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公开(公告)号：US06511553B1
公开(公告)日：2003-01-28
申请号：US09403232
申请日：1999-10-15
申请人： Junji Nakashima , Takashi Sawai , Mitsuo Uchimura , Wataru Yamada , Shigenori Tanaka , Yasuharu Sakuma , Akinobu Murasato
发明人： Junji Nakashima , Takashi Sawai , Mitsuo Uchimura , Wataru Yamada , Shigenori Tanaka , Yasuharu Sakuma , Akinobu Murasato
IPC分类号： C22C3806
CPC分类号： C22C38/001 , C21C7/0006 , C21C7/06 , C22C38/04 , C22C38/14 , Y02P10/212
摘要： The present invention provides a steel for steel sheets excellent in workability and showing significantly decreased formation of surface defects, and a method of deoxidizing molten steel for the steel for steel sheets which prevents nozzle clogging during continuous-casting the molten steel. That is, the steel for steel sheets excellent in workability, comprises, based on weight, 0.0001 to 0.0030% of C, up to 0.03% of Si, 0.05 to 0.30% of Mn, up to 0.015% of P, 0.001 to 0.015% of S, up to 0.008% of Al, 0.02 to 0.08% of Ti, 0.0005 to 0.0020% of Ca, 0.0005 to 0.01% of N, optionally containing at least one of 0.001 to 0.02 wt % of Nb and 0.0001 to 0.0010 wt % of B, and the balance of Fe and unavoidable impurities. Moreover, the deoxidation method of the steel for steel sheets comprises properly adjusting addition amounts of Ca and Al as deoxidizing agents for the steel having the chemical composition mentioned above so that the chemical composition of the nonmetallic inclusions is controlled to prevent clogging of the casting nozzle.
摘要翻译： 本发明提供一种加工性优异，表面缺陷形成显着降低的钢板用钢，以及钢水连续铸造时防止喷嘴堵塞的钢板钢的脱氧方法。 也就是说，加工性优异的钢板用钢的重量为C：0.0001〜0.0030％，Si：0.03％以下，Mn：0.30〜0.30％，P：0.015％以下，0.001〜0.015％ 的S，至多0.008％的Al，0.02〜0.08％的Ti，0.0005〜0.0020％的Ca，0.0005〜0.01％的N，任选含有0.001〜0.02重量％的Nb和0.0001〜0.0010重量％的至少一种， 的B，余量为Fe和不可避免的杂质。 此外，钢板的钢的脱氧方法包括适当地调节Ca和Al的添加量作为具有上述化学组成的钢的脱氧剂，使得控制非金属夹杂物的化学组成以防止铸造喷嘴的堵塞 。
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公开(公告)号：US5725689A
公开(公告)日：1998-03-10
申请号：US553283
申请日：1995-11-28
申请人： Seiki Nishida , Junji Nakashima , Osami Serikawa , Ikuo Ochiai
发明人： Seiki Nishida , Junji Nakashima , Osami Serikawa , Ikuo Ochiai
CPC分类号： C22C38/00
摘要： The present invention provides a steel wire rod of high strength and a steel wire of high strength excellent in fatigue characteristics used for an extra fine steel wire of high strength and high ductility which is used for a steel cord, a belt cord, and the like for reinforcing rubbers and organic materials such as a tire, a belt and a hose, and for a steel wire of high strength which is used for a rope, a PC wire, and the like. The steel of the present invention comprises, based on mass, 0.7 to 1.1% of C, 0.1 to 1.5% of Si, 0.1 to 1.5% of Mn, up to 0.02% of P, up to 0.02% of S and the balance Fe and unavoidable impurities, and contains nonmetallic inclusions at least 80% of which comprise 4 to 60% of CaO+MnO, 22 to 87% of SiO.sub.2 and 0 to 46% of Al.sub.2 O.sub.3 and have melting points up to 1,500.degree. C.
摘要翻译： PCT No.PCT / JP94 / 01665 Sec。 371日期：1995年11月28日 102（e）日期1995年11月28日PCT 1994年10月5日PCT PCT。 出版物WO95 / 26422 日期：1995年10月5日本发明提供一种高强度高强度钢线材和强度高，耐疲劳特性优良的钢丝，用于钢帘线用的超强度高延展性的超细钢丝，带 帘线等用于增强橡胶和有机材料如轮胎，带和软管，以及用于绳索，PC线等的高强度钢丝。 本发明的钢基于质量含有0.7-1.1％的C，0.1-1.5％的Si，0.1-1.5％的Mn，至多0.02的P，至多0.02的S，余量为Fe 和不可避免的杂质，并且含有至少80％的非金属夹杂物包含4〜60％的CaO + MnO，22〜87％的SiO 2和0〜46％的Al 2 O 3，熔点高达1500℃。
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3.发明授权公开(公告)号：US08048197B2
公开(公告)日：2011-11-01
申请号：US12070264
申请日：2008-02-15
CPC分类号： C21C7/06 , C21C7/0006 , C21C7/068
摘要： The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.
