CN106283141A - Bullion rose golden surface processes plating solution, preparation method and electro-plating method thereof - Google Patents

Bullion rose golden surface processes plating solution, preparation method and electro-plating method thereof Download PDF

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Publication number
CN106283141A
CN106283141A CN201610656034.5A CN201610656034A CN106283141A CN 106283141 A CN106283141 A CN 106283141A CN 201610656034 A CN201610656034 A CN 201610656034A CN 106283141 A CN106283141 A CN 106283141A
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China
Prior art keywords
plating
solution
bullion
palladium
plating solution
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CN201610656034.5A
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Chinese (zh)
Inventor
江捷新
曹霖
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Shenzhen Love Diamond Co Ltd
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Shenzhen Love Diamond Co Ltd
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Priority to CN201610656034.5A priority Critical patent/CN106283141A/en
Publication of CN106283141A publication Critical patent/CN106283141A/en
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/56Electroplating: Baths therefor from solutions of alloys
    • C25D3/62Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/56Electroplating: Baths therefor from solutions of alloys
    • C25D3/567Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of platinum group metals
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34Pretreatment of metallic surfaces to be electroplated

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The invention discloses a kind of bullion rose golden surface and process plating solution, preparation method and electro-plating method thereof, this preparation method is in the beaker that the potassium citrate of EDTA about 2Na and 100g weighing the copper sulfate of about 1g and the ammonium sulfite of about 120g, about 40g pours 1L into;The water dilution being subsequently adding 600ml is dissolved, and adds stirrer, beaker is put into heated and stirred 40 minutes in heat collecting type constant-temperature heating magnetic stirring apparatus;Adding dichloro diamino palladium and gold sodium sulfide after taking-up, wherein dichloro diamino palladium about 6g palladium Han palladium amount, is about 10g for gold sodium sulfide gold content;Add water to about 950ml, place into heated and stirred 15min in heat collecting type constant-temperature heating magnetic stirring apparatus, take out beaker and solution is filtered;Acid-base value tested by solution after the filtration PH paper of specification 69, if pH value is 8, then may be used;If pH value is less than 8, take ammonia with glue head dropper, add semicanal, stir 2 3min with Glass rod, then survey pH value, during until pH value is 8;Add pure water polishing solution and form plating solution after 1L.

Description

Bullion rose golden surface processes plating solution, preparation method and electro-plating method thereof
Technical field
The present invention relates to jewelry processing technology field, particularly relate to a kind of bullion rose golden surface process plating solution, Preparation method and electro-plating method thereof.
Background technology
Rose gold is a kind of metal alloy compositions for producing jewelry, the most generally noble metal Han gold, silver, copper etc., example As, in the rose gold of 8K, gold content is 33%, and in 18K rose gold, gold content is 75%.In market sale, rose gold element Deeply being liked by consumer, therefore people would generally be processed as rose golden on the surface of bullion, but existing place Reason method decay resistance is bad, and after wearing a period of time, the brightness of the rose golden of bullion does not just have the highest, Therefore it is easy to affect its using effect.
Summary of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of bullion rose golden surface to process plating Liquid, preparation method and electro-plating method thereof, rare golden surface electroplating effect is good, and electroplating bright degree is high, also will not after long-time use The phenomenon faded occurs.
For achieving the above object, the present invention provides a kind of bullion rose golden surface to process plating solution, including following group Point: the copper sulfate of 0.5-2g, the ammonium sulfite of 100-125g, the potassium citrate of EDTA-2Na, 85-115g of 25-55g, dichloro Containing gold content 5-15g in palladium amount 4-7g and gold sodium sulfide in diamino palladium.
