CN107245736A - A kind of auto parts and components electroplating technology - Google Patents
A kind of auto parts and components electroplating technology Download PDFInfo
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- CN107245736A CN107245736A CN201710556038.0A CN201710556038A CN107245736A CN 107245736 A CN107245736 A CN 107245736A CN 201710556038 A CN201710556038 A CN 201710556038A CN 107245736 A CN107245736 A CN 107245736A
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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
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
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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
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
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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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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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
- 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 Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
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Abstract
The present invention relates to a kind of auto parts and components electroplating technology, the electroplating technology comprises the following steps：（1）Electrochemical deoiling；（2）Anode electrolysis；（3）Pickling；（4）It is pre- zinc-plated；（5）Pickling strip；（6）Ultrasonic oil removal；（7）Secondary anode is electrolysed；（8）Activation；（9）Plate acidic zinc；（10）Alkali cleaning；（11）Light extraction；（12）Passivation；（13）Closing：Solid content is used to be closed for 2.0~2.5g/L plate close agent 300WL7 the auto parts and components after passivation；（14）Wind is cut：Overall purging will be carried out first in auto parts and components feeding wind cutting apparatus after closing, then product is purged one by one from top to bottom, and overall purging is finally carried out again；（15）Drying.The advantage of the invention is that：By adjusting the concentration and closure temperature of sealer, and improve wind butt formula, to slow down the residual of sealer, so as to improve product appearance, can also ensure the smooth docking of screwed hole part.
Description
Technical field
The invention belongs to electroplating technology field, more particularly to a kind of auto parts and components electroplating technology.
Background technology
Plating is exactly the process for plating the other metal or alloy of a thin layer on substrate material surface using electrolysis principle, is
Make the technique of the surface attachment layer of metal film of metal or other materials product using electrolysis prevents metal oxygen so as to play
Change（Such as corrosion）, improve wearability, electric conductivity, reflective, corrosion resistance（Sour sulphur copper etc.）And the effect such as having improved aesthetic appearance.
, it is necessary to be electroplated to auto parts and components in the production of auto parts and components.Current plating species is a lot, including
Nickel plating, copper facing, zinc-plated etc., also have some alloy platings, such as Zinc-nickel alloy electroplating.As positive polarity protective coating, zinc-nickel is closed
Gold utensil has more preferable corrosivity under same thickness, and it can also provide single coating unexistent characteristic for user.
Electroplate → go out for upper extension → preceding processing → activation → in current auto parts and components Zn-ni Alloy Plating flow
Light → passivation → closing → wind is cut → dries → descends to hang, in this process, can be in piece surface using the sealer of high concentration
Accelerate film forming, while higher closure temperature can accelerate film forming speed, and then cause sealer to residue in product surface；In addition,
Wind is cut typically to be cut using once overall wind, but is cut not thoroughly using the wind butt formula wind, is further resulted in the residual of sealer, is entered
And product appearance is influenceed, and the residual of screwed hole inner sealing agent can also influence the docking of part.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of auto parts and components electroplating technology, by adjusting the dense of sealer
Degree and closure temperature, and improve wind butt formula, to slow down the residual of sealer, so as to improve product appearance, it can also ensure spiral shell
The smooth docking of pit part.
In order to solve the above technical problems, the technical scheme is that：A kind of auto parts and components electroplating technology, its innovative point
It is：The electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Auto parts and components to be electroplated are subjected to electrochemical deoiling, the electrochemical deoiling use concentration for 85~
115g/L HMC-02A degreasing powders and concentration is 6~10ml/L HMC-02B degreasers, except oil temperature is 65~75 DEG C, oil removing
8~15min of time；
（2）Anode electrolysis：An anode electrolysis will be carried out in auto parts and components feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 4~8ml/L for 60~80g/L HMC-02A degreasing powders and concentration are used, at 65~75 DEG C
And 2.0~6.0A/dm2Under conditions of carry out 140~600s of electrolysis, be then placed in rinse bath and floated with ＞ 100L/h water-carrying capacity
Wash 5~20s；
（3）Pickling：Auto parts and components after anode electrolysis are sent into the chlorohydric acid pickling pond that concentration is 160~260ml/L,
160~600s of pickling, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity at room temperature；
（4）It is pre- zinc-plated：Auto parts and components after pickling are sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 10~30g/L zinc chloride, the mixed liquor of 125~175g/L potassium chloride and 25~35g/L boric acid, preplating
Liquid pH value is controlled between 4.9~5.6, and in 20~35 DEG C of temperature and 1.0~3.0A/dm of current density2Under conditions of preplating 6
~15min；
（5）Pickling strip：By it is pre- it is zinc-plated after auto parts and components feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 160~260ml/L hydrochloric acid, and 3~6min of pickling at room temperature is then placed in rinse bath with ＞ 100L/h's
Water-carrying capacity rinses 5~20s；
（6）Ultrasonic oil removal：Surface of automobile part after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
With the HMC-02A degreasing powders that concentration is 30~60g/L, except oil temperature is 45~55 DEG C, 3~6min of oil removing time；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in auto parts and components feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 6~10ml/L for 60~80g/L HMC-02 degreasing powders A and concentration, in temperature
50~70 DEG C and 1.0~5.0A/dm of current density2Under conditions of carry out 180~360s of electrolysis, be then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（8）Activation：Auto parts and components feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is 60~140ml/L of concentration hydrochloric acid, at room temperature 15~30s of soak time, is then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（9）The acid zinc-nickel of plating：Auto parts and components feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 30~40g/L nickel chloride, 50~60g/L zinc chloride, 25~35g/L boric acid, electroplate liquid
28~36 DEG C of temperature, pH value 5.1~5.6,35~50min of electroplating time, current density 0.5-3A/dm2, it is then placed in rinse bath
The interior water-carrying capacity with ＞ 100L/h rinses 15~30s；
（10）Alkali cleaning：The auto parts and components after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 15~40g/L, in room
Lower 25~the 45s of alkali cleaning of temperature, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in auto parts and components feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
The hydrochloric acid that solution in the dark film layer of remained on surface, the light output groove is 200~300ml/L, light extraction temperature is room temperature, pH value
1.2~2.0,10~20s of light extraction time, are then placed in rinse bath and rinse 5~20s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Auto parts and components feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 60~100ml/L for concentration, passivation temperature is 25~31 DEG C, and pH value is 2.0~2.6, passivation time
For 45~55s, it is then placed in rinse bath and 5~20s is rinsed with ＞ 100L/h water-carrying capacity；
（13）Closing：It is 2.0~2.5g/L plate close agent 300WL7 in vapour that auto parts and components after passivation are used into solid content
Car component surface forms a kind of fine and close diaphragm, and the closure temperature is 30~40 DEG C, and pH value is 10.0~12.0, closing
Time is 95~110s；
（14）Wind is cut：It will carry out 2~4min of overall purging in auto parts and components feeding wind cutting apparatus after closing first, then from upper
Product is purged one by one under, 4~10min of time, and 2~4min of overall purging is finally carried out again；
（15）Drying：Auto parts and components feeding drying oven after wind is cut carries out drying and processing, and 90~100 DEG C of drying temperature is dried
Dry 18~30min of the time.
Further, the HMC-02A degreasing powders, HMC-02B degreasers and passivator 3098HC find pleasure in by wheat dolantin and thought
There is provided.
Further, the plate close agent 300WL7 is provided by Atotech (China) Chemical Co., Ltd..
The advantage of the invention is that：
（1）Auto parts and components electroplating technology of the present invention, wherein, will be original in order to avoid sealer accelerates film forming in piece surface
Sealer solid content is reduced to 2.0~2.5g/L by 2.3~2.9g/L, meanwhile, closure temperature is also reduced to 30 by 48~52 DEG C
~40 DEG C, and then to slow down the residual of sealer；
（2）Auto parts and components electroplating technology of the present invention, wind butt formula plays an important role to sealer residual, and wind, which is cut, can thoroughly not lead
Cause sealer residual, when wind of the present invention is cut first integrally purging on one side, then product enters sector-style and cut one by one from top to bottom, again finally
Again it is overall to purge one time；By this wind butt formula can wind cut thoroughly, then do not have sealer residual；
（3）Auto parts and components electroplating technology of the present invention, by adjusting the concentration and closure temperature of sealer, and improves wind butt
Formula, to slow down the residual of sealer, so as to improve product appearance, can also ensure the smooth docking of screwed hole part.
Embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
HMC-02A in following the auto parts and components electroplating technologies of embodiment 1~3 and comparative example auto parts and components electroplating technology
Degreasing powder, HMC-02B degreasers and passivator 3098HC think to provide by wheat dolantin pleasure, and 300WL7 is by Atotech for plate close agent
(China) Chemical Co., Ltd. provides.
Auto parts and components in following embodiments and comparative example enter coating automobile parts Co., Ltd for Ningbo Hua Xiang
Produce Ford Lincoln's automobile D544 automobile instrument panels.
Embodiment 1
The present embodiment automobile instrument panel electroplating technology, the electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Automobile instrument panel to be electroplated is subjected to electrochemical deoiling, the electrochemical deoiling uses concentration for 85g/L
HMC-02A degreasing powders and concentration be 6ml/L HMC-02B degreasers, except oil temperature be 65 DEG C, oil removing time 15min；
（2）Anode electrolysis：An anode electrolysis will be carried out in automobile instrument panel feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 4ml/L for 60g/L HMC-02A degreasing powders and concentration are used, at 65 DEG C and 2.0A/dm2's
Under the conditions of carry out electrolysis 600s, be then placed in rinse bath and 5s rinsed with ＞ 100L/h water-carrying capacity；
（3）Pickling：Automobile instrument panel after anode electrolysis is sent into the chlorohydric acid pickling pond that concentration is 160ml/L, in room
The lower pickling 600s of temperature, is then placed in rinse bath and rinses 5s with ＞ 100L/h water-carrying capacity；
（4）It is pre- zinc-plated：Automobile instrument panel after pickling is sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 10g/L zinc chloride, the mixed liquor of 125g/L potassium chloride and 25g/L boric acid, the control of pre-plating solution pH value exists
5.6, and in 20 DEG C of temperature and current density 1.0A/dm2Under conditions of preplating 15min；
（5）Pickling strip：By it is pre- it is zinc-plated after automobile instrument panel feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 160ml/L hydrochloric acid, and pickling 6min at room temperature is then placed in rinse bath and floated with ＞ 100L/h water-carrying capacity
Wash 5s；
（6）Ultrasonic oil removal：Automobile instrument panel surface after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
The HMC-02A degreasing powders for being 30g/L with concentration, except oil temperature is 45 DEG C, oil removing time 6min；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in automobile instrument panel feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 6ml/L for 60g/L HMC-02A degreasing powders and concentration, in temperature 50 C and electricity
Current density 1.0A/dm2Under conditions of carry out electrolysis 360s, be then placed in rinse bath and 5s rinsed with ＞ 100L/h water-carrying capacity；
（8）Activation：Automobile instrument panel feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is concentration 60ml/L hydrochloric acid, at room temperature soak time 30s, is then placed in rinse bath with ＞ 100L/h current
Amount rinsing 5s；
（9）The acid zinc-nickel of plating：Automobile instrument panel feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 30g/L nickel chloride, 50g/L zinc chloride, 25g/L boric acid, 28 DEG C of temperature of electroplating solution, pH value
5.6, electroplating time 50min, current density 0.5A/dm2, it is then placed in rinse bath and 15s is rinsed with ＞ 100L/h water-carrying capacity；
（10）Alkali cleaning：The automobile instrument panel after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 15g/L, at room temperature
Alkali cleaning 45s, is then placed in rinse bath and rinses 5s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in automobile instrument panel feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
Solution in the dark film layer of remained on surface, the light output groove is 200ml/L hydrochloric acid, and light extraction temperature is room temperature, pH value 2.0,
Light extraction time 20s, is then placed in rinse bath and rinses 5s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Automobile instrument panel feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 60ml/L for concentration, passivation temperature is 25 DEG C, and pH value is 2.6, and passivation time is 55s, is then placed in
5s is rinsed with ＞ 100L/h water-carrying capacity in rinse bath；
（13）Closing：It is 2.0g/L plate close agent 300WL7 in zero, automobile that automobile instrument panel after passivation is used into solid content
Part surface forms a kind of fine and close diaphragm, and the closure temperature is 30 DEG C, and pH value is 10.0, and off-period is 110s；
（14）Wind is cut：Overall purging 2min will be carried out first in automobile instrument panel feeding wind cutting apparatus after closing, then from up to
Under one by one product purged, time 4min finally carries out overall purging 2min again；
（15）Drying：Automobile instrument panel feeding drying oven after wind is cut carries out drying and processing, 90 DEG C of drying temperature, drying time
30min。
Embodiment 2
The present embodiment automobile instrument panel electroplating technology, the electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Automobile instrument panel to be electroplated is subjected to electrochemical deoiling, the electrochemical deoiling uses concentration for 115g/L
HMC-02A degreasing powders and concentration be 10ml/L HMC-02B degreasers, except oil temperature be 75 DEG C, oil removing time 8min；
（2）Anode electrolysis：An anode electrolysis will be carried out in automobile instrument panel feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 8ml/L for 80g/L HMC-02A degreasing powders and concentration are used, at 75 DEG C and 2.0A/dm2's
Under the conditions of carry out electrolysis 140s, be then placed in rinse bath and 20s rinsed with ＞ 100L/h water-carrying capacity；
（3）Pickling：Automobile instrument panel after anode electrolysis is sent into the chlorohydric acid pickling pond that concentration is 260ml/L, in room
The lower pickling 160s of temperature, is then placed in rinse bath and rinses 20s with ＞ 100L/h water-carrying capacity；
（4）It is pre- zinc-plated：Automobile instrument panel after pickling is sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 30g/L zinc chloride, the mixed liquor of 175g/L potassium chloride and 35g/L boric acid, the control of pre-plating solution pH value exists
4.9, and in 35 DEG C of temperature and current density 3.0A/dm2Under conditions of preplating 6min；
（5）Pickling strip：By it is pre- it is zinc-plated after automobile instrument panel feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 260ml/L hydrochloric acid, and pickling 3min at room temperature is then placed in rinse bath and floated with ＞ 100L/h water-carrying capacity
Wash 20s；
（6）Ultrasonic oil removal：Automobile instrument panel surface after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
The HMC-02A degreasing powders for being 60g/L with concentration, except oil temperature is 55 DEG C, oil removing time 3min；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in automobile instrument panel feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 10ml/L for 80g/L HMC-02A degreasing powders and concentration, in temperature 70 C and electricity
Current density 1.0A/dm2Under conditions of carry out electrolysis 180s, be then placed in rinse bath and 20s rinsed with ＞ 100L/h water-carrying capacity；
（8）Activation：Automobile instrument panel feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is concentration 140ml/L hydrochloric acid, at room temperature soak time 15s, is then placed in rinse bath with ＞ 100L/h water
Flow rinses 20s；
（9）The acid zinc-nickel of plating：Automobile instrument panel feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 40g/L nickel chloride, 60g/L zinc chloride, 35g/L boric acid, 36 DEG C of temperature of electroplating solution, pH
Value 5.1, electroplating time 35min, current density 3A/dm2, it is then placed in rinse bath and 30s is floated with ＞ 100L/h water-carrying capacity；
（10）Alkali cleaning：The automobile instrument panel after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 40g/L, at room temperature
Alkali cleaning 25s, is then placed in rinse bath and rinses 20s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in automobile instrument panel feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
Solution in the dark film layer of remained on surface, the light output groove is 300ml/L hydrochloric acid, and light extraction temperature is room temperature, pH value 1.2,
10~20s of light extraction time, is then placed in rinse bath and rinses 20s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Automobile instrument panel feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 100ml/L for concentration, passivation temperature is 31 DEG C, and pH value is 2.0, and passivation time is 45s, is then placed in
20s is rinsed with ＞ 100L/h water-carrying capacity in rinse bath；
（13）Closing：It is 2.5g/L plate close agent 300WL7 in zero, automobile that automobile instrument panel after passivation is used into solid content
Part surface forms a kind of fine and close diaphragm, and the closure temperature is 40 DEG C, and pH value is 12.0, and off-period is 95s；
（14）Wind is cut：Overall purging 4min will be carried out first in automobile instrument panel feeding wind cutting apparatus after closing, then from up to
Under one by one product purged, time 10min finally carries out overall purging 4min again；
（15）Drying：Automobile instrument panel feeding drying oven after wind is cut carries out drying and processing, 100 DEG C of drying temperature, during drying
Between 18min.
Embodiment 3
The present embodiment automobile instrument panel electroplating technology, the electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Automobile instrument panel to be electroplated is subjected to electrochemical deoiling, the electrochemical deoiling uses concentration for 100g/L
HMC-02A degreasing powders and concentration be 8ml/L HMC-02B degreasers, except oil temperature be 70 DEG C, oil removing time 11.5min；
（2）Anode electrolysis：An anode electrolysis will be carried out in automobile instrument panel feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 6ml/L for 70g/L HMC-02A degreasing powders and concentration are used, at 70 DEG C and 4.0A/dm2's
Under the conditions of carry out electrolysis 370s, be then placed in rinse bath and 12s rinsed with ＞ 100L/h water-carrying capacity；
（3）Pickling：Automobile instrument panel after anode electrolysis is sent into the chlorohydric acid pickling pond that concentration is 210ml/L, in room
The lower pickling 370s of temperature, is then placed in rinse bath and rinses 12s with ＞ 100L/h water-carrying capacity；
（4）It is pre- zinc-plated：Automobile instrument panel after pickling is sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 20g/L zinc chloride, the mixed liquor of 150g/L potassium chloride and 30g/L boric acid, the control of pre-plating solution pH value exists
5.2, and in 28 DEG C of temperature and current density 2.0A/dm2Under conditions of preplating 10.5min；
（5）Pickling strip：By it is pre- it is zinc-plated after automobile instrument panel feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 210ml/L hydrochloric acid, and pickling 4.5min at room temperature is then placed in rinse bath with ＞ 100L/h water-carrying capacity
Rinse 12s；
（6）Ultrasonic oil removal：Automobile instrument panel surface after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
The HMC-02A degreasing powders for being 45g/L with concentration, except oil temperature is 50 DEG C, oil removing time 4.5min；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in automobile instrument panel feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 8ml/L for 70g/L HMC-02A degreasing powders and concentration, in temperature 60 C and electricity
Current density 3.0A/dm2Under conditions of carry out electrolysis 270s, be then placed in rinse bath and 12s rinsed with ＞ 100L/h water-carrying capacity；
（8）Activation：Automobile instrument panel feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is concentration 100ml/L hydrochloric acid, at room temperature soak time 22s, is then placed in rinse bath with ＞ 100L/h water
Flow rinses 12s；
（9）The acid zinc-nickel of plating：Automobile instrument panel feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 35g/L nickel chloride, 55g/L zinc chloride, 30g/L boric acid, 32 DEG C of temperature of electroplating solution, pH value
5.4, electroplating time 42min, current density 1.8A/dm2, it is then placed in rinse bath and 22s is rinsed with ＞ 100L/h water-carrying capacity；
（10）Alkali cleaning：The automobile instrument panel after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 28g/L, at room temperature
Alkali cleaning 35s, is then placed in rinse bath and rinses 12s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in automobile instrument panel feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
Solution in the dark film layer of remained on surface, the light output groove is 250ml/L hydrochloric acid, and light extraction temperature is room temperature, pH value 1.6,
Light extraction time 15s, is then placed in rinse bath and rinses 12s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Automobile instrument panel feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 80ml/L for concentration, passivation temperature is 28 DEG C, and pH value is 2.3, and passivation time is 50s, is then placed in
12s is rinsed with ＞ 100L/h water-carrying capacity in rinse bath；
（13）Closing：It is 2.3g/L plate close agent 300WL7 in zero, automobile that automobile instrument panel after passivation is used into solid content
Part surface forms a kind of fine and close diaphragm, and the closure temperature is 35 DEG C, and pH value is 11.0, and off-period is 102s；
（14）Wind is cut：Overall purging 3min will be carried out first in automobile instrument panel feeding wind cutting apparatus after closing, then from up to
Under one by one product purged, time 7min finally carries out overall purging 3min again；
（15）Drying：Automobile instrument panel feeding drying oven after wind is cut carries out drying and processing, 95 DEG C of drying temperature, drying time
24min。
Comparative example
The present embodiment automobile instrument panel electroplating technology, the electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Automobile instrument panel to be electroplated is subjected to electrochemical deoiling, the electrochemical deoiling use concentration for 85~
115g/L HMC-02A degreasing powders and concentration is 6~10ml/L HMC-02B degreasers, except oil temperature is 65~75 DEG C, oil removing
8~15min of time；
（2）Anode electrolysis：An anode electrolysis will be carried out in automobile instrument panel feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 4~8ml/L for 60~80g/L HMC-02A degreasing powders and concentration are used, at 65~75 DEG C
And 2.0~6.0A/dm2Under conditions of carry out 140~600s of electrolysis, be then placed in rinse bath and floated with ＞ 100L/h water-carrying capacity
Wash 5~20s；
