Title:
熱交換器およびその製造方法
Document Type and Number:
Japanese Patent JP6564620
Kind Code:
B2
Abstract:
The wall of each heat exchange tube of a condenser for a car air conditioner is composed of a core material layer, a first brazing material layer covering the outer surface of the core material layer, and a second brazing material layer covering the inner surface of the core material layer. A Zn diffused layer is formed in an outer surface layer portion of the core material layer. The deepest portion of the Zn diffused layer is located at a position 70 to 100 μm deep from an outermost surface of the wall. The Zn concentration of the outermost surface of the wall of the heat exchange tube is 0.55 mass % or higher. The Zn diffused layer includes a high potential portion whose spontaneous potential is at least 41 mV higher than the spontaneous potential at the boundary between the core material layer and the first brazing material layer.
More Like This:
| WO/2003/076862 | METHOD OF TREATING THE SURFACE OF A BRAZED EVAPORATOR |
Inventors:
Takashi Terada
Takushi Otsuki
Kobayashi Mana
Takushi Otsuki
Kobayashi Mana
Application Number:
JP2015112080A
Publication Date:
August 21, 2019
Filing Date:
June 02, 2015
Export Citation:
Assignee:
Keihin Thermal Technology Co., Ltd.
International Classes:
F28F19/06; B23K35/14; B23K35/22; B23K35/28; C22C21/00; F28D1/053; F28F21/08
Domestic Patent References:
| JP54033836A | ||||
| JP61255760A | ||||
| JP2010172965A | ||||
| JP2013250018A |
Attorney, Agent or Firm:
Matsumura Naoto
Akira Watanabe
Einosuke Kishimoto
Akira Watanabe
Einosuke Kishimoto