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1. 发明专利

JP2011122214A Method for dephosphorizing molten iron 审中-公开
标题翻译：用于去磷化铁的方法
公开(公告)号：JP2011122214A
公开(公告)日：2011-06-23
申请号：JP2009281797
申请日：2009-12-11
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MIYATA MASAKI , TAMURA TEPPEI , HIGUCHI YOSHIHIKO
IPC分类号： C21C5/36 , C21C1/02 , C21C5/30 , C21C5/35
摘要： PROBLEM TO BE SOLVED: To provide a method in which the lowering of the iron yield caused by slopping can be restrained and a high dephosphorizing ratio can be obtained in this method for dephosphorizing molten iron by top-blowing CaO-contained powdery material together with the top-blowing oxygen onto the molten iron while blowing the top-blowing oxygen flowing amount to 2.0-5.0 Nm
3 /min/ton of the molten iron and the bottom-blowing gas amount to 0.2-0.6 Nm
3 /min/ton of the molten iron in the top-bottom blowing converter.
SOLUTION: The mass ratio CaO/O of the CaO contained as the CaO powdery material and the top-blowing oxygen is made to be in the range of formula (A) 0.036763×Qo
2 -0.26492×QB+0.366557 2 -0.26492×QB+0.939606 (wherein, Qo
2 : the top-blowing oxygen flowing amount (Nm
3 /min/ton of the molten iron), QB: the bottom-blowing gas flowing amount (Nm
3 /min/ton), CaO: average CaO supplying speed (kg/min/ton) of CaO contained in the powdery material during top-blowing of the CaO-contained powdery material, and O: the average mass supplying speed (kg/min/ton) of the top-blowing oxygen during top-blowing of the CaO-contained powdery material).
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种方法，其中通过顶吹含CaO粉末材料的这种铁水脱磷方法可以抑制由坡度引起的铁产量降低，并且可以获得高脱磷比与顶吹氧一起吹入铁水，同时将吹出的氧气流量吹入铁水的2.0-5.0Nm 3 /分钟/分钟/吨，底吹气体量为0.2 -0.6Nm 3 /分钟/分钟/吨铁水。＆lt; P＆gt;解决方案：作为CaO粉末材料和顶吹氧气所含CaO的CaO / O的质量比在式（A）的范围内0.036763×Qo 2 - 0.26492×QB + 0.366557 -0.26492×QB + 0.939606（其中，顶吹氧气流量（Nm < SP> 3 /分/铁水），QB：底吹气流量（Nm 3 /分/吨），CaO：平均CaO供给速度（kg /分钟/吨）含CaO粉末材料的顶吹过程中粉末状材料中所含的CaO，以及○：顶吹吹氧时的顶吹氧气的平均供料速度（kg / min / ton）含CaO的粉末状材料）。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010163658A Top-blowing lance for refinement of molten metal 有权
标题翻译：热轧金属精炼的最佳选择
公开(公告)号：JP2010163658A
公开(公告)日：2010-07-29
申请号：JP2009006713
申请日：2009-01-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MIYATA MASAKI , HIGUCHI YOSHIHIKO , TAMURA TEPPEI
IPC分类号： C21C5/46
摘要： PROBLEM TO BE SOLVED: To provide a top-blowing lance for the refinement of a molten metal, which can not only reduce a variation of a dynamic pressure in a circumferential direction but also optimize a distribution of the dynamic pressure in a radial direction, and thereby further can reduce a spitting quantity.
SOLUTION: The top-blowing lance 1 for the refinement of the molten metal has 3 or more holes of nozzles 2 arranged on the same circumference at equal spaces. In an XYZ rectangular coordinate system which is determined so that a lance center axis is regarded as a Z-axis and an outlets of the nozzles are positioned on an X-axis, when angles formed by respective projected lines of the nozzle axis onto a YZ plane and an XZ plane and Z axis are defined as α and β respectively, the angles satisfy 0 1
2 /(d
1
2 +n×d
2
2 ))×100, satisfies 3.2 to 10, wherein d
1 represents a diameter (mm) of the center hole; d
2 represents diameters (mm) of other holes; and n represents the number of other arranged holes. In the case of a lance with multiple holes having different diameters, in which the diameters of other holes are not equal, (d
1
2 +n×d
2
2 ) is replaced with (d
1
2 +4S/π), where the total cross sectional area of the nozzles except the center hole is represented by S.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于精炼熔融金属的顶吹喷枪，其不仅可以减小圆周方向上的动态压力的变化，而且可以优化径向中的动态压力的分布方向，从而进一步减少吐痰量。解决方案：用于精炼熔融金属的顶吹喷枪1具有在相同的空间上布置在相同圆周上的喷嘴2的3个或更多个孔。在XYZ直角坐标系中，将喷枪中心轴视为Z轴并且喷嘴的出口位于X轴上，当由喷嘴轴的各个投影线形成的角度到YZ 平面，XZ平面和Z轴分别被定义为α和β，角度满足0 1 2 n×d 2 2 ））×100，满足3.2〜10，其中d 1 表示中心孔的直径（mm） d 2 表示其他孔的直径（mm） n表示其他排列孔的数量。在具有不同直径的多孔的喷枪的情况下，其他孔的直径不相等，（d 1 2 + n×d 2 2 ）被替换为（d 1 2 + 4S /π），其中喷嘴的总横截面积除中心孔由S.代表。（C）2010，JPO＆INPIT

