MANUFACTURE OF METAL TUBES

专利名称：MANUFACTURE OF METAL TUBES发明人：WEBB, Neal,PONCET, Philippe,WU, Ming

H.,CARPENTER, Scott,PEREZ, Jesse,ADLER,Paul

申请号：EP02798935.9申请日：20020906公开号：EP1427550A1公开日：20040616

摘要：The manufacture of seamless tubes in which the process includes providing anassembly having a metal tube blank (1), and an elongate metal core (2) of shape memoryeffect material which is surrounded and contacted by the tube blank (1) with a minimalgap. The assembly is elongated by mechanical working thereof at an elevatedtemperature until the tube blank (1) has been converted into a tube of desireddimensions. After the elongation step, the core (12) is subjected to a treatment whichresults in the core being in a stretched condition throughout its length, and does notsubstantially stretch the tube (11). The core is removed from the tube, and subsequentlysubjected to drawing passes over a nondeformable mandrel thereby refining theprecision 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 theability to fabricate smaller, longer tubes (111).

申请人：Memry Corporation

地址：3 Berkshire Boulevard Bethel, CT 06801 US

国籍：US

代理机构：Stenger, Watzke & RingPatentanwälte

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