然后介绍了改善夹杂物去除和提高钢洁净度的铸机操作。
Then, operation practices at continuous caster to improve inclusion removal and steel cleanliness are reviewed.
可为生产高洁净度管线钢的工艺选择和成分控制提供参考。
It also provides reference for the process choice and content control of high cleaness pipeline production.
超级钢的主要特征是高洁净度和超细晶粒组织，在不增加任何合金元素的情况下，其强度、韧性和使用寿命提高一倍。
Ultra steel is characterized by its higher cleanness and ultra-fine grain, thus it has higher strength, toughness and longer life even without addition of more alloying elements.
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