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1. 发明专利

JP2008254041A Method of rolling rolled stock 有权
标题翻译：滚动滚筒的方法
公开(公告)号：JP2008254041A
公开(公告)日：2008-10-23
申请号：JP2007100398
申请日：2007-04-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： ARAKI SHINICHI , NITTA HIROYUKI , TAKAHASHI KOUYA , IWATANI TATSUO
IPC分类号： B21B1/26
摘要： PROBLEM TO BE SOLVED: To improve the productivity of steel products while securing prescribed quality of material of the steel products. SOLUTION: This method includes: a stage where a rolled stock is rolled by reciprocating rolling of a prescribed number N of passes with a second roughing mill in a section where rough rolling is performed in a hot-rolling line; a stage where, after that, the rolled stock is moved to the rear side of third and fourth roughing mills, stood by and the rolled stock is cooled down to a prescribed temperature and a stage where, after that, the cooled rolled stock is once returned to the front side of the third and fourth roughing mills and, after that, rolled with the third and fourth roughing mills. When processing a plurality of rolled stocks continuously, the reciprocating rolling of an even number N1 of the maximum possible passes within the prescribed number N of passes is performed to a succeeding material with the second roughing mill while a preceding material is cooled on the rear side of the third and fourth roughing mills. After that, after starting the rolling of the preceding material with the third and fourth roughing mills, the rest rolling of the succeeding material with the second roughing mill is performed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提高钢产品的生产率，同时确保钢产品的规定质量的材料。解决方案：该方法包括：在热轧生产线进行粗轧的部分中，通过第二粗轧机往往轧制规定数量的通道轧制轧制坯料的阶段; 在此之后，将轧制坯料移动到第三和第四粗轧机的后侧，并将轧制坯料冷却至规定温度，然后冷却的轧制坯料一次返回到第三和第四粗轧机的前侧，之后用第三和第四粗轧机轧制。当连续加工多个轧制坯料时，在第二粗轧机中对先后材料进行冷却，对规定数量N次通过期间的最大可能通过次数N1的往复轧制进行后续处理的第三和第四个粗轧机。之后，在第三和第四粗轧机开始轧制前述材料之后，用第二粗轧机进行后续材料的剩余轧制。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009248163A Method of manufacturing hot-rolled steel sheet 有权
标题翻译：制造热轧钢板的方法
公开(公告)号：JP2009248163A
公开(公告)日：2009-10-29
申请号：JP2008101011
申请日：2008-04-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HAYASHIDA TERUKI , ARAKI SHINICHI , KARASHIMA HIROSUKE
IPC分类号： B21B45/00 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To make a good surface shape by suppressing the generation of scale defects in hot rolling.
SOLUTION: A method has a rough rolling stage where a rough-rolled steel sheet is obtained by performing the rough rolling of a slab manufactured by continuous casting and a finish rolling stage where a hot-rolled sheet is obtained by hot-rolling the rough rolled steel sheet with a finishing mill which is constituted of a plurality of rolling stands. In the finish rolling stage, the surface temperature T of the steel sheet and the concentration M of oxygen are adjusted so that the relationship between the surface temperature T (°C) of the steel sheet after passing through each rolling stand and the concentration M (vol.%) of the oxygen in the atmospheric gas which is in contact with the surface of the steel sheet satisfies the following numerical formula (1): M≤36.4-0.022×T.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过抑制热轧中的氧化皮缺陷的产生来形成良好的表面形状。解决方案：一种粗轧阶段，其中通过连续铸造制造的板坯的粗轧和精轧阶段获得粗轧钢板，其中通过热轧获得热轧板具有由多个轧制机架构成的精轧机的粗轧钢板。在精轧阶段，调整钢板的表面温度T和氧浓度M，使得通过轧制机架后的钢板的表面温度T（℃）与浓度M（与钢板表面接触的气氛气体中的氧的体积百分比满足下式（1）：M≤36.4-0.022×T。版权所有（C）2010，JPO＆INPIT

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