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公开(公告)号：US20060059969A1
公开(公告)日：2006-03-23
申请号：US11232853
申请日：2005-09-23
申请人： Hiroyuki Iwamoto , Akihito Yamane , Tooru Egoshi , Kenichi Sasaki
发明人： Hiroyuki Iwamoto , Akihito Yamane , Tooru Egoshi , Kenichi Sasaki
IPC分类号： B21B13/12
CPC分类号： B21B17/04 , B21B37/78 , B21B2015/0028
摘要： When manufacturing a seamless pipe by carrying out elongation rolling and sizing on a mother tube for forming a seamless pipe, the occurrence of portions of thickness variation in the seamless pipe is suppressed by previously identifying the portions of wall thickness variation where the thickness varies in the circumferential direction of the seamless pipe, and carrying out elongation rolling so that the thickness of the portions of the mother tube corresponding to the portions of wall thickness variation of the seamless pipe are different in thickness at the completion of elongation rolling from that of other portions of the mother tube. As a result, local variations in wall thickness in the circumferential direction of a seamless pipe are prevented.
摘要翻译： 通过在用于形成无缝管的母管上进行伸长率轧制和上浆而制造无缝管时，通过预先识别厚度变化部分的厚度变化的部分在无缝管中的发生被抑制， 无缝管的圆周方向，并进行伸长轧制，使得与无缝管的壁厚变化部分相对应的母管部分的厚度在延伸轧制完成时的厚度与其它部分的厚度不同 的母管。 结果，防止无缝管的圆周方向的壁厚的局部变化。
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公开(公告)号：US07174761B2
公开(公告)日：2007-02-13
申请号：US11232853
申请日：2005-09-23
申请人： Hiroyuki Iwamoto , Akihito Yamane , Tooru Egoshi , Kenichi Sasaki
发明人： Hiroyuki Iwamoto , Akihito Yamane , Tooru Egoshi , Kenichi Sasaki
IPC分类号： B21B13/12
CPC分类号： B21B17/04 , B21B37/78 , B21B2015/0028
摘要： When manufacturing a seamless pipe by carrying out elongation rolling and sizing on a mother tube for forming a seamless pipe, the occurrence of portions of thickness variation in the seamless pipe is suppressed by previously identifying the portions of wall thickness variation where the thickness varies in the circumferential direction of the seamless pipe, and carrying out elongation rolling so that the thickness of the portions of the mother tube corresponding to the portions of wall thickness variation of the seamless pipe are different in thickness at the completion of elongation rolling from that of other portions of the mother tube. As a result, local variations in wall thickness in the circumferential direction of a seamless pipe are prevented.
摘要翻译： 通过在用于形成无缝管的母管上进行伸长率轧制和上浆而制造无缝管时，通过预先识别厚度变化部分的厚度变化的部分在无缝管中的发生被抑制， 无缝管的圆周方向，并进行伸长轧制，使得与无缝管的壁厚变化部分相对应的母管部分的厚度在延伸轧制完成时的厚度与其它部分的厚度不同 的母管。 结果，防止无缝管的圆周方向的壁厚的局部变化。
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公开(公告)号：US07028518B2
公开(公告)日：2006-04-18
申请号：US10670193
申请日：2003-09-26
申请人： Kenichi Sasaki , Akihito Yamane
发明人： Kenichi Sasaki , Akihito Yamane
摘要： A method of producing a seamless steel tube to enable it to suppress not only the deviations in wall thickness occurring in the direction of reduction in a mandrel mill but also the derivations in thickness occurring at places deviating from the direction of reduction: measuring the wall thicknesses within the circumferential directions of a seamless steel tube 14 rolled in a production line comprising a mandrel mill 11 consisting of a plurality of reduction stands 111 to 115 having reduction rolls disposed in succession with the directions of reduction varied each other, and controlling, separately and individually based on the results of the measurement, the positions of both ends of each axis of the reduction rolls 114, 115 in the final reduction stands of the mandrel mill 11 so that the deviations in wall thickness can be minimized.
摘要翻译： 一种无缝钢管的制造方法，其不仅能够抑制在芯棒式无缝管轧机的还原方向上产生的壁厚偏差，而且抑制在偏离方向的位置发生的厚度导出：测定壁厚 在包括由具有还原辊的多个还原架11〜11/5组成的芯棒式无缝管轧机11的生产线中轧制的无缝钢管14的圆周方向内 依次减少方向彼此变化，并且基于测量结果分别地和分别地控制压下辊11的每个轴的两端的位置11 5 ，使得壁厚的偏差可以最小化。
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公开(公告)号：US20100251792A1
公开(公告)日：2010-10-07
申请号：US12602258
申请日：2008-01-08
申请人： Akihito Yamane
发明人： Akihito Yamane
IPC分类号： B21B1/08
CPC分类号： B21B17/02 , B21B13/103 , B21B17/04 , B21B27/024
摘要： The present invention provides a mandrel mill and the like that is capable of not only enhancing the elongation ratio of the pipe or tube, but also suppressing a pinhole defect from occurring. The first means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which two grooved rolls R11, R12 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 4.6 or over. The second means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which three grooved rolls R21, R22 and R23 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 2.8 or over.
