-
公开(公告)号：US06379425B1
公开(公告)日：2002-04-30
申请号：US09588465
申请日：2000-06-06
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
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。
-
公开(公告)号：US5759232A
公开(公告)日：1998-06-02
申请号：US814484
申请日：1997-03-10
申请人： Yukio Takahashi , Shuji Takeuchi , Nagayasu Bessho
发明人： Yukio Takahashi , Shuji Takeuchi , Nagayasu Bessho
CPC分类号： F27B1/20 , Y10S266/90
摘要： A method of charging an iron scrap melting cupola with iron scrap and coke enables the iron scrap to be melted with high energy efficiency. The charging pipe feed is set at a level "h" which meets the condition of h .ltoreq. (r-r') tan .theta., and iron scrap of a quantity Ws meeting the condition of Ws .ltoreq. 1/3.multidot..pi.r.sup.3 .multidot.tan .theta..multidot..rho..sub.s is charged through the charging pipe, followed by charging of coke, wherein h represents the height of the charging feed above the material in the cupola (meters), r represents the inside radius of the cupola (meters), r' represents the inside radius of the charging pipe (meters), .theta. represents the angle of repose of the iron scrap (degrees), Ws represents the quantity of iron scrap per cycle (kg/ch), and .rho..sub.s represents the bulk specific gravity of the iron scrap (kg/m.sup.3).
摘要翻译： 用废铁和焦炭装入废铁熔融圆顶炉的方法使铁屑以高能量效率熔化。 充电管进料设定在满足h
-
公开(公告)号：US06557623B2
公开(公告)日：2003-05-06
申请号：US09959858
申请日：2001-11-09
IPC分类号： B22D11108
CPC分类号： B22D11/115 , B22D11/10 , B22D41/50
摘要： Molten steel is poured using an immersion nozzle and a direct current magnetic field zone is applied to a cast slab over the entire width in the thickness direction thereof at a predetermined distance below the molten metal level in a continuously-casting mold. The immersion nozzle is provided with ejection holes located in at least upper and lower stages, at least one lower ejection hole is disposed such that these satisfy the following formula (1). The supply rate of molten steel from the upper ejection holes is set smaller than the rate consumed by solidification in an upper pool, and a particular solute element is added to the molten steel in the upper pool. 0
摘要翻译： 使用浸渍喷嘴浇注熔融钢，并且在连续铸造模具中，在熔融金属水平以下预定距离处，在铸坯的厚度方向的整个宽度上施加直流磁场区。 浸入式喷嘴设置有位于至少上部和下部的喷射孔，至少一个下部喷射孔被设置为使得它们满足下列公式（1）。 来自上喷射孔的钢水的供给速度设定为小于上池中固化所消耗的速度，并且特定的溶质元素被添加到上池中的钢水中。其中，θ：下喷射的向下角 孔（°）; w：模具宽度方向的长度（m）; andh：从下喷孔中心到磁极高度中心的距离（m）。
-
公开(公告)号：US5882377A
公开(公告)日：1999-03-16
申请号：US793687
申请日：1997-03-05
申请人： Kimiharu Aida , Shuji Takeuchi , Nagayasu Bessho , Tomomichi Terabatake , Yasuo Kishimoto , Hiroshi Nishikawa , Fumio Sudo
发明人： Kimiharu Aida , Shuji Takeuchi , Nagayasu Bessho , Tomomichi Terabatake , Yasuo Kishimoto , Hiroshi Nishikawa , Fumio Sudo
CPC分类号： C21C5/005 , C21C5/35 , C22B34/32 , C21C7/0006
摘要： In this invention, the smelting reduction operation can be carried out in a high efficiency by charging a carbonaceous material in such an amount that total surface area is not less than 60 m.sup.2 per 1 ton of slag weight. Carbon substance finely particulating through thermal crumbling under a high-temperature atmosphere inside the vessel is used as the carbonaceous material, whereby it is possible to stably conduct the smelting reduction while controlling the scattering of the carbonaceous material, and also the erosion, particularly locally erosion of refractory in the smelting reduction furnace, which was a serious problem in the conventional technique, can considerably be decreased to largely prolong the service life of refractory.
