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1. 发明公开

EP1207213A4 HIGH TENSILE COLD-ROLLED STEEL SHEET EXCELLENT IN DUCTILITY AND IN STRAIN AGING HARDENING PROPERTIES, AND METHOD FOR PRODUCING THE SAME 有权
标题翻译：具有优良的延展性和延伸时效特性和工艺生产高强度钢冷轧板
公开(公告)号：EP1207213A4
公开(公告)日：2003-08-27
申请号：EP01904407
申请日：2001-02-14
申请人： KAWASAKI STEEL CO
发明人： SAKATA KEI , TOSAKA AKIO , FURUKIMI OSAMU
IPC分类号： C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/58 , C21D9/46
CPC分类号： C22C38/001 , C21D8/0236 , C21D8/0273 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C22C38/02 , C22C38/04
摘要： A high tensile cold-rolled steel sheet which has a chemical composition, in mass %, wherein C: 0.05 % to 0.30, Si: 0.4 to 2.0 %, Mn: 0.7 to 3.0 %, P: 0.08 % or less, Al: 0.02 % or less, and N: 0.0050 to 0.0250 %, and N /Al is 0.3 or more, and a specific composite structure, and which exhibits excellent ductility and impact resistance and excellent strain aging hardening properties represented by a DELTA TS of 50 Mpa or more. The steel sheet is produced by a method which comprises preparing a cold-rolled thin steel sheet having the above composition, heating the cold-rolled thin steel sheet to a temperature between (Ac1 transformation point) and (Ac3 transformation point + 50 DEG C, and then cooling it at a cooling rate of 5 to 150 DEG C at least in the range of from 600 DEG C to 500 DEG C and holding it in a temperature range of 350 DEG C to 500 DEG C.
摘要翻译：本发明提供具有优异的延展性，应变时效硬化特性，并且碰撞阻力性能的高张力冷轧钢板，并因此提供用于其的制造方法。作为一个特定的装置，薄的冷轧钢板含有0.05％至0.30％的C，0.4％的Si，2.0％以下，Mn为0.7％至3.0％，0.08％或更少的P，0.02％或更少的Al 和0.0050％至以质量％计对N 0.0250％被制造，其中n / Al为0.3或更大。这种薄的冷轧钢板加热至（在Ac1相变点）和速率（〜Ac3相变点+ 50℃）之间的温度下，以5冷却中的在范围内/秒冷却到150℃的至少600至500℃，并在温度范围350〜500℃。该钢板的保持具有优异的延展性，具有50MPa以上的DELTA TS应变时效硬化特性，并且耐冲击性的性质。

2. 发明公开

EP0943696A4 STEEL PLATES FOR DRUM CANS, METHOD OF MANUFACTURING THE SAME, AND DRUM CAN 审中-公开
标题翻译：钢板，桶，方法及其和桶
公开(公告)号：EP0943696A4
公开(公告)日：2000-04-19
申请号：EP98941704
申请日：1998-09-03
申请人： KAWASAKI STEEL CO , KAWASAKI STEEL CONTAINER CO LT
发明人： TOSAKA AKIO , ARATANI MASATOSHI , NISHIMURA KEIJI , OGINO ATSUSHI , ARATANI MAKOTO , SHIMIZU TETSUO , KATO YASUNORI , AKEDA YASUHIRO , YAMASHITA ITARU
IPC分类号： C21D8/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/00 , B65D1/12 , C21D9/46
CPC分类号： C22C38/04 , C21D8/02 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D8/0278 , C22C38/06 , C22C38/12 , Y02P10/212
摘要： Steel plates for manufacturing drum cans; one with its N content set to 0.0050-0.0200 wt.% to increase solid solution of N, and the other with its Nb content set to 0.003-0.10 wt.% to fine an average crystal grain size; these steel plates having high normal-temperature and high-temperature strengths and a high low-temperature tenacity as compared with a conventional steel plate of this kind. A drum can using these steel plates and, as a result, having a high recycling frequency, a thin wall thickness and a light weight as compared with a conventional one; and a method of reliably manufacturing such steel plates.