3. 发明专利

JP2007302960A Steelmaking method using reduced iron 有权
标题翻译：使用减少铁的钢铁方法
公开(公告)号：JP2007302960A
公开(公告)日：2007-11-22
申请号：JP2006133289
申请日：2006-05-12
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MIYATA MASAKI , HIGUCHI YOSHIHIKO , SAKA KENJI , ENDO TAKATOMO
IPC分类号： C21C1/02 , C21B13/14 , C22B1/16 , C22B5/10 , C22B7/02
CPC分类号： Y02P10/216
摘要： PROBLEM TO BE SOLVED: To provide a process having excellent productivity with which the production quantity of iron and steel can be increased by recycling inexpensive iron source into a steelmaking process. SOLUTION: A steelmaking method includes: charging reduced iron obtained by heating and reducing the dust containing iron together with carbon-containing material, into a molten pig iron dephosphorizing furnace and melting or melting and reducing it by bringing the above charged reduced iron into contact with the hot metal and recovering this melted and reduced iron as the molten iron into the hot metal. In the above steelmaking method, it is preferable that sulfur content in the reduced iron is 0.5-1.1 mass%, or after melting or melting and reducing by charging the reduced iron into the hot metal dephosphorizing furnace, the desulfurizing treatment is applied. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有优异的生产率的方法，通过将廉价的铁源回收到炼钢工艺中，可以提高钢铁的生产量。解决方案：炼钢方法包括：将通过将含铁的粉尘与含碳材料一起加热并还原的还原铁加入熔融生铁脱磷炉中并通过将上述带电还原铁与铁水接触并将这种熔融和还原的铁作为铁水回收到热金属中。在上述炼钢方法中，还原铁中的硫含量优选为0.5〜1.1质量％，或者通过将还原铁加入到热金属脱磷炉中进行熔融或熔融还原后，进行脱硫处理。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2004149823A Method for producing nonoriented silicon steel sheet 有权
公开(公告)号：JP2004149823A
公开(公告)日：2004-05-27
申请号：JP2002314116
申请日：2002-10-29
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NUMATA MITSUHIRO , FUJIMURA HIROSHI , HIGUCHI YOSHIHIKO
IPC分类号： C21C7/00 , C21C7/076 , C22C38/00 , C22C38/06 , H01F1/16
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a production method by which a nonoriented silicon steel sheet having excellent magnetic properties can stably be fed. SOLUTION: The nonoriented silicon steel sheet comprises, by mass, ≤0.004% C, 0.1 to 1.0% Si, 0.2 to 0.6% Mn, COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2003160838A SEAMLESS STEEL PIPE AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：JP2003160838A
公开(公告)日：2003-06-06
申请号：JP2001360746
申请日：2001-11-27
申请人： SUMITOMO METAL IND
发明人： NUMATA MITSUHIRO , HIGUCHI YOSHIHIKO , KUSHIDA TAKAHIRO , KURAHO HIROFUMI
IPC分类号： C21C5/28 , C21C7/00 , C21D9/08 , C22C33/04 , C22C38/00 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a seamless steel pipe having high strength and superior SSC (sulfide stress-cracking corrosion) resistance, and a manufacturing method therefor. SOLUTION: The seamless steel pipe contains (1) by mass%, 0.15-0.35% C, 0.1-1.5% Si, 0.1-2.5% Mn, 0.005% or less S, 0.15% or less Al, and 0.0005-0.0050% Ca, and has a composition ratio of nonmetallic inclusions in the steel which satisfies expressions (1), (2), and (3): (Al 2 O 3 )/(CaS)≤4 (1), (CaS)/(CaO)≤1.5 (2), and 0.43≤(CaO)/(Al 2 O 3 )≤9 (3). (2) The method for manufacturing the seamless steel pipe (1), comprises a Ca-containing substance to molten steel between a ladle refining step and a continuous casting step, so as to satisfy the expression (4): -0.07×ln(t)+0.3≤WC a ≤-0.097×ln(t)+0.55...(4). COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003073727A Lance for reduced pressure smelting 审中-公开
