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21. 发明专利

JP2014070973A Steel plate inspection apparatus and steel plate inspection method 有权
标题翻译：钢板检查装置和钢板检查方法
公开(公告)号：JP2014070973A
公开(公告)日：2014-04-21
申请号：JP2012216380
申请日：2012-09-28
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ITO TOMOHIKO , YOTSUTSUJI JUNICHI , TAKAGI SHIGEHIRO , YAMAGUCHI HIROSHI , HANAZAWA KAZUHIRO , KOGA YASUNARI , SAIKI JUNICHI
IPC分类号： G01N27/72 , C21D8/12 , G01R33/032 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To perform visualized inspection of a magnetic domain structure of a steel plate continuously without stopping a manufacturing line.SOLUTION: A steel plate inspection apparatus 1 according to the present invention comprises: a central shaft 3 bridged in a plate width direction of a steel plate 2 in a manufacturing line; a roll 4 rotating around the central shaft 3 while pressing the steel plate 2 so that a distance between the steel plate 2 and the central shaft 3 is kept constant; a magnetooptical element 5 that is placed close to the steel plate 2 and can detect a magnetic domain structure of the steel plate 2 as optical characteristics; a fixture 6 that is fixed on the central shaft 3 and makes the a magnetooptical element 5 keep a constant distance from the central shaft 3; a light source for irradiating the magnetooptical element 5 with linear polarization; and a detector 7 for detecting the linear polarization whose polarization plane is rotated in accordance with the magnetic domain structure of the steel plate 2 that has been transcribed to the magnetooptical element 5.
摘要翻译：要解决的问题：连续地进行钢板的磁畴结构的可视化检查而不停止生产线。解决方案：根据本发明的钢板检查装置1包括：在板宽度方向上桥接的中心轴3 的钢板2; 围绕中心轴3旋转的辊4，同时按压钢板2，使得钢板2和中心轴3之间的距离保持恒定; 放置在靠近钢板2的磁光元件5，可以检测钢板2的磁畴结构作为光学特性; 固定在中心轴3上并使磁光元件5与中心轴3保持恒定距离的固定装置6; 用于以线偏振照射磁光元件5的光源; 以及检测器7，用于检测其偏振面根据已被转录到磁光元件5的钢板2的磁畴结构而旋转的线偏振。

22. 发明专利

JP2013151738A High strength thin steel plate excellent in dent resistance and method for manufacturing the same 有权
标题翻译：耐高温强度优良的钢板及其制造方法
公开(公告)号：JP2013151738A
公开(公告)日：2013-08-08
申请号：JP2012269076
申请日：2012-12-10
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKAGI SHIGEHIRO , HANAZAWA KAZUHIRO , FUJITA KOICHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high strength thin steel plate excellent in dent resistance and a method for manufacturing the steel plate.SOLUTION: A steel material has composition containing, by mass%, 0.0005-0.0250% C, 1.0% or less Si, 0.1-2.5% Mn, 0.10% or less P, 0.05% or less S, 0.05% or less Al, less than 0.015% N, and the balance being Fe and unavoidable impurities. The steel material is subjected to: heating to a temperature of 1100° C or more; rough rolling and finish rolling in which the finish rolling temperature is 850° C or more; a hot rolling process of winding up the steel material at a winding temperature of 650° C or less; a cold rolling process of performing cold rolling at a rolling rate of 70-85%; and a treating process of holding a rolled steel in an atmosphere containing 0.03-50% ammonia by volume percentage with the balance being an inert gas for a predetermined holding time at an annealing temperature of 550° C or more but not more than TN temperature defined in the formula (1): TN(°C)=723-10.7x[Mn], wherein [Mn] is a content amount (mass%) of the Mn. The thin steel plate has yield strength YP of 400 MPa or more in the rolling direction and TS of 1.25YP or less.
摘要翻译：要解决的问题：提供耐凹陷性优异的高强度薄钢板和钢板的制造方法。解决方案：钢材具有以质量％计含有0.0005-0.0250％C，1.0％以下的Si ，0.1-2.5％Mn，0.10％以下P，0.05％以下S，0.05％以下Al，小于0.015％N，余量为Fe和不可避免的杂质。钢材经受：加热到1100℃以上的温度; 精轧温度为850℃以上的粗轧和精轧; 在650℃以下的卷绕温度下卷绕钢材的热轧工序; 以70-85％的轧制速度进行冷轧的冷轧方法; 以及在550℃以上且不超过TN温度的退火温度下，将含有0.03〜50％氨体积的气体的余量作为惰性气体保持规定的保持时间的处理工序在式（1）中：TN（℃）= 723-10.7×[Mn]，其中[Mn]是Mn的含量（质量％）。薄钢板的轧制方向的屈服强度YP为400MPa以上，TS为1.25YP以下。

23. 发明专利

JP2013139629A Method for producing low iron loss grain-oriented magnetic steel sheet 有权
标题翻译：生产低铁损失谷粒磁性钢板的方法
公开(公告)号：JP2013139629A
公开(公告)日：2013-07-18
申请号：JP2012266887
申请日：2012-12-06
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKENAKA MASANORI , TAKASHITA TAKUYA , HANAZAWA KAZUHIRO , TAKAMIYA TOSHITO
IPC分类号： C21D8/12 , B21B1/22 , B21B3/02 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a grain-oriented magnetic steel sheet which prevents deterioration in integrating degree in Goss orientation of a secondary recrystallized grain in an Al-containing grain-oriented magnetic steel sheet to produce a grain-oriented magnetic steel sheet excellent in magnetic property.SOLUTION: The method for producing a grain-oriented magnetic steel sheet containing 0.01-0.05 mass% sol. Al, includes: a hot-rolled sheet annealing where a steel slab is subjected to annealing at 800°C or higher, and then cooled at a cooling rate of 45°C/s or more while the steel slab has a temperature between 750°C and a cooling end temperature of 200-300°C; a first cold rolling where the steel slab is subjected to cold rolling more than 1 pass to achieve a total reduction of 30-50%, and then to a final pass using a roll with 200 mmφ or more with an initial biting temperature of 100°C or lower; and a second cold rolling after an intermediate annealing, where the steel slab is subjected to cold rolling more than 2 passes to achieve a total reduction of 80-95% while being subjected to an interpass aging at 200-300°C at least during 1 pass.
摘要翻译：要解决的问题：提供一种用于制造晶粒取向电磁钢板的方法，其防止含Al取向电磁钢板中的二次再结晶晶粒的Goss取向积分度的劣化，以产生晶粒取向磁性磁性优异的钢板。解决方案：含有0.01-0.05质量％溶胶的晶粒取向电磁钢板的制造方法。 Al包括：对钢坯进行800℃以上退火，然后以45℃/ s以上的冷却速度进行冷却的热轧板退火，而钢坯的温度为750℃以下 C，冷却终止温度为200-300℃; 第一次冷轧，其中钢坯经受超过1次的冷轧，总共减少30-50％，然后使用200mm＆amp; 或更高，初始咬合温度为100℃或更低; 在中间退火之后进行第二次冷轧，其中钢坯经受2次以上的冷轧，总共减少80-95％，同时在200-300℃下进行至少1次的中间退火通过。

24. 发明专利

JP2012007196A Cold-rolled thin steel sheet having excellent shape fixability, and method for producing the same 有权
标题翻译：具有优异形状固化性的冷轧薄钢板及其制造方法
公开(公告)号：JP2012007196A
公开(公告)日：2012-01-12
申请号：JP2010142249
申请日：2010-06-23
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： KIZU TARO , YASUHARA HIDEKO , FUJITA KOICHIRO , TAKAGI SHIGEHIRO , HANAZAWA KAZUHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/32
CPC分类号： C22C38/02 , C21D8/0436 , C21D8/0442 , C21D8/0473 , C21D9/48 , C21D2211/005 , C22C38/001 , C22C38/04 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled thin steel sheet having a proportional limit of 150 MPa or less and a method for producing the cold-rolled thin steel sheet.SOLUTION: A cold-rolled sheet has a composition comprising, in mass%, 0.10% or less of C, 0.05% or less of Si, 0.1-1.0% of Mn, 0.05% or less of P, 0.02% or less of S, 0.02-0.10% of Al, less than 0.005% of N and the balance being Fe and inevitable impurities. The cold-rolled sheet is subjected to an annealing treatment which comprises heating at an annealing temperature of 730-850°C for 30 seconds or longer and cooling to a temperature equal to or lower than 600°C at an average cooling rate of 5°C/s or more, thereby producing a cold-rolled annealed sheet having a structure mainly composed of a ferrite phase having an average crystal grain diameter d of 5-30 μm. The cold-rolled annealed sheet is subjected to a temper rolling treatment using a rolling roll having a surface roughness Ra of 2.0 μm or less so that a temper rolling elongation percentage is in a range from d/20% to d/5% to correspond to the average crystal grain size d (μm) of the thin cold-rolled annealed sheet.
摘要翻译：解决的问题：提供一种比例范围为150MPa以下的冷轧薄钢板以及冷轧薄钢板的制造方法。＆lt;解决方案＆gt;冷轧板具有以质量％计含有C：0.10％以下，Si：0.05％以下，Mn：0.1〜1.0％，P：0.05％以下，0.02％以下或少量的S，0.02-0.10％的Al，小于0.005％的N，余量是Fe和不可避免的杂质。对冷轧板进行退火处理，其包括在730-850℃的退火温度下加热30秒以上，并以5°的平均冷却速度冷却至600℃以下的温度以上，由此制造出主要由平均结晶粒径d为5-30μm的铁素体相组成的冷轧退火板。使用表面粗糙度Ra为2.0μm以下的轧制辊对冷轧退火板进行回火轧制处理，使得回火延伸率在d / 20％〜d / 5％的范围内，以对应于相对于薄型冷轧退火板的平均晶粒尺寸d（μm）。版权所有（C）2012，JPO＆INPIT