3. 发明专利

CA2379698C COLD ROLLED STEEL SHEET AND GALVANIZED STEEL SHEET HAVING STRAIN AGE HARDENABILITY 未知
公开(公告)号：CA2379698C
公开(公告)日：2009-02-17
申请号：CA2379698
申请日：2001-02-14
申请人： KAWASAKI STEEL CO
发明人： YAMAZAKI TAKUYA , TOSAKA AKIO , KAMI CHIKARA
IPC分类号： C22C38/12 , C21D1/18 , C21D8/02 , C21D8/04 , C21D9/46 , C21D9/48 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06
摘要： An object of the present invention is to provide a cold-rolled steel sheet and an alloyed hot-dip galvanized steel sheet in which tensile strength is effectively increased by press forming and heat treatment while maintaining excellent deep drawability in press forming. Specifically, a steel composition contains less than 0.01% of C, 0.005 to 1.0% of Si, 0.01 to 1.0% of Mn, 0.005 to 0.050% of Nb, 0.005 to 0.030% of Al, 0.005 to 0.040% of N, 0.0005 to 0.0015% of B, 0.05% or less of P, and 0.01% or less of S, the balance substantially composed of Fe, in which the following equations (1) and (2) are satisfied: N% .gtoreq.0.0015 + 14/93=Nb% + 14/27=Al% + 14/11=B% ... (1) C% .ltoreq. (12/93) =Nb% . . . (2)

4. 发明专利

CA2380377C COLD-ROLLED STEEL SHEETS WITH SUPERIOR STRAIN-AGING HARDENABILITY 未知
公开(公告)号：CA2380377C
公开(公告)日：2007-01-09
申请号：CA2380377
申请日：2001-02-14
申请人： KAWASAKI STEEL CO
发明人： KAMI CHIKARA , TOSAKA AKIO
IPC分类号： C22C38/04 , C21D8/02 , C21D9/46 , C21D9/52 , C22C38/00 , C22C38/06
摘要： A cold-rolled steel sheet which has a chemical composition, in mass %, where in C: 0.15 % or less, Al: 0.02 % or less and N: 0.0050 to 0.0250 %, and Si+Mn/5+10P and N/Al are adjusted to less than 0.44 or less and 0.3 or more respectively, and a structure containing a ferrite phase having an average crystal grain size of 15 .mu.m or less in 90 area % or more, the residue of the structure being a pealite phase, and which contains N in the state of solid solution in an amount of 0.0010 % or more and has a tensile strength o f 440 Mpa or less and a yield ratio of 70 % or less. The steel sheet is produc ed by a method which comprises subjecting a slab having the above composition t o a hot rolling at a FDT of 800~C or higher and reeling at a temperature of 650~C or lower, to prepare a hot-rolled sheet, subjecting the hot-rolled she et to a cold rolling, and then subjecting the resultant cold-rolled sheet to a continuous annealing at a temperature not lower than its recrystallization temperature and not higher than 950~C, to a primary cooling to a temperature region of 500~C or lower at a great cooling rate, and to an overaging treatment under conditions of a temperature of 350 to 400~C and a residence time of 30 s or less. The steel sheet is excellent in strain aging hardening properties and suitable for a body of an automobile.

