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11. 发明公开

EP2002904A1 METHOD OF MANUFACTURING SEAMLESS PIPE 失效转让
标题翻译：制造无缝管的方法
公开(公告)号：EP2002904A1
公开(公告)日：2008-12-17
申请号：EP07740521.5
申请日：2007-03-30
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： YAMAKAWA, Tomio , SHIMODA, Kazuhiro
IPC分类号： B21B19/04 , B21B23/00 , B21B39/00 , B21C51/00
CPC分类号： B21B19/04 , B21B23/00 , B21B37/78 , B21B39/06 , B21B2275/06
摘要： A billet is provided on a pass line between a pusher and a plug, and the billet is advanced and caught between a plurality of inclined rolls. At least between when said caught billet contacts said plug and when the piercing and rolling reaches a steady state, the advancing speed of the billet is not less than the advancing speed of the billet when the piercing and rolling is carried out without pushing the billet forward by the pusher in the steady state. By this manufacturing method, inner surface defects at a tip end of a hollow shell can be restrained.
摘要翻译：在推进器与栓塞之间的轧制线上设置钢坯，使钢坯前进并夹持在多个倾斜辊之间。至少在所述被捕获的钢坯与所述火花塞接触时，以及当穿孔和轧制达到稳定状态时，钢坯的前进速度不小于在不向钢坯前推的情况下进行穿孔和轧制时的钢坯的前进速度由推动者在稳定状态下。通过该制造方法，可以抑制中空壳体的前端的内表面缺陷。

12. 发明公开

EP0754503A1 METHOD AND APPARATUS FOR PIERCING SEAMLESS METAL PIPE 无效
标题翻译：方法和设备冲压无缝管
公开(公告)号：EP0754503A1
公开(公告)日：1997-01-22
申请号：EP96900188.2
申请日：1996-01-08
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： YAMAKAWA, Tomio , SHIMODA, Kazuhiro
IPC分类号： B21B19/04
CPC分类号： B21B19/04 , B21B19/06
摘要： The present invention is intended to provide a piercing-rolling method and a piercing-rolling apparatus for seamless tubes which realizes manufacturing of hollow shells of excellent quality having minimized defects on the outer surface thereof without inviting problems in rolling even when a piercing and rolling operation is performed at an expansion ratio of 1.15 or more.
The piercing and rolling method of the present invention is characterized in that a piercer provided with cone-shaped main rolls and disk rolls is used, and that when a piercing and rolling operation is performed at an expansion ratio of 1.15 or more, the following relations (1), (2), (3), (4), and (5) are satisfied: (1) 3 ≦ D1/d ≦ 7 (2) 9 ≦ D2/d ≦ 16 (3) 2 (4), and 2.5° ≦ θ1 ≦ 4.5° (5) 3° ≦ θ2 ≦ 6.5° wherein D1: diameter of the gorge portion of a main roll; D2: diameter at the grooved portion of a disk roll; d: outer diameter of a billet; θ1: inlet face angle of a main roll, and θ2: outlet face angle of a main roll.
The apparatus of the present invention is characterized in that D1 is between 510 and 2000 mm inclusive and D2 is between 1,530 and 4,000 mm inclusive, and that the above-described relations (3), (4), and (5) are satisfied.
According to the present method and apparatus for piercing and rolling, it is possible to perform a piercing and rolling operation without causing misrolling such as incomplete engagement of billets or incomplete rolling of the bottom. The resultant hollow shells do not possess defects on the outer and interior surfaces thereof. In addition, enlargement of the outer diameter at the bottom portion of a hollow shell, which may invite problems in subsequent rolling steps for elongation, can be prevented.

13. 发明公开

EP2050518A1 METHOD, AND APPARATUS, FOR PIERCING AND ROLLING SEAMLESS PIPE 有权转让
标题翻译：澳大利亚维多利亚州爱尔兰
公开(公告)号：EP2050518A1
公开(公告)日：2009-04-22
申请号：EP07768248.2
申请日：2007-07-05
申请人： Sumitomo Metal Industries, Ltd.
发明人： YAMAKAWA, Tomio , SHIMODA, Kazuhiro
IPC分类号： B21B19/04 , B21B27/02
CPC分类号： B21B19/04 , B21B27/025 , B21B2261/08 , B21B2267/02 , B21B2267/06
摘要： [Objective] To provide a method and apparatus for seamless tubes in which the occurrence of material peeling can be prevented even when the skew angle δ and tube expansion ratio are increased.
[Means for solution] A piercing-rolling method for seamless tubes using a piercer, which is provided with a pair of cone-shaped main rolls and a pair of disk rolls, each pair being arranged in an opposing manner with a pass line therebetween as a center axis, and a plug whose center axis coincides with the pass line, wherein a billet to be pierced and rolled is advanced while being spirally rotated by a drive rotation of the main rolls; the method of which is characterized in each of the disk rolls being arranged in an inclined state at a fixed skew angle δ to the pass line.
摘要翻译： [目的]提供一种无缝管的方法和装置，其中即使当倾斜角和管膨胀比增加时也可以防止材料剥离的发生。 [解决方案]一种使用穿孔机的无缝管的穿孔轧制方法，该穿孔机设置有一对锥形主辊和一对圆盘辊，每一对以相对的方式以其间的通过线布置在其间，中心轴线和中心轴线与通过线一致的插头，其中待穿孔轧制的坯料通过主辊的驱动旋转螺旋旋转而前进; 其方法的特征在于，每个盘辊以与通过线固定的倾斜角度倾斜地配置。

14. 发明公开

EP1961497A1 PLUG USED IN BORING MACHINE 有权转让
标题翻译：在EINEM LOCHWALZWERK停止ZUR VERWENDUNG
公开(公告)号：EP1961497A1
公开(公告)日：2008-08-27
申请号：EP06833959.7
申请日：2006-12-05
申请人： SUMITOMO METAL INDUSTRIES, LTD.
发明人： SHIMODA, Kazuhiro , YAMAKAWA, Tomio
IPC分类号： B21B25/00
CPC分类号： B21B25/00 , B21B19/04
摘要： A plug has a tip end portion, a taper portion, and a middle portion. The surface of the tip end portion is a spherical surface whose radius of curvature is R1 and length is L1 that is shorter than R1. The outer diameter of the taper portion on the front end side is D1, and the outer diameter on the back end side is D2 that is larger than D1, and the length is L2. The plug satisfies Expression (1), Expression (2) if 0 0.5 ⁢ D ⁢ 1 L ⁢ 1 + L ⁢ 2 ≤ 2.5 ⁢ D ⁢ 1 1.0 D ⁢ 2 / D ⁢ 1 ≤ 1.4 1.0 D ⁢ 2 / D ⁢ 1 1.8 - 0.8 ⁢ L ⁢ 1 / R ⁢ 1
摘要翻译：插头具有尖端部分，锥形部分和中间部分。前端部的表面是其曲率半径为R1且长度为比R1短的L1的球面。前端侧的锥形部的外径为D1，后端侧的外径为D2，D1的长度为L2。如果0

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