CN105951144A - Nickel plating process for deep-hole part - Google Patents
Nickel plating process for deep-hole part Download PDFInfo
- Publication number
- CN105951144A CN105951144A CN201610445819.8A CN201610445819A CN105951144A CN 105951144 A CN105951144 A CN 105951144A CN 201610445819 A CN201610445819 A CN 201610445819A CN 105951144 A CN105951144 A CN 105951144A
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- CN
- China
- Prior art keywords
- nickel
- deep
- nickel plating
- plating
- parts
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
-
- 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
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
-
- 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
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
- C25D3/14—Electroplating: Baths therefor from solutions of nickel or cobalt from baths containing acetylenic or heterocyclic compounds
- C25D3/16—Acetylenic 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
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
Abstract
The invention discloses a nickel plating process for a deep-hole part. The nickel plating process comprises the steps of cleaning the deep-hole part; then planting dull nickel through electroplating; taking the part out, cleaning the part, and then adding an intermediate to a nickel plating solution; then planting glossy nickel through electroplating; and taking the part out, so that the nickel plating process is completed. An inner chamber of the deep-hole part treated through the nickel plating process is good in surface quality and high in corrosion resistance; and no obvious corrosion spot is generated when the part is put in the salt spray condition for 40 hours. By means of the nickel plating process, sewage treatment burdens are reduced; cost is low; and the process is stable.
Description
Technical field
The present invention relates to a kind of part nickel plating technology, particularly a kind of deep-hole parts nickel plating technology.
Background technology
For avoiding deep-hole parts (endoporus≤90mm length, the spare part of intracavity diameter >=15mm or parts) inner chamber to get rusty, often
Often need its inner chamber is carried out coating process.When deep-hole parts is carried out nickel plating, owing to inner cavity of component size is little, endoporus is longer,
Existing nickel plating technology effectively can't carry out coating to inner chamber, or coating rear interior cavity surface quality is poor, the most corrosion-resistant.This
Outward, the most usually use chemical nickel plating that deep-hole parts is carried out coating.But chemical nickel plating need to add reducing agent and other reagent, makes
Obtaining solution to change greatly, the membership that adds of reducing agent makes oxygen consumption in sewage increase, and adds sewage disposal burden, for making sewage disposal
Reach standard (oxygen consumption is less than 80mg), special sewage disposal device need to be set so that cost is greatly increased.
Summary of the invention
It is an object of the invention to, it is provided that a kind of deep-hole parts nickel plating technology.Deep-hole parts after present invention process nickel plating
Surface of internal cavity quality is good, and anti-corrosive properties are preferable, and under the conditions of salt fog, 40h is without obvious hot spot.Reduce sewage disposal burden, cost
Low, process stabilizing.
The present invention realizes by the following technical solutions:
A kind of deep-hole parts nickel plating technology, specifically includes following steps:
(1) take deep-hole parts, after soaking 5-10min with the sodium hydroxide solution that concentration is 5-15%, take out；
(2), after being cleaned by the part use water taken out, at 20-35 DEG C, in the mixed liquor of sulphuric acid, nitric acid and hydrochloric acid, gloss corrodes 10-
25s；
(3) part after corrosion is taken out, after cleaning with water, in the aqueous sodium carbonate that concentration is 1-10%, soak 3-5min；
(4) part after soaking is placed in nickel-plating liquid A, plates dark nickel by plating mode, and control electric current density is 3-8A/dm3,
PH is 4.2-4.8, and the time is 10-12min so that nickel plating thickness is 1-3 μm；
(5) it is that 1000:6 adds intermediate in nickel-plating liquid A by the volume ratio of nickel-plating liquid A Yu intermediate, obtains nickel-plating liquid B, will step
Suddenly the Cleaning of Parts after plating dark nickel in (4) is placed in nickel-plating liquid B, and by plating mode bright nickel plating, during being somebody's turn to do, temperature is
50-55 DEG C, electric current density is 3-10A/dm3, pH is 4.2-4.8；Electroplating time: 20-25min, thickness: 7-10 μm；
(6), after the part after bright nickel plating in step (5) being cleaned with deionized water, it is dried,.
In aforesaid deep-hole parts nickel plating technology, every 1000 parts by volume mixed liquors, by volume part calculates, concentration be 30-
The hydrochloric acid of 33% 250 parts, mass fraction are that 320 parts of the nitric acid of 60-55%, concentration are 320 parts of the sulphuric acid of 93-95% and 110 parts of water mixes
Conjunction forms.
