CN108118314A - A kind of nickel plating process - Google Patents
A kind of nickel plating process Download PDFInfo
- Publication number
- CN108118314A CN108118314A CN201711102982.5A CN201711102982A CN108118314A CN 108118314 A CN108118314 A CN 108118314A CN 201711102982 A CN201711102982 A CN 201711102982A CN 108118314 A CN108118314 A CN 108118314A
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- China
- Prior art keywords
- nickel plating
- solution
- temperature
- closing
- plating 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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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
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1813—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by radiant energy
- C23C18/1817—Heat
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
The invention discloses a kind of nickel plating process, belong to metal working technical area.The nickel plating process includes：The surface for treating the part of nickel plating is pre-processed；Part is preheated；Part is immersed in nickel plating solution and carries out chemical nickel plating, the temperature after part preheating is identical with the temperature of nickel plating solution；Part is immersed in closing passivating dip and carries out closing Passivation Treatment, the temperature for closing passivating dip is identical with the temperature of nickel plating solution, by before chemical nickel plating is carried out, the surface for first treating the part of nickel plating is pre-processed, part is preheated again, the temperature of part is made to rise to identical with nickel plating solution, can so make the temperature of piece surface everywhere in nickel process identical, the stress in the coating of formation can so be reduced, be conducive to that coating is avoided to remove from piece surface.
Description
Technical field
The present invention relates to metal working technical area, more particularly to a kind of nickel plating process.
Background technology
Nickel plating is a kind of common metal surface processing technology, by that can improve the wear-resisting of part in piece surface nickel plating
Property and corrosion resistance, while the corrosion of part can also be delayed, so as to extend the service life of part.
There are mainly two types of the modes of nickel plating, and one kind is electronickelling, and one kind is chemical nickel plating, due to compared to electronickelling, changing
Learn nickel plating formed thickness of coating evenly, therefore chemical nickel plating have widely application.
When carrying out chemical nickel plating, part is immersed in nickel plating solution, uniform so as to gradually form thickness in piece surface
Coating, but for large-scale part, for example, diameter be more than 1000mm or quality be more than 100kg part, the coating of formation
It is bad to be easier to occur regional area combination power, cause coating from piece surface remove the problem of.
The content of the invention
In order to solve heavy parts chemical nickel plating, to be susceptible to regional area combination power bad, causes coating from piece surface
The problem of stripping, an embodiment of the present invention provides a kind of nickel plating process.The technical solution is as follows：
A kind of nickel plating process, the nickel plating process include：
The surface for treating the part of nickel plating is pre-processed；
The part is preheated；
The part is immersed in nickel plating solution and carries out chemical nickel plating, temperature and the nickel plating after the part preheating
The temperature of solution is identical；
The part is immersed in closing passivating dip and carries out closing Passivation Treatment, the temperature of the closing passivating dip
It is identical with the temperature of the nickel plating solution.
Optionally, it is described that the part is preheated, including：
There is provided a hot water storgae, the water temperature in the hot water storgae is 88~90 DEG C；
The part is soaked in the hot water storgae, continues 10~20min.
Optionally, the nickel plating solution is the mixed solution of nickel sulfate, sodium hypophosphite, sodium acetate and sodium citrate, wherein,
The concentration of nickel sulfate is 28~32g/L, and the concentration of sodium hypophosphite is 20~22g/L, and the concentration of sodium acetate is 14~16g/L, lemon
The concentration of lemon acid sodium is 4~6g/L.
Optionally, it is described the part is immersed in carry out closing Passivation Treatment in closing passivating dip before, it is described
Nickel plating process further includes：
It is 6~8 the part to be cleaned to the pH value of the piece surface.
Optionally, the closing passivating dip is potassium bichromate solution, and the concentration of potassium bichromate is 80~85g/L.
Optionally, the time of the closing Passivation Treatment is 3~5min.
Optionally, the surface of the part for treating nickel plating is pre-processed, including：
Oil removing is carried out to the surface of the part；
Part described in etch；
Activation process is carried out to the part.
Optionally, part described in the etch, including：
The part is soaked in etch solution, the etch solution is hydrochloric acid and the mixed solution of sulfuric acid.
Optionally, it is described that activation process is carried out to the part, including：
The part is soaked in activating solution, the activating solution is the sulfuric acid solution of mass concentration 5~10%.
Optionally, the time of the activation process is 30~60s.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：It is first right by before chemical nickel plating is carried out
It treats that the surface of the part of nickel plating is pre-processed, then part is preheated, the temperature of part is made to rise to and nickel plating solution phase
Together, can so make in nickel process that the temperature of part everywhere is all identical, can so reduce in the coating of formation should
Power is conducive to that coating is avoided to remove from piece surface.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of flow chart of nickel plating process provided in an embodiment of the present invention；
Fig. 2 is a kind of structure diagram of pulley；
Fig. 3 is the flow chart of another nickel plating process provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of flow chart of nickel plating process provided in an embodiment of the present invention, as shown in Figure 1, this method includes：
S11：The surface of part to be plated is pre-processed.
The part to be plated can be that diameter is more than the part of 1000mm or quality more than 100kg.
S12：Part is preheated.
S13：Part is immersed in nickel plating solution and carries out chemical nickel plating.
Wherein, the temperature after part preheating is identical with the temperature of nickel plating solution.
S14：Part is immersed in closing passivating dip and carries out closing Passivation Treatment.
Wherein, the temperature for closing passivating dip is identical with the temperature of nickel plating solution.
The embodiment of the present invention by the way that before chemical nickel plating is carried out, the surface for first treating the part of nickel plating is pre-processed, then
Part is preheated, the temperature of part is made to rise to identical with nickel plating solution, can so make part in nickel process
Temperature everywhere is all identical, can so reduce the stress in the coating of formation, is conducive to that coating is avoided to remove from piece surface.
Below exemplified by carrying out chemical nickel plating to the metallic sheave of an a diameter of 1200mm, to illustrate that the embodiment of the present invention carries
The nickel plating process of confession.It should be noted that nickel plating process provided in an embodiment of the present invention is applicable not only to pulley, it is applied also for
His diameter is more than 1000mm or quality is more than the part of 100kg.
Fig. 2 is a kind of structure diagram of pulley, as shown in Fig. 2, the pulley 10 is equipped with 4 lightening hole 10a.
Fig. 3 is the flow chart of another nickel plating process provided in an embodiment of the present invention, as shown in figure 3, this method includes：
S21：Oil removing is carried out to the surface of part.
During realization, degreaser oil removing may be employed.
Specifically, degreaser is held in degreasing tank, part is immersed in degreaser.
The surface of part can also smear wash by rag simultaneously, to accelerate the removal of greasy dirt.
Preferably, controlling the temperature of the degreaser in degreasing tank, degreaser can be faster at such a temperature for 50~70 DEG C
The greasy dirt of piece surface is dissolved.
Soaking time can be 10~20min, be removed with the greasy dirt for ensuring piece surface.Oil removing is completed, by part
It can be cleaned after being taken out from degreasing tank by clear water.
3~5 cleanings are carried out to piece surface by 70~100 DEG C of hot water, to ensure that greasy dirt is washed away, then pass through 3
~5 normal-temperature distilled water cleanings, and observe in water and whether also have oil stain to generate.Piece surface can be formed after room temperature is washed
Even moisture film then shows that greasy dirt all removes, can stop cleaning.
S22：Etch part to be plated.
The oxide-film of piece surface can be removed by etch, so as to improve the combination power of coating and piece surface, is avoided
The peeling of coating.
During realization, etch solution can be held in etch solution tank, part is immersed in etch solution.
Optionally, etch solution can be the mixed solution of hydrochloric acid and sulfuric acid.
During realization, etch solution may be employed pureness specifications and be mixed for commercially pure hydrochloric acid solution and commercially pure sulfuric acid solution
It closes.
Further, commercially pure 70~100mL of hydrochloric acid solution, commercially pure sulfuric acid solution are mixed in every 1L etch solution
100~135mL.
Preferably, the etch time can be 5~10min, and etch overlong time can cause the surface of part to be corroded, and soak
The erosion time is too short, then the oxide-film of piece surface may not removed completely.
Specifically, until the true qualities of metal being exposed with etch to piece surface, etch repeatedly and washing may be employed
Mode exposes the true qualities of metal with etch to piece surface.
Further, when being washed after completing etch, it is 6~8 that should clean to the pH of the water of piece surface, to ensure
The etch solution of piece surface is fully washed away.Piece surface can specifically be carried out 3~5 times by 70~100 DEG C of hot water
Cleaning, then cleaned by 3~5 normal-temperature distilled water.
S23：Activation process is carried out to part.
The sull on part surface layer can be fully removed by activation process, is conducive to enhance the knot of coating and part
With joint efforts.
During realization, activating solution can be held in liquid bath is activated, part is immersed in activating solution.
