Abstract：Corner cracks, middle cracks, pressure cracks and loose structure of billets were bought out because the worst Secondary Cooling crafts and the worst equipments of CC Abstract Billet in the steelmaking plant of Jiujiang Iron & Steel company. Optinizing-technologys and Transforming-quipments have already been taken, and the rejected rate of internal defects of the billet due to a relatively lower level.
Key words Small Billet cracks of Billet Secondary Cooling
2009, Vol. 28 
