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1. 发明专利

JP2007070662A Hot dip galvanized high strength steel sheet and hot dip zincing high strength steel sheet having excellent corrosion resistance and formability, and method for producing them 有权
标题翻译：热镀锌高强度钢板和热镀锌高强度钢板，具有优异的耐腐蚀性和可制造性，以及生产它们的方法
公开(公告)号：JP2007070662A
公开(公告)日：2007-03-22
申请号：JP2005256604
申请日：2005-09-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUJITA NOBUHIRO , OKAMOTO TSUTOMU , MIZOGUCHI TOSHIAKI , TANIGUCHI YUICHI , UEJIMA YOSHIYUKI , GOTO KOICHI , MATSUTANI NAOKI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a TRIP type hot dip galvanized high strength steel sheet and a hot dip zincing high strength steel sheet each having a uniform structure and excellent corrosion resistance and formability, and to provide methods for producing them.
SOLUTION: The hot dip galvanized high strength steel sheet is obtained by applying hot dip galvanizing to a steel sheet having a steel composition comprising, by mass, 0.05 to 0.25% C, ≤2.0% Si, 0.8 to 3% Mn, 0.0010 to 0.1% P, 0.0010 to 0.05% S, 0.0010 to 0.010% N and 0.01 to 2.0% Al, and the balance iron with inevitable impurities, and whose structure comprises retained austenite having a mean carbon content of ≥0.9% by ≥3%, and in which Mn micro-segregation in the range of 1/8t to 3/8t of the sheet thickness t lies in the range satisfying inequality (1): 0.10≥σ/Mn (1); wherein Mn denotes its additional amount; and σ denotes the standard deviation in Mn micro-segregation measurement.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有均匀结构和优异的耐腐蚀性和成形性的TRIP型热镀锌高强度钢板和热浸镀锌高强度钢板，并提供其制造方法。解决方案：通过对具有以质量计0.05％至0.25％C，≤2.0％Si，0.8％至3％Mn的钢组成的钢板进行热浸镀锌而获得热浸镀锌高强度钢板， 0.0010〜0.1％的P，0.0010〜0.05％的S，0.0010〜0.010％的N和0.01〜2.0％的Al，余量的铁与不可避免的杂质组成，其结构为残留奥氏体，平均碳含量≥0.9％≥3 ％，其中在板厚t的1 / 8t至3 / 8t范围内的Mn微偏析在满足不等式（1）的范围内：0.10≥σ/ Mn（1）; 其中Mn表示其附加量; σ表示Mn微分离测定中的标准偏差。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007022817A Treating method of steelmaking slag 有权
标题翻译：炼钢渣处理方法
公开(公告)号：JP2007022817A
公开(公告)日：2007-02-01
申请号：JP2005203275
申请日：2005-07-12
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MUKAWA SUSUMU , TAZAKI TOMOAKI , UEJIMA YOSHIYUKI , AMADA KATSUMI
IPC分类号： C04B5/06
CPC分类号： C04B5/06 , C21B3/06 , Y02W30/543
摘要： PROBLEM TO BE SOLVED: To provide a treating method of steelmaking slag enabling a highly productive stabilizing treatment of steelmaking slag at a low treating cost, and capable of reducing the amount of CO 2 emission. SOLUTION: In a treating method of steelmaking slag in which CaO in the steelmaking slag is carbonated by supplying CO 2 gas while mechanically stirring the steelmaking slag, the steelmaking slag is stirred under a condition wherein particles having a diameter of 10-40 mm are contained in the slag, and the space filling rate η to the stirring vessel is set at 0.03-0.15 to achieve high productivity. Further, η, a vessel diameter D, a number of rotation ω, a water content M, a free lime concentration before the treatment, and a target free lime concentration after the treatment are specified. Further, it has become possible to specify the relation between D and ω, from a target value of the treatment productivity Q, a free lime concentration before the treatment, and a target free lime concentration after the treatment. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种炼钢渣的处理方法，能够以低处理成本实现炼钢渣的高效稳定化处理，并能够减少CO 2 排放量。
解决方案：在炼钢炉渣的处理方法中，其中在机械搅拌炼钢炉渣的同时，通过供应CO 2 气体在炼钢渣中的CaO被碳酸化，炼钢渣在其中颗粒直径为10-40mm的炉渣中，并且将搅拌容器的空间填充率η设定为0.03〜0.15，以实现高生产率。此外，规定η，容器直径D，旋转数ω，水分M，处理前的游离石灰浓度，以及处理后的目标游离石灰浓度。此外，可以从处理生产力Q的目标值，处理前的游离石灰浓度和处理后的目标游离石灰浓度来指定D和ω之间的关系。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006212671A METHOD FOR PREVENTING SURFACE FLAW AT THE TIME OF ROLLING IN Ni-CONTAINING STEEL 有权
标题翻译：用于在含镍钢中滚压时防止表面波的方法
公开(公告)号：JP2006212671A
公开(公告)日：2006-08-17
申请号：JP2005028441
申请日：2005-02-04
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： HOSHINO MANABU , SAITO NAOKI , UEJIMA YOSHIYUKI , KAWABATA NORIMASA
IPC分类号： B21B1/02 , B21B3/00 , C21D8/02 , C22C38/00 , C22C38/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing the generation of surface flaws generated at the time of rolling in an Ni-containing steel.
