CN102817050A - Brass compact artificial jewelry cadmium-free nickel-free leadless 18K gold electroplating method - Google Patents
Brass compact artificial jewelry cadmium-free nickel-free leadless 18K gold electroplating method Download PDFInfo
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- CN102817050A CN102817050A CN2012102048006A CN201210204800A CN102817050A CN 102817050 A CN102817050 A CN 102817050A CN 2012102048006 A CN2012102048006 A CN 2012102048006A CN 201210204800 A CN201210204800 A CN 201210204800A CN 102817050 A CN102817050 A CN 102817050A
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Abstract
The invention belongs to the field of production and cleaning in electroplating industry, and especially relates to a brass compact artificial jewelry cadmium-free nickel-free leadless 18K gold electroplating method. The method comprises the following steps of: pretreatment, multistep washing, alkaline copper electroplating, multistep washing, bright acid copper electroplating, multistep washing, leadless white copper electroplating, multistep washing, cadmium-free 18K gold electroplating, multistep washing and drying. According to the electroplating method, wear resistance of the product is raised, the service life of the product is prolonged, processing of two heavy metals is canceled, processing cost is saved, the pollution of production and recovery links to the environment is reduced, and simultaneously severe harm to the environment and human health is also avoided.
Description
Technical field
The invention belongs to the cleaner production field of electroplating industry, relate in particular to a kind of brass base artificial headdress cadmium-free and lead-free 18K gold electro-plating method that is used for.
Background technology
In the Electroplating Production of the reality of artificial headdress, the technical process that the existing copper base is electroplated the 18K gold generally is: pre-treatment-multistage washing-platings alkali copper-multistage washing-electroplating bright acid copper-golden (containing the cadmium)-multistage washing-oven dry of multistage washing-brass plating tin (leaded)-multistage washing-plating 18K.Pre-treatment provides a clean Surface for the postorder electroplating work procedure; Electroplating alkali copper is in order to improve the bonding force of base material and subsequent plating layer; Electroplating bright acid copper is the light property for the outward appearance that improves artificial headdress; Brass plating tin is for the sour copper of light and two coating of 18K gold is spaced apart, prevents the phase mutual diffusion between coating, improves the work-ing life of product.Owing to when carrying out the plating of brass tin,, all can add poisonous metal lead in the additive in order to ensure the light property of layer of brass outward appearance.And the widest 18K gold of existing market use is the 18K gold of golden copper cadmium ternary alloy system.This just causes the copper base to be electroplated in the technology of 18K gold, has inevitably introduced harmful heavy metal cadmium and lead.Multistage washing between each plating mainly is for fear of the crossed contamination between plating, and the plate surface of a clean is provided for back one plating.
At copper tin is in the coating that constitutes of main alloying constituent, the mass percent of copper and two kinds of metals of tin greater than with equal 95%.The electroplate liquid of this type of coating that uses for large-scale industrialization, no matter the accounting what state of copper and tin changes in its coating, all can contain heavy metal lead in its electroplating additive, and generally the form with plumbic acetate adds, and plays increase coating luminance brightness.The copper tin coating generally has two kinds of outward appearances, and a kind of copper-nickel alloy tin of white, another kind are xanchromatic brass tin, and the content of tin is generally greater than 35% in the copper-nickel alloy tin, and the content of copper is generally greater than 80% in the brass tin.No leaded brass tin additive does not also have industrialized production marketing at present, has only the additive of unleaded copper-nickel alloy tin that sale is arranged on market.But commercially available unleaded copper-nickel alloy tin additive all exists sedimentation velocity slow, can use defectives such as the less and narrow range of cathode current density, and its sedimentation velocity is generally 1 micron of 2～3 minutes deposition, and cathode current density is generally 0.5～1.5A/dm
2In addition, also exist bath stability poor, technique controlling difficulty is big, defectives such as process maintenance cost height.
Aspect the plating of 18K gold, commonly used is the system of golden copper cadmium at present, and each metal quality per-cent is generally: gold accounts for 75%, and copper accounts for 20%, cadmium 5%.Because it contains the toxic heavy metal cadmium, use receiving more and more strict restriction.The current no cadmium 18K electroplate liquid that is used for the system of alternative 18K gold (containing cadmium); Mostly exist sedimentation velocity slow; Can use defectives such as the less and narrow range of cathode current density, its sedimentation velocity is generally 1 micron of 4～5 minutes deposition, and cathode current density is generally 0.5～1A/dm
2In addition, also exist technique controlling difficulty big, defectives such as process maintenance cost height.
