CN87103080A - High-speed passivation treatment technology for iron and steel - Google Patents
High-speed passivation treatment technology for iron and steel Download PDFInfo
- Publication number
- CN87103080A CN87103080A CN 87103080 CN87103080A CN87103080A CN 87103080 A CN87103080 A CN 87103080A CN 87103080 CN87103080 CN 87103080 CN 87103080 A CN87103080 A CN 87103080A CN 87103080 A CN87103080 A CN 87103080A
- Authority
- CN
- China
- Prior art keywords
- acid
- iron
- steel
- copper sulfate
- passivation
- 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
- Chemical Treatment Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
High-speed passivation treatment technology for iron and steel of the present invention, Passivation Treatment is simple to operate, available immersion process, also available brushing method.Passivating solution comprises a kind of mantoquita, selenous acid and the reaction promotor in copper sulfate or the cupric chloride.Do not need during Passivation Treatment passivating solution is heated, passivation time is 2～4 minutes.This technology is applicable to various steel-iron components such as soft steel, medium carbon steel, high carbon steel, steel alloy and cast iron, and passive film is for being rich in ornamental aterrimus.
Description
The invention belongs to the metal material surface chemical treatment.
Passivation Treatment is a steel-iron components protection processing method commonly used; usually use the solution that contains sodium hydroxide and Sodium Nitrite (or SODIUMNITRATE) to carry out Passivation Treatment (tool Engineering Design Manual according to circumstances; the 45th piece of material protection (trial edition); China Machine Press publishes, in April, 1979), adopt this passivating solution; need during Passivation Treatment passivating solution to be warmed to 135～145 ℃ according to the difference of iron and steel kind; treatment time is longer, need 20～120 minutes approximately, and the acid resistance of passive film is relatively poor.Russian patent SU 859477 adopts the slightly acidic passivating solution, and Passivation Treatment can be carried out at normal temperatures, but the treatment time is longer, and passive film is not a black.
The purpose of this invention is to provide can be under the condition of not heating fast Passivation Treatment ， And can obtain being rich in the passivation process and the preparation of passivation solution of ornamental black passivation film.
The passivation process process that the present invention adopts is: oil removing-cleaning-rust cleaning-cleaning-passivation-cleaning-saponification-cleaning-air-dry-oil.Wherein the passivating solution used of Passivation Treatment comprises: select a kind of mantoquita, selenous acid, And to select a kind of compound as reaction promotor at least from iron protochloride, hydrochloric acid, nitric acid, sulfuric acid, oxalic acid, boric acid and sodium-chlor in copper sulfate or the cupric chloride.The Passivation Treatment immersion process divides secondary to carry out.To be immersed in 0～50 ℃ the passivating solution 1～2 minute earlier through the steel-iron components of oil removing, processing of rust removing, take out air-dryly, be immersed in 0～50 ℃ the passivating solution 1～2 minute again, and then carry out saponification and oil.Cleaning in the above-mentioned technology is with clear water cleans.The aqueous solution of common metal clean-out system is used in oil removing, and concentration is 3～5%.Aqueous solution of hydrochloric acid is used in rust cleaning, and concentration is 15%, till being dipped to rusty stain and taking off, is generally 5～10 minutes.The saponification aqueous solution of soap solution, concentration is 30～50 grams per liters, and the saponification liquor temperature is 20～50 ℃, and soak time is 3～5 minutes.Oil with No. 10 machine oil or other slushing oil that is suitable for, oily temperature is 20～50 ℃, and soak time is 1～2 minute.
Passivation process of the present invention is carried out the Passivation Treatment except that steel-iron components being immersed in the passivating solution, but also brushing method be stained with 0～50 ℃ passivating solution with brush and brush piece surface repeatedly, till reaching required passivation film thickness.Carry out other steps of Passivation Treatment with brushing method, as oil removing, rust cleaning, saponification, oil, cleaning etc., identical with immersion process, the prescription of the used passivating solution of brushing method is also identical with immersion process.
Passivating solution used in the present invention has five kinds of prescriptions, can be according to the material selection of steel-iron components suitable prescription.Wherein fill a prescription 1 for basic recipe, applicable to soft steel, medium carbon steel, high carbon steel, low alloy steel, plain cast iron.Prescription 2～5 is applicable to the steel alloy of good corrosion resistance, as rapid steel, alloy spring steel.
