公开(公告)号：US06212925B1

公开(公告)日：2001-04-10

申请号：US09296411

申请日：1999-04-23

Applicant: Feizhou Wang ,  Atsumu Okamoto

Inventor： Feizhou Wang ,  Atsumu Okamoto

IPC: B21D3902

CPC classification number: B21C37/08

Abstract: It is an object of the present invention to provide a novel roll-forming method for steel pipes and equipment for same with which (1) the evidence that forming work in the FF forming method is mainly carried out at the cluster forming portion showing the poor formability is modified and improved without any deteriorating the advantage of the common-utilization of rolls in the FF forming method which employs basically the circular-bend method, and (2) the forming function at the breakdown forming portion is enhanced. Accordingly, the pinch-point formed by the upper and lower rolls is set at a boundary area between the target forming zone in the material's width direction and previously-formed zone or un-formed zone. The target forming zone is wound around a certain caliber of the upper roll on the bend-inner side, and bend-formed in such a way that the target forming zone is almost in non-contact with the lower roll as a result, the formability is remarkably improved and occurrences of roll flaws and roll marks or buckling can be prevented.

Abstract translation: 本发明的目的是提供一种用于钢管及其设备的新颖的辊轧成形方法，其中（1）在FF成形方法中形成工作主要在显示不良的簇形成部分上进行的证据 可以在基本上采用圆弯法的FF成形方法中改进和改进成形性，而不会降低通常使用辊的优点，（2）增强了击穿形成部分的成形功能。 因此，由上辊和下辊形成的夹点设置在材料宽度方向上的目标形成区域与预先形成的区域或未形成区域之间的边界区域。 目标形成区域绕弯曲内侧的上辊的一定口径卷绕，从而弯曲成形，使得目标成形区几乎与下辊不接触，成形性 可以显着地改善并且可以防止发生辊瑕疵和辊痕或弯曲。

公开(公告)号：US5878614A

公开(公告)日：1999-03-09

申请号：US793288

申请日：1997-03-10

Applicant: Atsumu Okamoto

Inventor： Atsumu Okamoto

IPC: B21C37/08 ,  B21D5/12 ,  B21D39/02 ,  B21D5/08 ,  B21D5/14 ,  B21D51/28

CPC classification number: B21C37/08 ,  B21C37/0822 ,  B21D5/12

Abstract: In the fin pass forming apparatus, the fin roller is split in two symmetrically with respect to the center line of the flow direction of a steel pipe to be formed, and a plurality of side rollers are arranged on a section perpendicular to the flow direction of the steel pipe. At least one fin roller stand is mixed in a group of roller stands including a cluster mill composed of a lower roller and a plurality of pairs of side rollers. The fin roller arranged in the cluster mill is split in two, one is a roller on the work side and the other is a roller on the drive side. The split fin rollers come into contact with a steel pipe to be formed at arbitrary positions in arbitrary directions in the circumferential direction of the steel pipe to be formed so as to conduct a fin pass formation. The plurality of fin pass forming rollers are arranged on a section different from the flow direction of the steel pipe to be formed.

Abstract translation: PCT No.PCT / JP96 / 01026 Sec。 371日期1997年3月10日 102（e）1997年3月10日PCT 1996年4月12日PCT PCT。 公开号WO97 / 03771 日期1997年2月6日在翅片通过成形装置中，翅片辊相对于要形成的钢管的流动方向的中心线对称地分开，并且多个侧辊布置在垂直于 到钢管的流动方向。 在一组辊架中混合至少一个翅片辊架，所述辊架包括由下辊和多对侧辊组成的簇磨机。 布置在群集磨机中的翅片辊分成两部分，一个是工作侧上的辊，另一个是驱动侧的辊。 分割翅片辊与要形成的钢管的圆周方向上的任意方向的任意位置形成的钢管接触，以进行翅片通过形成。 多个翅片成形辊布置在与要形成的钢管的流动方向不同的部分上。