SOLUTION: In the method, the surface of an Ni-containing steel comprising 1 to 10% Ni is mechanical ground, so as to remove an intergranular oxidized part and a cracked part in the surface, thereafter, the depth d
0 and the steepness parameter θ of the recessed part in the surface of the slab after the surface grinding are allowed to satisfy formula (1), and then, the slab is coated with an oxidation preventive, is heated at 1,000 to 1,180°C, and is rolled. The formula (1) is d
0 ×a×cos
2 θ/R
1 ×10
3 ≤0.004×(T-700)×R
1 +40; wherein, a is the depth ratio after the first pass of the rolling in the depth of the recessed part and a=0.3; d
0 is the depth (mm) of the recessed part in the surface of the slab; θ is the steepness parameter (° ) of the recessed part in the surface of the slab expressed by formula (2); R
1 is the draft ratio on and after the first pass of the rolling and satisfies the sheet thickness of the steel sheet after the first pass of the rolling/the sheet thickness of the steel sheet after the completion of the rolling; and T is the heating temperature (°C). The formula (2) is tanθ=L
0 /d
0 ; wherein, L
0 is the representative length (mm) in the steepness of the recessed part in the surface of the slab.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种防止在含Ni钢中轧制时产生的表面缺陷的方法。解决方案：在该方法中，包含1至10％Ni的含Ni钢的表面是机械研磨的，以除去表面中的晶间氧化部分和裂纹部分，其后深度d 0 ，并且表面研磨后的板坯表面中的凹部的陡度参数θ被允许满足式（1），然后将板坯涂覆有防氧化剂，加热至1,000 至1180℃，并被轧制。公式（1）为d 0 ×a×cos 2 θ/ R 1 ×10 3 ≤0.004 ×（T-700）×R 1 40; 其中，a是在凹陷部分的深度中第一次滚动之后的深度比，a = 0.3; d 0 是板坯表面的凹部的深度（mm） θ是由公式（2）表示的板坯表面凹陷部分的陡度参数（°）; R＆lt; SB＆gt; 1＆lt; / SB＆gt;是在轧制的第一次通过之后和之后的牵伸比，并且在钢板的第一次通过/钢板的厚度完成之后满足钢板的板厚滚动; T为加热温度（℃）。式（2）是tanθ= L 0 / SB> / d 0 ; 其中，L 0 是在板坯的表面中的凹部的陡度中的代表长度（mm）。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005271069A Continuous casting method for molten steel 有权
标题翻译：铸钢连续铸造方法
公开(公告)号：JP2005271069A
公开(公告)日：2005-10-06
申请号：JP2004091828
申请日：2004-03-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKAGI YUKIKO , KONDO KATSUMI , UEJIMA YOSHIYUKI , MIZOGUCHI TOSHIAKI
IPC分类号： B22D11/108 , B22D11/00 , B22D11/11
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method for molten steel capable of performing stable operation by preventing the defect due to hydrogen in the molten steel and heat extraction defect.