Wherein, activating solution can be the sulfuric acid solution of mass concentration 5~10%.
Activating solution may be employed pureness specifications and is formulated for the pure sulfuric acid solution of chemistry.
Further, the time of activation process can be 30~60s, and the time of activation process is too short, is difficult to ensure that part
The sull on surface layer is completely removed, and the overlong time of activation process can cause part larger corrosion.
Further, it can also be washed after activation process is completed, to clean the activating solution of piece surface, should be cleaned
PH to the water of piece surface is 6~8, is fully washed away with the activating solution for ensuring piece surface.70~100 can specifically be passed through
DEG C hot water 3~5 cleanings are carried out to piece surface, then pass through 3~5 normal-temperature distilled water and clean.
S24：Part is preheated.
Specifically, step S24 can include：
There is provided a hot water storgae, the water temperature in hot water storgae is 88~90 DEG C.
Part is soaked in hot water storgae, continues 10~20min.
Water temperature wherein in hot water storgae is equal with the temperature of the nickel plating solution in subsequent step, by the way that part is immersed in heat
Preheating can be such that the temperature on part everywhere all rises to equal with nickel plating solution in water, can so make to be formed in subsequent step
Coating in stress distribution evenly, be conducive to avoid coating to be removed with part.Soaking time is too short, is difficult to ensure that part
Temperature everywhere all rise to it is equal with nickel plating solution, overlong time can then increase it is time-consuming, reduce production efficiency.
Preferably, the water in hot water storgae is deionized water, and the ionic impurity in deionized water is few, can be to avoid foreign ion
Influence to nickel plating.
S25：Chemical nickel plating.
Specifically, part is immersed in nickel plating solution and carries out chemical nickel plating, to form one layer uniformly in piece surface
Coating.
Wherein, after step S24, the temperature after part preheating is identical with the temperature of nickel plating solution, can make subsequent step
Stress distribution in the coating of middle formation evenly, is conducive to that coating is avoided to remove with part.
Illustratively, when the soaking time of pulley can be 4 small.Specific soaking time can be according to required coating
Thickness is set, and for same nickel plating solution, thickness of coating if desired is thicker, then soaking time is longer.
Optionally, nickel plating solution can be the mixed solution of nickel sulfate, sodium hypophosphite, sodium acetate and sodium citrate, wherein,
The concentration of nickel sulfate is 28~32g/L, and the concentration of sodium hypophosphite is 20~22g/L, and the concentration of sodium acetate is 14~16g/L, lemon
The concentration of lemon acid sodium is 4~6g/L.The pH value of nickel plating solution can be between 4.6~4.8.Using the nickel plating solution shape of the component
Into coating have preferable appearance, quality of coating is preferable, and the combination power of coating and part is larger, can meet the requirement of part.
Nickel sulfate, sodium hypophosphite, sodium acetate and sodium citrate configuration may be employed in nickel plating solution, and purity specifically may be employed
Specification is commercially pure nickel sulfate, pureness specifications are the pure sodium hypophosphite of chemistry, pureness specifications are the pure sodium acetate of chemistry and pure
Metric lattice are configured for the pure sodium citrate of chemistry.
S26：Clean part.
Specifically, it is 6~8 part to be cleaned to the pH value of piece surface, to remove the nickel plating solution of piece surface.
Specifically can 3~5 cleanings carry out piece surface by 70~100 DEG C of hot water, then it is clear by 3~5 normal-temperature distilled water
It washes.
S27：Close Passivation Treatment.
Specifically, part can be immersed in closing passivating dip and carries out closing Passivation Treatment.
Wherein, the temperature for closing passivating dip can be identical with the temperature of nickel plating solution, is conducive to improve at closing passivation
The effect of reason.
During realization, closing passivating dip can be potassium bichromate solution, and the concentration of potassium bichromate can be 80~85g/
L.Potassium bichromate solution can be configured by pureness specifications for the potassium bichromate of chemical grade.
The time for closing Passivation Treatment can be 3~5min.The anticorrosive of part can be improved by closing Passivation Treatment
Ability.
Further, can be washed after completing to close Passivation Treatment, it is molten to clean the closing of piece surface passivation
Liquid, it is 6~8 that should clean to the pH of the water of piece surface, is fully washed away with the closing passivating dip for ensuring piece surface.Specifically
Can 3~5 cleanings carry out piece surface by 70~100 DEG C of hot water, then be cleaned by 3~5 normal-temperature distilled water.
