JPS57101640A - Composite brazing sheet for heat exchanger made of al alloy - Google Patents

Composite brazing sheet for heat exchanger made of al alloy

Info

Publication number
JPS57101640A
JPS57101640A JP17948080A JP17948080A JPS57101640A JP S57101640 A JPS57101640 A JP S57101640A JP 17948080 A JP17948080 A JP 17948080A JP 17948080 A JP17948080 A JP 17948080A JP S57101640 A JPS57101640 A JP S57101640A
Authority
JP
Japan
Prior art keywords
alloy
skin material
heat exchanger
content
core material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17948080A
Other languages
Japanese (ja)
Other versions
JPS6261661B2 (en
Inventor
Ken Toma
Kensho Takahashi
Isao Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MA Aluminum Corp
Original Assignee
Mitsubishi Aluminum Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Aluminum Co Ltd filed Critical Mitsubishi Aluminum Co Ltd
Priority to JP17948080A priority Critical patent/JPS57101640A/en
Publication of JPS57101640A publication Critical patent/JPS57101640A/en
Publication of JPS6261661B2 publication Critical patent/JPS6261661B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To obtain composite brazing sheets for heat exchanger made of Al alloy with improved property of pitting corrosion resistance, by a following method which Al-Mn alloy is used for a core material and Al-Mn-Zn alloy is used for skin material, thereby reducing Mn content of the skin material to the lower content than that of the core material. CONSTITUTION:A composite brazing sheet is composed of a core material of Al-Mn alloy containing at least 0.3-1.5wt% Mn, and a skin material of Al- Mn-Zn alloy containing at least 0.1-1.3% Mn and 0.1-2.0% Zn. and further the following condition, i.e., Mn content of core material >=Mn content of skin material +0.2% is satisfied. By this constitution, the corrosion of a skin material is decreased, and also the occurrence of local corrosion is reduced. As the skin material is electro-chemically baser than core material, the corrosion which may grow to pitting corrosion is reduced, even if the skin material may be locally corroded. Consequently, when said material is used for tubes of a heat exchanger, the superior performance of the tube is kept for a long time.
JP17948080A 1980-12-18 1980-12-18 Composite brazing sheet for heat exchanger made of al alloy Granted JPS57101640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17948080A JPS57101640A (en) 1980-12-18 1980-12-18 Composite brazing sheet for heat exchanger made of al alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17948080A JPS57101640A (en) 1980-12-18 1980-12-18 Composite brazing sheet for heat exchanger made of al alloy

Publications (2)

Publication Number Publication Date
JPS57101640A true JPS57101640A (en) 1982-06-24
JPS6261661B2 JPS6261661B2 (en) 1987-12-22

Family

ID=16066571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17948080A Granted JPS57101640A (en) 1980-12-18 1980-12-18 Composite brazing sheet for heat exchanger made of al alloy

Country Status (1)

Country Link
JP (1) JPS57101640A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63281795A (en) * 1987-05-14 1988-11-18 Furukawa Alum Co Ltd Al alloy brazing sheet having excellent corrosion resistance
JPH0565588A (en) * 1991-09-06 1993-03-19 Showa Alum Corp Aluminum material for brazing excellent in corrosion resistance
JP2008267714A (en) * 2007-04-20 2008-11-06 Furukawa Sky Kk Tube with inner surface groove made of aluminum having superior formability and its manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63281795A (en) * 1987-05-14 1988-11-18 Furukawa Alum Co Ltd Al alloy brazing sheet having excellent corrosion resistance
JPH0565588A (en) * 1991-09-06 1993-03-19 Showa Alum Corp Aluminum material for brazing excellent in corrosion resistance
JP2008267714A (en) * 2007-04-20 2008-11-06 Furukawa Sky Kk Tube with inner surface groove made of aluminum having superior formability and its manufacturing method

Also Published As

Publication number Publication date
JPS6261661B2 (en) 1987-12-22

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