（3）Pickling：Automobile instrument panel after anode electrolysis is sent into the chlorohydric acid pickling pond that concentration is 160~260ml/L,
160~600s of pickling, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity at room temperature；
（4）It is pre- zinc-plated：Automobile instrument panel after pickling is sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 10~30g/L zinc chloride, the mixed liquor of 125~175g/L potassium chloride and 25~35g/L boric acid, preplating
Liquid pH value is controlled between 4.9~5.6, and in 20~35 DEG C of temperature and 1.0~3.0A/dm of current density2Under conditions of preplating 6
~15min；
（5）Pickling strip：By it is pre- it is zinc-plated after automobile instrument panel feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 160~260ml/L hydrochloric acid, and 3~6min of pickling at room temperature is then placed in rinse bath with ＞ 100L/h's
Water-carrying capacity rinses 5~20s；
（6）Ultrasonic oil removal：Automobile instrument panel surface after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
With the HMC-02A degreasing powders that concentration is 30~60g/L, except oil temperature is 45~55 DEG C, 3~6min of oil removing time；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in automobile instrument panel feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 6~10ml/L for 60~80g/L HMC-02A degreasing powders and concentration, in temperature
50~70 DEG C and 1.0~5.0A/dm of current density2Under conditions of carry out 180~360s of electrolysis, be then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（8）Activation：Automobile instrument panel feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is 60~140ml/L of concentration hydrochloric acid, at room temperature 15~30s of soak time, is then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（9）The acid zinc-nickel of plating：Automobile instrument panel feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 30~40g/L nickel chloride, 50~60g/L zinc chloride, 25~35g/L boric acid, electroplate liquid
28~36 DEG C of temperature, pH value 5.1~5.6,35~50min of electroplating time, current density 0.5-3A/dm2, it is then placed in rinse bath
The interior water-carrying capacity with ＞ 100L/h rinses 15~30s；
（10）Alkali cleaning：The automobile instrument panel after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 15~40g/L, in room
Lower 25~the 45s of alkali cleaning of temperature, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in automobile instrument panel feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
The hydrochloric acid that solution in the dark film layer of remained on surface, the light output groove is 200~300ml/L, light extraction temperature is room temperature, pH value
1.2~2.0,10~20s of light extraction time, are then placed in rinse bath and rinse 5~20s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Automobile instrument panel feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 60~100ml/L for concentration, passivation temperature is 25~31 DEG C, and pH value is 2.0~2.6, passivation time
For 45~55s, it is then placed in rinse bath and 5~20s is rinsed with ＞ 100L/h water-carrying capacity；
（13）Closing：It is 2.3~2.9g/L plate close agent 300WL7 in vapour that automobile instrument panel after passivation is used into solid content
Car component surface forms a kind of fine and close diaphragm, and the closure temperature is 48~52 DEG C, and pH value is 10.0~12.0, closing
Time is 95~110s；
（14）Wind is cut：8~16min of overall purging will be carried out in automobile instrument panel feeding wind cutting apparatus after closing；
（15）Drying：Automobile instrument panel feeding drying oven after wind is cut carries out drying and processing, and 90~100 DEG C of drying temperature is dried
Dry 18~30min of the time.
In order to protrude auto parts and components electroplating technology of the present invention, had the advantage that relative to electroplating technology, by embodiment 1~
The automobile instrument panel that the automobile instrument panel that 3 electroplating technologies are handled is handled with comparative example electroplating technology is detected that detection is tied
Fruit see the table below.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example | |
| Sealer solid content | 2.0g/L | 2.5g/L | 2.3g/L | 2.3~2.9g/L |
| Closure temperature | 30℃ | 40℃ | 35℃ | 48~52 DEG C |
| Wind butt formula | Entirety sweeps 2min, one by one product 4min is swept, 2min is integrally swept | Entirety sweeps 4min, and product sweeps 10min one by one, Entirety sweeps 4min | Entirety sweeps 3min, and product is swept one by one 7min, integrally sweeps 3min | Entirety is swept 8~16min |
| Product surface sealer residual rate | 10% | 1% | 5% | 20% |
| Product appearance | Difference | Well | It is moderate | It is unqualified |
As can be seen from the above table, the solid content and closure temperature of present invention reduction sealer, meanwhile, improve wind butt
Formula, can slow down the residual of sealer significantly, and sealer residual rate can be reduced to less than 10%；And embodiment 1, embodiment 2 and reality
Apply example 3 to be compared, the treatment effect of embodiment 3 is optimal, thus embodiment 3 is most preferred embodiment.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Art personnel are it should be appreciated that the present invention is not limited to the above embodiments, and described in above-described embodiment and specification is explanation
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