Part after nickel plating is obtained after completing closing Passivation Treatment.By before chemical nickel plating is carried out, first to be plated
The surface of the part of nickel is pre-processed, then part is preheated, make part temperature rise to it is identical with nickel plating solution, this
Sample can make the temperature of part everywhere in nickel process all identical, can so reduce the stress in the coating of formation, have
It is removed beneficial to coating is avoided from piece surface.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of nickel plating process, which is characterized in that the nickel plating process includes：
The surface for treating the part of nickel plating is pre-processed；
The part is preheated；
The part is immersed in nickel plating solution and carries out chemical nickel plating, temperature and the nickel plating solution after the part preheating
Temperature it is identical；
The part is immersed in closing passivating dip and carries out closing Passivation Treatment, the temperature of the closing passivating dip and institute
The temperature for stating nickel plating solution is identical.
2. nickel plating process according to claim 1, which is characterized in that it is described that the part is preheated, including：
There is provided a hot water storgae, the water temperature in the hot water storgae is 88~90 DEG C；
The part is soaked in the hot water storgae, continues 10~20min.
3. nickel plating process according to claim 1, which is characterized in that the nickel plating solution is nickel sulfate, sodium hypophosphite, vinegar
The mixed solution of sour sodium and sodium citrate, wherein, the concentration of nickel sulfate is 28~32g/L, the concentration of sodium hypophosphite for 20~
22g/L, the concentration of sodium acetate is 14~16g/L, and the concentration of sodium citrate is 4~6g/L.
4. according to claims 1 to 3 any one of them nickel plating process, which is characterized in that be immersed in the part described
Before carrying out closing Passivation Treatment in closing passivating dip, the nickel plating process further includes：
It is 6~8 the part to be cleaned to the pH value of the piece surface.
5. according to claims 1 to 3 any one of them nickel plating process, which is characterized in that the closing passivating dip is attached most importance to chromium
Sour potassium solution, and the concentration of potassium bichromate is 80~85g/L.
6. nickel plating process according to claim 5, which is characterized in that the time of the closing Passivation Treatment is 3~5min.
7. according to claims 1 to 3 any one of them nickel plating process, which is characterized in that the table of the part for treating nickel plating
Face is pre-processed, including：
Oil removing is carried out to the surface of the part；
Part described in etch；
Activation process is carried out to the part.
8. nickel plating process according to claim 7, which is characterized in that part described in the etch, including：
The part is soaked in etch solution, the etch solution is hydrochloric acid and the mixed solution of sulfuric acid.
9. nickel plating process according to claim 7, which is characterized in that it is described that activation process is carried out to the part, including：
The part is soaked in activating solution, the activating solution is the sulfuric acid solution of mass concentration 5~10%.
10. nickel plating process according to claim 9, which is characterized in that the time of the activation process is 30~60s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102982.5A CN108118314A (en) | 2017-11-10 | 2017-11-10 | A kind of nickel plating process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102982.5A CN108118314A (en) | 2017-11-10 | 2017-11-10 | A kind of nickel plating process |
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| CN108118314A true CN108118314A (en) | 2018-06-05 |
Family
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| CN201711102982.5A Pending CN108118314A (en) | 2017-11-10 | 2017-11-10 | A kind of nickel plating process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074246A (en) * | 2019-12-31 | 2020-04-28 | 东台市展新不锈钢紧固件制造有限公司 | Nickel plating process for stainless steel fastener |
| CN111074259A (en) * | 2018-10-19 | 2020-04-28 | 沧州华润化工有限公司 | Metal plate surface passivation treatment method |
| CN111101182A (en) * | 2020-03-23 | 2020-05-05 | 江苏聚成金刚石科技有限公司 | Method for improving sanding uniformity of plated diamond in online saw production process |
| CN113718248A (en) * | 2021-09-01 | 2021-11-30 | 筑磊半导体技术(上海)有限公司 | Cleaning method of semiconductor process pipeline |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074259A (en) * | 2018-10-19 | 2020-04-28 | 沧州华润化工有限公司 | Metal plate surface passivation treatment method |
| CN111074246A (en) * | 2019-12-31 | 2020-04-28 | 东台市展新不锈钢紧固件制造有限公司 | Nickel plating process for stainless steel fastener |
| CN111101182A (en) * | 2020-03-23 | 2020-05-05 | 江苏聚成金刚石科技有限公司 | Method for improving sanding uniformity of plated diamond in online saw production process |
| CN113718248A (en) * | 2021-09-01 | 2021-11-30 | 筑磊半导体技术(上海)有限公司 | Cleaning method of semiconductor process pipeline |
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