Prescription 1 comprises copper sulfate, selenous acid and iron protochloride, and the weight percent of each composition is:
Copper sulfate 0.1～1%
Selenous acid 0.5～2%
Iron protochloride 0.1～0.2%
All the other are water
Prescription 2 comprises copper sulfate, selenous acid, nitric acid and hydrochloric acid, and the weight percent of each composition is:
Copper sulfate 0.2～3%
Selenous acid 0.8～2%
Nitric acid 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
Prescription 3 comprises copper sulfate, selenous acid, boric acid and oxalic acid, and the weight percent of each composition is:
Copper sulfate 0.1～1%
Selenous acid 0.5～2%
Boric acid 0.1～0.5%
Oxalic acid 0.05～0.1%
All the other are water
Prescription 4 comprises copper sulfate, selenous acid, sodium-chlor and hydrochloric acid, and the weight percent of each composition is:
Copper sulfate 0.5～1%
Selenous acid 0.5～2%
Sodium-chlor 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
Prescription 5 comprises cupric chloride, selenous acid, sulfuric acid and hydrochloric acid, and the weight percent of each composition is:
Cupric chloride 0.5～2%
Selenous acid 0.5～2%
Sulfuric acid 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
The compound method of passivating solution is: size and quantity according to steel-iron components are determined the passivation liquid measure that desire is prepared; Passivation liquid measure according to the desire preparation takes by weighing each composition and water consumption in proportion; If reaction promotor is solid (as iron protochloride, oxalic acid, boric acid, a sodium-chlor), then take out 1/10th of water consumption, it is stand-by to dissolve in reaction promotor; Add copper sulfate (or cupric chloride) and selenous acid in remaining water, stirring makes it to dissolve fully; In the solution that contains copper sulfate (or cupric chloride) and selenous acid, slowly add the aqueous solution of reaction promotor, stir.If reaction promotor is liquid acid (as sulfuric acid, hydrochloric acid, a nitric acid), can directly slowly add in the aqueous solution that contains copper sulfate (or cupric chloride) and selenous acid, stirring gets final product.
Compared with the prior art the present invention has following advantage:
1. passivation speed is fast, divides secondary passivity to handle with immersion process, and each 1～2 minute, add up to be no more than 4 minutes, more faster than other passivating methods.
2. passivation operation is easy, available immersion process, and also available brushing method carries out Passivation Treatment.
3. do not need passivating solution is heated during Passivation Treatment, can in 0～50 ℃ of temperature range, carry out Passivation Treatment, save energy.
4. passive film steady quality, the corrosive performance of the aqueous solution of its acid-and base-resisting, salt is sent out good that orchid, blackout handle than routine.
5. the iron and steel kind of Shi Yonging is wide, and soft steel, medium carbon steel, high carbon steel, steel alloy, cast iron etc. all can use.
6. the passive film color is for being rich in ornamental aterrimus.
Embodiment:
Enumerate 15 embodiment below, list the steel-iron components material of each embodiment and used prescription with form.Each component content is a weight percentage in the form.Each composition is the technical pure product.
The passivation process step of each embodiment is as follows:
1. according to the material of steel-iron components, select suitable preparation of passivation solution for use.
2. preparation passivating solution.The preparation passivating solution carries out at ambient temperature, and the purity of used each component cpd is technical pure, and water is ordinary tap water.At first, determine the passivating solution quantity of desire preparation according to the size and the quantity of steel-iron components; Passivating solution quantity according to the desire preparation takes by weighing each composition and water consumption in ratio in the last table; If reaction promotor is solid (as iron protochloride, oxalic acid, boric acid, a sodium-chlor), then take out 1/10th of water consumption, with solid reaction promoter dissolve the back stand-by, if reaction promotor is liquid acid (as nitric acid, hydrochloric acid, a sulfuric acid), the dilution of then needn't fetching water; Add solid sulphuric acid copper (or cupric chloride) and solid selenous acid in remaining water, stirring makes it to dissolve fully; Slowly pour the aqueous solution or the liquid acid of reaction promotor in the solution that contains copper sulfate (or cupric chloride) and selenous acid into, stirring gets final product.
