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21. 发明专利

JP2004244704A HIGH STRENGTH Al BASED PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AFTER COATING, HIGH STRENGTH AUTOMOBILE COMPONENT, AND PRODUCTION METHOD THEREFOR 有权
公开(公告)号：JP2004244704A
公开(公告)日：2004-09-02
申请号：JP2003037804
申请日：2003-02-17
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MAKI JUN , SUEHIRO MASAYOSHI , MIYAKOSHI TOSHIHIRO
IPC分类号： C23C2/12 , C22C21/00 , C22C38/00 , C22C38/60 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a high strength Al based plated steel sheet which has excellent corrosion resistance after coating, and is used for producing a component requiring high strength such as an automobile reinforcing member, and to provide an automobile component produced thereby.
SOLUTION: In the high strength Al based plated steel sheet having excellent corrosion resistance after coating, the surface of the steel sheet is provided with an Fe-Al based coating, and the concentration of Al in the surface phase of the Fe-Al based coating is ≥40 mass%. The surface phase can comprise ≤5% Si as well. Preferably, 0.05 to 0.7% C is contained as the steel component. The steel sheet can contribute to the production of an automobile component having high strength and excellent corrosion resistance after coating.
COPYRIGHT: (C)2004,JPO&NCIPI

22. 发明专利

JP2003193187A HIGH STRENGTH ALUMINUM BASED PLATED STEEL SHEET HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE IN WORKED PART AND HIGH STRENGTH AUTOMOTIVE PARTS 审中-公开
公开(公告)号：JP2003193187A
公开(公告)日：2003-07-09
申请号：JP2001390842
申请日：2001-12-25
申请人： NIPPON STEEL CORP
发明人： MAKI JUN , SUEHIRO MASAYOSHI , KUSUMI KAZUHISA , MIYAKOSHI TOSHIHIRO
IPC分类号： C23C2/12 , C22C38/00 , C23C2/14 , C23C2/28 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a high strength Al based plated steel sheet which has excellent workability, and corrosion resistance in a worked part for producing parts requiring high strength such as an under carriage member of automobile, and to provide automotive parts produced thereby. SOLUTION: In the high strength Al based plated steel sheet having excellent workability, and corrosion resistance in a worked part, the surface is provided with an Fe-Al based coating, and the concentration of Al in the Fe-Al based coating is ≤35 mass%. As the steel component, 0.05 to 0.7% C is desirably contained, and, the Fe-Al based coating can contain ≤15% Si. COPYRIGHT: (C)2003,JPO

23. 发明专利

JP2003041343A Aluminized steel sheet for high-strength automotive member and member for automobile with the use of the same 有权
标题翻译：用于高强度汽车零部件的汽车用钢板及其使用的汽车零部件
公开(公告)号：JP2003041343A
公开(公告)日：2003-02-13
申请号：JP2001228431
申请日：2001-07-27
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MAKI JUN , SUEHIRO MASAYOSHI , FUDA MASAHIRO , MIYAKOSHI TOSHIHIRO
IPC分类号： C23C2/12 , C22C38/00 , C22C38/28 , C23C2/28 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide an aluminized steel sheet for a high-strength automotive member and a member for an automobile manufactured thereof.
SOLUTION: The aluminized steel sheet for the high-strength automotive member is characterized by having an intermetallic compound layer containing Fe and Al as main components on the surface of the steel sheet, then a ferrite layer of 2 μm or thicker but 1/10 of steel sheet thickness or thinner, in its inner side, and further a steel base material mainly containing martensite, in the inner side. The intermetallic compound can include Si therein. The ferrite phase has hardness preferably of 200 or less. Thereby, the aluminized steel sheet can be machined into the high-strength automotive member, without flaking of a plated film.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种高强度汽车部件用镀铝钢板及其制造用汽车部件。解决方案：用于高强度汽车部件的镀铝钢板的特征在于，在钢板表面上具有含有Fe和Al作为主要成分的金属间化合物层，然后将2μm或更厚但1/10的铁素体层内侧为钢板厚度或薄板，还有内侧为主要含有马氏体的钢基材。金属间化合物可以包括Si。铁素体相的硬度优选为200以下。因此，可以将镀铝钢板加工成高强度汽车部件，而不会剥离镀膜。

24. 发明专利

JP2003034844A Steel sheet plated with aluminum or aluminum - zinc suitable for high-temperature forming, acquiring high strength thereafter, and manufacturing method therefor 有权
标题翻译：镀有铝或铝的钢板 - 适用于高温成型的高锌合金，其制造方法
公开(公告)号：JP2003034844A
公开(公告)日：2003-02-07
申请号：JP2001181833
申请日：2001-06-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： SUEHIRO MASAYOSHI , MAKI JUN , FUDA MASAHIRO , MIYAKOSHI TOSHIHIRO , TAKADA YOSHIHISA , EGUCHI HARUHIKO
IPC分类号： C23C2/06 , C21D9/46 , C22C38/00 , C22C38/16 , C23C2/12 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide an aluminum plated steel sheet or an aluminum - zinc plated steel sheet suitable for high-temperature forming, which acquires high strength after the high-temperature forming.
SOLUTION: The aluminum plated steel sheet or the aluminum - zinc plated steel sheet suitable for the high-temperature forming, which acquires the high strength after the high-temperature forming, is characterized by including, by mass%, 0.15-0.55% C, ≤0.5% Si, 1.5-3.0% Mn, ≤0.04% S, ≤0.1% P, 0.01-0.10% Al, preferably an appropriate amount of N, B and Ti, and further one or more of ≤1.0% Ni, ≤0.5% Cu, and ≤0.2% Sn, so as to satisfy (Ni+0.5×Cu+3×Sn)≥0.012. The manufacturing method is also disclosed.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种适用于高温成型的镀铝钢板或镀铝钢板，其在高温成型后获得高强度。解决方案：适用于在高温成形后获得高强度的高温成形的镀铝钢板或镀铝钢板的特征在于以质量％计含有0.15-0.55％的C， <= 0.5％Si，1.5-3.0％Mn，<= 0.04％S，<= 0.1％P，0.01-0.10％Al，优选适量的N，B和Ti，以及另外一个或多个<= 1.0 ％Ni，<= 0.5％Cu和<= 0.2％Sn，以满足（Ni + 0.5×Cu + 3×Sn）> = 0.012。还公开了制造方法。

25. 发明专利

JPH1153005A LEARNING METHOD FOR MODEL PARAMETER OF CONTROL SYSTEM 失效
公开(公告)号：JPH1153005A
公开(公告)日：1999-02-26
申请号：JP20871997
申请日：1997-08-04
申请人： NIPPON STEEL CORP
发明人： HIMURO YOSHIHIKO , DOI NATSUO , UEDA HIROSHI , MIYAKOSHI TOSHIHIRO , EGUCHI HARUHIKO
IPC分类号： G05B13/02 , G05B13/04
摘要： PROBLEM TO BE SOLVED: To prevent a failure of control and a decrease in learning effect by judging whether or not parameters after learning are proper from an output transition curve obtained by step response by the method which learn parameters of a prediction model according to the observed values of outputs observed at specific sampling intervals. SOLUTION: The thickness and width of a steel plate, a feed speed, a target temperature, a prediction model expression, a parameter initial set value, an output variation permissible range, a plant state permissible range, a sampling period, etc., are set previously in a specific setting means 22 and a parameter learning means 24 starts learning parameters according to them. A steel plate temperature Ts is detected in specific sampling cycles and sent to a learning means 24 and a steel plate temperature control means 276. The learning means 24 corrects the parameters sequentially according to the steel plate temperature Ts, finds a fuel gas flow rate as a target temperature according to the corrected specifications, and outputs a control signal Q to a flow rate control valve 14 according to the arithmetic result. Even after settlement, the parameters are learnt and corrected.

26. 发明专利

JPH09316545A METHOD FOR CONTROLLING STRIP TEMPERATURE IN CONTINUOUS ANNEALING FURNACE 失效
公开(公告)号：JPH09316545A
公开(公告)日：1997-12-09
申请号：JP15756296
申请日：1996-05-28
申请人： NIPPON STEEL CORP
发明人： HIMURO YOSHIHIKO , UEDA HIROSHI , MIYAKOSHI TOSHIHIRO , EGUCHI HARUHIKO
IPC分类号： C21D11/00 , C21D9/56
摘要： PROBLEM TO BE SOLVED: To provide a strip temp. control method of a continuous annealing furnace, by which the strips having different strip thickness, strip width, target strip temp. at the outlet of the heating furnace or priority of the strip temp., are joined and continuously inserted into the heating furnace to execute the annealing treatment. SOLUTION: At the time of changing a prescribed control cycle and velocity V at the center line, the strip temp. TS at the outlet of the heating furnace is continuously predicted from the present over to the future. Fuel flow rate optimizing a prescribed evaluating function with the deviation between a target strip temp. TSR at the outlet of the heating furnace and a predicted strip temp. at the outlet of the heating furnace and a variating quantity of the fuel flow rate in the heating furnace, is calculated to control the strip temp. TS at the outlet of the heating furnace. Then, in the case the priority PRT between the strip temps at the front and the rear parts differs, in order to execute the control seriously taking the strip temp. at the priority side, the strip temp. evaluating range N2 evaluating the deviation between the target strip temp. TSR at the outlet of the heating furnace and the predicted strip temp. at the outlet of the heating furnace over the future, is varied according to the priority PRT of the strip temp.

27. 发明专利

JPH08260122A METHOD FOR CONTROLLING COATING WEIGHT OF PLATING OF HOT-DIP COATED STEEL SHEET 失效
公开(公告)号：JPH08260122A
公开(公告)日：1996-10-08
申请号：JP5911795
申请日：1995-03-17
申请人： NIPPON STEEL CORP
发明人： SUENAGA MAKOTO , MIYAKOSHI TOSHIHIRO , OTANI CHIAKI
IPC分类号： G01N23/223 , C23C2/20
摘要： PURPOSE: To uniformly adjust the coating weight of plating in the transverse direction of the front and rear of a steel sheet subjecting to plating by irradiating this steel sheet with γrays, detecting the coating weight of plating in the transverse direction and controlling the manipulated variable of gas wiping nozzles according to the detected value. CONSTITUTION: The steel sheet 1 is circumferentially wound around a sink roll 2 in a hot-dip coating bath and is subjected to plating. While the steel sheet is straightened in shape by top and bottom support rolls 3, 4, the plating is adjusted to the prescribed coating weight by the gas wiping nozzles 5 disposed on the front and rear of the steel sheet. Instruments 6 for measuring the coating weight of plating by scanning in the transverse direction are disposed above the gas wiping nozzles 5 to measure the coating weights of plating in the respective positions of the front and rear surfaces in the transverse direction by irradiating the traveling steel sheet 1 subjected to coating in the transverse direction with γ rays or X rays. The distances from the front ends of the wiping nozzles to the steel sheet 1 are calculated in accordance with the measured values. The twisted-components of the coating weight in the transverse direction are calculated from the values of the distances, by which the right and left manipulated variables of the wiping nozzles 5 on the front and rear are determined. As a result, the coating weights of plating on the front and rear in the transverse direction of the steel sheet 1 are made uniform.

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