JPS5610699A - Aluminum heat exchanger - Google Patents

Aluminum heat exchanger

Info

Publication number
JPS5610699A
JPS5610699A JP8563279A JP8563279A JPS5610699A JP S5610699 A JPS5610699 A JP S5610699A JP 8563279 A JP8563279 A JP 8563279A JP 8563279 A JP8563279 A JP 8563279A JP S5610699 A JPS5610699 A JP S5610699A
Authority
JP
Japan
Prior art keywords
fins
brazing
corrugated fins
core
tube
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
JP8563279A
Other languages
Japanese (ja)
Other versions
JPS6233512B2 (en
Inventor
Tatsuzo Kaneda
Taketoshi Sugiura
Tatsuo Miura
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP8563279A priority Critical patent/JPS5610699A/en
Publication of JPS5610699A publication Critical patent/JPS5610699A/en
Publication of JPS6233512B2 publication Critical patent/JPS6233512B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable to braze at minimum flux concentration sufficient for brazing a tube with corrugated fins in a furnace by a method wherein the electrode potentials of corrugated fins are set low so as to subject the corrugated fins to selective sacrificial corrosion.
CONSTITUTION: Aluminum or aluminum alloy is used as the material for a tube, while an aluminum alloy coated on its surface with an in-furnace brazing material and made baser in electrode potential than the tube by addition of Zn, Sn, In or the like is used as the material for corrugated fins. For example, the core material for the corrugated fins 2 may be A3003 added with 2% of Zn and coated with BA4343 at a coverage of 10%. After immersing the core in a 10% aqueous solution of a flux, the core is passed through a brazing furnace. After brazing Zn in the core material of the fins 2 is allowed to diffuse so as to increase the Zn concentration at the surfaces of the fins. Provided with such distribution of Zn, the fins 2 serve as effective sacrificial corrosion fins to prevent Al from pitting when exposed to corrosive environments.
COPYRIGHT: (C)1981,JPO&Japio
JP8563279A 1979-07-05 1979-07-05 Aluminum heat exchanger Granted JPS5610699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8563279A JPS5610699A (en) 1979-07-05 1979-07-05 Aluminum heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8563279A JPS5610699A (en) 1979-07-05 1979-07-05 Aluminum heat exchanger

Publications (2)

Publication Number Publication Date
JPS5610699A true JPS5610699A (en) 1981-02-03
JPS6233512B2 JPS6233512B2 (en) 1987-07-21

Family

ID=13864201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8563279A Granted JPS5610699A (en) 1979-07-05 1979-07-05 Aluminum heat exchanger

Country Status (1)

Country Link
JP (1) JPS5610699A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155398A (en) * 1980-04-30 1981-12-01 Nippon Radiator Co Ltd Method for preventing aluminum heat exchanger from corrosion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155398A (en) * 1980-04-30 1981-12-01 Nippon Radiator Co Ltd Method for preventing aluminum heat exchanger from corrosion

Also Published As

Publication number Publication date
JPS6233512B2 (en) 1987-07-21

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