1. a kind of auto parts and components electroplating technology, it is characterised in that：The electroplating technology comprises the following steps：
（1）Electrochemical deoiling：Auto parts and components to be electroplated are subjected to electrochemical deoiling, the electrochemical deoiling use concentration for 85~
115g/L HMC-02A degreasing powders and concentration is 6~10ml/L HMC-02B degreasers, except oil temperature is 65~75 DEG C, oil removing
8~15min of time；
（2）Anode electrolysis：An anode electrolysis will be carried out in auto parts and components feeding anode electrolysis pond after electrochemical deoiling,
The HMC-02B degreasers that concentration is 4~8ml/L for 60~80g/L HMC-02A degreasing powders and concentration are used, at 65~75 DEG C
And 2.0~6.0A/dm2Under conditions of carry out 140~600s of electrolysis, be then placed in rinse bath and floated with ＞ 100L/h water-carrying capacity
Wash 5~20s；
（3）Pickling：Auto parts and components after anode electrolysis are sent into the chlorohydric acid pickling pond that concentration is 160~260ml/L,
160~600s of pickling, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity at room temperature；
（4）It is pre- zinc-plated：Auto parts and components after pickling are sent into pre- galvanizing bath and carried out in pre- zinc-plated processing, the pre- galvanizing bath
Pre-plating solution be 10~30g/L zinc chloride, the mixed liquor of 125~175g/L potassium chloride and 25~35g/L boric acid, preplating
Liquid pH value is controlled between 4.9~5.6, and in 20~35 DEG C of temperature and 1.0~3.0A/dm of current density2Under conditions of preplating 6
~15min；
（5）Pickling strip：By it is pre- it is zinc-plated after auto parts and components feeding pickling tube in carry out pickling strip, in the pickling tube
Pickle is 160~260ml/L hydrochloric acid, and 3~6min of pickling at room temperature is then placed in rinse bath with ＞ 100L/h's
Water-carrying capacity rinses 5~20s；
（6）Ultrasonic oil removal：Surface of automobile part after pickling strip is subjected to ultrasonic oil removal, the ultrasonic oil removal is adopted
With the HMC-02A degreasing powders that concentration is 30~60g/L, except oil temperature is 45~55 DEG C, 3~6min of oil removing time；
（7）Secondary anode is electrolysed：Secondary anode electricity will be carried out in auto parts and components feeding anode electrolysis pond after ultrasonic oil removal
Solution, uses the HMC-02B degreasers that concentration is 6~10ml/L for 60~80g/L HMC-02 degreasing powders A and concentration, in temperature
50~70 DEG C and 1.0~5.0A/dm of current density2Under conditions of carry out 180~360s of electrolysis, be then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（8）Activation：Auto parts and components feeding activated bath after secondary anode is electrolysed is carried out in activation process, the activated bath
Activating solution is 60~140ml/L of concentration hydrochloric acid, at room temperature 15~30s of soak time, is then placed in rinse bath with ＞
100L/h water-carrying capacity rinses 5~20s；
（9）The acid zinc-nickel of plating：Auto parts and components feeding admiro groove after activation is subjected to the acid zinc-nickel of plating, the zinc-nickel is closed
Electroplate liquid in golden groove includes 30~40g/L nickel chloride, 50~60g/L zinc chloride, 25~35g/L boric acid, electroplate liquid
28~36 DEG C of temperature, pH value 5.1~5.6,35~50min of electroplating time, current density 0.5-3A/dm2, it is then placed in rinse bath
The interior water-carrying capacity with ＞ 100L/h rinses 15~30s；
（10）Alkali cleaning：The auto parts and components after zinc-nickel will be plated to send into the sodium hydroxide alkali wash pool that concentration is 15~40g/L, in room
Lower 25~the 45s of alkali cleaning of temperature, is then placed in rinse bath and rinses 5~20s with ＞ 100L/h water-carrying capacity；
（11）Light extraction：Light extraction processing will be carried out in auto parts and components feeding light extraction treatment trough after alkali cleaning, remove auto parts and components
The hydrochloric acid that solution in the dark film layer of remained on surface, the light output groove is 200~300ml/L, light extraction temperature is room temperature, pH value
1.2~2.0,10~20s of light extraction time, are then placed in rinse bath and rinse 5~20s with ＞ 100L/h water-carrying capacity；
（12）Passivation：Auto parts and components feeding deactivation slot after light extraction is passivated to the passivating solution in processing, the deactivation slot
The passivator 3098HC for being 60~100ml/L for concentration, passivation temperature is 25~31 DEG C, and pH value is 2.0~2.6, passivation time
For 45~55s, it is then placed in rinse bath and 5~20s is rinsed with ＞ 100L/h water-carrying capacity；
（13）Closing：It is 2.0~2.5g/L plate close agent 300WL7 in vapour that auto parts and components after passivation are used into solid content
Car component surface forms a kind of fine and close diaphragm, and the closure temperature is 30~40 DEG C, and pH value is 10.0~12.0, closing
Time is 95~110s；
（14）Wind is cut：It will carry out 2~4min of overall purging in auto parts and components feeding wind cutting apparatus after closing first, then from upper
Product is purged one by one under, 4~10min of time, and 2~4min of overall purging is finally carried out again；
（15）Drying：Auto parts and components feeding drying oven after wind is cut carries out drying and processing, and 90~100 DEG C of drying temperature is dried
Dry 18~30min of the time.