25. 发明专利

JP2011102434A Method for manufacturing high-strength hot-rolled steel sheet 有权
标题翻译：制造高强度热轧钢板的方法
公开(公告)号：JP2011102434A
公开(公告)日：2011-05-26
申请号：JP2010279711
申请日：2010-12-15
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAJI YUUKI , KANEKO SHINJIRO , HANAZAWA KAZUHIRO , OKUDA KANEHARU , URABE TOSHIAKI
IPC分类号： C21D9/46 , B21B3/00 , C22C38/00 , C22C38/12 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-rolled steel sheet having ≥980 MPa tensile strength and excellent balance to the strength-ductility and small softening to a welded heat affecting zone. SOLUTION: A steel slab having the composition composed by mass% of 0.10-0.25% C, ≤1.5% Si, 1.0-3.0% Mn, ≤0.10% P, ≤0.005% S, 0.01-0.5% Al, ≤0.010% N and 0.10-1.0% V and satisfying (10Mn+V)/C≥50 and the balance Fe with inevitable impurities, is made to be a sheet bar by rougher-rolling after heating to ≥1,000°C, and successively, after applying a finish-rolling under condition of the temperature of ≥800°C on the outlet side of the finish-rolling, this sheet bar is cooled to the temperature Ta°C satisfying formula (1): 11,000-3,000[%V]≤24×Ta≤15,000-1,000[%V] (wherein, [%V]: V content (mass%)) within 3 seconds after the finish-rolling is complete at an average cooling rate of ≥ 20°C/s in the temperature range of 400 to 600°C, and wound. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有≥980MPa拉伸强度的高强度热轧钢板，并且对焊接热影响区域的强度延展性和软化性能优异的平衡。解决方案：具有质量％为0.10-0.25％C，≤1.5％Si，1.0-3.0％Mn，≤0.10％P，≤0.005％S，0.01-0.5％Al，≤ 0.010％N和0.10-1.0％V，满足（10Mn + V）/C≥50，余量为Fe的不可避免的杂质，在加热至≥1,000℃后通过粗轧而成为板坯，在精轧出口侧的温度≥800℃的条件下进行精轧后，将该钢板冷却至满足公式（1）：11,000-3,000 [％V]的温度Ta℃，在平均冷却速度≥20℃/秒以上的精轧完成后3秒内，≤24×Ta≤15,000〜1,000 [％V]（其中，[％V]：V含量（质量％））温度范围为400〜600℃，并缠绕。版权所有（C）2011，JPO＆INPIT

26. 发明专利

JP2010270383A Hot-rolled steel plate superior in formability and method for manufacturing the same 有权
标题翻译：热轧钢板超级能力及其制造方法
公开(公告)号：JP2010270383A
公开(公告)日：2010-12-02
申请号：JP2009125465
申请日：2009-05-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： FUJITA KOICHIRO , HANAZAWA KAZUHIRO , TAKADA YASUYUKI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/14
CPC分类号： C21D8/0226 , C21D9/46 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a hot-rolled steel plate which has aging resistance, softness and high ductility, and also has improved | Δr | without excessively coarsening the grains, and to provide a method for manufacturing the same.
SOLUTION: The hot-rolled steel plate includes, by mass%, 0.03-0.07% C, 0.1% or less Si, 0.05-0.5% Mn, 0.03% or less P, 0.03% or less S, 0.02-0.1% Sol. Al, 0.005% or less N, less than 0.005% Nb+Ti, 0.0003-0.0020% B and the balance Fe with unavoidable impurities; has an average grain size of 12-25 μm; and satisfies | Δr |≤0.25 and AI≤20 MPa.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有耐老化性，柔软性和高延展性的热轧钢板，并且还可以改善¾Δr¾而不会使晶粒过度粗化，并提供其制造方法。解决方案：热轧钢板以质量％计含有0.03-0.07％C，0.1％以下Si，0.05〜0.5％Mn，0.03％以下P，0.03％以下S，0.02〜0.1 ％Sol。 Al，0.005％以下N，小于0.005％Nb + Ti，0.0003〜0.0020％B，余量为Fe，不可避免的杂质; 平均粒径12-25μm; 并且满足¾Δr¾≤0.25和AI≤20MPa。版权所有（C）2011，JPO＆INPIT