In aforesaid deep-hole parts nickel plating technology, the content of described nickel-plating liquid A is: nickel sulfate 220-300g/L, Nickel dichloride.
60-80g/L, boric acid 35-45g/L.
In aforesaid deep-hole parts nickel plating technology, described intermediate contains BH-981 open cylinder agent, propinyl sodium sulfonate, propilolic alcohol
Sodium sulfonate and BH-981 auxiliary brightener.
In aforesaid deep-hole parts nickel plating technology, the content of described intermediate is: BH-981 open cylinder agent 2-10ml/L, propine
Base sodium sulfonate 1-4ml/L, sodium isethionate 0.5-1.5ml/L and BH-981 auxiliary brightener 0.5-1ml/L.
In aforesaid deep-hole parts nickel plating technology, by volume part calculates, described BH-981 open cylinder agent propoxyl group Han propilolic alcohol
Compound 8 parts, glycine 1 part and 9 parts of water.
In aforesaid deep-hole parts nickel plating technology, described propilolic alcohol propoxylated compounds is by propilolic alcohol, ethyoxyl carboxymethyl
Pyridinium and water mix；The weight ratio of described propilolic alcohol, ethyoxyl carboxymethyl pyridinium and water is 1:1:8.
In aforesaid deep-hole parts nickel plating technology, by volume part calculates, described BH-981 auxiliary brightener base Han alkynol
Compound 8 parts and cystine 1 part.
In aforesaid deep-hole parts nickel plating technology, described alkynol based compound is butynediols dipropoxy ether.
The method have the advantages that
1, the deep-hole parts surface of internal cavity quality after present invention process nickel plating is good, and antiseptic property is good.The present invention selects BH-981
Open cylinder agent, propinyl sodium sulfonate, hydroxyethylsulfonic acid. and BH-981 auxiliary brightener make intermediate, and in sulfuric urea nickel plating
Process conditions under complete the addition of intermediate, the staggered floor structure so making coating structure not common carrys out anticorrosion, but
To reduce the polarization potential in low current district, improve dispersibility and the covering power of plating solution, thus improve the compactness of coating
Ensure corrosion-resistant.The 85% of quality of coating chemically nickel plating (contact portion is grown dim, inner chamber autoreaction is sent out thick etc.) rises to
More than 98%.Applicant finds through test, containing BH-981 open cylinder agent 2-10ml/L, propinyl in intermediate is by every liter of intermediate
When sodium sulfonate 1-4ml/L, sodium isethionate 0.5-1.5ml/L and BH-981 auxiliary brightener 0.5-1ml/L, last deep hole zero
The quality of coating of part inner chamber is preferable.Propilolic alcohol propoxylated compounds, glycine and water simultaneously
Make BH-981 open cylinder agent in ratio of the present invention, and propilolic alcohol propoxylated compounds is by propilolic alcohol and ethyoxyl carboxymethyl pyrrole
Pyridine drone mix；Alkynol based compound and cystine is selected to make BH-981 auxiliary brightener, and alkynol in ratio of the present invention
When based compound is butynediols dipropoxy ether, nickel plating effect is best, and the quality of coating of the deep-hole parts inner chamber after nickel plating is good.
Asking someone to take and carry out salt spray test by by the deep-hole parts inner chamber after 1 nickel plating of embodiment, result of the test is the corrosion-free point of 24h, 40h
Without obvious hot spot, and the surface of internal cavity after existing technique nickel plating is under the conditions of identical salt fog, 24h can find hot spot,
40h has obvious hot spot
2, need not in present invention process add reducing agent, the process conditions of sulfuric urea nickel plating are carried out, solution-stabilized, produce
Sewage be acidity, ionic species is simple, only can be neutralized by sewage by adding alkali, it is achieved sewage disposal, it is not necessary to setting
Special sewage disposal device, reduces sewage disposal burden, low cost.And sewage disposal is simple.
, when carrying out nickel plating by the parameter in present invention process, nickel plating technology is stable, and without anode self-passivation phenomenon, 24h works
Phenomenon without exception.
Further illustrate the present invention by the following examples, but not as limitation of the present invention.
Detailed description of the invention
Embodiment 1.
A kind of deep-hole parts nickel plating technology, specifically includes following steps:
1, take deep-hole parts, after soaking 8min with the sodium hydroxide solution that concentration is 10%, take out；
2, after being cleaned by the part use water taken out, at 20-35 DEG C, in the mixed liquor of sulphuric acid, nitric acid and hydrochloric acid, gloss corrodes 18s；
3, the part after corrosion is taken out, after cleaning with water, in the aqueous sodium carbonate that concentration is 5%, soak 4min；
4, the part after soaking is placed in nickel-plating liquid A, plates dark nickel by plating mode, and control electric current density is 6A/dm3, pH
For 4.2-4.8, the time is 11min so that nickel plating thickness is 2 μm；
5, it is that 1000:6 adds intermediate in nickel-plating liquid A by the volume ratio of nickel-plating liquid A Yu intermediate, obtains nickel-plating liquid B, by step
Plating the Cleaning of Parts after dark nickel in 4 to be placed in nickel-plating liquid B, by plating mode bright nickel plating, during being somebody's turn to do, temperature is 50-55
DEG C, electric current density is 6A/dm3, pH is 4.2-4.8；Electroplating time: 23min, thickness: 8 μm；
6, after the part after bright nickel plating in step 5 being cleaned with deionized water, it is dried,.
Above-mentioned mixed liquor is prepared: first measures the hydrochloric acid that 250ml concentration is 30-33%, is placed in beaker, is subsequently adding
320ml concentration is nitric acid and the water of 110ml of 60-55%, finally adds the sulphuric acid that 320ml concentration is 93-95%, adds fashionable slow
Slowly add from chamber wall, and be stirred continuously, after stirring, to be cooled to ＜ 35 DEG C, can use.
The content of described nickel-plating liquid A is: nickel sulfate 270g/L, Nickel dichloride. 70g/L, boric acid 40g/L；
The content of described intermediate is: BH-981 open cylinder agent 6ml/L, propinyl sodium sulfonate 2ml/L, sodium isethionate 1ml/L
With BH-981 auxiliary brightener 0.8ml/L；
Described BH-981 open cylinder agent is mixed by propilolic alcohol propoxylated compounds 8ml, glycine 1ml and water 9ml；
Described propilolic alcohol propoxylated compounds is mixed by the water of propilolic alcohol 100g, ethyoxyl carboxymethyl pyridinium 100g and 800ml
Form；
Described BH-981 auxiliary brightener is mixed by butynediols dipropoxy ether 8ml and cystine 1ml.
Embodiment 2.
A kind of deep-hole parts nickel plating technology,
Specifically include following steps:
1, take deep-hole parts, after soaking 10min with the sodium hydroxide solution that concentration is 15%, take out；
2, after being cleaned by the part use water taken out, at 20-35 DEG C, in the mixed liquor of sulphuric acid, nitric acid and hydrochloric acid, gloss corrodes 25s；
3, the part after corrosion is taken out, after cleaning with water, in the aqueous sodium carbonate that concentration is 1-10%, soak 5min；
4, the part after soaking is placed in nickel-plating liquid A, plates dark nickel by plating mode, and control electric current density is 8A/dm3, pH
For 4.2-4.8, the time is 12min so that nickel plating thickness is 3 μm；
5, it is that 1000:6 adds intermediate in nickel-plating liquid A by the volume ratio of nickel-plating liquid A Yu intermediate, obtains nickel-plating liquid B, by step
Plating the Cleaning of Parts after dark nickel in 4 to be placed in nickel-plating liquid B, by plating mode bright nickel plating, during being somebody's turn to do, temperature is 50-55
DEG C, electric current density is 10A/dm3, pH is 4.2-4.8；Electroplating time: 25min, thickness: 10 μm；
6, after the part after bright nickel plating in step 5 being cleaned with deionized water, it is dried,.
Above-mentioned mixed liquor is prepared: first measures the hydrochloric acid that 250ml concentration is 33%, is placed in beaker, is subsequently adding
320ml concentration is nitric acid and the water of 110ml of 55%, finally adds the sulphuric acid that 320ml concentration is 95%, and it is fashionable the most calm to add
Wall adds, and is stirred continuously, after stirring, to be cooled to ＜ 35 DEG C, can use.
The content of described nickel-plating liquid A is: nickel sulfate 300g/L, Nickel dichloride. 80g/L, boric acid 45g/L；
The content of described intermediate is: BH-981 open cylinder agent 10ml/L, propinyl sodium sulfonate 4ml/L, sodium isethionate
1.5ml/L and BH-981 auxiliary brightener 0.5-1ml/L；
Described BH-981 open cylinder agent is mixed by propilolic alcohol propoxylated compounds 8ml, glycine 1ml and water 9ml；
Described propilolic alcohol propoxylated compounds is mixed by the water of propilolic alcohol 100g, ethyoxyl carboxymethyl pyridinium 100g and 800ml
Form；
Described BH-981 auxiliary brightener is mixed by butynediols dipropoxy ether 8ml and cystine 1ml.
Embodiment 3.
A kind of deep-hole parts nickel plating technology,
Specifically include following steps:
1, take deep-hole parts, after soaking 5min with the sodium hydroxide solution that concentration is 5%, take out；
2, after being cleaned by the part use water taken out, at 20-35 DEG C, in the mixed liquor of sulphuric acid, nitric acid and hydrochloric acid, gloss corrodes 10s；
3, the part after corrosion is taken out, after cleaning with water, in the aqueous sodium carbonate that concentration is 1-10%, soak 3min；
4, the part after soaking is placed in nickel-plating liquid A, plates dark nickel by plating mode, and control electric current density is 3A/dm3, pH
For 4.2-4.8, the time is 10min so that nickel plating thickness is 1 μm；
5, it is that 1000:6 adds intermediate in nickel-plating liquid A by the volume ratio of nickel-plating liquid A Yu intermediate, obtains nickel-plating liquid B, by step
Plating the Cleaning of Parts after dark nickel in 4 to be placed in nickel-plating liquid B, by plating mode bright nickel plating, during being somebody's turn to do, temperature is 50-55
DEG C, electric current density is 3A/dm3, pH is 4.2-4.8；Electroplating time: 20min, thickness: 7 μm；
6, after the part after bright nickel plating in step 5 being cleaned with deionized water, it is dried,.
Mixed liquor is prepared: get out container and work safety requirement, first measures the hydrochloric acid that 250ml concentration is 30%, so
After measure the nitric acid and the water of 110ml that 320ml concentration is 60%, measure the sulphuric acid that 320ml concentration is 93% the most again, the most calmly
Wall adds, and is stirred continuously, after stirring, to be cooled to ＜ 35 DEG C, can use.
The content of described nickel-plating liquid A is: nickel sulfate 220g/L, Nickel dichloride. 60g/L, boric acid 35g/L；
The content of described intermediate is: BH-981 open cylinder agent 2ml/L, propinyl sodium sulfonate 1ml/L, sodium isethionate 0.5ml/
L and BH-981 auxiliary brightener 0.5ml/L；
Described BH-981 open cylinder agent is mixed by propilolic alcohol propoxylated compounds 8ml, glycine 1ml and water 9ml；
Described propilolic alcohol propoxylated compounds is mixed by the water of propilolic alcohol 100g, ethyoxyl carboxymethyl pyridinium 100g and 800ml
Form；
Described BH-981 auxiliary brightener is mixed by butynediols dipropoxy ether 8ml and cystine 1ml.
Claims (9)
1. a deep-hole parts nickel plating technology, it is characterised in that: specifically include following steps:
Take deep-hole parts, after soaking 5-10min with the sodium hydroxide solution that concentration is 5-15%, take out；
After being cleaned by the part use water taken out, at 20-35 DEG C, in the mixed liquor of sulphuric acid, nitric acid and hydrochloric acid, gloss corrodes 10-
25s；
Part after corrosion is taken out, after cleaning with water, in the aqueous sodium carbonate that concentration is 1-10%, soaks 3-5min；
Part after soaking is placed in nickel-plating liquid A, plates dark nickel by plating mode, and control electric current density is 3-8A/dm3, pH is
4.2-4.8, the time is 10-12min so that nickel plating thickness is 1-3 μm；
(5) it is that 1000:6 adds intermediate in nickel-plating liquid A by the volume ratio of nickel-plating liquid A Yu intermediate, obtains nickel-plating liquid B, will step
Suddenly the Cleaning of Parts after plating dark nickel in (4) is placed in nickel-plating liquid B, and by plating mode bright nickel plating, during being somebody's turn to do, temperature is
50-55 DEG C, electric current density is 3-10A/dm3, pH is 4.2-4.8；Electroplating time: 20-25min, thickness: 7-10 μm；
(6), after the part after bright nickel plating in step (5) being cleaned with deionized water, it is dried,.