2. auto parts and components electroplating technology according to claim 1, it is characterised in that：The HMC-02A degreasing powders, HMC-
02B degreasers and passivator 3098HC think to provide by wheat dolantin pleasure.
3. auto parts and components electroplating technology according to claim 1, it is characterised in that：The plate close agent 300WL7 by
Atotech (China) Chemical Co., Ltd. provides.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624928A (en) * | 2018-04-04 | 2018-10-09 | 延康汽车零部件如皋有限公司 | A kind of aftertreatment technology of automobile mask plastic electroplating |
| CN109537004A (en) * | 2018-12-29 | 2019-03-29 | 南通申海工业科技有限公司 | The process of iron and steel casting plating zinc-nickel |
| CN109537009A (en) * | 2018-12-29 | 2019-03-29 | 南通申海工业科技有限公司 | The plating of lug nut depth blind hole applies technique |
| CN112226795A (en) * | 2020-10-09 | 2021-01-15 | 宁波晶美科技有限公司 | Manufacturing method of automobile door handle |
| CN113913878A (en) * | 2020-07-10 | 2022-01-11 | 湖南鎏源新材料有限公司 | Totally-enclosed multifunctional ceiling type full-automatic barrel-plating galvanizing production line |
| CN113913911A (en) * | 2020-07-10 | 2022-01-11 | 湖南鎏源新材料有限公司 | Totally-enclosed full-automatic vertical lifting type electroplating production line |
| KR102445115B1 (en) * | 2021-06-17 | 2022-09-20 | (주)제이엘티 | Manufacturing method of metal hanger |
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| CN104726912A (en) * | 2015-03-19 | 2015-06-24 | 南通创源电化学科技有限公司 | Acid zinc-nickel electroplating method specially used for automotive brake casting |
| CN105951134A (en) * | 2016-06-12 | 2016-09-21 | 南通创源电化学科技有限公司 | Acid zinc plating technology for automobile braking system |
| CN106011953A (en) * | 2016-06-12 | 2016-10-12 | 南通创源电化学科技有限公司 | Acid zinc-nickel alloy electroplating process applied to automobile parts |
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| CN104726912A (en) * | 2015-03-19 | 2015-06-24 | 南通创源电化学科技有限公司 | Acid zinc-nickel electroplating method specially used for automotive brake casting |
| CN105951134A (en) * | 2016-06-12 | 2016-09-21 | 南通创源电化学科技有限公司 | Acid zinc plating technology for automobile braking system |
| CN106011953A (en) * | 2016-06-12 | 2016-10-12 | 南通创源电化学科技有限公司 | Acid zinc-nickel alloy electroplating process applied to automobile parts |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624928A (en) * | 2018-04-04 | 2018-10-09 | 延康汽车零部件如皋有限公司 | A kind of aftertreatment technology of automobile mask plastic electroplating |
| CN109537004A (en) * | 2018-12-29 | 2019-03-29 | 南通申海工业科技有限公司 | The process of iron and steel casting plating zinc-nickel |
| CN109537009A (en) * | 2018-12-29 | 2019-03-29 | 南通申海工业科技有限公司 | The plating of lug nut depth blind hole applies technique |
| CN113913878A (en) * | 2020-07-10 | 2022-01-11 | 湖南鎏源新材料有限公司 | Totally-enclosed multifunctional ceiling type full-automatic barrel-plating galvanizing production line |
| CN113913911A (en) * | 2020-07-10 | 2022-01-11 | 湖南鎏源新材料有限公司 | Totally-enclosed full-automatic vertical lifting type electroplating production line |
| CN112226795A (en) * | 2020-10-09 | 2021-01-15 | 宁波晶美科技有限公司 | Manufacturing method of automobile door handle |
| CN112226795B (en) * | 2020-10-09 | 2024-05-03 | 宁波晶美科技有限公司 | Manufacturing method of automobile door handle |
| KR102445115B1 (en) * | 2021-06-17 | 2022-09-20 | (주)제이엘티 | Manufacturing method of metal hanger |
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Application publication date: 20171013 |