HEAT EXCHANGER TUBE PRECURSOR AND METHOD OF PRODUCING THE SAME

• US 20160097607A1
• Filed: 12/14/2015
• Published: 04/07/2016
• Est. Priority Date: 05/06/2003
• Status: Abandoned Application

• Current Assignee: Mitsubishi Aluminum Company Limited (Mitsubishi Materials Corporation)
• Original Assignee: Mitsubishi Aluminum Company Limited (Mitsubishi Materials Corporation)
• Inventors: KATSUMATA, Masaya, Hyogo, Yasunori
• Application Number:
  US14/967,470
• Publication Number:
  US 20160097607A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B23K 1/0012 Brazing heat exchangers
• CPC Class Codes: B23K 1/008 Soldering within a furnace B23K1/012 takes precedence
• CPC Class Codes: B23K 1/012 Soldering with the use of hot gas
• CPC Class Codes: B23K 1/203 Fluxing, i.e. applying flux onto surfaces
• CPC Class Codes: B23K 2101/06 Tubes
• CPC Class Codes: B23K 2101/14 Heat exchangers
• CPC Class Codes: B23K 2101/34 Coated articles , e.g. plated or painted; Surface treated articles
• CPC Class Codes: B23K 2103/10 Aluminium or alloys thereof
• CPC Class Codes: B23K 35/0222 for use in soldering, brazing B23K35/0205 takes precedence
• CPC Class Codes: B23K 35/0238 layered
• CPC Class Codes: B23K 35/0244 Powders, particles or spheres; Preforms made therefrom
• CPC Class Codes: B23K 35/24 Selection of soldering or welding materials proper B23K35/34 takes precedence
• CPC Class Codes: B23K 35/28 with the principal constituent melting at less than 950 degrees C
• CPC Class Codes: B23K 35/282 Zn as the principal constituent
• CPC Class Codes: B23K 35/286 Al as the principal constituent
• CPC Class Codes: B23K 35/36 Selection of non-metallic compositions, e.g. coatings, fluxes B23K35/34 takes precedence; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest selection of soldering or welding materials proper B23K35/24
• CPC Class Codes: B23K 35/3603 Halide salts
• CPC Class Codes: B23K 35/3605 Fluorides
• CPC Class Codes: B23K 35/3612 with organic compounds as principal constituents
• CPC Class Codes: B23K 35/3613 Polymers, e.g. resins
• CPC Class Codes: B23K 35/362 : Selection of compositions of fluxes B23K35/365, B23K35/368 take precedence
• CPC Class Codes: B32B 15/017 : one layer being formed of aluminium or an aluminium alloy, another layer being formed of an alloy based on a non ferrous metal other than aluminium
• CPC Class Codes: C23C 4/12 : characterised by the method of spraying
• CPC Class Codes: F28F 19/02 : by using coatings, e.g. vitreous or enamel coatings
• CPC Class Codes: F28F 19/06 : of metal
• CPC Class Codes: F28F 21/084 : from aluminium or aluminium alloys
• CPC Class Codes: F28F 2255/16 : extruded
• CPC Class Codes: Y10T 428/13 : Hollow or container type article [e.g., tube, vase, etc.]

Abstract

A heat exchanger tube precursor that allows manufacturing a heat exchanger having high corrosion resistance after brazing treatment is provided. The heat exchanger tube precursor includes: an Al alloy tube; and a flux layer including a Si powder, a Zn-containing flux, a Zn-free flux, and a binder, the flux layer being formed on an outer surface of the Al alloy tube.

Claims

1. A heat exchanger tube precursor comprising:

an Al alloy tube; and

a flux layer including a Si powder, a Zn-containing flux, a Zn-free flux, and a binder,

the flux layer being formed on an outer surface of the Al alloy tube.

2-10. -10. (canceled)