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1. 发明专利

JP2008093711A Continuous casting method of steel 有权
标题翻译：钢的连续铸造方法
公开(公告)号：JP2008093711A
公开(公告)日：2008-04-24
申请号：JP2006279116
申请日：2006-10-12
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： ITO YOSHIKI , KOGA MICHIKAZU , WATANABE SHINSUKE , MISHIMA TAKESHI , TANIZAWA YOSHINORI , SASAME KINGO , SAZUKA HIROSHI , KAWAMURA TADAYASU
IPC分类号： B22D11/128
摘要： PROBLEM TO BE SOLVED: To obtain sufficient improvement effect of internal quality of steel without requiring complicated device configuration.
SOLUTION: In the continuous casting method of the steel, the amount and the thrusting force of rolling reduction are controlled for each pair of reduction rolls or for each segment including a plurality of pairs of reduction rolls, when conducting rolling-reduction of a cast slab 2 along a thickness direction using a plurality of pairs of reduction rolls in the upstream side and the downstream side of a crater end where solidification in the inner part of a cast slab is completed. When applying rolling-reduction to the cast slab 2, the rolling-reduction is conducted such that the amount of the rolling-reduction of the cast slab 2 executed by each of four pairs of reduction rolls or each of segments 1a, 1b reaches the target amount of rolling-reduction. Thereafter, the pressure thrusting value acting on each of four pairs of reduction rolls or each of segments 1a, 1b is controlled so as to become the target pressure thrusting value, by increasing or decreasing the amount of the rolling-reduction of the cast slab 2 executed by each of four pairs of reduction rolls or each of segments 1a, 1b. Thus, generation of center segregation and porosity are effectively prevented, so that a cast slab having excellent internal quality is obtained.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了获得钢的内部质量的足够的改进效果，而不需要复杂的装置构造。解决方案：在钢的连续铸造方法中，对于每对还原辊或包括多对还原辊的每个段控制轧制量的量和推力，当进行轧制还原时铸坯2沿着厚度方向使用多个成对的压延辊，在铸坯的内部部分固化的火山口端的上游侧和下游侧完成。当对铸坯2进行轧制还原时，进行轧制还原，使得由四对还原辊或各段1a，1b中的每一个执行的铸坯2的轧制还原量达到目标轧制量减少。此后，通过增加或减少铸造板坯2的轧制量减少量来控制作用在四对还原辊或段1a，1b中的每一个上的压力推压值，以便成为目标压力推压值由四对还原辊或段1a，1b中的每一个执行。因此，有效地防止了中心偏析和孔隙率的产生，从而获得了具有优异内部质量的铸坯。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2008069429A Converter steelmaking facility 有权
标题翻译：转炉炼钢设备
公开(公告)号：JP2008069429A
公开(公告)日：2008-03-27
申请号：JP2006250959
申请日：2006-09-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO , YAMADA MUNEAKI
IPC分类号： C21C5/28 , C21C1/00
摘要： PROBLEM TO BE SOLVED: To provide a converter steelmaking facility with which a desired productivity can be secured without increasing the cycle time of a pre-treating furnace for molten iron while restraining the facility area and the facility expense to the minimum.
SOLUTION: In the converter steelmaking facility provided with the converter-type pre-treating furnace for performing the pre-treatment for molten iron and a converter-type decarburizing furnace for decarburize-blowing to the molten iron treated with the above pre-treating furnace, this pre-treating furnace and the decarburizing furnace are arranged in the same ridge and the tapping of the molten iron in the pre-treating furnace and the pouring of the molten iron in the decarburizing furnace are arranged so as to be the same ridge side. The transporting distance of a ladle for pouring the molten iron can be shortened by adopting such constitution, and comparing with the conventional converter steelmaking facility and further, the effective operation can be performed in the physical distribution by making the one-directional flowing and the shortage of the tap-to-tap time can be obtained.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在不增加铁水预处理炉的循环时间的同时将设备面积和设备费用限制在最小的范围内来提供期望的生产率的转炉炼钢设备。解决方案：在具有用于进行铁水预处理的转炉型预处理炉的转炉炼钢设备和用上述预处理的铁水进行脱碳吹制的转炉式脱碳炉中，处理炉中，将该预处理炉和脱碳炉配置在相同的脊部，并且预处理炉中的铁水的攻丝和脱碳炉中的铁水的倾倒被设置为相同脊边通过采用这种结构可以缩短用于浇注铁水的钢包的运输距离，并且与传统的转炉炼钢设备相比，还可以通过使单向流动和短缺来实现物理分配的有效运行的抽头时间可以获得。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2008055512A Continuously cast slab, and method for producing steel sheet using the same 审中-公开
标题翻译：连续铸造板，以及使用该钢板生产钢板的方法
公开(公告)号：JP2008055512A
公开(公告)日：2008-03-13
申请号：JP2007264626
申请日：2007-10-10
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO
IPC分类号： B22D11/00 , B22D11/124 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel sheet having reduced surface defects, by which the problem of surface flaws generated near the end part in the width direction of a hot rolled steel sheet is solved without providing particular equipment nor increasing special process load.
SOLUTION: As for the shape of a short side 2 in the cross-sectional face of a slab, when the minimum value (α) of the crossed angle between a long side 1 and a straight line obtained by connecting a slab edge part 3 and a point on the short side is ≤80°, the distance in a width direction from the slab edge part 3 to the center of the short side (the amount (d) of bulging in the short side) is controlled to be -3 to 5 mm, and in the case of α>80°, the bulging amount (d) is controlled to be -3 to 10 mm. Further, the minimum value α is monitored during continuous casting, and then the continuous casting conditions are controlled such that the bulging amount (d) is within the above range in accordance with the value α.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种具有减少的表面缺陷的钢板的制造方法，由此在不提供特定设备的情况下解决在热轧钢板的宽度方向上端部附近产生的表面缺陷的问题也不增加特殊的工艺负载。＆lt; P＆gt;解决方案：对于板坯的横截面中的短边2的形状，当长边1和直线之间的交叉角的最小值（α）第3部分，短边的点为≤80°，从板坯边缘部3向短边的中心的宽度方向的距离（短边的膨胀量（d））控制为 -3〜5mm，在α> 80°的情况下，凸出量（d）控制在-3〜10mm。此外，在连续铸造期间监测最小值α，然后控制连续铸造条件使得凸出量（d）根据值α在上述范围内。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2004025272A Continuously cast slab and method of producing steel sheet using the same 审中-公开
公开(公告)号：JP2004025272A
公开(公告)日：2004-01-29
申请号：JP2002188129
申请日：2002-06-27
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO
IPC分类号： B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a steel sheet having reduced surface defects by which the problem of surface flaws generated in the vicinity of the end part in the width direction of a hot rolled steel sheet is solved without providing special equipment nor increasing special stages.
SOLUTION: As for the shape of the short edge in the cross-sectional face of a slab, when the minimum value (α) of the crossed angle between the long edge and a straight line obtained by connecting a slab edge part and a point on the short edge is ≤80°, the distance in a width direction from the slab edge part to the center of the short edge (the amount ofbulging in the short side: d) is controlled to -3 to 5 mm, and in the case of α>80°, (d) is controlled to -3 to 10 mm. Further, α is monitored on continuous casting, and the continuous casting conditions are controlled so that (d) lies within the above range in accordance with α.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2003073771A Cold-rolled steel sheet and manufacturing method therefor 有权
标题翻译：冷轧钢板及其制造方法
公开(公告)号：JP2003073771A
公开(公告)日：2003-03-12
申请号：JP2001270810
申请日：2001-09-06
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO , NAKAI SHUJI , MUTO AKIFUMI
IPC分类号： B22D11/00 , B22D11/18 , B22D11/20 , C22C38/00 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To provide a high-strength cold rolled steel sheet, which has superior surface quality as well as superior corrosion resistance, and hence is stably employed for a steel sheet for a skin plate of automobiles, and provide a manufacturing method therefor.
SOLUTION: The cold-rolled steel sheet has a steel composition including 0.010% or less C, 0.1% or less Si, 0.50% or less Mn, 0.10% or less P, 0.030% or less S, 0.50% or less Cu, 0.002-0.10% Ti, 0.08% or less sol.Al, 0.0080% or less N, and 0.30% or less Ni, and has 1.4 or less of a ratio of P concentration in a P segregated part, which is formed in one-sixth part of the sheet thickness inward from the surface along the short-transverse direction, to P concentration in the whole area in a short-transverse direction.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种具有优异的表面质量和优异的耐腐蚀性的高强度冷轧钢板，因此稳定地用于汽车皮板的钢板，并提供其制造方法。解决方案：冷轧钢板具有包括0.010％以下的C，0.1％以下的Si，0.50％以下的Mn，0.10％以下的P，0.030％以下的S，0.50％以下的Cu，0.002 -0.10％Ti，0.08％以下的sol.Al，0.0080％以下的N和0.30％以下的Ni，并且在六分之一中形成的P偏析部分中的P浓度的比例为1.4以下从表面沿短横方向向内的板厚的一部分，在短横方向的整个区域的P浓度。

6. 发明专利

JP2006328546A Method for producing clean steel 有权
标题翻译：生产清洁钢的方法
公开(公告)号：JP2006328546A
公开(公告)日：2006-12-07
申请号：JP2006216608
申请日：2006-08-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO , AIZAWA MASAYUKI , YAMADA MUNEAKI
IPC分类号： C21C7/00 , C21C7/10
摘要： PROBLEM TO BE SOLVED: To provide a method capable of easily producing a clean steel extremely low in oxygen content without impairing productivity by performing the whole process of a secondary refining under a pressure-reducing condition.