SOLUTION: In the continuous casting method for the molten steel, mold powder having hydrogen absorbency is added to the molten steel 5 in a casting mold such that the hydrogen included in the molten steel 5 in the casting mold 1 is absorbed into the mold powder and therefore, the heat extraction defect due to the hydrogen can be prevented and the operation can be stabilized. Also, the mold powder is so prepared that 6 to 20wt% alumina is contained therein and the basicity of the mold powder is within a range from 1.3 to 2.0 and, thereby the hydrogen absorbency can be improved, the heat extraction defect due to the hydrogen can be surely prevented and the operation can be stabilized.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够通过防止钢水中的氢缺陷和热提取缺陷来进行稳定操作的钢水的连续铸造方法。解决方案：在用于钢水的连续铸造方法中，在铸模中向钢水5中加入具有吸氢性的模具粉末，使得铸模1中包含的钢水5中的氢被吸收到因此，可以防止由于氢引起的热提取缺陷，能够使操作稳定。此外，如此制备模具粉末，其中含有6至20重量％的氧化铝，并且模具粉末的碱度在1.3至2.0的范围内，从而可以提高吸氢性，由于氢气引起的热提取缺陷可以肯定地防止并且操作能够稳定。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005200234A Method for treating steelmaking slag 有权
标题翻译：处理钢丝滑块的方法
公开(公告)号：JP2005200234A
公开(公告)日：2005-07-28
申请号：JP2004005516
申请日：2004-01-13
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MUKAWA SUSUMU , UEJIMA YOSHIYUKI , TAZAKI TOMOAKI , TSUTSUMI NAOTO
IPC分类号： C04B5/06 , C04B18/14 , C04B20/02 , C21C1/02 , C21C5/28 , F27D15/00
CPC分类号： C04B20/023 , C04B18/142 , Y02W30/94
摘要： PROBLEM TO BE SOLVED: To treat steelmaking slag in high productivity with reduced CO 2 emission to form a treated product reduced in expansion, weathering, and alkali elution. SOLUTION: The method for treating steelmaking slag comprises carbonating steelmaking slag with mechanical agitation or comprises carbonating steelmaking slag in the presence of water to stabilize the CaO in the slag as CaCO 3 . Thus, it is possible to reduce a free lime concentration to 1% or lower within a heretofore unattainably short time. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：以减少CO 2 排放的高生产率处理炼钢炉渣，形成经膨胀，风化和碱洗涤减少的处理产物。解决方案：炼钢渣的处理方法包括碳酸化炼钢渣，机械搅拌，或在水存在下包含碳酸化炼钢渣，以稳定炉渣中的CaO，如CaCO 3 SB 3。因此，可以在迄今无法短暂的时间内将游离石灰浓度降低至1％以下。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2005177848A Center defect reducing method of continuously cast steel slab 有权
标题翻译：连续铸钢板的中心缺陷减少方法
公开(公告)号：JP2005177848A
公开(公告)日：2005-07-07
申请号：JP2003425262
申请日：2003-12-22
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： UEJIMA YOSHIYUKI , KONDO KATSUMI , WATANABE YU , MATSUBA SHIGEKAZU , YASUI YOJI , TAKAHASHI YASUTETSU
IPC分类号： B22D11/108 , B22D11/11 , B22D11/115
摘要： PROBLEM TO BE SOLVED: To provide a center defect reducing method of a continuously cast steel slab at a low cost without performing low-temperature casting with inferior operational consistency or high-temperature soaking diffusion of the slab at excessive cost under the low rolling reduction at the end of solidification with high equipment load.