Cadmium has serious harm with plumbous to environment and mankind itself's health, especially can cause people's intellectual development and healthy living to have a strong impact on.Contain cadmium and plumbous artificial headdress wear or removal process in, can infiltrate human body or environment, and build up and enrichment, and the cadmium in the human body and lead all are difficult for excreting through metabolism.Contain cadmium and plumbous jewellery in its manufacturing, use and removal process, all can cause to have a strong impact on ecotope and human health.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free, this method can improve the wear resistance of product, avoids environment and mankind itself's health are caused serious harm.
For realizing goal of the invention of the present invention, the technical scheme that the present invention adopts is: a kind of 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free, and it may further comprise the steps:
Pre-treatment-multistage washing-plating alkali copper-multistage washing-electroplating bright acid copper-multistage washing-the electroplate no cadmium 18K gold-multistage washing-oven dry of unleaded copper-nickel alloy-multistage washing-plating.
The cylinder preparation process of opening of unleaded copper-nickel alloy is:
(1) in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75～85% for plan;
(2) Pottasium Hydroxide with calculated amount slowly joins in the coating bath, and the limit edged stirs;
(3) after Pottasium Hydroxide dissolving finishes, plating bath is heated up and is controlled at 55 ℃～65 ℃;
(4) Potssium Cyanide with calculated amount joins in the coating bath, stirs to make it dissolving;
(5) the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving;
(6) potassium stannate with calculated amount joins coating bath, stirs to make it dissolving;
(7) filtered 20～30 hours with active carbon filter core, changed an active carbon filter core in per 4～6 hours, carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
(8) add brightening agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level, produce in batches examination plating back.
Said potassium stannate is 100～150 grams per liters, and cuprous cyanide is 14～28 grams per liters, and Pottasium Hydroxide is 18～32 grams per liters, and Potssium Cyanide is 45～65 grams per liters, and brightening agent is 8～12 milliliters/liter, and wetting agent is 1.5～2.5 milliliters/liter.
The cylinder preparation process of opening of no cadmium 18K gold is:
1) in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75～85% for plan, and plating bath is heated up and is controlled at 60 ℃～75 ℃;
2) Potssium Cyanide with calculated amount slowly joins in the coating bath, stirs to make it dissolving;
3) the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
4) filtered 20～30 hours active carbon filter core of replacing in per 4～6 hours with active carbon filter core; Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
5) potassium cyanaurite of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again;
6) silver potassium cyanide of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again;
7) add brightening agent, complexing agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level;
8) Pottasium Hydroxide with 1 ︰ 1 transfers to 9～11 with pH, and produce in batches examination plating back.
Said potassium cyanaurite is 3～7 grams per liters, and silver potassium cyanide is 190～370ppm, and cuprous cyanide is 25～32 grams per liters; Free potassuim cyanide is 9～15 grams per liters; Brightening agent is 15～25 milliliters/liter, and complexing agent is 0.5～1.5 milliliter/liter, and wetting agent is 4～6 milliliters/liter.
Prior art is compared, and the present invention has following beneficial effect:
One, the present invention has substituted brass tin (leaded) with unleaded copper-nickel alloy.Solve original 18K electroplating technology and can introduce the deficiency of heavy metal lead.Simultaneously; Because the hardness of unleaded copper-nickel alloy tin coating is 600HV0.05, and the hardness of brass tin (leaded) coating is 350HV0.05, the hardness of unleaded copper-nickel alloy tin coating is far above the hardness of brass tin (leaded) coating; Improve the wear resistance of product, prolonged the work-ing life of product.
Two, the unleaded copper-nickel alloy technology of the present invention's use, the cathode current density scope is 2～4 A/dm
2, sedimentation velocity is 1 micron of 1～1.5 minute deposition, sedimentation effect is high.
Three, the present invention has substituted 18K gold (containing cadmium) with no cadmium 18K gold, has solved the deficiency that original 18K electroplating technology can be introduced heavy metal cadmium.
Four, the no cadmium 18K gold electroplating technology of the present invention's use, the cathode current density scope is 0.5～1.5 A/dm
2, sedimentation velocity is 1 micron of 2～3 minutes deposition, sedimentation effect is high.
Five, the present invention has reduced the WWT kind and the processing cost of electroplating enterprise.Owing to do not have heavy metal cadmium and lead in the electroplating technology of the present invention, during WWT, just can cancel processing to these two heavy metals, practiced thrift processing cost.Also reduced simultaneously and produced and reclaimed the pollution of link environment.
Embodiment
Below the present invention is carried out detailed description.
