Invention Grant
US07992299B2 Method for the economical production of heat exchanger tubes bent in a u-shape
失效
用于经济地生产以U形弯曲的热交换器管的方法
- Patent Title: Method for the economical production of heat exchanger tubes bent in a u-shape
- Patent Title (中): 用于经济地生产以U形弯曲的热交换器管的方法
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Application No.: US10539955Application Date: 2003-10-30
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Publication No.: US07992299B2Publication Date: 2011-08-09
- Inventor: Horst Glatz , Eberhard Lepin , Gerhard Schuez , Martin Straub
- Applicant: Horst Glatz , Eberhard Lepin , Gerhard Schuez , Martin Straub
- Applicant Address: DE Ulm
- Assignee: Wieland-Werke AG
- Current Assignee: Wieland-Werke AG
- Current Assignee Address: DE Ulm
- Agency: Flynn, Thiel, Boutell, Tanis, P.C.
- Priority: DE10260399 20021221
- International Application: PCT/EP03/12050 WO 20031030
- International Announcement: WO2004/056502 WO 20040708
- Main IPC: B21D21/00
- IPC: B21D21/00 ; B23P15/26

Abstract:
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.
Public/Granted literature
- US20060096346A1 Method and produciton line for rationally producing u-shaped heat exchange tubes Public/Granted day:2006-05-11
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