摘要翻译： 本发明提供一种能够不仅提高管道的伸长率，而且能够抑制针孔缺陷的芯棒式无缝管轧机等。 本发明的第一方面提供了一种芯棒式无缝管轧机，其包括多个轧制机架，其中分别设置有两个带槽辊R11，R12，该芯棒式无缝管轧机的特征在于，第一轧制机架和第二轧制机的轧辊直径比 支架设置为4.6或更高的值。 本发明的第二方案提供了一种芯棒式无缝管轧机，其包括分别设置有三个槽辊R21，R22和R23的多个轧制机架，其特征在于，第一轧制机架的轧辊直径比和 第二轧机架设定在2.8以上的值。
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公开(公告)号：US09302302B2
公开(公告)日：2016-04-05
申请号：US13808431
申请日：2011-07-06
申请人： Akihito Yamane
发明人： Akihito Yamane
CPC分类号： B21B17/02 , B21B17/04 , B21B27/024
摘要： A mandrel mill a method for manufacturing a seamless pipe by using the mandrel mill includes a plurality of roll stands in which three grooved rolls R are disposed in each roll stand such that an angle formed by pressing directions is 120° and the pressing directions of the grooved rolls R are alternately shifted by 60° between adjacent roll stands, wherein a central angle θ defining a circular arc that constitutes a groove bottom profile of the grooved roll R disposed at least in the first and second roll stands is set at less than 60°. The mandrel mill can adequately suppress the problem of the mandrel bar not being able to be pulled out from a pipe after drawing and rolling, without resulting in an increase in facility cost and deterioration of maintainability.
摘要翻译： 芯棒式无缝管轧机使用芯棒式无缝管轧制机制造无缝管的方法包括多个辊架，其中在每个辊架中设置有三个槽辊R，使得由冲压方向形成的角度为120°， 开槽轧辊R在相邻轧辊机架之间交替偏移60°，其中中心角度＆amp; 限定构成至少设置在第一和第二辊架中的带槽辊R的凹槽底部轮廓的圆弧被设定为小于60°。 芯棒式无缝管轧机能够充分地抑制芯棒在拉拔轧制后不能从管中拉出的问题，而不会导致设备成本的增加和维护性的恶化。
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公开(公告)号：US09027377B2
公开(公告)日：2015-05-12
申请号：US12448858
申请日：2007-12-17
申请人： Akihito Yamane
发明人： Akihito Yamane
CPC分类号： B21B13/10 , B21B17/02 , B21B27/024
摘要： A rolling stand 100 in accordance with the invention is a rolling stand provided with three grooved rolls for rolling a tubular or bar shaped material to be rolled, in which three grooved rolls R21 to R23 are arranged in such a manner that an angle formed by pressing directions of any two adjacent grooved rolls of the three grooved rolls R21 to R23 comes to 120 degrees. With regard to a cross sectional shape of each of the grooved rolls R21 to R23 formed by cutting each of the grooved rolls in a plane which includes a center line of a rotating axis of each of the grooved rolls R21 to R23 and is orthogonal to a pass line of a material to be rolled, any one grooved roll R21 is provided with a first straight portion L1 extending vertically to the pressing direction in both side flange portions, and the other two grooved rolls R22 and R23 are provided with a second straight portion L2 opposing to the first straight portion L1 and extending in parallel to the first straight portion L1 in the flange portions.
摘要翻译： 根据本发明的轧制机架100是一种轧制机架，其具有用于轧制待轧制的管状或棒状材料的三个槽轧辊，其中三个槽轧辊R21至R23以这样的方式布置，即通过压制形成的角度 三个槽辊R21〜R23的任意两个相邻的带槽辊的方向为120度。 关于通过在包括每个带槽辊R21至R23的旋转轴线的中心线的平面中切割每个带槽辊而形成的每个带槽辊R21至R23的横截面形状并且与 任何一个带槽辊R21设置有在两个侧凸缘部分中垂直于按压方向延伸的第一直线部分L1，另外两个带槽辊R22和R23设置有第二直线部分 L2与第一直线部分L1相对并且在凸缘部分中平行于第一直线部分L1延伸。
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公开(公告)号：US08584498B2
公开(公告)日：2013-11-19
申请号：US12602258
申请日：2008-01-08
申请人： Akihito Yamane
发明人： Akihito Yamane
IPC分类号： B21B1/08
CPC分类号： B21B17/02 , B21B13/103 , B21B17/04 , B21B27/024
摘要： The present invention provides a mandrel mill and the like that is capable of not only enhancing the elongation ratio of the pipe or tube, but also suppressing a pinhole defect from occurring. The first means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which two grooved rolls R11, R12 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 4.6 or over. The second means of the present invention provides a mandrel mill comprising a plurality of rolling stands in which three grooved rolls R21, R22 and R23 are disposed, respectively, the mandrel mill being characterized in that the roll diameter ratio for the first rolling stand and the second rolling stand is set at a value of 2.8 or over.
