The present work shows that the nonuniform thickness of solidified skin of slab created by the nonuniform cooling rate of the skin in the crystallizer is main cause for slab surface cracking.
试验结果得知，坯壳在结晶器内冷却不均，使坯壳凝固层厚薄不同，是铸坯产生表面裂纹的主要原因。
2
The invention solves the problem that cast ingot produces cracks caused by stress concentration as the existing crystallizer is not even in water-cooling distribution.
本发明解决了现有的结晶器因水冷分布不均，致使铸锭因应力集中产生铸锭裂纹的问题。
3
In the casting process, the withdrawal straightener has to overcome the friction force from the crystallizer and resistance from the secondary cooling device.