CN106065479A - A kind of copper piece passivation technology - Google Patents
A kind of copper piece passivation technology Download PDFInfo
- Publication number
- CN106065479A CN106065479A CN201610502810.6A CN201610502810A CN106065479A CN 106065479 A CN106065479 A CN 106065479A CN 201610502810 A CN201610502810 A CN 201610502810A CN 106065479 A CN106065479 A CN 106065479A
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- CN
- China
- Prior art keywords
- copper piece
- passivation
- copper
- kilograms
- surfacecti proteon
- Prior art date
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Classifications
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- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/20—Other heavy metals
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- 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
- C23G1/10—Other heavy metals
- C23G1/103—Other heavy metals copper or alloys of copper
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The present invention relates to the passivation of copper, be specifically related to a kind of copper piece passivation technology.Existing copper material passivation technology is typically complex, and the present invention provides a kind of copper piece passivation technology, and this copper piece passivation technology is easy to implement, and has good passivation effect.The technical scheme that the present invention provides includes oil removing, pickling, passivation, surfacecti proteon and is dried these steps, and this programme is avoided using strong acid and strong base oil removing, uses sodium carbonate oil removing；Use Cr VI to carry out surface passivation, after passivation, use surface-protective agent that passivation layer is protected.Passivation technology provided by the present invention, it is not necessary to complicated equipment, operating process is simple, and the good passivation effect to copper piece.
Description
Technical field
The present invention relates to the passivation of copper, be specifically related to a kind of copper piece passivation technology.
Background technology
A lot of copper materials and copper material alloy itself, in alkalescence, easily lose electronics and aoxidize.Particularly copper material alloy itself
There is potential difference between various elements, thus in hygrothermal environment easily corrosive chameleon, therefore prevent the variable color from being after copper material passivation
One important procedure of surface passivation.Copper material passivating solution is applicable to all copper, copper alloy (pyrite, red copper, phosphor-copper, copper-nickel alloy, rose copper
Deng) Anti-tarnishing on various copper products surfaces processes, it is adaptable to inter process or final products Passivation Treatment.Make copper products easy to change,
The hang-up of anti-oxidation difficulty has been resolved, the copper products after Passivation Treatment outward appearance, color, gloss, size, do not affect conduction and
Welding above will not change these performances, and the performance after Copper treatment improves 5-30 times, the most exposed in atmosphere can long-term storage,
Different according to material, have some differences.(neutral salt spray testing standard, but because its material behavior is different, corrosion protection result or
Permitted can variant) strengthen workpiece service life.Existing copper material passivation technology is typically complex, and is badly in need of now a kind of letter
Single copper piece passivation technology.
Summary of the invention
It is an object of the invention to provide a kind of copper piece passivation technology, this copper piece passivation technology is easy to implement, and has good
Passivation effect.
As follows in order to reach the effect above technical scheme, a kind of copper piece passivation technology, comprise the following steps:
(1) workpiece oil removing: in container, is mixed into the proportioning preparation degreasing fluid of 3 kilograms of sodium carbonate with 10 kg of water；Copper piece is put into
Container, the temperature of degreasing fluid is maintained at 40-45 DEG C, and copper piece needs after putting into ceaselessly to stir, until copper piece surface and oil contaminant has removed
Till, after oil removing, workpiece is pulled out, with clear water, copper piece is rinsed.Surface degreasing can improve the surface matter of copper piece
Amount, raising resistance to corrosion.The most existing highly basic of sodium carbonate oil removing or strong acid oil removing mode is used to have environmental advantages, the most anti-
Should gently and the mottle that do not caused by strong acid and strong base of copper piece surface.During ceaselessly stir, copper piece surface can be promoted
Oils and fats is fully washed away.Preferably, after degreasing fluid put into by workpiece, being passed through high-temperature steam at container bottom, high-temperature steam can rise
To stirring and the effect of Heat preservation.
(2) pickling: under mark condition, with saturated concentrated nitric acid 1 kilogram, saturated concentrated hydrochloric acid 0.75 kilogram, saturated concentrated sulphuric acid 0.75
Kilogram, the proportioning preparating acid washing liquid of 10 kilograms of water；The copper piece completing oil removal treatment in step (1) is immersed pickle, keeps 55-
Within 65 seconds, pulling out, copper piece is clean by clear water shower immediately after pulling out；The main purpose of copper piece pickling is to remove in the course of processing (special
It is not intermediate annealing) oxide layer that produces, use mordant to remove this oxide layer, ready for further passivation.Due to
Oxide on surface is attached to copper piece surface, and it can not thoroughly be removed by common spray, it is preferred that use water under high pressure winding-up permissible
Effectively remove the attachment in copper piece.
(3) passivation: in container, according to Neutral potassium chromate 3 kilograms, 1 kilogram of sulphuric acid, the proportions passivating solution of 10 kilograms of water,
Putting in the passivating solution configured by copper piece complete for pickling in step (2), the soak at room temperature 55-65 second is pulled out, after copper piece is pulled out
Clean by clear water shower immediately；Neutral potassium chromate forms the oxide-film of a kind of chromium and copper on copper piece surface, and chromium compounds intensity is high, in oxidation
Film plays the effect of skeleton, thus passivating film is more stable.
(4) surfacecti proteon: in container, prepares surfacecti proteon according to the proportioning of surfacecti proteon liquid 3 kilograms, 10 kilograms of clear water
Liquid, in the copper piece being passivated in step (3) is placed on surfacecti proteon liquid, soak at room temperature is pulled out for 30 seconds；Owing to the chromium of Neutral potassium chromate is six
Valency, its chromium compounds water soluble formed, surfacecti proteon liquid plays its water miscible effect of reduction.
(5) dried: the copper piece drying that surfacecti proteon processes will be finished in step (4).
Passivation technology provided by the present invention, it is not necessary to complicated equipment, operating process is simple, and the passivation to copper piece is imitated
The best.
Detailed description of the invention:
Hereinafter the detailed description of the invention of the present invention is described in detail.It is embodied as it should be appreciated that described herein
Mode is merely to illustrate and explains the present invention, is not limited to the present invention.
A kind of copper piece passivation technology, it is characterised in that comprise the steps of
(1) workpiece oil removing: in container, is mixed into 3 kilograms of sodium carbonate then mix homogeneously with 10 kg of water and is configured to degreasing fluid, put
Enter pending copper piece, degreasing fluid is heated to 40-45 DEG C, then stir, till copper piece oil removing is complete.Also can be in container bottom
Portion is passed through steam, and steam can play stirring and the effect of heating.
(2) pickling: under mark condition, with saturated concentrated nitric acid 1 kilogram, saturated concentrated hydrochloric acid 0.75 kilogram, saturated concentrated sulphuric acid 0.75
Kilogram, the proportioning preparating acid washing liquid of 10 kilograms of water；The copper piece completing oil removal treatment in step (1) is immersed pickle, keeps 55-
Within 65 seconds, pulling out, copper piece is clean by clear water shower immediately after pulling out；In order to make the attachment on copper piece surface fully clean, it is possible to use
High pressure water cleaning.
(3) passivation: in container, according to Neutral potassium chromate 3 kilograms, 1 kilogram of sulphuric acid, the proportions passivating solution of 10 kilograms of water,
Putting in the passivating solution configured by copper piece complete for pickling in step (2), the soak at room temperature 55-65 second is pulled out, after copper piece is pulled out
Clean by clear water shower immediately.
(4) surfacecti proteon: in container, prepares surfacecti proteon according to the proportioning of surfacecti proteon liquid 3 kilograms, 10 kilograms of clear water
Liquid, in the copper piece being passivated in step (3) is placed on surfacecti proteon liquid, room temperature flushing is pulled out for 30 seconds；
(5) dried: the copper piece drying that surfacecti proteon processes will be finished in step (4).
Claims (3)
1. a copper piece passivation technology, it is characterised in that comprise the steps of
Workpiece oil removing: in container, is mixed into the proportioning preparation degreasing fluid of 3 kilograms of sodium carbonate with 10 kg of water；Copper piece is put into appearance
Device, the temperature of degreasing fluid is maintained at 40-45 DEG C, and copper piece needs after putting into ceaselessly to stir, until copper piece surface and oil contaminant has removed and has been
Only, after oil removing, workpiece is pulled out, with clear water, copper piece is rinsed；
Pickling: under mark condition, with saturated concentrated nitric acid 1 kilogram, saturated concentrated hydrochloric acid 0.75 kilogram, saturated concentrated sulphuric acid 0.75 kilogram, water
The proportioning preparating acid washing liquid of 10 kilograms；The copper piece completing oil removal treatment in step (1) is immersed pickle, keeps the 55-65 second to drag for
Going out, copper piece is clean by clear water shower immediately after pulling out；
Passivation: in container, according to Neutral potassium chromate 3 kilograms, 1 kilogram of sulphuric acid, the proportions passivating solution of 10 kilograms of water, by step
(2) copper piece that in, pickling is complete is put in the passivating solution configured, and the soak at room temperature 55-65 second is pulled out, and copper piece is used after pulling out immediately
Clear water shower is clean；
Surfacecti proteon: in container, prepares surfacecti proteon liquid according to the proportioning of surfacecti proteon liquid 3 kilograms, 10 kilograms of clear water, will step
Suddenly in the copper piece being passivated in (3) is placed on surfacecti proteon liquid, room temperature flushing is pulled out for 30 seconds；
Dried: the copper piece drying that surfacecti proteon processes will be finished in step (4).
2. a kind of copper piece passivation technology as claimed in claim 1, it is characterised in that in described step (1), workpiece is put into and removed
After fluid, it is passed through high-temperature steam at container bottom.
3. a kind of copper piece passivation technology as claimed in claim 1, it is characterised in that in described step (2), use water under high pressure
Copper piece is carried out shower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502810.6A CN106065479A (en) | 2016-06-29 | 2016-06-29 | A kind of copper piece passivation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502810.6A CN106065479A (en) | 2016-06-29 | 2016-06-29 | A kind of copper piece passivation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106065479A true CN106065479A (en) | 2016-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610502810.6A Pending CN106065479A (en) | 2016-06-29 | 2016-06-29 | A kind of copper piece passivation technology |
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| Country | Link |
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| CN (1) | CN106065479A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158067A (en) * | 2018-01-25 | 2019-08-23 | 安徽华晶微电子材料科技有限公司 | One Albatra metal purification process |
| CN110184613A (en) * | 2019-07-03 | 2019-08-30 | 惠州亿纬锂能股份有限公司 | The oxide layer minimizing technology and its auxiliary device of a kind of back welding needle |
| CN110904473A (en) * | 2019-12-04 | 2020-03-24 | 中山美力特环保科技有限公司 | 5G antenna environment-friendly copper plating process |
| CN110952099A (en) * | 2019-12-17 | 2020-04-03 | 九江德福科技股份有限公司 | Method for preventing end surface of copper foil from being oxidized |
| CN111155124A (en) * | 2020-01-06 | 2020-05-15 | 中航力源液压股份有限公司 | Copper alloy surface cleaning method |
| CN111455368A (en) * | 2020-04-30 | 2020-07-28 | 广州上仕工程管理有限公司 | Surface treatment method of corrosion-resistant alloy part |
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
Citations (3)
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| CN1037861A (en) * | 1988-04-28 | 1989-12-13 | 布德公司 | The method and apparatus of bonding FRP members |
| CN102706104A (en) * | 2012-05-30 | 2012-10-03 | 中宇建材集团有限公司 | Surface treatment method for copper product |
| CN104032314A (en) * | 2014-06-30 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Pickling and passivating treatment process of special-shaped steel tube |
-
2016
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Patent Citations (3)
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| CN1037861A (en) * | 1988-04-28 | 1989-12-13 | 布德公司 | The method and apparatus of bonding FRP members |
| CN102706104A (en) * | 2012-05-30 | 2012-10-03 | 中宇建材集团有限公司 | Surface treatment method for copper product |
| CN104032314A (en) * | 2014-06-30 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Pickling and passivating treatment process of special-shaped steel tube |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158067A (en) * | 2018-01-25 | 2019-08-23 | 安徽华晶微电子材料科技有限公司 | One Albatra metal purification process |
| CN110184613A (en) * | 2019-07-03 | 2019-08-30 | 惠州亿纬锂能股份有限公司 | The oxide layer minimizing technology and its auxiliary device of a kind of back welding needle |
| CN110904473A (en) * | 2019-12-04 | 2020-03-24 | 中山美力特环保科技有限公司 | 5G antenna environment-friendly copper plating process |
| CN110952099A (en) * | 2019-12-17 | 2020-04-03 | 九江德福科技股份有限公司 | Method for preventing end surface of copper foil from being oxidized |
| CN111155124A (en) * | 2020-01-06 | 2020-05-15 | 中航力源液压股份有限公司 | Copper alloy surface cleaning method |
| CN111155124B (en) * | 2020-01-06 | 2022-04-22 | 中航力源液压股份有限公司 | Copper alloy surface cleaning method |
| CN111455368A (en) * | 2020-04-30 | 2020-07-28 | 广州上仕工程管理有限公司 | Surface treatment method of corrosion-resistant alloy part |
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
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Application publication date: 20161102 |