For achieving the above object, the present invention also provides for a kind of bullion rose golden surface and processes the preparation side of plating solution Method, comprises the following steps:
Step a1, weighs copper sulfate and the ammonium sulfite of about 120g, an EDTA-2Na and 100g left side of about 40g of about 1g Right potassium citrate is poured in the beaker of 1L;
Step a2, the water dilution being subsequently adding 600ml is dissolved, and adds stirrer, beaker is put into heat collecting type heated at constant temperature magnetic Heated and stirred 40 minutes in power agitator;
Step a3, adds dichloro diamino palladium and gold sodium sulfide after taking-up, wherein dichloro diamino palladium about 6g palladium Han palladium amount, for sulfurous Acid gold sodium gold content is about 10g;
Step a4, adds water to about 950ml, places into heated and stirred 15min in heat collecting type constant-temperature heating magnetic stirring apparatus, takes out Beaker filters solution;
Step a5, the PH paper of specification 6-9 of the solution after filtration is tested acid-base value, if pH value is 8, then may be used;If pH value is less than 8 Time, taking ammonia with glue head dropper, add semicanal, stir 2-3min with Glass rod, then survey pH value, repetitive operation is until pH value is 8 Time till;
Step a6, adds pure water polishing solution and forms plating solution after 1L.
Wherein, between in described step 2, the temperature of stirring is 40-50 DEG C.
Wherein, described because dichloro diamino palladium and gold sodium sulfide are solution, thus by the dichloro diamino palladium purchased with The gauge of the concentration of gold sodium sulfide and required palladium and gold calculates required volume.
For achieving the above object, the present invention also provides for a kind of bullion rose golden surface and processes the plating side of plating solution Method, comprises the following steps:
Step b1, the most first opens pulse power heat engine 30min, and opens the setting of heat collecting type constant-temperature heating magnetic stirring apparatus Temperature is 50 DEG C;
Step b2, puts into the plating solution prepared and carries out heated and stirred;
Step b3, pre-plating piece is carried out cold water first wash-cold water of electrolytic degreasing-again washes;
Step b4, puts into after cold water is washed again and thoroughly cleans surface in ultrasonic washing unit, it is ensured that pre-plating piece clean surface;
Step b5, by activation of cathode, is placed on pre-plating piece on negative electrode and carries out electro-reduction reaction, is difficult to absorb electronics, for promoting Make it absorb electronics, make cathode potential be more negative than equilibrium potential, it is simple to plating;
Step b6, puts into plating Pt titanium net on the anode connecting constant current source in plating solution, sets the electric current of constant current source, and electricity Pressure is transferred to maximum;
Step b7, connects negative electrode by pre-plating piece and puts in plating solution, electroplating;
Step b8, plating product out first rinses surface with wash bottle, then with air-cooler, water is dried up;
Step b9, checks that the coating of electroplated product is the most qualified, if meeting, then and addressee warehouse-in.
Wherein, the inspection method of described step b9 is: observe by the naked eye the bright degree of coating surface, color and luster, smooth With hands wiping on coating, degree, looks at that combination rate is the most qualified.
Wherein, the concretely comprising the following steps of described step b3:
Step b31, is washed away pre-plating piece except the dirt of surface easy cleaning by cold water;
Step b32, removes the greasy dirt on pre-plating piece surface by electrolytic degreasing, allows the greasy dirt on pre-plating piece surface peel off pre-plating piece table Face, it is simple to follow-up cleaning removes cleans;
Step b33, the surface and oil contaminant of the pre-plating piece after electrolytic degreasing, wash intensification at cold water after taking-up and clean oil removing.
Wherein, in described step b5, pre-plating piece is by after activation of cathode, is washed with water and removes activation of cathode remained on surface Solution.
The invention has the beneficial effects as follows: compared with prior art, the bullion rose golden surface that the present invention provides Reason plating solution, preparation method and electro-plating method thereof, this plating solution preparation method is simple, and preparation cost is low, uses this plating solution to jewelry The surface of jewelry carries out rose gold electroplating processes, and processing its rose gold surface corrosion resistance of bullion obtained can be good, light Degree height, does not haves decolouring or the phenomenon faded yet after wearing for a long time.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preparation method of the bullion rose golden surface process plating solution of the present invention;
Fig. 2 is the flow chart of the electro-plating method of the bullion rose golden surface process plating solution of the present invention.
Detailed description of the invention
In order to more clearly state the present invention, below in conjunction with the accompanying drawings the present invention is further described.
The bullion rose golden surface of the present invention processes plating solution, including following components: the copper sulfate of 0.5-2g, 100- Containing palladium amount 4-7g and Asia in the ammonium sulfite of 125g, the potassium citrate of EDTA-2Na, 85-115g of 25-55g, dichloro diamino palladium Gold content 5-15g in auric sulfate sodium.
