The paper mainly study effect on head slab quality of ultra-low carbon steel of first state.
本文主要研究超低碳钢初期状态对头坯质量的影响。
The slab caster machine head is the most decisive caster section which has an influence on the surface quality of the cast strand.
板坯连铸机机头是对铸坯表面质量有决定性影响的因素。
A cast starting number is defined. The results show that the head slab cleanliness is unstable until the number reaches 0.17, which can help slab quality classification.
结果表明，头坯洁净度在开浇准数达到0.17后趋于稳定，这可为实际生产中铸坯质量评级提供帮助。
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