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 。
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.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第Z1期163-166,共4页
The Chinese Journal of Nonferrous Metals
基金
河北省自然科学基金资助项目 ( 5 992 81)
关键词
半固态金属
连铸
工艺参数
semisolid metals
continuous casting
process parameter
