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论叙了衡阳钢管厂LF前-LF后-VD后-中包-管坯-钢管的各工序显微夹杂物在钢中的数目变化及粒径分布,分析了显微夹杂物在圆铸坯径向截面的分布以及钢管坯沿横向和纵向的数目变化,探讨了夹杂物的来源。结果表明,应该实施增加脱氧用铝量,使用活性石灰,改进中包保护渣等措施。
On the number of LF inclusions - tube - tube - steel tube in the process of LF LF - LF after the former - in the package - the number of micro-inclusions in the steel in steel changes and particle size distribution, analysis of micro-inclusions in the round billet Radial section of the distribution and the number of steel billets along the horizontal and vertical changes to explore the source of inclusions. The results show that measures should be taken to increase the amount of aluminum used for deoxidation, use active lime, and improve the mold flux in the bag.