27. 发明专利

JP2010229545A Cold-rolled steel sheet having excellent bendability, method for producing the same and member using the same 有权
标题翻译：具有良好的弯曲性的冷轧钢板，使用该钢板的成型体及其制造方法
公开(公告)号：JP2010229545A
公开(公告)日：2010-10-14
申请号：JP2009290244
申请日：2009-12-22
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： FUJITA KOICHIRO , HANAZAWA KAZUHIRO , YASUHARA HIDEKO
IPC分类号： C22C38/00 , B21B3/00 , B21D5/01 , C21D9/46 , C22C38/06 , C22C38/14
CPC分类号： C21D9/46 , C21D8/0236 , C21D8/0426 , C21D8/0436 , C21D9/48 , C21D2211/003 , C21D2211/005 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet which is inexpensive and has such excellent bendability that even a sheet with a thin gauge can be bent at severe 90 degrees with a punch having a tip curvature of 2R or less; a method for producing the same; and a member using the same. SOLUTION: The cold-rolled steel sheet excellent in bendability has a component composition comprising, by mass%, 0.025% or less C, 0.1% or less Si, 0.05-0.5% Mn, 0.03% or less P, 0.02% or less S, 0.01-0.1% sol. Al and the balance Fe with unavoidable impurities; a microstructure which is a ferrite rolling structure; a tensile strength TS of 390 MPa or more; a sheet thickness of 0.4 mm or more; and an ultimate deformability of 1.3 or more in the direction of sheet thickness. Here, the ultimate deformability in the direction of sheet thickness means a natural logarithm Ln(t 0 /t 1 ) of the ratio of the steel sheet thickness t 0 before a tensile test to the steel thickness t 1 at the fracture surface of the steel sheet after the test when the steel sheet is subjected to the tensile test. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供廉价且具有这样优异的弯曲性的冷轧钢板，即使具有薄的规格的板也可以用尖端曲率为2R或更小的冲头在严格的90度下弯曲 ; 其制造方法; 和使用它的成员。解决方案：弯曲性优异的冷轧钢板具有以质量％计含有C：0.025％以下的Si，0.1％以下的Si，0.05〜0.5％的Mn，0.03％以下的P，0.02％或更小S，0.01-0.1％溶胶。 Al和余量Fe与不可避免的杂质; 一种铁素体滚动结构的微结构; 拉伸强度TS为390MPa以上; 板厚0.4mm以上; 并且在板厚方向上的极限可变形性为1.3以上。这里，板厚方向的极限变形性意味着钢板厚度t 0的比例的自然对数Ln（t 0 / t 1 ）在对钢板进行拉伸试验后的钢板断裂面的钢板厚度t SB <1 / SB>进行拉伸试验之前，进行拉伸试验。版权所有（C）2011，JPO＆INPIT

28. 发明专利

JP2014196543A 方向性電磁鋼板の製造方法有权
标题翻译：颗粒导向硅钢板的生产方法
公开(公告)号：JP2014196543A
公开(公告)日：2014-10-16
申请号：JP2013073264
申请日：2013-03-29
申请人： Jfeスチール株式会社 , Jfe Steel Corp
发明人： TAKAGI SHIGEHIRO , HANAZAWA KAZUHIRO
IPC分类号： C21D8/12 , C22C38/00 , H01F1/16
摘要：【課題】加工室内での堆積物を主因とするチャージアップが発生した場合にあっても、方向性電磁鋼板に電子ビーム照射処理を適正に行うための方途について提案する。【解決手段】低圧雰囲気に保持される加工室において、方向性電磁鋼板の表面に電子ビームを照射して磁区細分化処理を施すに当たり、前記電子ビームの照射におけるアーキングの発生回数の増加に応じて、前記加工室内のビーム通路域の圧力を高める。【選択図】図1
摘要翻译：要解决的问题：为了提供即使产生使处理室中的沉积成为主要原因的电荷的方法，也适当地进行对晶粒取向硅钢板的电子束照射处理。解决方案：在处理保持在低压气氛中，当用电子束照射晶粒取向硅钢板的表面时，进行磁畴破碎处理，根据增量来提高处理室中的光束通过区域的压力在电子束的照射中发生电弧的频率。

29. 发明专利

JP2014070975A Apparatus and method for detecting magnetic domain discontinuous portion 有权
标题翻译：用于检测磁畴不连续部分的装置和方法
公开(公告)号：JP2014070975A
公开(公告)日：2014-04-21
申请号：JP2012216382
申请日：2012-09-28
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ITO TOMOHIKO , YOTSUTSUJI JUNICHI , TAKAGI SHIGEHIRO , YAMAGUCHI HIROSHI , HANAZAWA KAZUHIRO , KOGA YASUNARI
IPC分类号： G01N27/72 , C21D8/12 , G01R33/02 , G01R33/032
摘要： PROBLEM TO BE SOLVED: To make a contour of a magnetic domain discontinuous portion, formed by magnetic domain segmentalization processing, clear.SOLUTION: An apparatus 1 for detecting a magnetic domain discontinuous portion according to the present invention comprises: a magnetooptical element 2 that is in contact with or close to a surface of a steel plate S and that converts a magnetic structure of the steel plate S into optical characteristics by transcription of the magnetic structure; a magnetizer 3 that is disposed on a side opposite to the magnetooptical element 2 in relation to the steel plate S and that magnetizes the steel plate S; a light source 5 for irradiating the magnetooptical element 2 with linear polarization; and a detector 10 for detecting linear polarization, with which the magnetooptical element 2 has been irradiated, whose polarization plane is rotated by the magnetic domain structure of the steel plate S that has been transcribed to the magnetooptical element 2.
摘要翻译：要解决的问题：通过磁畴分段处理形成磁畴不连续部分的轮廓是清楚的。解决方案：根据本发明的用于检测磁畴不连续部分的装置1包括：磁光元件2，其是与钢板S的表面接触或接近，并且通过磁性结构的转印将钢板S的磁性结构转换成光学特性; 磁化器3，其相对于钢板S设置在与磁光元件2相反的一侧，并且使钢板S磁化; 用于以线偏振照射磁光元件2的光源5; 以及检测器10，用于检测已经照射光磁元件2的线偏振，其偏振面被转印到磁光元件2的钢板S的磁畴结构旋转。

30. 发明专利

JP2014070974A Apparatus and method for detecting abnormality in electron gun 有权
标题翻译：用于检测电子枪不正常的装置和方法
公开(公告)号：JP2014070974A
公开(公告)日：2014-04-21
申请号：JP2012216381
申请日：2012-09-28
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ITO TOMOHIKO , YOTSUTSUJI JUNICHI , TAKAGI SHIGEHIRO , YAMAGUCHI HIROSHI , HANAZAWA KAZUHIRO , KOGA YASUNARI
IPC分类号： G01N27/72 , G01R33/032
CPC分类号： G01N21/21 , G01N2201/062 , G01R33/032 , H01J29/48
摘要： PROBLEM TO BE SOLVED: To detect abnormality in an electron gun by inspection at inspection points that are fewer than the number of installed electron guns of a magnetic domain segmentalizing apparatus.SOLUTION: An apparatus 1 for detecting abnormality in an electron gun according to the present invention detects abnormality in electron guns of a magnetic domain segmentalizing apparatus 2, for an electromagnetic steel plate, provided with a plurality of electron guns 3, 3, 3, 3. The apparatus 1 comprises: a magnetooptical element that contacts with and departs from inspection regions R, R, Rset so as to include a boundary of a magnetic domain discontinuous portion L generated by irradiation of the plurality of electron guns 3, 3, 3, 3to a surface of the electromagnetic steel plate with electron beams and that can detect a magnetic domain structure of a steel plate S in the inspection regions R, R, Ras optical characteristics; a light source for irradiating the magnetooptical element with linear polarization; and a detector for detecting polarization rotated by the magnetic domain structure of the steel plate S that has been transcribed to the magnetooptical element.
摘要翻译：要解决的问题：通过在小于磁畴分段装置的电子枪数量的检查点进行检查来检测电子枪的异常。解决方案：根据本发明的用于检测电子枪异常的装置1 本发明检测到磁畴分段装置2的电子枪的异常，对于具有多个电子枪3,3,3,3的电磁钢板。装置1包括：接触和不检查的磁光元件区域R，R，Rset，以便包括通过用电子束照射多个电子枪3,3,3而产生的磁畴不连续部分L的边界，并且可以检测磁畴结构的钢板S在检测区R，R，Ras的光学特性; 用于以线偏振照射磁光元件的光源; 以及用于检测由已经转录到磁光元件的钢板S的磁畴结构旋转的偏振的检测器。

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