连铸坯凝固过程中传输现象基础知识系列讲座(待续)──第二讲　连铸坯质量与凝固过程中的传输现象

Serial Lecture of the Rudimentary Knowledge of Transmission Phenomenon of the Solidification Process of Continuous Cast Slab and Billet(to be continued)Lecture Two Quality of Continuous Cast Slab and Billet and Transmission Phenomena of the Solidi

高效连铸的主要目的是获得高的铸坯无缺陷率，连铸技术工作者一直把连铸坯质量作为连传发展的一个方向。连铸坯存在的缺陷主要表现为裂纹、偏析、非金属夹杂及鼓肚变形等，这些缺陷的形成与连铸坯凝固过程中的传输现象密切相关。

The main aim is to obtain high nondefective percentage of cast slab and billet.Technicians for continuous casting technology always regard quality of continuous cast slaband billet as a developing direction of the continuous casting technology.Main defects in continuous cast slab and billet appear as crack,segregation,non-metalicinclusion as well as bulging deformation. The formation of these dcfects are closely relative totransmission phenomena of the solidification process.