SOLUTION: In the continuous casting of Al killed steel, fine center equiaxed crystal is formed by containing dissolved REM concentration of ≥0.5 ppm and
摘要翻译：要解决的问题：为了以低成本提供连续铸钢坯的中心缺陷还原方法，而不进行低成本的低温铸造，具有较差的操作稠度或板坯的高温浸泡扩散，成本低廉凝固结束时的设备负荷高。解决方案：在连铸Al中的钢中，通过在中间包中含有≥0.5ppm的溶解的REM浓度和<60ppm的钢水形成细中心等轴晶体，并且偏析粒度或中心孔径，发电量减少。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JPH11277199A Method for continuously casting steel 失效
标题翻译：连续铸钢的方法
公开(公告)号：JPH11277199A
公开(公告)日：1999-10-12
申请号：JP7949498
申请日：1998-03-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKASE KENJI , UEJIMA YOSHIYUKI
IPC分类号： B22D11/10 , B22D11/108 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a condition to use powder for preventing the flow-out of molten steel from the top of a cast slab caused by CO
2 at the time of drawing out after completing the casting in a continuous caster to operate under a condition, in which metallurgical length from a molten steel meniscus in a mold to fully solidified position of the cast slab is ≤15 m.
SOLUTION: This casting method restricts the supply of SiO
2 into molten steel side from a powder fused layer by using powder having ≤20% liquid phase ratio at 1200°C. In this way, amount of CO
2 gas generated by a reaction between C in the molten steel and SiO
2 in the powder, is restricted, and simultaneously, the molten steel drawing rate can largely be secured, so that flow-out of the molten steel from the top of the cast slab can be markedly reduced.
COPYRIGHT: (C)1999,JPO
摘要翻译：要解决的问题：提供一种使用粉末以防止在连铸机完成铸造之后从CO 2引起的铸造钢板顶部流出钢水以在条件下运行的条件，其中铸模中的钢水弯液面的冶金长度至铸坯的完全固化位置为<=15μm。解决方案：该铸造方法通过使用在120℃下具有<= 20％液相比的粉末，限制了从熔融层向熔融钢侧供应SiO 2。以这种方式，通过钢水中的C与粉末中的SiO 2之间的反应产生的CO 2气体的量受到限制，并且同时可以大大地确保钢水的拉伸速度，从而使钢水流出铸造板的顶部可以显着减小。

8. 发明专利

JP2008212968A Structure of sealing part of nozzle joint part in continuous steel casting apparatus 有权
标题翻译：连续铸钢件喷嘴接头部分密封结构
公开(公告)号：JP2008212968A
公开(公告)日：2008-09-18
申请号：JP2007052621
申请日：2007-03-02
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： OTA MITSUHIKO , UEJIMA YOSHIYUKI , UCHIYAMA NORIHIKO , MIYAHARA MASATOSHI , SUEMATSU YOSHIAKI
IPC分类号： B22D11/10
摘要： PROBLEM TO BE SOLVED: To provide a sealing structure of a nozzle joint part in a continuous steel casting apparatus for preventing the sucking from the joint part between refractory nozzles. SOLUTION: As for the sealing structure of the nozzle joint part in the continuous steel casting apparatus, a hollow disk-like packing material made of a monolithic refractory or flame retardant material is used, two of large and small packing materials are arranged at the inner part and the outer part in the diameter direction on the same flat surface, and molten metal is held in a space formed in the interval with the nozzle joint part. Also, the width in the diameter direction of the metal is defined as ≥3 mm and the width in the diameter of the packing materials is defined as ≥10 mm. Alternatively, the thickness of the metal at the room temperature is defined as ≥0.8 times to COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于防止从耐火喷嘴之间的接合部抽吸的连续铸钢装置中的喷嘴接合部的密封结构。解决方案：对于连续铸钢装置中的喷嘴接头部分的密封结构，使用由整体式耐火材料或阻燃材料制成的中空圆盘状填充材料，使用大而小的包装材料在相同的平坦表面上的直径方向上的内部部分和外部部分，并且熔融金属被保持在与喷嘴接合部分间隔形成的空间中。此外，金属的直径方向的宽度被定义为≥3mm，并且包装材料的直径的宽度被定义为≥10mm。或者，室温下金属的厚度定义为室温下包装材料厚度的≥0.8倍至<1.3倍。或者，将金属的直径方向的宽度定义为≥3mm，将包装材料的直径方向的宽度定义为≥10mm，将室温下的金属的厚度定义为≥0.8倍到室温下包装材料厚度的1.3倍。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007229737A Vertical type continuous casting method of large cross-section cast slab for thick steel plate 有权
标题翻译：大型横截面立式铸造连续铸造方法
公开(公告)号：JP2007229737A
公开(公告)日：2007-09-13
申请号：JP2006052163
申请日：2006-02-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIZOGUCHI TOSHIAKI , UEJIMA YOSHIYUKI , KONDO KATSUMI , HAYAKAWA MASANOBU , YASUI YOJI
IPC分类号： B22D11/108 , B22D11/00 , B22D11/041 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a vertical type continuous casting method of a large section cast slab having ≥380 mm thickness of the cast slab while restraining the surface crack. SOLUTION: In a method for continuously casting the large cross-section cast slab for thick steel plate having ≥380 mm thickness of the cast slab at ≤0.2 m/min casting speed with the vertical continuous caster, as mold powder for covering the molten steel surface in a mold, the mold powder satisfying a formula for coefficient of viscosity η at 1,300°C, η≥0.03×D-6 (unit of η is poise and unit of D is mm), is used. In this way, the variation of the molten steel surface is restrained and the flow mark (lipple mark) depth on the molten steel surface is set to ≤1.5 mm and γ grain boundary crack generated at the ravine part of the flow mark can be prevented. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种在抑制表面裂纹的同时铸造板坯厚度≥380mm的大型铸造板坯的垂直型连铸方法。＆lt; P＆gt;解决方案：在垂直连铸机的铸造速度以≥0.2m/ min厚度铸造厚度≥380mm的厚钢板连续铸造大型横截面铸造板的方法中，作为覆盖用模具粉末在模具中的钢水表面，使用在1,300℃，η≥0.03×D-6（η的单位为泊兹，D为单位为mm）的粘度系数η的模具粉末。以这种方式，可以抑制钢水表面的变化，使钢水面上的流痕（唇标）深度设定为≤1.5mm，并且可以防止在流痕的沟槽部处产生γ晶界裂纹。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2007070660A High strength thin steel sheet having excellent formability, and method for producing the same 有权
标题翻译：具有良好可塑性的高强度钢板及其制造方法
公开(公告)号：JP2007070660A
公开(公告)日：2007-03-22
申请号：JP2005256602
申请日：2005-09-05
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUJITA NOBUHIRO , OKAMOTO TSUTOMU , MIZOGUCHI TOSHIAKI , TANIGUCHI YUICHI , UEJIMA YOSHIYUKI , GOTO KOICHI , FUKUDA SHUJI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a TRIP type high strength thin steel sheet having a structure more uniform than that of the conventional one, and having excellent formability, and to provide a method for producing the same. SOLUTION: The high strength thin steel sheet having excellent formability has a steel composition comprising, by mass, 0.05 to 0.25% C, ≤2.0% Si, 0.8 to 3% Mn, 0.0010 to 0.1% P, 0.0010 to 0.05% S, 0.0010 to 0.010% N and 0.01 to 2.0% Al, and the balance iron with inevitable impurities, and in which Mn micro-segregation in the range of 1/8t to 3/8t of the sheet thickness t lies in the range satisfying formula (1), and its structure comprises retained austenite having a mean carbon content of ≥0.9% by ≥3%: 0.10≥σ/Mn (1); wherein, Mn denotes its additional amount, and σ denotes the standard deviation in Mn micro-segregation measurement. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有比常规结构更均匀的结构的TRIP型高强度薄钢板，并且具有优异的成形性，并提供其制造方法。解决方案：具有优异成型性的高强度薄钢板具有质量分数为0.05〜0.25％的Si，≤2.0％的Si，0.8〜3％的Mn，0.0010〜0.1％的P，0.0010〜0.05％的钢， S为0.0010〜0.010％，Al为0.01〜2.0％，剩余铁为不可避免的杂质，其中，在板厚t的1 / 8t〜3 / 8t的范围内的Mn微分散在满足式（1），其结构包括平均碳含量≥0.9％≥3％的残余奥氏体：0.10≥σ/ Mn（1）; 其中，Mn表示其附加量，σ表示Mn微分离测定中的标准偏差。版权所有（C）2007，JPO＆INPIT

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