公开(公告)号：US06799357B2

公开(公告)日：2004-10-05

申请号：US10235080

申请日：2002-09-05

申请人： Neal Webb ,  Philippe Poncet ,  Ming H. Wu ,  Scott Carpenter ,  Jesse Perez ,  Paul Adler

发明人： Neal Webb ,  Philippe Poncet ,  Ming H. Wu ,  Scott Carpenter ,  Jesse Perez ,  Paul Adler

IPC分类号： B23P1700

CPC分类号： B21C1/003 ,  B21C1/24 ,  B21C1/32 ,  B21C3/16 ,  B21C23/002 ,  B21C37/06 ,  B21C45/00 ,  Y10T29/4981

摘要： The manufacture of seamless tubes in which the process includes providing an assembly having a metal tube blank, and an elongate metal core of shape memory effect material which is surrounded and contacted by the tube blank with a minimal gap. The assembly is elongated by mechanical working thereof at an elevated temperature until the tube blank has been converted into a tube of desired dimensions. After the elongation step, the core is subjected to a treatment which results in the core being in a stretched condition throughout its length, and does not substantially stretch the tube. The core is removed from the tube, and subsequently subjected to drawing passes over a nondeformable mandrel thereby refining the precision of diametric and wall dimensions with improved ID and OD surface quality. There is also decoring and reinserting to improve final dimensions which results in the ability to fabricate smaller, longer tubes.

摘要翻译： 无缝管的制造，其中该方法包括提供具有金属管坯的组件和形状记忆效应材料的细长金属芯，其以最小的间隙被管坯包围和接触。 通过在升高的温度下的机械加工来使组件伸长，直到管坯被转换成所需尺寸的管。 在延伸步骤之后，对芯进行处理，其导致芯在其整个长度上处于拉伸状态，并且基本上不拉伸管。 芯从管中取出，随后在不可变形的芯轴上进行拉伸，从而通过改进的ID和OD表面质量来提高直径和壁尺寸的精度。 还装饰和重新插入以改善最终尺寸，这导致制造更小更长的管的能力。