标题翻译：减轻压力的原因
公开(公告)号：JP2003073727A
公开(公告)日：2003-03-12
申请号：JP2001261500
申请日：2001-08-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NUMATA MITSUHIRO , HIGUCHI YOSHIHIKO , TAGO YUKARI
IPC分类号： C22B9/04 , C21C7/072 , C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a lance for reduced pressure smelting, which gives high smelting efficiency and is hardly affected by a degree of vacuum.
SOLUTION: This lance has a nozzle 2 at the lance nose, which comprises a throat 3 with an inside diameter d, and an enlarged portion 5 with an inside diameter D and length L in the nozzle tip side of the throat, and a flute 4 with depth h, which has concave on an opposite side to the nozzle tip against the throat nose, in a border step between the throat and the enlarged portion. The values of d, D, h, and L, preferably satisfy a condition expressed by the formula (1)-(3): 0.1D≤d≤0.4D...(1), 0.1(D-d)≤h≤1.0(D-d)...(2), and 1.0d≤L≤5.0d...(3).
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种用于减压熔炼的喷枪，其提供高熔炼效率并且几乎不受真空度的影响。解决方案：该喷枪在喷枪鼻部具有喷嘴2，其包括具有内径d的喉部3和在喉部的喷嘴尖端侧具有内径D和长度L的扩大部分5，以及凹槽4 具有深度h，其在喉部和扩大部分之间的边界台阶中在与鼻子鼻部相对的喷嘴头的相对侧上具有凹陷。 d，d，h和L的值优选满足由式（1） - （3）表示的条件：0.1D <= d <= 0.4D ...（1），0.1（Dd） h <= 1.0（Dd）...（2）和1.0d <= L <= 5.0d ...（3）。

7. 发明专利

JP2002220636A EXTRA LOW-CARBON THIN STEEL SHEET AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：JP2002220636A
公开(公告)日：2002-08-09
申请号：JP2001261501
申请日：2001-08-30
申请人： SUMITOMO METAL IND
发明人： NAKAI SHUJI , KANAI TATSUO , HIGUCHI YOSHIHIKO , HIRASHIRO TADASHI
IPC分类号： B21B3/00 , C21C7/10 , C21D9/48 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/20 , C22C38/26 , C22C38/28 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a thin steel sheet with a thickness of 0.30 mm or more, which can inhibit failures during forming such as pin hole and press crack initiating from inclusions, even when extra low-carbon steel containing 0.010% or less C is provided to a use such as a case for an electric motor or a case for an oil cleaner, for which complicated high deformation is needed. SOLUTION: This thin steel sheet comprises having a chemical composition containing 0.010% or less C, 0.5% or less Si, 1.5% or less Mn, 0.12% or less P, 0.030% or less S, 0.10% or less Ti, 0.08% or less Al, 0.0080% or less N, and making the total number of observed non-metallic inclusions in 60 visual fields based on JIS G0555, as 20 or less. This manufacturing method comprises controlling (FeO)+(MnO) in ladle slag during continuous casting, to be 15% or less, and a throughput rate during casting to be 5 Ton/minute or less.

