包装用热轧低碳带钢的开发
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摘要
分析了包装用镀锡板表面缺陷形成的原因,并对冷轧基板——热轧低碳钢的化学成分﹑生产工艺路线进行了重新设计和制定。认为夹杂物的存在破坏了热轧带钢组织的连续性,在冷轧大变形条件下,产生裂纹并扩展形成表面缺陷。在生产过程中,不使用脱硫设备和精炼炉的情况下,通过精确控制终点温度和确保一次倒炉出钢、炉后吹氩气等措施使有害元素、夹杂物得到了有效控制。同时通过优化轧制过程工艺参数,产品的表面质量和力学性能均达到了设计指标,成功开发了包装用热轧低碳带钢。
The causes of surface defect of tinplate for packaging were analyzed,and the chemical composition and production process of hot rolled low carbon steel,the cold rolled substrate,were redesigned and formulated. It is considered that inclusions destroy the continuity of hot rolled strip structure,and cracks and surface defects occur under the condition of large deformation during cold rolling. In the production process,without desulfurization equipment and refining furnace,the harmful elements and inclusions can be effectively controlled by precisely controlling the endpoint temperature and ensuring the tapping and argon blowing after furnace. By optimizing the rolling process parameters,the surface quality and mechanical properties of product have reached the design target,and the hot rolled low carbon strip for packaging has been successfully developed.
The causes of surface defect of tinplate for packaging were analyzed,and the chemical composition and production process of hot rolled low carbon steel,the cold rolled substrate,were redesigned and formulated. It is considered that inclusions destroy the continuity of hot rolled strip structure,and cracks and surface defects occur under the condition of large deformation during cold rolling. In the production process,without desulfurization equipment and refining furnace,the harmful elements and inclusions can be effectively controlled by precisely controlling the endpoint temperature and ensuring the tapping and argon blowing after furnace. By optimizing the rolling process parameters,the surface quality and mechanical properties of product have reached the design target,and the hot rolled low carbon strip for packaging has been successfully developed.
引文
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[2]李俊.生产镀锡原板的冶金工艺控制原理[J].宝钢技术,1998,(4):40~44.
[3]刘学伟,赵楠. MRT~4CA镀锡板表面短条缺陷原因分析[J].物理测试,2015,33(5):54~56.
[4]曾广俊.热轧带钢氧化铁皮的成因及解决措施研究[J].科技风,2015,(12):62~62.
[5]唐杰.镀锡板表面“小白点”产生机理及预防措施的研究[D].上海:华东理工大学,2012.
[6]徐仲,黄兴桥,李宁,等.原板成分及晶粒度对镀锡板耐蚀性的影响[J].材料保护,2005,38(11):25~27.
[7]刘爱平.高端镀锡基板表面质量的控制研究[J].河北冶金,2018,(7):66~68.
[8]张彩军,贾雅楠,朱立光.高品质镀锡板生产技术与夹杂物控制[J].河南冶金,2014,22(4):1~7.
[9]胡恒法,赵楠,周丽萍,等.热轧工艺对低碳铝镇静钢组织性能的影响[J].热加工工艺,2013,42(1):23~26.
[10]李子潇.低碳铝镇静钢在控轧控冷过程中渗碳体析出机理研究[D].华北理工大学,2015.