ALUMINUM EXTRUDED FLAT PERFORATED PIPE EXHIBITING EXCELLENT INNER/OUTER SURFACE CORROSION RESISTANCE, AND ALUMINUM HEAT EXCHANGER OBTAINED USING SAME

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.

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Inventors:

NAKAMURA SHINICHI (JP)
YAMASHITA NAOKI (JP)
NAGAO SEIICHI (JP)
NAITOU KAZUHISA (JP)
OKINOTANI TAKESHI (JP)
ICHIKAWA SUSUMU (JP)
ITOH AKIRA (JP)

Application Number:

PCT/JP2018/004302

Publication Date:

August 16, 2018

Filing Date:

February 08, 2018

Export Citation:

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Assignee:

UACJ CORP (JP)
UACJ EXTRUSION CORP (JP)
DENSO CORP (JP)

International Classes:

B21C23/22; B21C25/02; F28F1/02; F28F1/30; F28F19/00; F28F19/06; F28F21/08

Domestic Patent References:

WO2009020171A1	2009-02-12
WO2017026510A1	2017-02-16

Foreign References:

US20060118282A1	2006-06-08
JP2014095524A	2014-05-22
JPH05164496A	1993-06-29

Attorney, Agent or Firm:

NAKASHIMA, Michio et al. (JP)

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