Referring to Fig. 1, the present invention also provides for a kind of bullion rose golden surface and processes the preparation method of plating solution, including Following steps:
Step Sa1, weighs copper sulfate and the ammonium sulfite of about 120g, an EDTA-2Na and 100g left side of about 40g of about 1g Right potassium citrate is poured in the beaker of 1L;
Step Sa2, the water dilution being subsequently adding 600ml is dissolved, and adds stirrer, beaker is put into heat collecting type heated at constant temperature magnetic Heated and stirred 40 minutes in power agitator;Between the temperature of the stirring in this step is 40-50 DEG C;
Step Sa3, adds dichloro diamino palladium and gold sodium sulfide after taking-up, wherein dichloro diamino palladium about 6g palladium Han palladium amount, for Asia Auric sulfate sodium gold content is about 10g;Because dichloro diamino palladium and gold sodium sulfide are solution, so by the dichloro diamino purchased The gauge of palladium and the concentration of gold sodium sulfide and required palladium and gold calculates required volume;The volume of such as gold sodium sulfide Can be 200ml, the volume of dichloro diamino palladium can be 60ml;
Step Sa4, adds water to about 950ml, places into heated and stirred 15min in heat collecting type constant-temperature heating magnetic stirring apparatus, takes Go out beaker solution is filtered;
Step Sa5, the PH paper of specification 6-9 of the solution after filtration is tested acid-base value, if pH value is 8, then may be used;If pH value is less than When 8, taking ammonia with glue head dropper, add semicanal, stir 2-3min with Glass rod, then survey pH value, repetitive operation is until pH value is 8 Time till;
Step Sa6, adds pure water polishing solution and forms plating solution after 1L.
Component optimal in this case is: the copper sulfate of 1g, the ammonium sulfite of 120g, the Fructus Citri Limoniae of EDTA-2Na, 100g of 40g Containing gold content 10g in palladium amount 6g and gold sodium sulfide in acid potassium, dichloro diamino palladium.
Compared to the situation of prior art, the bullion rose golden surface that the present invention provides processes plating solution, preparation side Method, this plating solution preparation method is simple, and preparation cost is low, it is not necessary to professional operator can complete, and its production efficiency pole It is high.
Further referring to Fig. 2, the present invention also provides for a kind of bullion rose golden surface and processes the plating side of plating solution Method, comprises the following steps:
Step Sb1, the most first opens pulse power heat engine 30min, and opens heat collecting type constant-temperature heating magnetic stirring apparatus and set Putting temperature is 50 DEG C;
Step Sb2, puts into the plating solution prepared and carries out heated and stirred;
Step Sb3, pre-plating piece is carried out cold water first wash-cold water of electrolytic degreasing-again washes;Concretely comprise the following steps step Sb31, will Pre-plating piece is washed away except the dirt of surface easy cleaning by cold water;Step Sb32, removes the oil on pre-plating piece surface by electrolytic degreasing Dirt, allows the greasy dirt on pre-plating piece surface peel off pre-plating piece surface, it is simple to follow-up cleaning removes cleans;Step Sb33, after electrolytic degreasing The surface and oil contaminant of pre-plating piece, wash intensification at cold water after taking-up and clean oil removing;
Step Sb4, puts into after cold water is washed again and thoroughly cleans surface in ultrasonic washing unit, it is ensured that pre-plating piece clean surface;
Step Sb5, by activation of cathode, is placed on pre-plating piece on negative electrode and carries out electro-reduction reaction, is difficult to absorb electronics, for promoting Make it absorb electronics, make cathode potential be more negative than equilibrium potential, it is simple to plating;Pre-plating piece is by, after activation of cathode, being washed with water Remove the solution of activation of cathode remained on surface;
Step Sb6, puts into plating Pt titanium net on the anode connecting constant current source in plating solution, sets the electric current of constant current source, and handle Voltage is transferred to maximum;
Step Sb7, connects negative electrode by pre-plating piece and puts in plating solution, electroplating;
Step b8, plating product out first rinses surface with wash bottle, then with air-cooler, water is dried up;
Step Sb9, checks that the coating of electroplated product is the most qualified, if meeting, then and addressee warehouse-in.
