(1. 清华大学 机械工程系, 北京 100084；
2. 北京科技大学 铸造研究所， 北京 100083；
3. 河北科技大学 材料系， 石家庄 050054)
摘 要: 提出了半固态连铸的主要工艺参数设计原则：浇注温度为浇入制浆室后的熔体温度恰好等于液相线的温度；制浆室预热温度保证熔体浇入后，其界面温度不小于停止流动的临界温度,不大于熔体的初始温度；开拉时间在保证开拉时引锭不滑脱的前提下越短越好；拉坯速度既保证金属熔体通过制浆室的时间不小于非技晶球状组织的形成时间，又要保证熔体在通过结晶器的时间内能够形成不小于安全厚度的凝固层。
关键字: 半固态金属；连铸； 工艺参数
semisolid continuous casting
（1. Department of Mechanical Engineering,
Tsinghua University,Beijing 100084, P.R.China；
2. Foundry Research Institute, University of Science and Technology Beijing,
Beijing 100083, P.R.China；
3. Department of Materials Science and Engineering,
Hebei University of Science and Technology, Shijiazhuang 050054, P.R.China）
Abstract:The obtained design principles of the major process parameters of the semisolid continuous process are: 1) the pouring temperature must make the temperature of the poured melt equal to the liquidus temperature; 2) the preheating temperature of the stirring chamber must make the melt temperature in the inner surface of the stirring chamber in the range from the critic temperature for stopping flow to the liqidus temperature of the alloy；3) the beginning time for the withdrawal should be determined as short as possible in the condition of the withdrawal slipping free, and 4) the withdrawal rate is designed to provide a time long enough not only for the nondendretic structure forming, but also for the safety thickness forming.
Key words: semisolid metals; continuous casting; process parameter
