新一代热轧板带材表面氧化铁皮控制技术的现状与进展

热轧板带材作为海洋、交通、能源等行业的支柱性原材料，力学性能与尺寸精度一直是衡量其质量的最重要指标。然而随着相关行业的转型升级，对其表面质量也提出了严苛的要求，导致大量钢材产品由于表面不过关被降级或判废。由于钢材的氧化在热轧过程中贯穿始终，并受到合金元素及诸多工艺参数的交互影响，很难实现结构、厚度、均匀性的精准控制。尽管前期围绕着“黑皮钢”，已经开发出了一些氧化铁皮的控制方法，但仅局限于强度较低、厚度较薄的汽车结构钢。为此，东北大学轧制技术及连轧自动化国家重点实验室开发了新一代热轧板带材表面氧化铁皮控制技术，其研发与应用全面提升了我国热轧钢材产品的表面质量。目前，所生产的系列高表面质量产品已达到了国外企业对钢材表面质量的苛刻要求，成功助力我国钢铁行业产品结构的转型升级。

Development and Current Situation of Hot Strip Rolling Technology in Japan

The mill type and arrangement evolution of hot strip mills, lingkage of caster and mill, and new products development, such as super-steel, AHSS strip, and NANOHITEN strip, etc. , in Japan were introduced. Meanwhile, taking revamping of the hot strip mill in Kashima Works of Sumitomo Metals as a example, the continuous innovation and progress history of hot strip rolling technology in Japan was introduced. It ponited out that there is great signification to develop Chinese hot strip rolling technology or even iron and steel industry by refering Japanese history.