摘要翻译： PCT No.PCT / JP96 / 02813 Sec。 371日期1997年3月5日 102（e）1997年3月5日PCT PCT 1996年9月27日PCT公布。 公开号WO97 / 12066 日期1997年3月4日在本发明中，通过以每1吨矿渣重量的总表面积不小于60m 2的量加入碳质材料，可以高效率地进行熔融还原操作。 作为碳质材料，使用在容器内的高温气氛下通过热破碎而微细化的碳物质，由此可以在控制碳质材料的飞散的同时稳定地进行熔炼还原，并且特别是局部侵蚀 在常规技术中是严重问题的熔融还原炉中的耐火材料可以显着降低，从而大大延长耐火材料的使用寿命。
-
公开(公告)号：US4592778A
公开(公告)日：1986-06-03
申请号：US745922
申请日：1985-06-18
申请人： Tetsuya Fujii , Nobuo Harada , Shuji Takeuchi , Yoshiei Kato , Hideo Nakamura , Toshikazu Sakuraya , Yasuhiro Habu
发明人： Tetsuya Fujii , Nobuo Harada , Shuji Takeuchi , Yoshiei Kato , Hideo Nakamura , Toshikazu Sakuraya , Yasuhiro Habu
摘要： A process for producing an extremely low carbon steel in a top- and bottom-blown converter. The process is characterized in top-blowing a mixed gas of oxygen gas and an inert gas onto a molten steel in the top- and bottom-blown converter. The mixed gas is blown through a top-blowing lance at the final decarburization stage, while a gas (selected from a group consisting of an inert gas, oxygen gas and a mixture of oxygen and an inert gas) is bottom-blown into the molten steel in the converter.
摘要翻译： 一种用于在顶吹和底吹转炉中生产极低碳钢的方法。 该方法的特征在于将顶部和底部吹制转炉中的氧气和惰性气体的混合气体顶吹到钢水上。 在最终脱碳阶段，通过顶吹喷枪吹入混合气体，同时将气体（选自惰性气体，氧气和氧气和惰性气体的混合物）从底部吹入熔融 钢在转炉。
-
公开(公告)号：US06712124B1
公开(公告)日：2004-03-30
申请号：US09714161
申请日：2000-11-17
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： B22D11049
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：US5299627A
公开(公告)日：1994-04-05
申请号：US845232
申请日：1992-03-03
IPC分类号： B22D11/055 , B22D11/059 , B22D11/111 , B22D11/04 , B22D11/07
CPC分类号： B22D11/111 , B22D11/055 , B22D11/059
摘要： Steel is continuously cast while adding a mold powder using a vertical continuous casting mold having two pairs of mold surfaces which form a casting cavity, wherein the surface temperature of the mold is kept at 700.degree. C. or more by forming the mold surfaces of a Ni-Cr alloy, and a mold powder having a solidifying point lower than the surface temperature is used so that the mold powder is maintained in a liquid-phase state.
摘要翻译： 使用具有形成铸造腔的两对模具表面的垂直连续铸模添加模具粉末，连续铸造钢，其中模具的表面温度通过形成模具表面而保持在700℃以上 使用Ni-Cr合金和具有低于表面温度的凝固点的模具粉末，使得模具粉末保持在液相状态。
-
9.发明授权
公开(公告)号：US5106411A
公开(公告)日：1992-04-21
申请号：US516209
申请日：1990-04-30
申请人： Yuji Miki , Hidenari Kitaoka , Tetsuya Fujii , Shuji Takeuchi , Kenichi Sorimachi , Toshikazu Sakuraya , Fumio Sudo
发明人： Yuji Miki , Hidenari Kitaoka , Tetsuya Fujii , Shuji Takeuchi , Kenichi Sorimachi , Toshikazu Sakuraya , Fumio Sudo
IPC分类号： C22B9/02
CPC分类号： C22B9/02 , Y02P10/234
摘要： A method of removing non-metallic inclusions from a molten metal by allowing the molten metal to pass through at least first and second vessels which are intermediate between a ladle and a mold. The molten metal is made to stay in the vessel for a period not shorter than 40 seconds while a horizontal rotation is imparted to the molten metal in the first vessel. The molten metal is then transferred from the first vessel to the second vessel. The molten metal in the second vessel is then heated. This method is suitably carried out by an apparatus comprising a first vessel having a discharge opening at its bottom and surrounded by a rotational magnetic field generating device for centrifugation of the molten metal in the first vessel, and a second vessel for receiving the molten metal discharged from the first vessel and provided with a heating device for heating the molten metal received therein.
-
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。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.021 秒)
