摘要
Soft reduction technique can decrease the presence of central porosity andcenterline segregation, and thus to enhance the internal quality effectively. In order to producehigh quality billets, Xinxing Ductile Cast Pipe Group Co. Ltd. of China has installed a set of softreduction apparatus on No. 1 caster and has achieved a great success. The principle, operatingconditions and controlling factors, and the specification of soft reduction for solidifying billetsare introduced. In order to make the effectiveness of soft reduction clear, metallurgical evaluationis made. The results indicate that soft reduction can increase equiaxial zone by 3 percent.
Soft reduction technique can decrease the presence of central porosity andcenterline segregation, and thus to enhance the internal quality effectively. In order to producehigh quality billets, Xinxing Ductile Cast Pipe Group Co. Ltd. of China has installed a set of softreduction apparatus on No. 1 caster and has achieved a great success. The principle, operatingconditions and controlling factors, and the specification of soft reduction for solidifying billetsare introduced. In order to make the effectiveness of soft reduction clear, metallurgical evaluationis made. The results indicate that soft reduction can increase equiaxial zone by 3 percent.
