公开(公告)号：US06764528B2

公开(公告)日：2004-07-20

申请号：US10203268

申请日：2002-08-08

申请人： Seiji Nabeshima ,  Shuji Takeuchi ,  Hisashi Ogawa ,  Yuki Nabeshima ,  Yasuyuki Masumoto

发明人： Seiji Nabeshima ,  Shuji Takeuchi ,  Hisashi Ogawa ,  Yuki Nabeshima ,  Yasuyuki Masumoto

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。

公开(公告)号：US07628196B2

公开(公告)日：2009-12-08

申请号：US10766910

申请日：2004-01-30

申请人： Hiroshi Yamane ,  Nagayasu Bessho ,  Yuji Miki ,  Shuji Takeuchi ,  Tadasu Kirihara

发明人： Hiroshi Yamane ,  Nagayasu Bessho ,  Yuji Miki ,  Shuji Takeuchi ,  Tadasu Kirihara

IPC分类号： B22D11/00 ,  B22D27/02

CPC分类号： B22D11/115

摘要： During continuous casting of metals, a non-moving, vibrating magnetic field is applied to a molten metal in a casting mold to impose only vibration on the molten metal. This continuous casting method can produce a cast slab much less susceptible to flux entrainment, capture of bubbles and non-metal inclusions near the surface of the molten metal, and surface segregation. The magnetic field is preferably produced by arranging electromagnets in an opposing relation on both sides of the mold to lie side by side in the direction of longitudinal width of the mold, and supplying a single-phase AC current to each coil. The single-phase AC current preferably has frequency of 0.10 to 60 Hz. A static magnetic field can be applied intermittently in the direction of thickness of a cast slab. This technique can produce a cast slab substantially free from the flux entrainment and the surface segregation. Preferably, the static magnetic field is intermittently applied under setting of an on-time t1=0.10 to 30 seconds and an off-time t0=0.10 to 30 seconds. Also, the static magnetic field is preferably applied to the surface of the molten metal.

摘要翻译： 在连续铸造金属的过程中，将非移动的振动磁场施加到铸模中的熔融金属上，以在熔融金属上施加振动。 这种连续铸造方法可以产生不易熔融夹带，在熔融金属表面附近捕获气泡和非金属夹杂物以及表面偏析的铸坯。 磁场优选通过在模具的两侧上以相对的关系布置电磁体，以沿模具的纵向宽度方向并排放置，并且向每个线圈提供单相交流电流来产生。 单相交流电流的频率优选为0.10〜60Hz。 静态磁场可以在铸坯的厚度方向间歇地施加。 这种技术可以产生基本上没有助焊剂夹带和表面分离的铸坯。 优选地，在导通时间t1 = 0.10〜30秒，关断时间t0 = 0.10〜30秒的设定下，静态施加磁场。 此外，静态磁场优选地施加到熔融金属的表面。

公开(公告)号：US20070272388A1

公开(公告)日：2007-11-29

申请号：US10552414

申请日：2004-01-29

申请人： Yuji Miki ,  Shuji Takeuchi ,  Yuko Takeuchi ,  Akira Yamauchi

发明人： Yuji Miki ,  Shuji Takeuchi ,  Yuko Takeuchi ,  Akira Yamauchi

IPC分类号： B22D27/02 ,  B22D11/10

CPC分类号： B22D11/115

摘要： At least three electromagnets are disposed along the longitudinal direction of a mold. While the electromagnets generate a vibrating magnetic field, peak positions of the vibrating magnetic field is shifted in the longitudinal direction of the mold.

摘要翻译： 至少三个电磁铁沿着模具的纵向设置。 当电磁铁产生振动磁场时，振动磁场的峰值位置沿着模具的纵向移动。

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

IPC分类号： B22D11/00 ,  B22D11/108 ,  C21C7/00 ,  C21C7/06 ,  C21C7/064 ,  C22C38/00 ,  C22C38/02

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。

公开(公告)号：US06379425B1

公开(公告)日：2002-04-30

申请号：US09588465

申请日：2000-06-06

申请人： Naoki Kikuchi ,  Shuji Takeuchi ,  Akiharu Takao ,  Mototatsu Sugizawa ,  Shigeru Ogura

发明人： Naoki Kikuchi ,  Shuji Takeuchi ,  Akiharu Takao ,  Mototatsu Sugizawa ,  Shigeru Ogura

IPC分类号： C21C530

CPC分类号： C21C1/025 ,  C21C7/0645

摘要： Desulfurization is carried out by blowing CaO into molten iron, and a gas mixture of an inert gas and a hydrocarbon gas is used as a carrier. The ratio of the hydrocarbon gas to the desulfurizing agent is maintained in the range of from about 2.0 to about 50 Nl/kg. This desulfurizing method improves the desulfurization efficiency of the desulfurizing agent, increases the productivity of the desulfurizing process, and reduces the amount of slag generated in the desulfurizing process. Alternatively, a desulfurizing flux is blown into the molten iron together with a carrier gas comprising a gas mixture of an inert gas and a hydrocarbon gas or an inert gas alone at the start of desulfurization. The hydrocarbon gas in the carrier gas is increased, is added, or the unit gas is replaced by the hydrocarbon gas at adequate timing, whereby the desulfurization efficiency is improved.

摘要翻译： 通过将CaO吹入铁水中进行脱硫，使用惰性气体和烃气体的气体混合物作为载体。 烃气体与脱硫剂的比率保持在约2.0至约50Nl / kg的范围内。 该脱硫方法提高脱硫剂的脱硫效率，提高脱硫工序的生产率，并且减少脱硫过程中产生的炉渣的量。 或者，在脱硫开始时，将脱硫助熔剂与包含惰性气体和烃气体或惰性气体的气体混合物的载气一起吹入铁水中。 载气中的烃气体被添加，​​或者在合适的时间单位气体被烃气体代替，从而提高了脱硫效率。

公开(公告)号：US06328784B1

公开(公告)日：2001-12-11

申请号：US09605741

申请日：2000-06-29

申请人： Naoki Kikuchi ,  Shuji Takeuchi ,  Mototatsu Sugizawa ,  Shigeru Ogura

发明人： Naoki Kikuchi ,  Shuji Takeuchi ,  Mototatsu Sugizawa ,  Shigeru Ogura

IPC分类号： C21C102

CPC分类号： C21C1/025 ,  C21C1/06 ,  C21C7/0645 ,  Y02P10/212

摘要： A process for desulfurizing a molten iron alloy in which a desulfurizing agent is applied to the molten iron alloy under agitation. Concurrently, a gas containing a hydrocarbon gas is blown onto the bath surface of the molten iron alloy, or a substance generating a hydrocarbon gas is added to the bath surface.

摘要翻译： 在搅拌下向铁水合金中施加脱硫剂的铁水合金脱硫方法。 同时，将含有烃气体的气体吹入到铁水合金的熔池表面，或者向浴槽表面添加产生烃气体的物质。