CN1026598C - Technology of steel derusting and passivating - Google Patents
Technology of steel derusting and passivating Download PDFInfo
- Publication number
- CN1026598C CN1026598C CN 88106426 CN88106426A CN1026598C CN 1026598 C CN1026598 C CN 1026598C CN 88106426 CN88106426 CN 88106426 CN 88106426 A CN88106426 A CN 88106426A CN 1026598 C CN1026598 C CN 1026598C
- Authority
- CN
- China
- Prior art keywords
- rust cleaning
- passivation
- technology
- steel
- passivating
- 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.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to novel technology for steel rust removal and passivation, which is characterized in that processed steel products and components are placed into acid washing liquid containing sodium dodecyl benzene sulfonate to be dipped for 10 seconds to 50 minutes, are cleaned by clear water, and are placed into quicklime liquid containing sodium benzoate for passivation treatment. The entire process of the technology is rapid. The passivation layer of the steel surface after passivation is stable. The technology has the advantages of no environmental pollution, good effect and low investment, and is suitable for the coating pretreatment of the steel components of various shapes and sizes.
Description
The invention belongs to the derusting process method of a kind of steel product, member, be applicable to the pre-treatment of various steel products, member application (comprising paint, plating, spraying plating, immersion plating).
In existing rust cleaning, the passivating method (seeing Chinese patent ZL85104742B), contain unsettled sodium lauryl sulphate in the rust cleaning liquid of employing, so the stability of rust cleaning liquid is not high, and rust cleaning speed is unhappy.In the passivating solution composition Sodium Nitrite is arranged, Sodium Nitrite has pollution to environment.With this rust cleaning liquid and passivating solution, the rust cleaning process will be controlled in 3-5 minute, and passivating process also is 3-5 minute, was difficult for adjusting the length of rust cleaning, passivation time, thereby underaction, and its range of application is narrower.
The objective of the invention is to quicken rust cleaning, passivating process, raise the efficiency, improve the stability of rust cleaning liquid, prolong the work-ing life of rust cleaning liquid and passivating solution, improve rust cleaning, passivation effect, improve the work situation of rust cleaning operation, reduce the pollution of passivating solution environment, simultaneously, improve the cost of rust cleaning, passivation.
To the effect that of the present invention, after steel product, component surface carried out pre-treatment, steel product, member put into contain Sodium dodecylbenzene sulfonate, soaked 10 seconds-50 minutes in the rust cleaning liquid of ethanol, citric acid, then in clean water basin or after movable water, spray cleans, rapidly steel product, member are put into the lime water that contains Sodium dodecylbenzene sulfonate, Sodium Benzoate or ammonium benzoate and carried out passivation 10 seconds-50 minutes, it is air-dry or dry to wash the back with clear water.
Do not contain sodium lauryl sulphate or Sodium palmityl sulfate in the rust cleaning liquid of the present invention, these compositions decompose in hydrochloric acid easily, and rust cleaning liquid is very fast aging, the rust cleaning poor effect.The present invention adopts in technology and contains Sodium dodecylbenzene sulfonate, and this not only can guarantee the effect that eliminates rust, and has improved the stability of rust cleaning liquid, has prolonged work-ing life, reduces cost.In the rust cleaning liquid that in this technology, is adopted alcohol component is arranged, forms synergistic effect, make the dissolving in the rust cleaning process and the effect of coming off is accelerated, the fastest reached for 10 seconds can the Ex-all rusty scale.Simultaneously, steel surface partial " stress concentration " is dispersed, and can improve the luminance brightness and the mechanical energy of steel surface simultaneously.Rust cleaning contains citric acid in the liquid, and it can chelated iron ion and is formed with the thing of fragrant ester smell with ethanol, has not only accelerated rust cleaning speed, has also improved work situation simultaneously.
The weight percent proportioning of contained hexamethylenetetramine (urotropine), Soxylat A 25-7 alkylphenol (TX-10), dodecyl diglycollic amide (6501) is very little in the rust cleaning liquid of the present invention, like this, the rust cleaning required time shortens than existing technology, and the rust cleaning effect is significantly improved.Used time of eliminating rust can shorten to for 10 seconds.Rust cleaning liquid can add to be joined, adjusts, and uses repeatedly.
The weight percent proportioning of various compositions is in the rust cleaning liquid of the present invention:
Hydrochloric acid 3-21
Hexamethylenetetramine (urotropine) 0.5-0.6
Ethanol 1-2
Citric acid 0.2-0.5
Sodium dodecylbenzene sulfonate 0.1-0.3
Soxylat A 25-7 alkylphenol (TX-10) 0.01-0.03
The dodecyl di-alcohol
Amine (6501) 0.01-0.03
Surplus is a water.
In the technical process of the present invention, when steel product, member soak 10 seconds-50 minutes in rust cleaning liquid after, clean or with after the clear water spray with clear water, put it into rapidly in the unslaked lime solution that contains Sodium dodecylbenzene sulfonate, Sodium Benzoate (or ammonium benzoate) and carry out passivation, passivation time is 10 seconds-50 minutes, then steel product, member are placed in the air air-dryly or dry, dry up with fanner and also can.
Contain Sodium dodecylbenzene sulfonate in the passivating solution of the present invention, passivation is strengthened.Do not contain Sodium Nitrite in the passivating solution, because of it has pollution to environment.Contain Sodium Benzoate (or ammonium benzoate) in the passivating solution, make passivating solution more stable, be more than 2 times of passivating solution in the existing technology work-ing life.Simultaneously, the passive film of formation is brighter, and quality is more stable.Contain Sodium dodecylbenzene sulfonate in the passivating solution that adopts in the technology of the present invention, make the passivation of passivating solution stronger, the steel product after the passivation, member are easier to clean.
The weight percent proportioning of various compositions is in the passivating solution that the present invention is adopted in passivating process:
Unslaked lime 1-5
Sodium Benzoate (or ammonium benzoate) 0.4-0.8
Hexamethylenetetramine (urotropine) 0.03-0.04
Sodium dodecylbenzene sulfonate 0.03-0.05
Surplus is a water.
This passivating solution can add according to arts demand and join, adjusts proportioning, and passivating solution can be used repeatedly, need not discharge.The steel product that passivating solution of the present invention is handled, member be placed in the air air-dry after, the time ratio of preservation is not given birth to the secondary rust with will growing of handling out of existing rust cleaning, passivation technology.
Rust cleaning of the present invention, passivating process required time regulation range are big.The fastest respectively is 10 seconds, and the slowest respectively is 50 minutes.Can adjust rust cleaning or required time of passivating process according to steel product, member coating process required time.
The present invention is owing to adopt new rust cleaning liquid and passivating solution, and makes rust cleaning, passivation effect better, and speed is faster and adjustable.The long service life of rust cleaning liquid and passivating solution, free from environmental pollution, improved work situation.This rust cleaning, passivation technology have high economic benefit and social benefit.
Claims (1)
1, a kind of steel surface rust cleaning, passivation technology, it comprises that pretreated steel surface is put into rust cleaning liquid to be soaked 10 seconds～50 minutes, putting into passivating solution after cleaning with clear water soaked 10 seconds～50 minutes, clean with clear water then, air-dry, the composition (weight percent) that it is characterized in that described rust cleaning liquid is: hydrochloric acid 3～21, hexamethylenetetramine (urotropine) 0.5～0.6, Sodium dodecylbenzene sulfonate 0.1～0.3, ethanol 1～2, citric acid 0.2～0.5, Soxylat A 25-7 alkylphenol 0.01～0.03, dodecyl diglycollic amide 0.01～0.03, surplus is a water; The composition of described passivating solution (weight percent) is: unslaked lime 1～5, and Sodium Benzoate or ammonium benzoate 0.4～0.8, six methynes four ammoniums 0.03～0.04, Sodium dodecylbenzene sulfonate 0.03～0.05, surplus is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106426 CN1026598C (en) | 1988-09-09 | 1988-09-09 | Technology of steel derusting and passivating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106426 CN1026598C (en) | 1988-09-09 | 1988-09-09 | Technology of steel derusting and passivating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041010A CN1041010A (en) | 1990-04-04 |
| CN1026598C true CN1026598C (en) | 1994-11-16 |
Family
ID=4834234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106426 Expired - Fee Related CN1026598C (en) | 1988-09-09 | 1988-09-09 | Technology of steel derusting and passivating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026598C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440495A (en) * | 2008-01-22 | 2009-05-27 | 北京科技桥科贸有限公司 | Environment protection type rapid strong oil-removing rust-removing agent |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373478A (en) * | 2010-08-20 | 2012-03-14 | 3M创新有限公司 | Rust removal composition |
| CN103433190B (en) * | 2013-08-28 | 2014-12-03 | 吴昊 | Energy-saving and environment-friendly corrosion-preventing method of metal workpieces |
| CN104152885B (en) * | 2014-08-08 | 2016-08-24 | 上海新大余氟碳喷涂材料有限公司 | Aluminum and the additive of alloy surface non-chromium passivation treatment fluid thereof and using method thereof |
| CN104611713B (en) * | 2015-01-19 | 2017-11-14 | 邢台钢铁有限责任公司 | 400 be stainless steel hot-rolling annealing wire rod nitration mixture pickle and acid washing method |
| CN107794540A (en) * | 2017-11-20 | 2018-03-13 | 湖南金裕环保科技有限公司 | Brightening rust removing agent, preparation method and its application method |
-
1988
- 1988-09-09 CN CN 88106426 patent/CN1026598C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440495A (en) * | 2008-01-22 | 2009-05-27 | 北京科技桥科贸有限公司 | Environment protection type rapid strong oil-removing rust-removing agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041010A (en) | 1990-04-04 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |