CN1399007A - Chemical deactivation process of martensite stainless steel - Google Patents
Chemical deactivation process of martensite stainless steel Download PDFInfo
- Publication number
- CN1399007A CN1399007A CN 02122917 CN02122917A CN1399007A CN 1399007 A CN1399007 A CN 1399007A CN 02122917 CN02122917 CN 02122917 CN 02122917 A CN02122917 A CN 02122917A CN 1399007 A CN1399007 A CN 1399007A
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- CN
- China
- Prior art keywords
- stainless steel
- martensite stainless
- passivation
- technology according
- deactivation process
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- 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.)
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- Cleaning Or Drying Semiconductors (AREA)
Abstract
The present invention is a chemical passivation process of martensite stainless steel. Martensite stainless steel part is washed, eroded, passivation and closed treated to form anticorrosive oxide film on the surface to strengthen the anticorrosive capacity of the part.
Description
The part that the present invention relates to Martensite Stainless Steel processing cleans, the technology of etch, passivation, sealing.
Have the Martensite Stainless Steel passivation now mainly based on electrochemical method, energy consumption height, not easy to operate.
The invention provides a chemical deactivation process, this technological operation is simple, good reliability.
The present invention after the Martensite Stainless Steel part that will process is adjusted hardness by thermal treatment, carries out the Cleaning and Passivation art breading, makes the stainless steel components surface form the strong oxide film of erosion resistance.
Fig. 1 is a kind of Martensite Stainless Steel chemical deactivation process schema.
Below in conjunction with accompanying drawing the present invention is realized that the Martensite Stainless Steel passivation is elaborated.
The thermal treatment of Martensite Stainless Steel part is carried out mechanical polishing by operation 1 after adjusting hardness, operation 2 washings, and operation 3 electrochemical deoilings, operation 4 washings enter operation 5 etches, 2～20 minutes etch time, 5～50 ℃ of temperature, etching solution is by H
2SO
4(140～160g/L), (50～150g/L) form H.F.S.Enter operation 7 chemical passivations after operation 6 washings, passivation time 10～180 minutes, 25～70 ℃ of temperature, passivating solution is by Na
2Cr
2O
72H
2O (20～30g/L), 65%HNO
3(300～500g/L) form.Enter operation 9 sealings after operation 8 washings, 5～30 minutes off-periods, 10～55 ℃ of temperature, confining liquid is by Na
2Cr
2O
72H
2O (5～15g/L), Na
2CO
3(5～30g/L), GH～713 (28g/L) form.Enter operation 11 neutralizations after operation 10 washing, in and 10～60 minutes time, 30～75 ℃ of temperature, neutralizer is 1～10% NaOH solution.Then enter operation 12 washings, operation 13DI water floats, operation 14 dewatered dryings.
The present invention has process stabilizing, energy savings, low, the efficient high of cost. By this The product produced of invention has stronger resistance to corrosion, can be by 4 hours boiling tests and Non-corrosive.
Claims (6)
1, the present invention is characterized in that the Martensite Stainless Steel passivation technology be made up of mechanical polishing, cleaning, etch, chemical passivation, sealing.
2, technology according to claim 1 is characterized in that the sealing after the chemical passivation.
3, technology according to claim 1 is characterized in that the etch that chemical passivation is preceding.
4, technology according to claim 1 is characterized in that the chemical passivation condition is 1～180 minute time, 25～70 ℃ of temperature, and passivating solution is by Na
2CrO
72H
2O (20～30g/L), 65%HNO
3(300～500g/L) form.
5, technology according to claim 1 is characterized in that sealing condition is 5～30 minutes time, 10～55 ℃ of temperature, and confining liquid is by Na
2CrO
72H
2O (5～15g/L), Na
2CO
3(5～30g/L), GH～713 (28g/L) form.
6, technology according to claim 1 is characterized in that the etch condition is 2～20 minutes time, 5～50 ℃ of temperature, and etching solution is by H
2SO
4(140～160g/L), (50～150g/L) form H.F.S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122917 CN1399007A (en) | 2002-06-02 | 2002-06-02 | Chemical deactivation process of martensite stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122917 CN1399007A (en) | 2002-06-02 | 2002-06-02 | Chemical deactivation process of martensite stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1399007A true CN1399007A (en) | 2003-02-26 |
Family
ID=4745091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02122917 Pending CN1399007A (en) | 2002-06-02 | 2002-06-02 | Chemical deactivation process of martensite stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1399007A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476119B (en) * | 2009-01-23 | 2012-12-26 | 上海化学试剂研究所 | Surface passivation treatment fluid for martensitic stainless steel parts, preparation and use |
| CN102978602A (en) * | 2011-09-05 | 2013-03-20 | 沈阳黎明航空发动机(集团)有限责任公司 | Martensite stainless steel corrosion-resistant method |
| CN105018922A (en) * | 2015-07-31 | 2015-11-04 | 瑞声光电科技(常州)有限公司 | Ferritic stainless steel processing method |
| CN110804734A (en) * | 2019-10-12 | 2020-02-18 | 哈尔滨飞机工业集团有限责任公司 | Composite passivation method for stainless steel material |
| CN112458443A (en) * | 2019-09-06 | 2021-03-09 | 佛山市顺德区美的电热电器制造有限公司 | Stainless steel and preparation method and application thereof |
-
2002
- 2002-06-02 CN CN 02122917 patent/CN1399007A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476119B (en) * | 2009-01-23 | 2012-12-26 | 上海化学试剂研究所 | Surface passivation treatment fluid for martensitic stainless steel parts, preparation and use |
| CN102978602A (en) * | 2011-09-05 | 2013-03-20 | 沈阳黎明航空发动机(集团)有限责任公司 | Martensite stainless steel corrosion-resistant method |
| CN105018922A (en) * | 2015-07-31 | 2015-11-04 | 瑞声光电科技(常州)有限公司 | Ferritic stainless steel processing method |
| CN112458443A (en) * | 2019-09-06 | 2021-03-09 | 佛山市顺德区美的电热电器制造有限公司 | Stainless steel and preparation method and application thereof |
| CN110804734A (en) * | 2019-10-12 | 2020-02-18 | 哈尔滨飞机工业集团有限责任公司 | Composite passivation method for stainless steel material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |