公开(公告)号：US07992299B2

公开(公告)日：2011-08-09

申请号：US10539955

申请日：2003-10-30

申请人： Horst Glatz ,  Eberhard Lepin ,  Gerhard Schuez ,  Martin Straub

发明人： Horst Glatz ,  Eberhard Lepin ,  Gerhard Schuez ,  Martin Straub

IPC分类号： B21D21/00 ,  B23P15/26

CPC分类号： B21D53/06 ,  B21B2003/005 ,  C21D8/10 ,  C21D9/08 ,  Y10T29/4935 ,  Y10T29/49391 ,  Y10T29/49798

摘要： The invention relates to a method for the manufacture of tubes bent in a U-shape (hairpin tubes) from a nonferrous metal, immediately following a tube production line. For that purpose, according to the invention, the method for the manufacture of tubes bent in a U-shape from a nonferrous metal, immediately following a tube production line, has the consecutive steps of: a) uncoiling the drawn tube material from a basket winder, b) straightening the drawn tube material, c) annealing and subsequently cooling the drawn tube material before or after cutting, for separation into tube portions, to the starting length for a tube bent in a U-shape, and d) bending the tube portions into a U-shape.

摘要翻译： 本发明涉及一种用于制造从有色金属弯曲成U形（发夹管）的管子的方法，其紧随着管生产线。 为此目的，根据本发明，紧随管生产线之后，从有色金属制造弯曲成U形的管的方法具有以下连续的步骤：a）将拉出的管材从一个筐 卷取机，b）矫直拉制的管材料，c）在切割前后，将拉拔管材料退火并随后冷却以分离成管部分到U形弯曲管的起始长度，以及d） 管部分成U形。