Title:
METHOD FOR FORMING TUBE INSERTION HOLE INTO TANK
Document Type and Number:
Japanese Patent JP2005153001
Kind Code:
A
Abstract:
To bore a tube insertion hole at the correct position while straightening the outline dimension of an extruded tank.
In a heat exchanger composed of at least tubes having a heat exchange medium passage, fins alternately interposed between the tubes, and a tank arranged on one of or both of the tubes, the tank is extruded, and stored in an outline dimension straightening die. Liquid is poured into the tank, and high pressure is applied to the liquid to straighten the shape of the tank. A tube insertion hole is bored in one side of the tank by moving a punch in an upper die in the direction of the tank simultaneously with straightening of the shape of the tank.
Inventors:
TAKAYANAGI NAOTO
AKAIKE ATSUSHI
AKIYAMA KATSUJI
ETO HITOHISA
AKAIKE ATSUSHI
AKIYAMA KATSUJI
ETO HITOHISA
Application Number:
JP2003399243A
Publication Date:
June 16, 2005
Filing Date:
November 28, 2003
Export Citation:
Assignee:
ZEXEL VALEO CLIMATE CONTR CORP
International Classes:
F28F9/02; B21D3/14; B21D28/28; B21D53/08; F25B39/00; F28D1/053; F28F9/013; (IPC1-7): B21D53/08; B21D3/14; B21D28/28; F25B39/00; F28D1/053; F28F9/013; F28F9/02
Attorney, Agent or Firm:
Kazuho Onuki
Akito Kotake
Akito Kotake
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