3. oil removing.Steel-iron components is placed the aqueous solution of common metal clean-out system, and concentration is 3～5%, and temperature is a room temperature, about 5 minutes of time.
4. clean with clear water.
5. rust cleaning.Part is placed aqueous hydrochloric acid, and strength of solution is 15%, and temperature is a room temperature, soaks 5～10 minutes, till taking off to rusty stain.
6. clean with clear water.
7. Passivation Treatment.Available immersion process, also available brushing method.With immersion process time-division secondary passivity, soak for the first time and take out air-dryly after 1～2 minute, immersed again in the passivating solution 1～2 minute.The length of soak time is relevant with temperature, soaks 2 minutes when room temperature is lower than 10 ℃, soaks when room temperature is higher than 30 ℃ 1 minute.Room temperature was soaked 1～2 minute in the time of 10～30 ℃.As use brushing method, available brush to be stained with passivating solution and brush piece surface repeatedly, till reaching required passivation film thickness.
8. clean with clear water.
9. saponification.Part is placed the aqueous solution (30～50 grams per liter) of saponification liquor, soaked 3～5 minutes, the saponification liquor temperature is 20～50 ℃, if the saponification liquor temperature is lower than 20 ℃, should heat.
10. clean with clear water.
11. it is air-dry.
12. oil.Place No. 10 machine oil or other slushing oil that is suitable for to soak 1～2 minute part, oily temperature should be 20～50 ℃, if oily temperature is lower than 20 ℃, should heat.
Be aterrimus with the steel-iron components surface after the above-mentioned processing step processing.
Claims (7)
1, a kind of iron and steel is handled passivation technology, its technological process is oil removing-cleaning-rust cleaning-cleaning-passivation-cleaning-saponification-cleaning-air-dry-oil, it is characterized in that deactivating solution comprises: select a kind of mantoquita in copper sulfate or the cupric chloride, selenous acid, at least from iron protochloride, hydrochloric acid, nitric acid, oxalic acid, boric acid, select a kind of compound as reaction promotor in sulfuric acid and the sodium-chlor, the Passivation Treatment immersion process, divide secondary to carry out, after placing 0～50 ℃ passivating solution to soak 1～2 minute the part, take out air-dryly, place 0～50 ℃ passivating solution to soak again 1～2 minute.
2, a kind of iron and steel passivation process, its technological process is oil removing-cleaning-rust cleaning-cleaning-passivation-cleaning-saponification-cleaning-air-dry-oil, it is characterized in that deactivating solution comprises: select a kind of mantoquita, selenous acid in copper sulfate or the cupric chloride, from iron protochloride, hydrochloric acid, nitric acid, oxalic acid, boric acid, sulfuric acid and sodium-chlor, select a kind of compound as reaction promotor at least, Passivation Treatment adopts brushing method, the passivating solution of being stained with 0～50 ℃ with brush is brushed piece surface repeatedly, till reaching required passivation film thickness.