8. 发明专利

JP2001254116A METHOD OF PRODUCING LOW NITROGEN STEEL 失效
公开(公告)号：JP2001254116A
公开(公告)日：2001-09-18
申请号：JP2000066713
申请日：2000-03-10
申请人： SUMITOMO METAL IND
发明人： HIGUCHI YOSHIHIKO
IPC分类号： C21C5/35 , C21C5/34
摘要： PROBLEM TO BE SOLVED: To provide a producing method of low nitrogen steel, by which the invasion of air into a furnace developed at the blowing end stage in a converter, can easily be prevented. SOLUTION: (1) In a decarburizing refining which top-blows oxygen and bottom-blows any one or more kinds among Ar, CO, CO2 and hydrocarbon gas, a ratio (Q/V) of the bottom-blown gas flowing rate Q (m3 (normal state)/s) and the volume V (m3) in the converter is regulated to >=0.002 (1/s). (2) Further, this ratio (Q/V) is regulated to

9. 发明专利

JP2001214237A ALUMINUM KILLED STEEL 失效
公开(公告)号：JP2001214237A
公开(公告)日：2001-08-07
申请号：JP2000167502
申请日：2000-06-05
申请人： SUMITOMO METAL IND
发明人： HIGUCHI YOSHIHIKO , NUMATA MITSUHIRO
IPC分类号： B22D11/00 , B22D11/10 , B22D11/108 , C22C38/00 , C22C38/06 , C22C38/18
摘要： PROBLEM TO BE SOLVED: To provide aluminum killed steel small in defects caused by inclusions and bubbles and also small in rust caused by Ca. SOLUTION: (1) In aluminum killed steel containing, by mass, 0.0001 to 0.004% Ca, 0.0001 to 0.001% Mg and 0.01 to 0.3% Al, the product between the Ca and Mg contents is 2×10-8 to 2×10-6, and also, the ratio (Ca/Mg) is 0.2 to 30. (2) Aluminum killed steel contains, by mass, 0.0002 to 0.008% S, and in which the product between the Ca and S contents (by mass) is 2×10-5 or less, and also, the product between the Mg and S content is 5×10-6 or less. (3) Aluminum killed steel contains, by mass, 0.0005 to 0.006% O, and in which the product between the Ca and O contents (mass %) is 1.5×10-5 or less, and also, the product between the Mg and O contents is 4×10-6 or less. (4) Aluminum killed steel contains Ti and N, and in which the product between the Ti and N contents (mass %) is 2×10-4 or less. (5) Aluminum killed steel is composed of extra-low carbon steel, common steel or stainless steel.

10. 发明专利

JP2001152236A METHOD OF REFINING MOLTEN IRON 失效
公开(公告)号：JP2001152236A
公开(公告)日：2001-06-05
申请号：JP33161499
申请日：1999-11-22
申请人： SUMITOMO METAL IND
发明人： HIGUCHI YOSHIHIKO
IPC分类号： C21C7/04 , C21C1/00
摘要： PROBLEM TO BE SOLVED: To provide a refining method by which the iron yield is high and fuel gas having high calorific power can be obtained by using hydrocarbon as stirring gas for molten iron in the refining method for adding oxygen or oxygen-containing material into the molten iron and the hydrocarbon as the stirring gas. SOLUTION: (1) In a defining furnace for adding the oxygen or the oxygen- containing material into the molten iron, the hydrocarbon is added into the molten iron in the refining furnace and hydrogen concentration in the exhaust gas produced in the refining furnace is regulated to 2-20 vol.%. (2) The adding speed of the hydrocarbon is controlled and the hydrocarbon concentration in the exhaust gas is regulated to 2-20 vol.% and the exhaust gas is recovered as the fuel gas. (3) The hydrocarbon is added into the molten iron from the flowing passage except the outermost tube in a multi-tube.

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