使用膨胀型复合模铸保护渣保护浇注钢锭，普遍存在的一个问题是容易使钢锭产生头部积渣这一表面缺陷。
A general problem in protecting the casting ingots by using expanded complex mould casting mold powder is the surface defect that slag deposition can be evolved easily in ingots head.
采用计算机最优化技术结合实验方法研制了模铸硅钢用保护渣。
Some new kinds of protecting slag for casting of silicon steel are developed by means of computer optimizing technology combined with testing.
为了防止浮在钢液表面上的熔渣进入钢锭模，钢液从盛钢桶底部放出。
In order to prevent the molten slag on the top of the steel from entering the ingot moulds, the steel is poured from the bottom of the ladle.
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