3, according to the iron and steel passivation process of claim 1 or 2, it is characterized in that described passivating solution comprises copper sulfate, selenous acid and iron protochloride, the weight percent of each composition is:
Copper sulfate 0.1～1%
Selenous acid 0.5～2%
Iron protochloride 0.1～0.2%
All the other are water
4, according to the iron and steel passivation process of claim 1 or 2, it is characterized in that described passivating solution comprises copper sulfate, selenous acid, nitric acid and hydrochloric acid, the weight percent of each composition is:
Copper sulfate 0.2～3%
Selenous acid 0.8～2%
Nitric acid 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
5, according to the iron and steel passivation process of claim 1 or 2, it is characterized in that described passivating solution comprises copper sulfate, selenous acid, boric acid and oxalic acid, the weight percent of each composition is:
Copper sulfate 0.1～1%
Selenous acid 0.5～2%
Boric acid 0.1～0.5%
Oxalic acid 0.05～0.1%
All the other are water
6, according to the iron and steel passivation process of claim 1 or 2, it is characterized in that described passivating solution comprises copper sulfate, selenous acid, sodium-chlor and hydrochloric acid, the weight percent of each composition is:
Copper sulfate 0.5～1%
Selenous acid 0.5～2%
Sodium-chlor 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
7, according to the iron and steel passivation process of claim 1 or 2, it is characterized in that described passivating solution comprises cupric chloride, selenous acid, sulfuric acid and hydrochloric acid, the weight percent of each composition is:
Cupric chloride 0.5～2%
Selenous acid 0.5～2%
Sulfuric acid 0.1～1%
Hydrochloric acid 0.1～1%
All the other are water
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103080 CN87103080A (en) | 1987-04-24 | 1987-04-24 | High-speed passivation treatment technology for iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103080 CN87103080A (en) | 1987-04-24 | 1987-04-24 | High-speed passivation treatment technology for iron and steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87103080A true CN87103080A (en) | 1988-11-02 |
Family
ID=4814284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87103080 Pending CN87103080A (en) | 1987-04-24 | 1987-04-24 | High-speed passivation treatment technology for iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87103080A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183035A (en) * | 2018-10-16 | 2019-01-11 | 成都先进金属材料产业技术研究院有限公司 | Corrosion is write agent and preparation method thereof |
| CN110385441A (en) * | 2018-04-19 | 2019-10-29 | 锦州宏达新材料有限公司 | A kind of ferroalloy wet crushing grinding method |
| CN111742078A (en) * | 2017-12-21 | 2020-10-02 | 埃科莱布美国股份有限公司 | Non-fluorescent blackened optical assembly |
-
1987
- 1987-04-24 CN CN 87103080 patent/CN87103080A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111742078A (en) * | 2017-12-21 | 2020-10-02 | 埃科莱布美国股份有限公司 | Non-fluorescent blackened optical assembly |
| CN110385441A (en) * | 2018-04-19 | 2019-10-29 | 锦州宏达新材料有限公司 | A kind of ferroalloy wet crushing grinding method |
| CN109183035A (en) * | 2018-10-16 | 2019-01-11 | 成都先进金属材料产业技术研究院有限公司 | Corrosion is write agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113088853B (en) | Hot galvanizing process for high-strength fastener | |
| CN1239743C (en) | Sliding component | |
| CN107513716A (en) | A kind of raw material of aluminum alloy method for cleaning surface | |
| CN108707888A (en) | A kind of aluminum alloy surface passivation process improving corrosion resistance | |
| CN111235559A (en) | Surface treatment method of stainless steel, hydrophobic stainless steel and application thereof | |
| CN1058622A (en) | Normal-temperature efficient rust removing additive for steel workpiece, preparation and application thereof | |
| CN87103080A (en) | High-speed passivation treatment technology for iron and steel | |
| CN108048826B (en) | Rust removal phosphating solution for wire drawing and preparation method thereof | |
| CN111118488B (en) | Copper material anticorrosion passivation method and preparation method of passivation solution used in method | |
| CN101029400A (en) | Direct chromium stainless-steel pickling agent | |
| CN1289711C (en) | Magnesium alloy chemical plating nickle solution and its plating method | |
| CN1301879A (en) | Method for thermal dip plating with rear earth aluminium alloy | |
| CN1239746C (en) | Technology of selective lead removed for running water pipe fitting made of copper alloy and lead removal liquid | |
| CN1300378C (en) | Anticorrosion rust eliminating agent and its preparation method and application | |
| CN1098078A (en) | Quick etching method for natural marble | |
| JPH0129872B2 (en) | ||
| CN1023026C (en) | Nickel chemical plating technology for surface of unstable chemcial property metal workpiece | |
| CN1453394A (en) | Iron and steel surface sensitizing and blackening agent and relevant blackening process | |
| CN1142322C (en) | Chemically polishing method for stainless steel | |
| CN111364046B (en) | Brightening pickling method for rare metal and alloy processing material thereof and pickling solution | |
| CN111020587B (en) | Deplating liquid for removing nickel layer on copper surface and deplating process thereof | |
| CN1038131A (en) | Rust remover | |
| JP2004011026A (en) | Surface treatment method for aluminum or aluminum alloy | |
| JP3382040B2 (en) | Chemical conversion treatment liquid for titanium or titanium alloy and surface treatment method thereof | |
| US20230049815A1 (en) | Methods and compositions for forming magnetite coatings on ferrous metals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |