CN107299365A - A kind of weldment plates post-passivation process - Google Patents
A kind of weldment plates post-passivation process Download PDFInfo
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- CN107299365A CN107299365A CN201710517391.8A CN201710517391A CN107299365A CN 107299365 A CN107299365 A CN 107299365A CN 201710517391 A CN201710517391 A CN 201710517391A CN 107299365 A CN107299365 A CN 107299365A
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- weldment
- time
- washing
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- normal temperature
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/52—After-treatment of electroplated surfaces by brightening or burnishing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
A kind of present invention weldment plating post-passivation process, including 1), weldment be put into plating solution carry out zinc-plated work, the weldment after zinc is washed under normal temperature state, 4）, the weldment after second washes be put into the ultrasonic technique groove that temperature is 70 DEG C carry out hot water wash；5）, will in the middle weldment light extraction technology groove after ultrasonic heat is washed complete light extraction process, 6）, the weldment after light extraction is handled washed under normal temperature state, 7）, by step 6）The middle weldment after washing, which is put into deactivation slot, to be handled, and 10）, will passivation weldment is carried out under normal temperature state three times wash.Optimization technological process of the present invention, reduces process condition, and acid, the aqueous slkali for going out residual using the principle reinforcement workpiece gap of vibration of ultrasonic wave quickly flow out, ultrasonic technique groove is heated up to 70 degree, it is more obvious using hot water cleaning performance, equipment usage amount is reduced, the consumption of water resource is reduced.
Description
Technical field
The present invention relates to weldment plating post-passivation technology field, more particularly to a kind of weldment plating post-passivation technique side
Method.
Background technology
According to the demand of plating auto parts machinery, there is stamping parts in plating processing, need the workpiece of welding, production originally
Production efficiency is low, and product fraction defective reaches 40%, and operation is difficult, the high shortcoming of maintenance cost cost, it is impossible to meet production need
Ask；
Then, in view of this inventor, in order to increase production capacity, improves me and takes charge of the core competitiveness of product, spy's project verification research and development welding
The zinc-plated handling process technology of part, traditional handicraft is replaced with new technology, with energy-saving consumption-reducing, reduces cost, improves product quality,
So as to improve core competitiveness of the company in the same industry.
The content of the invention
Post-passivation process is plated it is an object of the invention to provide a kind of weldment, to solve to carry in above-mentioned background technology
The original production technology production efficiency gone out is low, and product fraction defective reaches 40%, and operation is difficult, the high shortcoming of maintenance cost cost,
Production requirement problem can not be met.
Weldment of the present invention plates the purpose and effect of post-passivation process, is reached by technological means in detail below：
A kind of weldment plates post-passivation process, and described weldment plating post-passivation process includes：
1), weldment is put into plating solution and carries out zinc-plated work, temperature is：10~45 DEG C, the time is：40~60min, plating solution
Formula is as follows：
Zinc oxide（30~40g/L）, sodium hydroxide（220~230g/L）, DE additives（5mL/L）, mixing brightener（0.3mL/
L）, cumarin（0.5g/L）
2）, by step 1）In it is zinc-plated after weldment washed under normal temperature state, washing time is：2 minutes；
3）, by step 2）The middle weldment after first time washes carries out second washing under normal temperature state, and the time is：2
Minute；
4）, by step 3）The middle weldment after second is washed is put into the ultrasonic technique groove that temperature is 70 DEG C and carries out heat
Washing；
5）, by step 4）Completed in the middle weldment light extraction technology groove after ultrasonic heat is washed in light extraction process, light output groove
Formula be:
The industrial concentrated sulfuric acid（350~450mL/L）、HNO3（30~50mL/L）、HCl（2~5mL/L）, brightener（10~20mL/
L）, water（Add to 1000mL）
6）, by step 5）The middle weldment after light extraction is handled is washed under normal temperature state, and washing time is：2 minutes；
7）, by step 6）The middle weldment after washing, which is put into deactivation slot, to be handled, and temperature is：Room temperature, time is
10~20s, passivation is：
CrO3（99.5%）80~100g/L, H2SO4（98%）10~30g/L
8）, by step 7）Weldment after middle passivation carries out first time washing under normal temperature state, and washing time is：2 minutes；
9）, by step 8）In it is zinc-plated after weldment second carried out under normal temperature state wash, washing time is：2 minutes；
10）, by step 9）The middle weldment after second washes carries out third time washing under normal temperature state, and the time is：2
Minute.