摘要翻译： 本发明提供一种能够不仅提高管道的伸长率，而且能够抑制针孔缺陷的芯棒式无缝管轧机等。 本发明的第一方面提供了一种芯棒式无缝管轧机，其包括多个轧制机架，其中分别设置有两个带槽辊R11，R12，该芯棒式无缝管轧机的特征在于，第一轧制机架和第二轧制机的轧辊直径比 支架设置为4.6或更高的值。 本发明的第二方案提供了一种芯棒式无缝管轧机，其包括分别设置有三个槽辊R21，R22和R23的多个轧制机架，其特征在于，第一轧制机架的轧辊直径比和 第二轧机架设定在2.8以上的值。
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公开(公告)号：US08490450B2
公开(公告)日：2013-07-23
申请号：US13425857
申请日：2012-03-21
申请人： Akihito Yamane
发明人： Akihito Yamane
IPC分类号： B21B17/02
摘要： A retract mandrel mill, comprising a mandrel mill and an extractor, the mandrel mill including a mandrel bar and being configured to roll a tube blank into which the mandrel bar is inserted, the extractor being configured to extract the mandrel bar from the tube blank that has been rolled in the mandrel mill, wherein the distance between the mandrel mill and the extractor is adjustable, and a method for rolling a tube blank by using the retract mandrel mill. As the result of the adjustable distance, even when a tube blank which is shorter than usual is rolled, there is no need to add an extra extension to the length of the tube blank to be elongation-rolled, and the wear of the mandrel bar can be suppressed so that the tube blank can be rolled efficiently and with high yields.
摘要翻译： 一种包括芯棒式无缝管轧机和提取器的收缩型芯棒式无缝管轧机，所述芯棒式无缝管轧机包括芯棒，并且被配置成滚动将芯棒插入其中的管坯，所述提取器被配置为从管坯抽出芯棒， 已经在芯棒式无缝管轧机中轧制，其中芯棒式无缝管轧机和提取器之间的距离是可调节的，以及通过使用回缩式芯棒式无缝管轧机轧制管坯的方法。 作为可调节距离的结果，即使当轧制比通常更短的管坯时，也不需要在延长轧制的管坯的长度上增加额外的延伸，并且芯棒的磨损 可以抑制管坯的高效率和高收率地滚压。
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公开(公告)号：US20060053855A1
公开(公告)日：2006-03-16
申请号：US11222798
申请日：2005-09-12
申请人： Akihito Yamane
发明人： Akihito Yamane
IPC分类号： B21B17/10
摘要： A complex Fourier transform is performed on measured values of wall thickness at points in a cross section of a pipe in an axial direction, types of thickness deviation are classified, thickness deviation amount is calculated from the absolute value of the complex Fourier component, the position of a thick or thin portion of thickness deviation is calculated from the phase of the complex Fourier component, and manufacturing conditions of the pipe are adjusted based on these variables. The relationship r·exp(jθ) between the thickness deviation amount r and phase θ of a first-order thickness deviation obtained for cross sections in the axial direction is subjected to a complex Fourier transform as a function of pipe longitudinal direction, the thickness deviation is further classified by the frequency of twist of the thickness deviation, and an action is taken to prevent the thickness deviation according to the classified thickness deviation.
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10.发明授权公开(公告)号：US08939004B2
公开(公告)日：2015-01-27
申请号：US13728071
申请日：2012-12-27
申请人： Akihito Yamane , Shigeru Kidani
发明人： Akihito Yamane , Shigeru Kidani
CPC分类号： B21B37/78 , B21B17/04 , B21B37/58 , B21B37/62 , B21B38/00 , B21B2261/10 , B21B2271/02 , B21B2273/14 , B21B2273/16 , B21B2275/06
摘要： [Problem to be Solved]A device for adjusting the rolling positions of rolling rolls and restraining poor roll-biting of the front edge part of a pipe material rolled by a three-roll mandrel mill includes pressing-down devices 1 (P1 to P6) for moving rolling rolls R1 to R6 in the rolling direction and a control unit 2 for controlling the pressing-down devices 1. Immediately after the front edge part of a pipe material T has begun to be rolled by the rolling rolls disposed on at least one rolling stand of the rolling rolls R1 to R6, the control unit 2 controls the pressing-down device 1 to move the rolling rolls in the closing direction. Preferably, the rolling rolls disposed on at least one rolling stand of the rolling rolls R1 to R6 in the closing direction are moved at a speed of 16 mm/sec or higher using the pressing-down device 1.
摘要翻译： [待解决问题]用于调整轧辊的轧制位置并抑制由三辊心轴轧机轧制的管材的前边缘部分的不良滚动的装置包括压下装置1（P1至P6） 用于在轧制方向上移动轧制辊R1至R6;以及用于控制压下装置1的控制单元2.紧接着管材T的前边缘部分已经开始被设置在至少一个 轧制辊R1〜R6的轧制机架，控制单元2控制压下装置1使轧辊沿关闭方向移动。 优选地，使用压下装置1，使轧制辊R1〜R6的至少一个轧制机架以关闭方向设置在16mm / sec以上的速度。
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