Practice of on-line continuous casting system for multi-section square/round billet
In order to study the production technology of multi-section simultaneous on-line continuous casting,the key equipment of continuous casting machine,such as tundish,mold and oscillating equipment,secondary cooling,withdrawal straightener,etc,are designed based on 10-machine 10-flow square/round billet compatible continuous casting system.The main process parameters of multi-section production,such as tundish flow,casting tempera-ture,casting speed and secondary cooling,were designed and researched,by section size of φ180 mm,φ210 mm,φ250 mm,φ310 mm round billet and 200 mmX200 mm square billet simultaneous on-line practice.For high quality low and medium carbon steel,practice shows that multi-section square/round billet can be produced simultaneously by on-line continuous casting with appropriate equipment and process parameters.The production quality is stable and reliable,which can fully meet the requirements of casting slab production quality and greatly improves the enter-prise market flexibility.