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发明公开
CN106929791A 一种镀锌工序的控制方法 无效 - 驳回

一种镀锌工序的控制方法
摘要：
本发明公开了一种镀锌工序的控制方法，所述方法为控制镀锌生产线镀后冷却模式，自锌锅向冷却塔方向由下到上，镀后冷却风机各段风机的开度如下：1#风机：45‑95%，2#风机：45‑95%，3#风机：45‑60%，4#风机：25‑50%；塔顶辊温度≤170℃。本发明适用于镀锌双相钢组织获得及厚锌层表面质量提高，通过合理控制镀后冷却模式，控制喷冷风机的开度，利于双相钢马氏体及铁素体获得；同时能够控制厚锌层（200g/m2/双面）表面出现的鱼刺缺陷。本方法生产的镀锌双相钢产品性能命中率高，合金添加量少；厚锌层产品无鱼刺缺陷，表面均匀性好。
摘要（英）：

The invention discloses a control method of a zinc plating working procedure. According to the method, the after-plating cooling mode of a zinc plating production line is controlled, and in the direction from a zinc pot to a cooling tower from bottom to top, according to the opening degrees of various sections of fans of a cooling fan after plating, the opening degree of the first fan ranges from 45% to 95%, the opening degree of the second fan ranges from 45% to 95%, the opening degree of the third fan ranges from 45% to 60%, and the opening degree of the fourth fan ranges from 25% to 50%; and the tower top roller temperature is smaller than or equal to 170 DEG C. The method is suitable for obtaining a zinc plating dual-phase steel structure and improving thick zinc layer surface quality, and dual-phase steel martensite and ferrite can be obtained easily by reasonably controlling the after-plating cooling mode and controlling the opening degrees of the cold spray fans; and meanwhile fishbone defects appearing on the surface of a thick zinc layer (200 g/m<2>/dual face) can be controlled. A zinc plating dual-phase steel product produced through the method is high in performance shoot square and low in alloy adding quantity; and the thick zinc layer product has no fishbone defect, and surface uniformity is good.

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