摘要翻译： 本发明提供一种低碳钢板和低碳钢板坯，通过防止钢水中的夹杂物的凝集和微细地分散在钢板或板坯中的夹杂物，能够可靠地防止表面缺陷的形成， 钢板和板坯。 本发明提供了一种方法，该方法包括以下步骤：使钢水脱碳以产生高达0.01质量％的碳浓度，通过加入Al对钢水进行预脱氧，以使溶解氧浓度从0.01到 0.04质量％，添加Ti和至少La和/或Ce，铸造钢水，以及通过该方法获得的钢板和钢坯。
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公开(公告)号：US20140190655A1
公开(公告)日：2014-07-10
申请号：US14237757
申请日：2011-11-09
申请人： Takehiko Toh , Junji Nakashima , Yasuo Maruki , Norimasa Yamasaki , Keiji Tsunenari , Kenji Umetsu
发明人： Takehiko Toh , Junji Nakashima , Yasuo Maruki , Norimasa Yamasaki , Keiji Tsunenari , Kenji Umetsu
IPC分类号： B22D11/115
CPC分类号： B22D11/115 , B22D11/041 , B22D11/10
摘要： A continuous casting apparatus for steel includes: a casting mold for casting a molten steel with a pair of long side walls and a pair of short side walls; a submerged entry nozzle which discharges the molten steel into the casting mold; and an electromagnetic stirring device which is disposed along each external surface of each of the long side walls and stirs an upper portion of the molten steel within the casting mold. A curved portion which is convexly curved toward the electromagnetic stirring device in plan view is formed at least at a position where the curved portion faces the submerged entry nozzle on each of the long side walls, and each of the long side walls including the curved portion has a uniform thickness. The shortest horizontal distance between a top which is a most depressed position when an internal surface of the curved portion is seen in plan view and an outer peripheral surface of the submerged entry nozzle is 30 mm to 80 mm in a range from a lower end portion of the electromagnetic stirring device to a position higher than an upper end portion thereof by 50 mm when viewed along a vertical direction.
摘要翻译： 一种用于钢的连续铸造设备包括：用于铸造具有一对长侧壁和一对短侧壁的钢水的铸造模具; 一个将钢水排放到铸模中的浸入式喷嘴; 以及电磁搅拌装置，其沿着每个长侧壁的每个外表面设置并搅拌铸模内的钢水的上部。 至少在弯曲部分面对每个长侧壁上的浸没入口喷嘴的位置处形成有朝平面图向电磁搅拌装置弯曲的弯曲部分，并且每个长侧壁包括弯曲部分 具有均匀的厚度。 当在平面图中看到弯曲部分的内表面的最凹陷位置的顶部与浸入式喷嘴的外周表面之间的最短水平距离在从下端部分的范围内为30mm至80mm 的电磁搅拌装置沿着垂直方向观察到比其上端部高出50mm的位置。
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公开(公告)号：US20080149298A1
公开(公告)日：2008-06-26
申请号：US12070264
申请日：2008-02-15
CPC分类号： C21C7/06 , C21C7/0006 , C21C7/068
摘要： The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.
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6.发明授权公开(公告)号：US07347904B2
公开(公告)日：2008-03-25
申请号：US10481800
申请日：2002-06-28
IPC分类号： C22C38/00
CPC分类号： C21C7/06 , C21C7/0006 , C21C7/068
摘要： The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.
摘要翻译： 本发明提供一种低碳钢板和低碳钢板坯，通过防止钢水中的夹杂物的凝集和微细地分散在钢板或板坯中的夹杂物，能够可靠地防止表面缺陷的形成， 钢板和板坯。 本发明提供了一种方法，该方法包括以下步骤：使钢水脱碳以产生高达0.01质量％的碳浓度，通过加入Al对钢水进行预脱氧，以使溶解氧浓度从0.01到 0.04质量％，添加Ti和至少La和/或Ce，铸造钢水，以及通过该方法获得的钢板和钢坯。
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