SOLUTION: In the producing method for clean steel, the secondary refining for molten steel is separated into a first process and a second process, and in the first process, the refining using slag under reduced pressure to the molten steel held in a ladle and the temperature-rising of the molten steel, are performed, and successively, in the second process, the treatment for separating and removing inclusions by circulating the molten steel between the ladle and a reduced pressure vessel. It is desirable to be ≤1.33×10
4 Pa vacuum degree in the atmosphere in contact with the molten steel, ≤1.25 L/min/t supplying quantity of inert gas from the bottom part of the ladle, ≤50 kW input power and ≥10 min the circulating time of the molten steel.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：待解决的问题：提供一种能够通过在减压条件下进行二次精炼的全过程而容易地制造氧含量极低的清洁钢而不损害生产率的方法。解决方案：在清洁钢的制造方法中，将钢水的二次精炼分离为第一工序和第二工序，在第一工序中，使用渣将精炼至保持在钢水中的钢水钢包和钢水的升温，并且在第二工序中，通过使钢水在减压容器之间循环钢水分离除去夹杂物的处理。在与钢水接触的气氛中，希望≤1.33×10 4 Pa真空度，从钢包底部供给惰性气体≤1.25L/ min / t， ≤50kW的输入功率和≥10min的钢水循环时间。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2004337922A Continuously cast slab of extra low carbon steel, and method for manufacturing the same 有权
标题翻译：超低碳钢的连续铸造坯料及其制造方法
公开(公告)号：JP2004337922A
公开(公告)日：2004-12-02
申请号：JP2003137742
申请日：2003-05-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SASAME KINGO
IPC分类号： B22D11/108 , B22D11/00 , B22D11/18 , C22C38/00 , C22C38/04
摘要： PROBLEM TO BE SOLVED: To fundemantally solve the quality problem of extra low carbon steel by a surer method at low cost. SOLUTION: When continuously casting molten steel of ≤0.003% C, mold powder is supplied onto the molten steel in a mold and casting is performed under the conditions under which the carbon (C) content included in the mold powder and the amount of throughput satisfy the following conditions: when the amount of throughput at the time of casting is ≤4.0 t/min, the carbon (C) content in the mold powder is ≥1.5 to ≤2.5%; and when the amount of throughput in the mold powder is COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：以廉价的方式有效解决超低碳钢质量问题。
解决方案：当连续铸造≤0.003％C的钢水时，将模具粉末在模具中的钢水上供给，在铸模中包含的碳（C）含量和量的生产量满足以下条件：当铸造时的生产量为≤4.0t/ min时，成型粉末中的碳（C）含量≥1.5〜≤2.5％; 当模具粉末中的生产量为<4.0t / min时，成型粉末中的碳（C）含量≥1.0〜2.0％。由此，获得了与板坯表面相距低于3mm以下的渗碳层≥0.01％C的连续铸造板坯。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2003048045A Method for uniformly heating molten steel in tundish 有权
标题翻译：在土耳其均匀加热钢的方法
公开(公告)号：JP2003048045A
公开(公告)日：2003-02-18
申请号：JP2001234892
申请日：2001-08-02
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KURANAGA TOMOAKI , SASAME KINGO
IPC分类号： H05H1/26 , B22D11/10 , B22D11/11 , B22D41/005
摘要： PROBLEM TO BE SOLVED: To provide a means for uniformly heating molten steel in a tundish without deterioration of the quality in a cast slab, increase of the cost and erosion of the refractory.
SOLUTION: In a method for heating the molten steel in the tundish for continuous casting with the plasma arc, such as to show in figure 2, the tundish in which the molten steel depth b at the heating position with plasma torches 4 is ≤1 m and a horizontal distance a from a molten steel pouring hole to a molten steel spouting hole becomes at ≥4 times of the molten steel depth b at the heating position and also, the plasma torches 4 composed of pair of a cathode and an anode parallel arranged with the molten steel flow from a molten steel pouring hole 2 to a molten steel spouting hole 6 in the tundish, are disposed and heated. It is desirable to separate the disposed positions of the plasma torches to ≥1000 mm from the position of the molten steel pouring hole, and to heat at 700-1300 mm of the distance between the torches.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供均匀加热中间包中的钢水而不会降低铸坯质量的方法，增加了耐火材料的成本和腐蚀。解决方案：在图2中示出的用于加热中间包中用于连续铸造等离子体电弧的钢水的方法中，其中在等离子体炬4的加热位置处的钢水深度b为<= 1 m，从钢水浇注孔到钢水喷射孔的水平距离a成为加热位置的钢水深度b的> = 4倍，而且，由一对阴极和阳极构成的等离子体焰炬4 平行地配置有从钢水浇注孔2到钢水浇注孔6的钢水流入中间包的钢水喷射孔6。期望将等离子体炬的设置位置从钢水浇注孔的位置分离为> = 1000mm，并且在700-1300mm之间加热炬之间的距离。

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