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1. 发明公开

EP1911533A4 DRAWING/ROLLING CONTROL METHOD 有权
标题翻译：轧机/ PULL控制方法
公开(公告)号：EP1911533A4
公开(公告)日：2009-03-25
申请号：EP06730822
申请日：2006-03-31
申请人： SUMITOMO METAL IND
发明人： IWAMOTO HIROYUKI
IPC分类号： B21B37/78 , B21B17/02
CPC分类号： B21B37/78 , B21B17/04
摘要： A drawing/rolling control method capable of manufacturing a raw tube with high dimensional accuracy and suppressing a trouble in rolling. The groove bottom wall thickness of the raw tube (P) is measured on a #1 stand with an ultrasonic wall thickness meter (1) installed between the #1 stand and a #2 stand, the outer diameter of a mandrel bar (B) is calculated based on the set value of a roll gap and the groove bottom wall thickness of the raw tube (P) on the #1 stand, and the longitudinal portion of the mandrel bar (B) at which its outer diameter is calculated based on information on the position of a bar retainer (BR) is specified. By repeating the steps above, the longitudinal distribution of the outer diameters of the mandrel bar is calculated, the longitudinal portions of the mandrel bar in contact with the raw tube on subsequent stage stands are specified based on the information on the position of the bar retainer, and the roll gaps on the subsequent stage stands are set based on the outer diameters of the specified longitudinal portions of the mandrel bar.

2. 发明公开

EP1607148A4 METHOD OF MANUFACTURING SEAMLESS TUBE 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES NAHTLOSEN ROHRS
公开(公告)号：EP1607148A4
公开(公告)日：2006-05-31
申请号：EP04723362
申请日：2004-03-25
申请人： SUMITOMO METAL IND
发明人： IWAMOTO HIROYUKI , YAMANE AKIHITO , EGOSHI TOORU , SASAKI KENICHI
IPC分类号： B21B15/00 , B21B17/04 , B21B37/78 , B21B17/02 , B21B23/00
CPC分类号： B21B17/04 , B21B37/78 , B21B2015/0028
摘要： A method of manufacturing a seamless tube by applying drawing/rolling and fixed diameter rolling to a raw seamless tube, comprising the steps of obtaining, beforehand, the wall thickness varying portion of the seamless tube where the thickness of the seamless tube varies in the circumferential direction, and drawing/rolling the seamless tube so that the thickness of the drawn/rolled raw seamless tube at a portion corresponding to the wall thickness varying portion is differentiated from the thickness of the seamless tube at general portions other than that portion to suppress the occurrence of the thick wall varying portion in the seamless tube. Thus, the wall thickness of the seamless tube is prevented from being partially varied in the circumferential direction.
摘要翻译：一种无缝管的制造方法，其特征在于，对原料无缝管实施拉拔轧制和固定直径轧制，其特征在于，预先取得无缝管的壁厚变化部，方向进行拉伸/轧制，使得与壁厚变化部对应的部分的拉伸轧制原料无缝管的厚度与该部分以外的一般部分的无缝管的厚度不同，在无缝管中出现厚壁变化部分。因此，防止了无缝管的壁厚在圆周方向上局部变化。

3. 发明公开

EP2080569A4 DEVICE AND METHOD FOR MONITORING MANUFACTURING STATUS OF SEAMLESS PIPE AND SEAMLESS PIPE MANUFACTURING FACILITY 有权
标题翻译：装置及监测方法制造无缝管及设备的状态，制造无缝PIPES
公开(公告)号：EP2080569A4
公开(公告)日：2012-07-11
申请号：EP07792023
申请日：2007-08-06
申请人： SUMITOMO METAL IND
发明人： IWAMOTO HIROYUKI
IPC分类号： B21B19/04 , B21B23/00 , B21B38/04 , B21C51/00 , G01B15/02 , G01B17/02
CPC分类号： B21C51/00 , B21B19/04 , B21B37/78 , B21B38/006 , B21B38/04 , B21B2261/04 , B21B2261/10 , B21B2261/20 , B21B2261/21 , B21J5/10 , G01B17/02 , G01B21/085

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