The invention discloses a kind of 18K gold electroplating technology that is used for brass base artificial headdress cadmium-free and lead-free, its flow process is: the sour copper of pre-treatment-multistage washing-platings alkali copper-multistage washing-electroplating bright-multistage washing-the electroplate no cadmium 18K gold-multistage washing-oven dry of unleaded copper-nickel alloy-multistage washing-plating.
Pre-treatment among the present invention, alkali copper, bright sour copper adopt the existing conventional processing condition to carry out.
The unleaded copper-nickel alloy of usefulness among the present invention adopts following processing parameter:
Potassium stannate (K
2SnO
33H
2O) 100～150 grams per liters
Cuprous cyanide (CuCN) 14～28 grams per liters
Pottasium Hydroxide (KOH) 18～32 grams per liters
Free potassuim cyanide (KCN) 45～65 grams per liters
8～12 milliliters/liter of brightening agents
1.5～2.5 milliliters/liter of wetting agents
Anode graphite anode or ruthenium-iridium-tantalum net
55 ℃～65 ℃ of temperature
Cathode current density 2～4 A/dm
2
Owing to do not have heavy metal lead in the used brightening agent of the unleaded copper-nickel alloy among the present invention, so can not contain lead in the galvanized product yet.Thoroughly realized the unleaded plating of technological process.
Simultaneously; Because the hardness of unleaded copper-nickel alloy tin coating is 600HV0.05, and the hardness of brass tin (leaded) coating is 350HV0.05, the hardness of unleaded copper-nickel alloy tin coating is far above the hardness of brass tin (leaded) coating; Improve the wear resistance of product, prolonged the work-ing life of product.
No cadmium 18K gold among the present invention adopts following processing parameter:
Potassium cyanaurite (K [Au (CN)
2]) 3～7 grams per liters
Silver potassium cyanide (K [Ag (CN)
2]) 190～370ppm
Cuprous cyanide (CuCN) 25～32 grams per liters
Free potassuim cyanide (KCN) 9～15 grams per liters
15～25 milliliters/liter of brightening agents
0.5～1.5 milliliter/liter of complexing agent
4～6 milliliters/liter of wetting agents
Anode ruthenium-iridium-tantalum net
60 ℃～75 ℃ of temperature
pH 9～11
Current density 0.5～1.5 A/dm
2
Because no cadmium 18K gold is the ternary alloy coating of gold, silver and bronze among the present invention, realized the no cadmium plating in the technological process.Can substitute original golden copper cadmium ternary alloy coating fully, and appearance luster is also consistent with original golden copper cadmium alloy layer.
Owing in the 18K of brass base artificial headdress cadmium-free and lead-free disclosed by the invention gold electroplating technology, do not have heavy metal cadmium and lead, when carrying out WWT, just can cancel processing to these two heavy metals follow-up.Simultaneously, the hanger slag that in to electroplating process, produces, when the washing water of high density reclaims, also can cancel processing to these two heavy metals.Electroplating technology disclosed by the invention has not only reduced the cost of production and removal process, and has reduced the pollution to environment.
Instance one:
Near the operational instances of the content technology lower limit of each composition in the unleaded copper-nickel alloy plating bath.
Potassium stannate (K
2SnO
33H
2O) 105 grams per liters
Cuprous cyanide (CuCN) 15.5 grams per liters
Pottasium Hydroxide (KOH) 19.5 grams per liters
Free potassuim cyanide (KCN) 47 grams per liters
8.4 milliliters/liter of brightening agents
1.6 milliliters/liter of wetting agents
Anode graphite anode or ruthenium-iridium-tantalum net
60～65 ℃ of temperature
Cathode current density 2～2.5 A/dm
2
The cylinder preparation process of opening of unleaded copper-nickel alloy is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 85% for plan.
2, the Pottasium Hydroxide with calculated amount slowly joins in the coating bath, and the limit edged stirs, and to prevent local superheating, tank liquor splashes.
3, after Pottasium Hydroxide dissolving finishes, plating bath is heated up and is controlled at 60 ℃～65 ℃.
4, the Potssium Cyanide with calculated amount joins in the coating bath, stirs to make it dissolving.
5, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
6, the potassium stannate with calculated amount joins coating bath, stirs to make it dissolving.
7, filter with active carbon filter core, the time is 20 hours, active carbon filter core of replacing in per 4 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
8, add brightening agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level, produce in batches examination plating back.
Near the operational instances of the content technology lower limit of each composition in the no cadmium 18K gold plating bath.