Wherein, the inspection method of step b9 is: observe by the naked eye the bright degree of coating surface, color and luster, smoothness, uses Hands wiping on coating looks at that combination rate is the most qualified.
Compared to the situation of prior art, the bullion rose golden surface that the present invention provides processes the plating side of plating solution Method, uses this plating solution that the surface of bullion carries out rose gold electroplating processes, processes its Flos Rosae Rugosae golden watch of bullion obtained Surface corrosive can be good, and brightness is high, does not also have decolouring or the phenomenon faded after wearing for a long time.
The several specific embodiments being only the present invention disclosed above, but the present invention is not limited to this, any ability What the technical staff in territory can think change all should fall into protection scope of the present invention.

Claims (8)

1. a bullion rose golden surface processes plating solution, it is characterised in that include the sulphuric acid of following components: 0.5-2g Amount 4-Han palladium in copper, the ammonium sulfite of 100-125g, the potassium citrate of EDTA-2Na, 85-115g of 25-55g, dichloro diamino palladium Gold content 5-15g in 7g and gold sodium sulfide.
2. the preparation method of a bullion rose golden surface process plating solution, it is characterised in that comprise the following steps:
Step a1, weighs copper sulfate and the ammonium sulfite of about 120g, an EDTA-2Na and 100g left side of about 40g of about 1g Right potassium citrate is poured in the beaker of 1L;
Step a2, the water dilution being subsequently adding 600ml is dissolved, and adds stirrer, beaker is put into heat collecting type heated at constant temperature magnetic Heated and stirred 40 minutes in power agitator;
Step a3, adds dichloro diamino palladium and gold sodium sulfide after taking-up, wherein dichloro diamino palladium about 6g palladium Han palladium amount, for sulfurous Acid gold sodium gold content is about 10g;
Step a4, adds water to about 950ml, places into heated and stirred 15min in heat collecting type constant-temperature heating magnetic stirring apparatus, takes out Beaker filters solution;
Step a5, the PH paper of specification 6-9 of the solution after filtration is tested acid-base value, if pH value is 8, then may be used;If pH value is less than 8 Time, taking ammonia with glue head dropper, add semicanal, stir 2-3min with Glass rod, then survey pH value, repetitive operation is until pH value is 8 Time till;
Step a6, adds pure water polishing solution and forms plating solution after 1L.
Bullion rose golden surface the most according to claim 2 processes the preparation method of plating solution, it is characterised in that institute State in step 2 between the temperature of stirring is 40-50 DEG C.
Bullion rose golden surface the most according to claim 2 processes the preparation method of plating solution, it is characterised in that institute State because dichloro diamino palladium and gold sodium sulfide are solution, so by the dichloro diamino palladium purchased and the concentration of gold sodium sulfide Required volume is calculated with the gauge of required palladium and gold.
5. the electro-plating method of a bullion rose golden surface process plating solution, it is characterised in that comprise the following steps:
Step b1, the most first opens pulse power heat engine 30min, and opens the setting of heat collecting type constant-temperature heating magnetic stirring apparatus Temperature is 50 DEG C;
Step b2, puts into the plating solution prepared and carries out heated and stirred;
Step b3, pre-plating piece is carried out cold water first wash-cold water of electrolytic degreasing-again washes;
Step b4, puts into after cold water is washed again and thoroughly cleans surface in ultrasonic washing unit, it is ensured that pre-plating piece clean surface;
Step b5, by activation of cathode, is placed on pre-plating piece on negative electrode and carries out electro-reduction reaction, is difficult to absorb electronics, for promoting Make it absorb electronics, make cathode potential be more negative than equilibrium potential, it is simple to plating;
Step b6, puts into plating Pt titanium net on the anode connecting constant current source in plating solution, sets the electric current of constant current source, and electricity Pressure is transferred to maximum;
Step b7, connects negative electrode by pre-plating piece and puts in plating solution, electroplating;
Step b8, plating product out first rinses surface with wash bottle, then with air-cooler, water is dried up;
Step b9, checks that the coating of electroplated product is the most qualified, if meeting, then and addressee warehouse-in.
Bullion rose golden surface the most according to claim 5 processes the electro-plating method of plating solution, it is characterised in that institute The inspection method stating step b9 is: observe by the naked eye the bright degree of coating surface, color and luster, smoothness, with hands on coating Wiping looks at that combination rate is the most qualified.