5. 发明专利

DE69909946T2 未知
公开(公告)号：DE69909946T2
公开(公告)日：2004-05-27
申请号：DE69909946
申请日：1999-10-29
申请人： KAWASAKI STEEL CO
发明人： ARATANI MAKOTO , KOBATA YUKIO , KUGUMINATO HIDEO , TOSAKA AKIO , MASATOSHI ARATANI , OKADA SUSUMU
IPC分类号： B21B3/00 , C21D8/04 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/12 , C22C38/14 , C21D9/48 , C22C38/04

6. 发明专利

DE69721509T2 未知
公开(公告)号：DE69721509T2
公开(公告)日：2004-04-08
申请号：DE69721509
申请日：1997-11-25
申请人： KAWASAKI STEEL CO
发明人： TOSAKA AKIO , OKUDA KANEHARU , ARATANI MASATOSHI
IPC分类号： C21D8/02 , C22C38/12 , C22C38/14 , C22C38/00 , C21D8/10 , C22C38/54

7. 发明专利

DE69311393D1 未知
公开(公告)号：DE69311393D1
公开(公告)日：1997-07-17
申请号：DE69311393
申请日：1993-02-18
申请人： KAWASAKI STEEL CO
发明人： FUJINAGA CHIKAKO , TOSAKA AKIO , KATO TOSHIYUKI , SATO KAKU , KUGUMINATO HIDEO , OKAWA YOSHIHIRO
IPC分类号： C21D8/02
摘要： A method of producing a steel sheet useful for making cans. The method steps include hot-rolling a slab consisting of about 0.0005 to 0.01 wt% C, about 0.001 to 0.04 wt% N (the total of C and N is at least about 0.008 wt%), about 0.05 to 2.0 wt% Mn, about 0.005 wt% or less Al, about 0.01 wt% or less O at a finish rolling temperature within a temperature range of about the Ar3 point to about 950 DEG C, coiling the rolled material at a temperature range of about 400 to 600 DEG C, cold rolling the material, continuously annealing the material at a temperature higher than the recrystallization temperature, and then temper-rolling the material. The steel sheet exhibits good workability during can making and which can be formed into a can having high strength.

8. 发明公开

EP0826436A4 ULTRA-THIN SHEET STEEL AND METHOD FOR MANUFACTURING THE SAME 失效
标题翻译： ULTRA薄钢板及其制造方法
公开(公告)号：EP0826436A4
公开(公告)日：2003-04-16
申请号：EP97908491
申请日：1997-03-14
申请人： KAWASAKI STEEL CO
发明人： ARATANI MAKOTO , RYU NAOTOSHI , KUGUMINATO HIDEO , TOSAKA AKIO , OKUDA KANEHARU , ARATANI MASATOSHI , OKADA SUSUMU
IPC分类号： B21B1/22 , B21B1/24 , B21B1/26 , B21B1/28 , B21B1/38 , B21B1/40 , B21B3/00 , B21B13/02 , B21B15/00 , B21B45/00 , C21D8/02 , C21D9/46 , C21D9/48 , C22C38/00 , C22C38/06 , C22C38/54 , C25D5/26
CPC分类号： B21B1/24 , B21B1/26 , B21B1/28 , B21B1/40 , B21B13/023 , B21B15/0085 , B21B45/004 , B21B2001/228 , B21B2001/383 , C21D8/0226 , C21D8/0278 , Y10T428/12722 , Y10T428/12854 , Y10T428/12972
摘要： A method for manufacturing an ultra-thin sheet steel comprising the steps of roughly rolling a steel billet into a sheet bar, but joining the sheet bar so rolled to a preceding sheet bar, heating widthwise edge portions of the sheet bars so joined by means of edge heaters, continuously cross rolling joined bars by means of paired cross rolls at least at three stands for finishing to produce a hot rolled steel strip having a sheet width of 950 mm or greater, a sheet thickness of 0.5-2 mm and a crown of ± 40 νm or less, cold rolling, continuously annealing and temper rolling the hot rolled steel strip, and plating the surface of a cold rolled steel strip as required to produce a sheet steel having an average sheet thickness of 0.20 mm or less, a sheet width of 950 mm or greater, and a sheet thickness variation in a sheet width direction of ± 4 % of the average sheet thickness and a hardness (HR30T) variation in the sheet width direction of ± 3 or less of the average hardness in a range not less than 95 % of a sheet width.

