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1. 发明授权

US5389164A Production method of strong and tough thick steel plate 失效
标题翻译：强韧钢板的生产方法
公开(公告)号：US5389164A
公开(公告)日：1995-02-14
申请号：US192875
申请日：1994-02-07
申请人： Atsuhiko Yoshie , Takashi Fujita , Masaaki Fujioka , Yuji Nomiyama , Hiroki Miyawaki
发明人： Atsuhiko Yoshie , Takashi Fujita , Masaaki Fujioka , Yuji Nomiyama , Hiroki Miyawaki
IPC分类号： B21B1/22 , B21B15/00 , C21D8/02
CPC分类号： C21D8/0242 , B21B1/22 , B21B2015/0071 , C21D2211/005 , C21D8/0226
摘要： A steel containing predetermined components is rolled in a recrystallization temperature region or a non-recrystallization temperature region of an austenite and is subsequently subjected to repeated hot bending. Alternatively, a surface layer portion is cooled during rolling of the steel described above to an .alpha. single phase or a .gamma./.alpha. dual phase temperature region, rolling is then effected and is finished at the point of time when the surface temperature of the plate rises above an Ac.sub.3 point due to recuperative heat, and repeated bending is carried out. Still alternatively, the steel described above is rolled to a cumulative reduction ratio of at least 20% in the non-recrystallization temperature region and is then subjected to repeated bending. Further alternatively, the surface layer portion is cooled during hot rolling of the steel described above to an .alpha. single or .gamma./.alpha. dual phase temperature region, rolling is then continued at a cumulative reduction ratio of at least 20% and is finished at the point when the surface temperature of the steel plate rises less than (Ac.sub.3 point--200.degree. C.) due to recuperative heat, and subsequently, repeated bending is carried out.
摘要翻译：含有预定组分的钢在奥氏体的再结晶温度区域或未再结晶温度区域中轧制，随后经受热重复弯曲。或者，在将上述钢轧制期间将表面层部分冷却至α单相或γ/α双相温度区域，然后进行轧制，并在板的表面温度升高的时间点完成由于回热而高于Ac3点，并且进行重复弯曲。或者，将上述钢轧制至非再结晶温度区域的至少20％的累积压下率，然后进行反复弯曲。或者，表面层部分在上述钢的热轧过程中被冷却到α单个或γ/α双相温度区域，然后以至少20％的累积压缩比继续轧制，并在该点当由于回热而使钢板的表面温度升高小于（Ac3点-200℃）时，进行反复弯曲。

2. 发明授权

US4785646A Method of cooling hot-rolled steel plate 失效
标题翻译：冷轧钢板冷却方法
公开(公告)号：US4785646A
公开(公告)日：1988-11-22
申请号：US942118
申请日：1986-12-16
申请人： Hiroshi Uekaji , Kiyoshi Tanehashi , Masanao Yamamoto , Hiroki Miyawaki , Harutoshi Ogai , Sumitada Kakimoto
发明人： Hiroshi Uekaji , Kiyoshi Tanehashi , Masanao Yamamoto , Hiroki Miyawaki , Harutoshi Ogai , Sumitada Kakimoto
IPC分类号： B21B45/02 , B21B1/26 , B21B1/38 , B21B15/00 , B21B37/44 , B21B37/76 , C21D1/667 , C21D9/52 , C21D11/00 , B21B37/10
CPC分类号： C21D1/667 , B21B37/44 , B21B1/26 , B21B2001/386 , B21B2015/0071 , B21B2261/05 , B21B37/76 , B21B45/0218
摘要： A method of water cooling a hot-rolled steel plate is disclosed. In this method, while a hot-rolled steel plate is being advanced lengthwise, a plurality of nozzles spray cooling water to the steel plate, and thus the plate is cooled to a predetermined temperature at a predetermined cooling rate. Before, while and after the plurality of nozzles carry out water-cooling, temperatures are consistently measured at predetermined temperature measurement points in cross-sectional areas of temperature measurement positions which are arranged lengthwise at predetermined locations of the steel plate. Each time such measurement is performed, degree of deformation of the plate is calculated on the basis of temperature differences between the temperature measurement points. When the calculated degree of deformation is not within an allowable range, corrections are made on the distribution of the water supplied by the plurality of nozzles.
摘要翻译：公开了一种对热轧钢板进行水冷却的方法。在该方法中，在热轧钢板长度方向前进的情况下，多个喷嘴将冷却水喷射到钢板，由此将板以规定的冷却速度冷却至规定的温度。在多个喷嘴进行水冷之前，之前和之后，在温度测量位置的在钢板的预定位置处纵向布置的横截面积中的预定温度测量点处一致地测量温度。每次进行这样的测量时，基于温度测量点之间的温度差来计算板的变形度。当计算出的变形度不在容许范围内时，对由多个喷嘴供给的水分布进行修正。

3. 发明授权

US4596615A Method of cooling hot steel plates 失效
标题翻译：冷热钢板冷却方法
公开(公告)号：US4596615A
公开(公告)日：1986-06-24
申请号：US703384
申请日：1985-02-20
申请人： Katsushige Matsuzaki , Masahiro Doki , Masato Sanazawa , Masanao Yamamoto , Hiroki Miyawaki
发明人： Katsushige Matsuzaki , Masahiro Doki , Masato Sanazawa , Masanao Yamamoto , Hiroki Miyawaki
IPC分类号： B21B45/02 , B21B1/26 , B21B1/38 , B21B15/00 , B21B37/44 , B21B37/76 , B21B45/00 , C21D1/667 , C21D9/52 , C21D11/00 , C21D1/18
CPC分类号： C21D1/667 , B21B37/44 , C21D11/005 , B21B1/26 , B21B2001/386 , B21B2015/0071 , B21B37/76 , B21B45/004 , B21B45/0218
摘要： Hot steel plate as hot-rolled is passed forward longitudinally through pairs of top and bottom rollers disposed in the direction of the plate travel. The steel plate is cooled with water supplied to its top and bottom surfaces from the nozzles on a plurality of cooling units disposed in the same longitudinal direction. Each cooling unit is disposed between adjoining pairs of the top and bottom rollers. Before cooling is started, the temperature distribution in the steel plate is determined and the desired mean cooling rate is set. The distance from the plate edge over which the supply of the cooling water at least to the bottom side of the plate is to be cut off is determined for each cooling unit on the basis of the determined temperature distribution and preset mean cooling rate. By so doing, the temperature of the inner edge portion of the steel plate is kept above the temperature of the middle portion, thereby allowing the Ar.sub.3 transformation in the inner edge portion to occur simultaneously with or after the Ar.sub.3 transformation in the middle portion. The cooling water directly supplied to the edge portion of the steel plate is cut off over the distance thus determined.
摘要翻译：热轧的热钢板沿着板行进方向设置的成对的上下辊纵向前进。钢板由设置在同一长度方向上的多个冷却单元上的喷嘴的顶面和底面供给水冷却。每个冷却单元设置在邻接的顶部和底部辊对之间。在开始冷却之前，确定钢板中的温度分布并设定所需的平均冷却速度。基于所确定的温度分布和预设的平均冷却速率，确定对于每个冷却单元至少要对板的底侧供应冷却水的板边缘的距离。通过这样做，钢板的内边缘部分的温度保持在中间部分的温度之上，从而允许内边缘部分中的Ar 3变形与中间部分中的Ar 3变换同时发生。直接供给到钢板的边缘部分的冷却水在如此确定的距离处被切断。

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