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1. 发明专利

JP2011184737A Method for protecting lining-refractory in converter 有权
$Method for protecting lining-refractory in converter$
标题翻译：保护转炉内衬的方法
公开(公告)号：JP2011184737A
公开(公告)日：2011-09-22
申请号：JP2010051263
申请日：2010-03-09
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YOKOTA HIDEKI , TANABE KENTARO , KUZUME CHIAKI , ISOBE KAZUHIKO , KATAOKA ATSUICHIRO , TAKEUCHI TOMOHIDE , SAITO YOSHITOSHI
IPC分类号： C21C5/44 , C21C5/28 , C21C5/36
摘要： PROBLEM TO BE SOLVED: To surely scatter slag till the upper part of a furnace, even in the case of being the drastically lower fluidity of the slag after tapping off a molten steel, in a method for protecting a lining-refractory in a converter in which the spattered slag is coated on the lining-refractory in the converter by spattering the slag while injecting gas onto the left slag in the converter.
SOLUTION: In the method for protecting the lining-refractory in the converter, in the case that T. Fe content in the slag left in the converter is ≤15 mass% at
摘要翻译：要解决的问题：为了确保将炉渣分散到炉子的上部，即使在出钢后，炉渣的流动性显着降低的情况下，也可以采用保护衬里耐火材料的方法一种转炉，其中通过溅射炉渣同时在转炉中将气体喷射到左炉渣上，将喷溅的炉渣涂覆在转炉内的衬里耐火材料上。解决方案：在转炉中保护耐火材料的方法中，在转炉炉渣中的T.Fe含量在钢水温度<1650℃时≤15质量％脱碳完成时的脱碳吹制的完成时间，或在脱碳吹制完成时的钢水温度≥1650℃时≤10质量％，使炉渣中的T.Fe含量变成≥15％通过在转炉内留下炉渣的状态下将氧气注入炉渣中，通过从上部将炉渣上的气体注入炉渣中，将炉渣涂在转炉内的衬里耐火材料上。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2006097110A Steel sheet and slab superior in surface quality and inner quality, and manufacturing method therefor 有权
标题翻译：表面质量和内部质量的钢板和板坯超级及其制造方法
公开(公告)号：JP2006097110A
公开(公告)日：2006-04-13
申请号：JP2004286878
申请日：2004-09-30
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HASEGAWA HAJIME , YAMADA WATARU , KIMURA YOSHIAKI , TANABE KENTARO , SASAI KATSUHIRO
IPC分类号： C22C38/00 , B22D1/00 , B22D11/00 , C21C7/06 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet and a slab each with adequate surface quality and inner quality, which hardly causes the clogging of a nozzle in a continuous casting process, a surface defect due to cluster-shaped inclusions, and pressed cracks due to large-sized inclusions, and to provide a manufacturing method therefor.
SOLUTION: The steel sheet or the slab includes, by mass, 0.05% or less S, 0.001% or more REM (rare earth elements) and 0.0004% or less Ca, in the steel; and contains non-metallic inclusions existing in the inner part, which have an average composition in the following range: a mass ratio (REM oxides/Ti oxide) of REM oxides to Ti oxide is 0.1 to 5.0, while satisfying the condition that Ti oxide is 10% to 95%, REM oxides are 5% to 90% (among them, La
2 O
3 is less than 40%), Al
2 O
3 is less than 50%, CaO is less than 5%, and S is less than 5%.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种钢板和板坯，其具有足够的表面质量和内部质量，其在连续铸造过程中几乎不引起喷嘴堵塞，由于簇状夹杂物引起的表面缺陷，以及由于大尺寸夹杂物而产生挤压裂纹，并提供其制造方法。钢板或钢板在钢中含有0.05％以下的S，0.001％以上的REM（稀土元素）和0.0004％以下的Ca; 并且含有存在于内部的非金属夹杂物，其平均组成在以下范围内：REM氧化物与Ti氧化物的质量比（REM氧化物/ Ti氧化物）为0.1〜5.0，同时满足Ti氧化物为10％〜95％，REM氧化物为5％〜90％（其中，La O 3 小于40％），Al / SB> O 3 小于50％，CaO小于5％，S小于5％。版权所有（C）2006，JPO＆NCIPI

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