Bullion rose golden surface the most according to claim 5 processes the electro-plating method of plating solution, it is characterised in that institute State concretely comprising the following steps of step b3:
Step b31, is washed away pre-plating piece except the dirt of surface easy cleaning by cold water;
Step b32, removes the greasy dirt on pre-plating piece surface by electrolytic degreasing, allows the greasy dirt on pre-plating piece surface peel off pre-plating piece table Face, it is simple to follow-up cleaning removes cleans;
Step b33, the surface and oil contaminant of the pre-plating piece after electrolytic degreasing, wash intensification at cold water after taking-up and clean oil removing.
Bullion rose golden surface the most according to claim 5 processes the electro-plating method of plating solution, it is characterised in that institute State pre-plating piece in step b5 and, by after activation of cathode, be washed with water the solution removing activation of cathode remained on surface.
CN201610656034.5A 2016-08-11 2016-08-11 Bullion rose golden surface processes plating solution, preparation method and electro-plating method thereof Pending CN106283141A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107502930A (en) * 2017-08-31 2017-12-22 深圳百泰新贵科技有限公司 A kind of rose gold plating bath, preparation method and electrocasting method
CN107723749A (en) * 2017-08-31 2018-02-23 深圳百泰新贵科技有限公司 A kind of gold is without cyanogen electroforming solution, preparation method and electrocasting method
CN109097813A (en) * 2018-11-05 2018-12-28 史晓宗 A kind of jewelry processing environment-friendly type electroplanting device
CN110699713A (en) * 2019-11-21 2020-01-17 长春黄金研究院有限公司 Cyanide-free gold alloy electroforming solution and using method thereof
CN112342581A (en) * 2020-10-20 2021-02-09 赵国柱 Plating solution for electroplating gold-copper alloy by using cyanide-free sulfite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980531A (en) * 1974-09-20 1976-09-14 Schering Aktiengesellschaft Bath and process for the electrolytic separation of rare metal alloys
JPS53149132A (en) * 1977-06-01 1978-12-26 Citizen Watch Co Ltd Golddpalladiummcopper alloy plating liquid
CN1109110A (en) * 1995-01-13 1995-09-27 清华大学 Process for non-cyanogen electroforming of gold alloy products
CN102677110A (en) * 2012-04-19 2012-09-19 永保纳米科技(深圳)有限公司 Au-Pd alloy electroplating solution as well as preparation method and electroplating process thereof
CN103668360A (en) * 2012-08-31 2014-03-26 日本电镀工程股份有限公司 Non-cyanide gold-palladium alloy plating liquid and plating method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980531A (en) * 1974-09-20 1976-09-14 Schering Aktiengesellschaft Bath and process for the electrolytic separation of rare metal alloys
JPS53149132A (en) * 1977-06-01 1978-12-26 Citizen Watch Co Ltd Golddpalladiummcopper alloy plating liquid
CN1109110A (en) * 1995-01-13 1995-09-27 清华大学 Process for non-cyanogen electroforming of gold alloy products
CN102677110A (en) * 2012-04-19 2012-09-19 永保纳米科技(深圳)有限公司 Au-Pd alloy electroplating solution as well as preparation method and electroplating process thereof
CN103668360A (en) * 2012-08-31 2014-03-26 日本电镀工程股份有限公司 Non-cyanide gold-palladium alloy plating liquid and plating method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107502930A (en) * 2017-08-31 2017-12-22 深圳百泰新贵科技有限公司 A kind of rose gold plating bath, preparation method and electrocasting method
CN107723749A (en) * 2017-08-31 2018-02-23 深圳百泰新贵科技有限公司 A kind of gold is without cyanogen electroforming solution, preparation method and electrocasting method
CN109097813A (en) * 2018-11-05 2018-12-28 史晓宗 A kind of jewelry processing environment-friendly type electroplanting device
CN110699713A (en) * 2019-11-21 2020-01-17 长春黄金研究院有限公司 Cyanide-free gold alloy electroforming solution and using method thereof
CN112342581A (en) * 2020-10-20 2021-02-09 赵国柱 Plating solution for electroplating gold-copper alloy by using cyanide-free sulfite

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Application publication date: 20170104