建议通过严格控制碳硫含量，提高钛含量和钢水纯净度，以提高钢板的时效冲击韧性。
The ageing impact toughness of the medium plate can be increased by controlling carbon and sulfur content and improving titanium content and the purity of the molten steel.
本发明能够减少钢水在浇注过程中的二次氧化，降低钢水内生夹杂物，提高钢水纯净度。
The argon protective device can reduce secondary oxidization in the casting process of molten steel, reduce the mixed sundries in the molten steel and improve the molten steel purity degree.
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