Further, the step 5）Middle temperature is 5~45 DEG C, and the time is 0.5~2min.
Further, the step 2）, step 3）, step 8）, step 9）, step 10）In use clean water.
Further, the step 10）Middle washing uses any place of acid litmus paper flushing surface after terminating, make pH value
Between 6.5~7.5.
With existing structure in comparison, the invention has the advantages that：
1. optimization technological process, reduces process condition.
Quickly flowed out 2. strengthening workpiece gap using the principle of vibration of ultrasonic wave and going out the sour of residual, aqueous slkali.
3. ultrasonic technique groove is heated up to 70 degree, more obvious using hot water cleaning performance.
4. equipment usage amount can be reduced, the consumption of water resource is reduced, operating efficiency is improved.
Brief description of the drawings
Fig. 1 is conventional process flow block diagram；
Fig. 2 is the process flow diagram after present invention improvement.
Embodiment
Below, embodiments of the invention are will be explained in, the example is shown in the accompanying drawings and the description below.Although will combine
The exemplary embodiment description present invention, it is to be understood that the description is not really wanted to limit the invention to the exemplary implementation
Example.On the contrary, the present invention will not only cover the exemplary embodiment, but also cover various replacements, change, it is equivalent and
Other embodiment, it can be included in the spirit and scope of the present invention that appended claims are limited.
A kind of weldment plates post-passivation process, it is characterised in that：Described weldment plating post-passivation process bag
Include：
1), weldment is put into plating solution and carries out zinc-plated work, temperature is：10~45 DEG C, the time is：40~60min, plating solution
Formula is as follows：
Zinc oxide（30~40g/L）, sodium hydroxide（220~230g/L）, DE additives（5mL/L）, mixing brightener（0.3mL/
L）, cumarin（0.5g/L）
2）, by step 1）In it is zinc-plated after weldment washed under normal temperature state, washing time is：2 minutes；
3）, by step 2）The middle weldment after first time washes carries out second washing under normal temperature state, and the time is：2
Minute；
4）, by step 3）The middle weldment after second is washed is put into the ultrasonic technique groove that temperature is 70 DEG C and carries out heat
Washing；
5）, by step 4）Completed in the middle weldment light extraction technology groove after ultrasonic heat is washed in light extraction process, light output groove
Formula be:
The industrial concentrated sulfuric acid（350~450mL/L）、HNO3（30~50mL/L）、HCl（2~5mL/L）, brightener（10~20mL/
L）, water（Add to 1000mL）
6）, by step 5）The middle weldment after light extraction is handled is washed under normal temperature state, and washing time is：2 minutes；
7）, by step 6）The middle weldment after washing, which is put into deactivation slot, to be handled, and temperature is：Room temperature, time is
10~20s, passivation is：
CrO3（99.5%）80~100g/L, H2SO4（98%）10~30g/L
8）, by step 7）Weldment after middle passivation carries out first time washing under normal temperature state, and washing time is：2 minutes；
9）, by step 8）In it is zinc-plated after weldment second carried out under normal temperature state wash, washing time is：2 minutes；
10）, by step 9）The middle weldment after second washes carries out third time washing under normal temperature state, and the time is：2
Minute.
Weldment as described above plates the preferred embodiment of post-passivation process, wherein, step 5）Middle temperature be 5~
45 DEG C, the time is 0.5~2min.
Weldment as described above plates the preferred embodiment of post-passivation process, wherein, step 2）, step 3）, step
Rapid 8）, step 9）, step 10）In use clean water, increase washing effect；
Weldment as described above plates the preferred embodiment of post-passivation process, wherein, step 10）Middle washing is adopted after terminating
With any place of acid litmus paper flushing surface, make pH value between 6.5~7.5.
In summary, although the present invention is described in detail with reference to the foregoing embodiments, for the technology of this area
For personnel, it can still modify to the technical scheme described in foregoing embodiments, or to which part technology
Feature carries out equivalent substitution, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc.,
It should be included within protection scope of the present invention.
