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Title:
ALUMINUM EXTRUDED FLAT PERFORATED PIPE EXHIBITING EXCELLENT INNER/OUTER SURFACE CORROSION RESISTANCE, AND ALUMINUM HEAT EXCHANGER OBTAINED USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/147349
Kind Code:
A1
Abstract:
An aluminum extruded flat perforated pipe, wherein corrosion resistance is effective increased on the inner surface of a plurality of holes independently extending in parallel with one another in the axial direction of the pipe, and on the outer surface side of the pipe where an outer fin is brazed and joined thereto. An aluminum extruded flat perforated pipe 10 obtained by extruding an aluminum pipe main body material and a more electrochemically basic aluminum sacrificial anode material, wherein: an inner-surface sacrificial anode section 18 is formed by exposing the aluminum sacrificial anode material of at least part of the hole inner-circumferential section of each of the plurality of holes 12 extending in the pipe axial direction; and an outer-surface sacrificial anode section 17 is formed by exposing the aluminum sacrificial anode material, which is more electrochemically basic than is the aluminum pipe main body material, on the outer surface side of the aluminum extruded flat perforated pipe 10.

Inventors:
NAKAMURA, Shinichi (1-7-2 Otemachi, Chiyoda-k, Tokyo 04, 〒1000004, JP)
YAMASHITA, Naoki (1-7-2 Otemachi, Chiyoda-k, Tokyo 04, 〒1000004, JP)
NAGAO, Seiichi (3-1-12 Chitose, Minato-ku, Nagoya-sh, Aichi 11, 〒4550011, JP)
NAITOU, Kazuhisa (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
OKINOTANI, Takeshi (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
ICHIKAWA, Susumu (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
ITOH, Akira (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2018/004302
Publication Date:
August 16, 2018
Filing Date:
February 08, 2018
Export Citation:
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Assignee:
UACJ CORPORATION (1-7-2, Otemachi Chiyoda-k, Tokyo 04, 〒1000004, JP)
UACJ EXTRUSION CORPORATION (6-5 Nihonbashi Kabuto-cho, Chuo-ku Tokyo, 26, 〒1030026, JP)
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
B21C23/22; B21C25/02; F28F1/02; F28F1/30; F28F19/00; F28F19/06; F28F21/08
Domestic Patent References:
WO2009020171A12009-02-12
WO2017026510A12017-02-16
Foreign References:
US20060118282A12006-06-08
JP2014095524A2014-05-22
JPH05164496A1993-06-29
Attorney, Agent or Firm:
NAKASHIMA, Michio et al. (NAKASHIMA & NAKASHIMA, NAGOYA DIA BLDG.-1 16-22, Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)
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