JPS5627893A - Method for providing aluminum member with heat transmitting surface - Google Patents
Method for providing aluminum member with heat transmitting surfaceInfo
- Publication number
- JPS5627893A JPS5627893A JP10330479A JP10330479A JPS5627893A JP S5627893 A JPS5627893 A JP S5627893A JP 10330479 A JP10330479 A JP 10330479A JP 10330479 A JP10330479 A JP 10330479A JP S5627893 A JPS5627893 A JP S5627893A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum member
- heat transmitting
- transmitting surface
- salts
- heat
- 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.)
- Pending
Links
Abstract
PURPOSE: To provide a heat transmitting surface for an aluminum-made heat exchanging pipe suitable for both evaporation and condensation by immersing an aluminum member in a treating liquid containing a salt or salts of alkali metals or alkaline earth metals, in a method of forming a heat transmitting surface for heat exchangers.
CONSTITUTION: An aluminum member is immersed in a treating liquid containing one or more salts of alkali metals or alkaline earth metals, at a temperature higher than 40°C and at pH of 6W13 or higher, to form a conversion coating on the surface of the aluminum member. As the salt or salts in the treating liquid, halogenides, sulfates, nitrates, carbonates or the like are generally used. By such a treatment, the surface of the aluminum member is roughened, the heat transmitting area is increased and a heat transmitting surface suitable for both evaporation and condensation is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10330479A JPS5627893A (en) | 1979-08-13 | 1979-08-13 | Method for providing aluminum member with heat transmitting surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10330479A JPS5627893A (en) | 1979-08-13 | 1979-08-13 | Method for providing aluminum member with heat transmitting surface |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5627893A true JPS5627893A (en) | 1981-03-18 |
Family
ID=14350485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10330479A Pending JPS5627893A (en) | 1979-08-13 | 1979-08-13 | Method for providing aluminum member with heat transmitting surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5627893A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191381A (en) * | 1990-11-23 | 1992-07-09 | Nippondenso Co Ltd | Formation of corrosion resistant chemical coating film on aluminum surface |
-
1979
- 1979-08-13 JP JP10330479A patent/JPS5627893A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191381A (en) * | 1990-11-23 | 1992-07-09 | Nippondenso Co Ltd | Formation of corrosion resistant chemical coating film on aluminum surface |
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