Claims (4)
1. a kind of weldment plates post-passivation process, it is characterised in that：Described weldment plating post-passivation process includes
Have：
1), weldment is put into plating solution and carries out zinc-plated work, temperature is：10~45 DEG C, the time is：40~60min, plating solution
Formula is as follows：
Zinc oxide（30~40g/L）, sodium hydroxide（220~230g/L）, DE additives（5mL/L）, mixing brightener（0.3mL/
L）, cumarin（0.5g/L）
2）, by step 1）In it is zinc-plated after weldment washed under normal temperature state, washing time is：2 minutes；
3）, by step 2）The middle weldment after first time washes carries out second washing under normal temperature state, and the time is：2
Minute；
4）, by step 3）The middle weldment after second is washed is put into the ultrasonic technique groove that temperature is 70 DEG C and carries out heat
Washing；
5）, by step 4）Completed in the middle weldment light extraction technology groove after ultrasonic heat is washed in light extraction process, light output groove
Formula be:
The industrial concentrated sulfuric acid（350~450mL/L）、HNO3（30~50mL/L）、HCl（2~5mL/L）, brightener（10~20mL/
L）, water（Add to 1000mL）
6）, by step 5）The middle weldment after light extraction is handled is washed under normal temperature state, and washing time is：2 minutes；
7）, by step 6）The middle weldment after washing, which is put into deactivation slot, to be handled, and temperature is：Room temperature, time is
10~20s, passivation is：
CrO3（99.5%）80~100g/L, H2SO4（98%）10~30g/L
8）, by step 7）Weldment after middle passivation carries out first time washing under normal temperature state, and washing time is：2 minutes；
9）, by step 8）In it is zinc-plated after weldment second carried out under normal temperature state wash, washing time is：2 minutes；
10）, by step 9）The middle weldment after second washes carries out third time washing under normal temperature state, and the time is：2
Minute.
2. weldment according to claim 1 plates post-passivation process, it is characterised in that：The step 5）Middle temperature is
5~45 DEG C, the time is 0.5~2min.
3. weldment according to claim 1 plates post-passivation process, it is characterised in that：The step 2）, step 3）、
Step 8）, step 9）, step 10）In use clean water.
4. weldment according to claim 1 plates post-passivation process, it is characterised in that：The step 10）Middle washing
Using any place of acid litmus paper flushing surface after end, make pH value between 6.5~7.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517391.8A CN107299365A (en) | 2017-06-29 | 2017-06-29 | A kind of weldment plates post-passivation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517391.8A CN107299365A (en) | 2017-06-29 | 2017-06-29 | A kind of weldment plates post-passivation process |
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| Publication Number | Publication Date |
|---|---|
| CN107299365A true CN107299365A (en) | 2017-10-27 |
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| CN201710517391.8A Withdrawn CN107299365A (en) | 2017-06-29 | 2017-06-29 | A kind of weldment plates post-passivation process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560042A (en) * | 2018-05-15 | 2018-09-21 | 柳州市旭平首饰有限公司 | Copper ornament electroplating cleaning production line and copper ornament cleaning method |
| CN110438533A (en) * | 2019-08-15 | 2019-11-12 | 贵州永红航空机械有限责任公司 | Prevent the electrogalvanizing method of zinc coating blackening at the soldering part gap with gap |
| CN110575994A (en) * | 2019-10-12 | 2019-12-17 | 江苏康达顺精密汽车附件制造有限公司 | Hydraulic part cleaning process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560042A (en) * | 2018-05-15 | 2018-09-21 | 柳州市旭平首饰有限公司 | Copper ornament electroplating cleaning production line and copper ornament cleaning method |
| CN110438533A (en) * | 2019-08-15 | 2019-11-12 | 贵州永红航空机械有限责任公司 | Prevent the electrogalvanizing method of zinc coating blackening at the soldering part gap with gap |
| CN110575994A (en) * | 2019-10-12 | 2019-12-17 | 江苏康达顺精密汽车附件制造有限公司 | Hydraulic part cleaning process |
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