9. 发明公开

EP0885978A4 STEEL SHEET FOR DOUBLE WOUND PIPE AND METHOD OF PRODUCING THE PIPE 失效
标题翻译： STAHLBLECHFÜRDOPPELTGEWUNDENES ROHR UND VERFAHREN ZU DESSEN HERSTELLUNG
公开(公告)号：EP0885978A4
公开(公告)日：2000-02-09
申请号：EP97913438
申请日：1997-11-25
申请人： KAWASAKI STEEL CO
发明人： TOSAKA AKIO , OKUDA KANEHARU , ARATANI MASATOSHI
IPC分类号： C21D8/02 , C22C38/12 , C22C38/14 , C22C38/00 , C21D8/10 , C22C38/54
CPC分类号： C22C38/12 , C21D8/0226 , C21D8/0236 , C21D8/0268 , C22C38/14
摘要： A method of producing a steel sheet for a double woud pipe having an excellent formability, a high strength and an excellent toughness and having a ferrite grain diameter which does not increase after a pipe forming-heat treatment process. A steel blank containing one or two of 0.0005 to 0.020 wt.% of C, 0.003 to 0.040 wt.% of Nb and 0.005 to 0.060 wt.% of Ti is hot-rolled at a finish temperature of from 1,000 to 850 DEG C, wound at 750 DEG C or below, cold-rolled, continuously annealed the steel sheet at 650 to 850 DEG C and for not longer than 20 seconds, and subjected to secondary cold rolling at a draft of not higher than 20 %. At least 0.005 wt.% of at least one of Nb and Ti exists in the solid solution state and the crystal grain size of the ferrite structure is 5 to 10 mu m.
摘要翻译：本发明提供一种成型性优异，强度高且韧性优异，并且管成型加工处理后的铁素体粒径不增加的双层管用钢板的制造方法。将含有C：0.0005〜0.020重量％，Nb：0.003〜0.040重量％，Ti：0.005〜0.060重量％中的1种或2种的钢坯在1000〜850℃的终轧温度下进行热轧，在750℃以下卷取，冷轧后，在650〜850℃下连续退火20秒以下，以20％以下的压下率进行二次冷轧。以固溶状态存在至少0.005重量％的Nb和Ti中的至少一种，铁素体组织的晶粒尺寸为5〜10μm。

10. 发明专利

CA2377701C HIGH TENSILE COLD-ROLLED STEEL SHEET HAVING SUPERIOR DUCTILITY AND STRAIN AGE-HARDENING CHARACTERISTICS AND MANUFACTURING METHOD THEREFOR 未知
公开(公告)号：CA2377701C
公开(公告)日：2010-06-29
申请号：CA2377701
申请日：2001-02-14
申请人： KAWASAKI STEEL CO
发明人： SAKATA KEI , TOSAKA AKIO , FURUKIMI OSAMU
IPC分类号： C21D6/00 , C22C38/00 , C21D8/02 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/58
摘要： A high tensile cold-rolled steel sheet which has a chemical composition, in mass %, wherein C: 0.05 % to 0.30, Si: 0.4 to 2.0 %, Mn: 0.7 to 3.0 %, P: 0.08 % or less, Al: 0.02 % or less, and N: 0.0050 to 0.0250 %, and N /Al is 0.3 or more, and a specific composite structure, and which exhibits excellent ductility and impact resistance and excellent strain aging hardening properties represented by a .DELTA.TS of 50 Mpa or more. The steel sheet is produced by a method which comprises preparing a cold-rolled thin steel sheet having the above composition, heating the cold-rolled thin steel sheet to a temperature between (Ac1 transformation point) and (Ac3 transformation point + 50 ~C, and then cooling it at a cooling rate of 5 to 150 ~C at least in the range of from 600 ~C to 500 ~C and holding it in a temperature range of 350 ~C to 500 ~C.

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