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公开(公告)号：US6117389A
公开(公告)日：2000-09-12
申请号：US160460
申请日：1998-09-24
CPC分类号： C21C7/06 , C21C7/0006 , C21C7/0056
摘要： Titanium killed steel sheets which are not troubled by nozzle clogging while they are produced in a continuous casting process, have few surface defects caused by cluster-type inclusions, and are highly rust resistant, and are formed from a melt of titanium killed steel that contains any one or two of Ca and metals REM in an amount of not smaller than 0.0005% by weight, and wherein the steel contains major oxide inclusions of any one or two of CaO and REM oxides in an amount of from about 5 to 50% by weight, Ti oxides in an amount of not larger than about 90% by weight, and Al.sub.2 O.sub.3 in an amount of not larger than about 70% by weight.
摘要翻译： 在连续铸造中制造时不会受到喷嘴堵塞的钛死亡钢板，簇簇型夹杂物的表面缺陷少，耐锈性高，并且由钛镇静钢的熔融体形成， Ca和金属REM中的一种或两种以不小于0.0005重量％的量存在，并且其中钢含有约5至50重量％的CaO和REM氧化物中的任何一种或两种的主要氧化物夹杂物，其量为约5至50％ 重量的Ti氧化物的量不大于约90重量％，Al 2 O 3的量不大于约70重量％。
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公开(公告)号：US6120578A
公开(公告)日：2000-09-19
申请号：US945668
申请日：1997-10-31
CPC分类号： C21C7/06 , C21C7/076 , Y02P10/242
摘要： An alloy of Al and two or more of Ca, Mg and REM is added as a deoxidizing agent to molten steel, and the amount of Al.sub.2 O.sub.3 in the resulting inclusion is adjusted to a range of 30-85 wt % to obtain an alumina cluster-free Al-killed steel.
摘要翻译： PCT No.PCT / JP97 / 00989 Sec。 371日期1997年10月31日 102（e）日期1997年10月31日PCT 1997年3月25日PCT公布。 公开号WO97 / 36010 PCT 日期1997年2月10日将Al和两种或更多种Ca，Mg和REM的合金作为脱氧剂加入到钢水中，并将所得夹杂物中的Al 2 O 3的量调节至30-85wt％至 获得无氧化铝簇的Al镇静钢。
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公开(公告)号：US5879479A
公开(公告)日：1999-03-09
申请号：US784833
申请日：1997-01-17
IPC分类号： B22D11/00 , B22D11/10 , B22D11/108 , B22D11/12 , C21C7/06 , C21D8/04 , C21D9/48 , C22C38/00 , C22C38/04 , C22C38/14 , C21D9/00
CPC分类号： C22C38/002 , C21C7/06 , C21D8/04 , C22C38/04 , C22C38/14
摘要： Adding aluminum and/or silica to molten steel after decarburization containing about 0.005 percent by weight or less of carbon and about 1.0 percent by weight or less of manganese to form a mildly deoxidized molten steel; adding titanium to the mildly deoxidized molten steel to continue deoxidation so that the molten steel contains about 0.005 percent by weight or less of aluminum, about 0.20 percent by weight or less of silicon and about 0.01 to 0.10 percent by weight of titanium, to form inclusions in the molten steel which essentially consist of a complex oxide of titanium and aluminum, a complex oxide of titanium and silicon, and/or a complex oxide of titanium, aluminum and silicon.
