JPS5672164A - Chemically washing method for steel member - Google Patents
Chemically washing method for steel memberInfo
- Publication number
- JPS5672164A JPS5672164A JP14947779A JP14947779A JPS5672164A JP S5672164 A JPS5672164 A JP S5672164A JP 14947779 A JP14947779 A JP 14947779A JP 14947779 A JP14947779 A JP 14947779A JP S5672164 A JPS5672164 A JP S5672164A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- soln
- org
- adjusted
- steel member
- 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
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
PURPOSE: To prevent the corrosion of a steel member due to scale and rust with a single soln. by descaling the member with an org. acid soln. pH-adjusted with an org. acid or an aqueous ammonia and adding a pH adjusting agent, polyphosphate and nitrite to the soln. to carry out rust preventive treatment.
CONSTITUTION: An aqueous soln. of one or more kinds of org. acids selected from citric acid, malic acid, gluconic acid and glycolic acid is adjusted to 3.0W3.5pH with sulfamic acid and/or tartaric acid or an aqueous ammonia, and a steel member is descaled by dipping in the resulting soln. To the soln. are then added one or more among an aqueous ammonia, ethanolamine and hydrazine as a pH adjusting agent, one or more kinds of polyphosphates selected from polyphosphate, ultraphosphate and metaphosphate and nitrite, and rust preventive treatment is carried out with the soln. adjusted to 5W9pH. At this time, the org. acid concn. is also adjusted so as to prevent the precipitation of leached Fe ions.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14947779A JPS602391B2 (en) | 1979-11-20 | 1979-11-20 | Chemical cleaning method for steel parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14947779A JPS602391B2 (en) | 1979-11-20 | 1979-11-20 | Chemical cleaning method for steel parts |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5672164A true JPS5672164A (en) | 1981-06-16 |
JPS602391B2 JPS602391B2 (en) | 1985-01-21 |
Family
ID=15475997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14947779A Expired JPS602391B2 (en) | 1979-11-20 | 1979-11-20 | Chemical cleaning method for steel parts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS602391B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110681A (en) * | 1981-12-23 | 1983-07-01 | Showa Denko Kk | Rust removing method for pure iron |
EP0589966A1 (en) * | 1991-05-16 | 1994-04-06 | H.E.R.C. Products Incorporated | Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
JP2021518883A (en) * | 2018-05-11 | 2021-08-05 | マクダーミッド エンソン インコーポレイテッド | Pickling solution near neutral pH on multiple metals |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61109493A (en) * | 1984-10-30 | 1986-05-27 | Eiji Ishii | Induction motor drive device |
-
1979
- 1979-11-20 JP JP14947779A patent/JPS602391B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110681A (en) * | 1981-12-23 | 1983-07-01 | Showa Denko Kk | Rust removing method for pure iron |
EP0589966A1 (en) * | 1991-05-16 | 1994-04-06 | H.E.R.C. Products Incorporated | Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
EP0589966A4 (en) * | 1991-05-16 | 1994-05-18 | Herc Inc | Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
JP2021518883A (en) * | 2018-05-11 | 2021-08-05 | マクダーミッド エンソン インコーポレイテッド | Pickling solution near neutral pH on multiple metals |
Also Published As
Publication number | Publication date |
---|---|
JPS602391B2 (en) | 1985-01-21 |
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