cracking gap obtained. It found that both phosphorus sulfur have quite severe segregation, but carbon manganese slight segregation; these results agree well with semiquantitative analysis scanning electron microscope (SEM). At same time, segregation leads enhanced increase in temperature range crack formation; correspondingly, possibility significantly increases and, thus, element internal cause formation. other hand, taking into account heat transfer, phase transformation, metallurgical pressure, strain solid shell revealed through finite software. When thickness equal distance 90 mm between opening point inner arc side, tensile front much bigger than critical strain, which meets external therefore, reasons for blooms are successfully found.