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首页> 外文期刊>ISIJ international >Representative Technologies for Hot Charging and Direct Rolling in Global Steel Industry
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Representative Technologies for Hot Charging and Direct Rolling in Global Steel Industry

机译：全球钢铁行业中热轧和直接轧制的代表性技术

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Prompted by the oil crisis and global warming, global steelmakers have begun to focus attention on the huge potential of hot charging and direct rolling processes for saving energy and reducing greenhouse gas emissions. New equipment and technologies have been developed in this field. In details, Japan has upgraded its reheating furnaces, applied induction heating and laser welding to endless hot rolling, developed the pair-cross mill for finish rolling and adjusted process parameters to eliminate surface defects of Nb-containing steel. Korea has also achieved endless rolling via super deformation shear joining and developed its own set of systems for the shape control of hot rolled steel products. Europe and America have designed flameless burners and reversing four-high mill stands together with their flying gage change technology and hydraulics systems for reheating and rolling. China has applied chamfered mould technology to eliminate edge and corner defects of microalloyed steel and the semi-endless rolling process to complete its intergrated production. This paper reviews development status of hot rolling and compares technologies and their effects on energy consumption, product quality, productivity and greenhouse gas emissions at global steel works.
机译：在石油危机和全球变暖的推动下，全球钢铁制造商已开始将注意力集中在热装料和直接轧制工艺的巨大潜力上，以节省能源并减少温室气体排放。在该领域已经开发了新的设备和技术。具体来说，日本已经对其加热炉进行了升级，将感应加热和激光焊接应用于无限热轧，开发了用于精轧的双交叉轧机，并调整了工艺参数以消除含铌钢的表面缺陷。韩国还通过超变形剪切连接实现了无限循环的轧制，并开发了一套自己的系统来控制热轧钢产品的形状。欧洲和美国设计了无焰燃烧器和可逆四辊轧机机架，以及用于重新加热和轧制的飞标更换技术和液压系统。中国已应用倒角模具技术消除了微合金钢的边缘和角部缺陷，并采用了半环形轧制工艺来完成其综合生产。本文回顾了热轧的发展状况，并比较了技术及其对全球钢铁厂能耗，产品质量，生产率和温室气体排放的影响。

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