JPS575880A - Use of stainless steel capable of preventing gap corrosion - Google Patents
Use of stainless steel capable of preventing gap corrosionInfo
- Publication number
- JPS575880A JPS575880A JP7889080A JP7889080A JPS575880A JP S575880 A JPS575880 A JP S575880A JP 7889080 A JP7889080 A JP 7889080A JP 7889080 A JP7889080 A JP 7889080A JP S575880 A JPS575880 A JP S575880A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- aqueous solution
- corrosion
- gap corrosion
- heated
- 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
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
PURPOSE: To reduce gap corrosion remarkably, in using a stainless steel in an aqueous solution containing a minute amount of chloride ion, by adjusting a pH of the aqueous solution to a pH dissolving corrosion products.
CONSTITUTION: In using a stainless steel in contact with a solution containing dissolved oxygen as an oxidizing agent and chloride ion, a pH of the solution is adjusted so as to be laid in a range between 3.5 and an passivated coating breakdown pH of the stainless steel. For example, hydrochloric acid is added to an aqueous solution in a pH adjusting tank 2 to adjust the pH thereof to 3.0 and, thereafter, said aqueous solution is heated to a temp. of 80°C in a heating tank 8. After heating, warm water is supplied to a plate type heat exchanger 4 from a warm water inlet 6 by a pump 3 and a cooling medium sent from a cooling medium inlet 7 is heated through a heat conductive plate 5. As the result, in the investigation performed after three months, gap corrosion is not recognized in gap parts between each plates.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7889080A JPS575880A (en) | 1980-06-13 | 1980-06-13 | Use of stainless steel capable of preventing gap corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7889080A JPS575880A (en) | 1980-06-13 | 1980-06-13 | Use of stainless steel capable of preventing gap corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS575880A true JPS575880A (en) | 1982-01-12 |
Family
ID=13674401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7889080A Pending JPS575880A (en) | 1980-06-13 | 1980-06-13 | Use of stainless steel capable of preventing gap corrosion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS575880A (en) |
-
1980
- 1980-06-13 JP JP7889080A patent/JPS575880A/en active Pending
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