摘要翻译： 在脱碳后，向钢水中加入铝和/或二氧化硅，其含有约0.005重量％以下的碳和约1.0重量％以下的锰，以形成温和脱氧的钢水; 将钛添加到温和脱氧的钢水中以继续脱氧，使得钢水含有约0.005重量％以下的铝，约0.20重量％以下的硅和约0.01〜0.10重量％的钛，以形成夹杂物 在基本上由钛和铝的复合氧化物，钛和硅的复合氧化物和/或钛，铝和硅的复合氧化物组成的钢水中。
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公开(公告)号：US5616188A
公开(公告)日：1997-04-01
申请号：US540868
申请日：1995-10-11
申请人： Yoshiei Kato , Seiji Nabeshima , Yoichi Ito , Kenichi Sorimachi
发明人： Yoshiei Kato , Seiji Nabeshima , Yoichi Ito , Kenichi Sorimachi
摘要： In a method of producing a molten aluminum-killed steel for forming a thin steel sheet, molten steel tapped from a converter is decarburized to a predetermined carbon concentration by using a vacuum degasser, and Al is added to the molten steel in the vacuum degasser to deoxidize the molten steel. A material containing metallic Ca is then added to the molten steel to produce a Ca content of about 0.0005 to 0.005 wt %, and to satisfy [%Ca].times.[%S].ltoreq. about 2.times.1 0.sup.-5. Thereafter, degassing is performed on the molten steel.
摘要翻译： 在制造用于形成薄钢板的熔融铝镇静钢的方法中，通过使用真空脱气机将从转炉挖出的钢水脱碳至预定的碳浓度，并将Al加入真空脱气机中的钢水中 使钢水脱氧。 然后将含有金属Ca的材料添加到钢水中以产生约0.0005至0.005重量％的Ca含量，并且满足[％Ca] x [％S]≤2×10-5。 此后，对钢水进行脱气。
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公开(公告)号：US06764528B2
公开(公告)日：2004-07-20
申请号：US10203268
申请日：2002-08-08
IPC分类号： C21C710
CPC分类号： C21C7/068 , C21C7/04 , C21C7/10 , C22C38/001 , C22C38/004 , C22C38/04
摘要： A method of producing a high nitrogen, ultra low carbon steel suitable to rolling material for use in cold rolled steel sheets having excellent age hardening property by an age hardening treatment after forming by working, with no defects in slabs or steel sheets, reliably, at a reduced cost and with a high productivity is proposed. The method for producing a rolling material for use in ultra low carbon steel sheets at: C≦0.0050 mass % comprises; applying primary decarburization refining to molten iron from a blast furnace, then controlling the composition in the molten steel after primary decarburization refining to a range satisfying the following relation: [mass % N]−0.15[mass % C]≧0.0060, subsequently conducting secondary decarburization refining to a ultra low carbon concentration region while suppressing denitridation using a vacuum degassing facility, then conducting deoxidation by Al and, further, controlling the composition.
摘要翻译： 一种适用于通过加工成型后的时效硬化处理而具有优异的时效硬化性的冷轧钢板的轧制材料的高氮超低碳钢的制造方法，在板坯或钢板中没有缺陷可靠地在 提出了降低成本和高生产率的方法。用于生产用于超低碳钢板的轧制材料的方法为：C <= 0.0050质量％包括：从高炉对铁水进行初级脱碳精炼，然后控制 初次脱碳精炼后的钢水中的组成达到满足以下关系的范围：接着，使用真空脱气装置进行二次脱碳精炼至超低碳浓度区域同时抑制脱氮，然后进行Al脱氧， 组成。
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公开(公告)号：US06841123B1
公开(公告)日：2005-01-11
申请号：US09680088
申请日：2000-10-05
申请人： Seiji Nabeshima , Yasuo Kishimoto , Shuji Takeuchi
发明人： Seiji Nabeshima , Yasuo Kishimoto , Shuji Takeuchi
CPC分类号： C22C38/004 , C21C7/064 , C22C38/002
摘要： The composition of inclusions and the S concentration in steel are controlled in a manner such that, among the CaO-containing oxide inclusions present in a Ca-containing steel, an equilibrium S soluble amount (% S inc.) of at least 80% of the oxide inclusion particles having a particle diameter of 2 μm or more are about 0.03 wt % or less, thereby inhibiting rust formation due to the inclusions, thus solving a problem which has long been of concern in Ca-containing steels.
摘要翻译： 以含有Ca的钢中存在的CaO的氧化物夹杂物中的平均S溶解量（％S inc。）为至少80％以上的方式控制夹杂物的组成和钢中的S浓度 粒径为2μm以上的氧化物夹杂物粒子为0.03重量％以下，因此能够抑制由夹杂物引起的生锈，因此解决了含Ca钢中长期以来关注的问题。
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