Deep-hole parts nickel plating technology the most according to claim 1, it is characterised in that: by volume part calculates, every 1000 volumes
Portion mixed liquor, by the hydrochloric acid that concentration is 30-33% 250 parts, concentration be 320 parts of the nitric acid of 60-55%, concentration be the sulphuric acid of 93-95%
320 parts mix with 110 parts of water.
Deep-hole parts nickel plating technology the most according to claim 1, it is characterised in that: the content of described nickel-plating liquid A is: sulphuric acid
Nickel 220-300g/L, Nickel dichloride. 60-80g/L, boric acid 35-45g/L.
Deep-hole parts nickel plating technology the most according to claim 1, it is characterised in that: described intermediate opens cylinder containing BH-981
Agent, propinyl sodium sulfonate, propilolic alcohol sodium sulfonate and BH-981 auxiliary brightener.
Deep-hole parts nickel plating technology the most according to claim 1, it is characterised in that: the content of described intermediate is: BH-
981 open cylinder agent 2-10ml/L, propinyl sodium sulfonate 1-4ml/L, sodium isethionate 0.5-1.5ml/L and BH-981 assist light
Agent 0.5-1ml/L.
Deep-hole parts nickel plating technology the most according to claim 5, it is characterised in that: by volume part calculates, described BH-981
Open cylinder agent is containing propilolic alcohol propoxylated compounds 8 parts, glycine 1 part and 9 parts of water.
Deep-hole parts nickel plating technology the most according to claim 6, it is characterised in that: described propilolic alcohol propoxylated compounds by
Propilolic alcohol, ethyoxyl carboxymethyl pyridinium and water mix；Described propilolic alcohol, ethyoxyl carboxymethyl pyridinium and the weight of water
Ratio is 1:1:8.
Deep-hole parts nickel plating technology the most according to claim 5, it is characterised in that: by volume part calculates, described BH-981
Auxiliary brightener is containing alkynol based compound 8 parts and cystine 1 part.
Deep-hole parts nickel plating technology the most according to claim 8, it is characterised in that: described alkynol based compound is butine
Glycol dipropoxy ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445819.8A CN105951144A (en) | 2016-06-21 | 2016-06-21 | Nickel plating process for deep-hole part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610445819.8A CN105951144A (en) | 2016-06-21 | 2016-06-21 | Nickel plating process for deep-hole part |
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| Publication Number | Publication Date |
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| CN105951144A true CN105951144A (en) | 2016-09-21 |
Family
ID=56907024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610445819.8A Pending CN105951144A (en) | 2016-06-21 | 2016-06-21 | Nickel plating process for deep-hole part |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588768A (en) * | 2018-05-29 | 2018-09-28 | 广州市华番盛化工科技有限公司 | Steel and iron parts alkalinity deep hole nickel-plating additive, pre-plating solution and pre-plating process |
| CN109722689A (en) * | 2019-01-17 | 2019-05-07 | 首都航天机械有限公司 | A kind of narrow deep trouth copper plate uniformity control method of aluminium alloy flange disk |
| CN110344088A (en) * | 2019-08-26 | 2019-10-18 | 钢铁研究总院 | A kind of Deep hole electroplating nickel plating bath and preparation method thereof |
| CN111334825A (en) * | 2018-12-19 | 2020-06-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Sulfate system deep hole nickel plating additive, preparation method and electroplating process |
| CN111748830A (en) * | 2020-07-22 | 2020-10-09 | 六安市金安区宝德龙科技创新有限公司 | High-speed barrel nickel plating brightener and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588768A (en) * | 2018-05-29 | 2018-09-28 | 广州市华番盛化工科技有限公司 | Steel and iron parts alkalinity deep hole nickel-plating additive, pre-plating solution and pre-plating process |
| CN111334825A (en) * | 2018-12-19 | 2020-06-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Sulfate system deep hole nickel plating additive, preparation method and electroplating process |
| CN109722689A (en) * | 2019-01-17 | 2019-05-07 | 首都航天机械有限公司 | A kind of narrow deep trouth copper plate uniformity control method of aluminium alloy flange disk |
| CN110344088A (en) * | 2019-08-26 | 2019-10-18 | 钢铁研究总院 | A kind of Deep hole electroplating nickel plating bath and preparation method thereof |
| CN111748830A (en) * | 2020-07-22 | 2020-10-09 | 六安市金安区宝德龙科技创新有限公司 | High-speed barrel nickel plating brightener and preparation method thereof |
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Application publication date: 20160921 |