Potassium cyanaurite (K [Au (CN)
2]) 3.4 grams per liters
Silver potassium cyanide (K [Ag (CN)
2]) 210ppm
Cuprous cyanide (CuCN) 26 grams per liters
Free potassuim cyanide (KCN) 9.5 grams per liters
16 milliliters/liter of brightening agents
0.6 milliliter/liter of complexing agent
4.2 milliliters/liter of wetting agents
Anode ruthenium-iridium-tantalum net
70 ℃～75 ℃ of temperature
pH 9～11
Current density 0.5～0.8 A/dm
2
The cylinder preparation process of opening of no cadmium 18K gold is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 85% for plan., plating bath is heated up and is controlled at 70 ℃～75 ℃.
2, the Potssium Cyanide with calculated amount slowly joins in the coating bath, stirs to make it dissolving.
3, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
4, filter with active carbon filter core, the time is 20 hours, active carbon filter core of replacing in per 4 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
5, the potassium cyanaurite of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
6, the silver potassium cyanide of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
7, add brightening agent, complexing agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level.
8, the Pottasium Hydroxide with 1 ︰ 1 transfers to 9～11 with pH, and produce in batches examination plating back.
Instance two:
Near the operational instances of the content technology upper limit of each composition in the unleaded copper-nickel alloy plating bath.
Potassium stannate (K
2SnO
33H
2O) 145 grams per liters
Cuprous cyanide (CuCN) 26.5 grams per liters
Pottasium Hydroxide (KOH) 30.5 grams per liters
Free potassuim cyanide (KCN) 63 grams per liters
11.6 milliliters/liter of brightening agents
2.4 milliliters/liter of wetting agents
Anode graphite anode or ruthenium-iridium-tantalum net
55～60 ℃ of temperature
Cathode current density 3.5～4 A/dm
2
The cylinder preparation process of opening of unleaded copper-nickel alloy is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75% for plan.
2, the Pottasium Hydroxide with calculated amount slowly joins in the coating bath, and the limit edged stirs, and to prevent local superheating, tank liquor splashes.
3, after Pottasium Hydroxide dissolving finishes, plating bath is heated up and is controlled at 55 ℃～60 ℃.
4, the Potssium Cyanide with calculated amount joins in the coating bath, stirs to make it dissolving.
5, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
6, the potassium stannate with calculated amount joins coating bath, stirs to make it dissolving.
7, filter with active carbon filter core, the time is 30 hours, active carbon filter core of replacing in per 6 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
8, add brightening agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level, produce in batches examination plating back.
Near the operational instances of the content technology upper limit of each composition in the no cadmium 18K gold plating bath.
Potassium cyanaurite (K [Au (CN)
2]) 6.6 grams per liters
Silver potassium cyanide (K [Ag (CN)
2]) 350ppm
Cuprous cyanide (CuCN) 31 grams per liters
Free potassuim cyanide (KCN) 14.5 grams per liters
24 milliliters/liter of brightening agents
1.4 milliliters/liter of complexing agents
5.8 milliliters/liter of wetting agents
Anode ruthenium-iridium-tantalum net
60 ℃～65 ℃ of temperature
pH 9～11
Current density 0.8～1.5 A/dm
2
The cylinder preparation process of opening of no cadmium 18K gold is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75% for plan., plating bath is heated up and is controlled at 60 ℃～65 ℃.
2, the Potssium Cyanide with calculated amount slowly joins in the coating bath, stirs to make it dissolving.
3, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
4, filter with active carbon filter core, the time is 30 hours, active carbon filter core of replacing in per 6 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
5, the potassium cyanaurite of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
6, the silver potassium cyanide of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
7, add brightening agent, complexing agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level.
8, the Pottasium Hydroxide with 1 ︰ 1 transfers to 9～11 with pH, and produce in batches examination plating back.
Instance three:
Near the operational instances of the content technology intermediate value of each composition in the unleaded copper-nickel alloy plating bath.
Potassium stannate (K
2SnO
33H
2O) 125 grams per liters
Cuprous cyanide (CuCN) 21 grams per liters
Pottasium Hydroxide (KOH) 25 grams per liters
Free potassuim cyanide (KCN) 55 grams per liters
10 milliliters/liter of brightening agents
2 milliliters/liter of wetting agents
Anode graphite anode or ruthenium-iridium-tantalum net
57～63 ℃ of temperature
Cathode current density 2.5～3.5 A/dm
2
The cylinder preparation process of opening of unleaded copper-nickel alloy is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 80% for plan.
2, the Pottasium Hydroxide with calculated amount slowly joins in the coating bath, and the limit edged stirs, and to prevent local superheating, tank liquor splashes.
3, after Pottasium Hydroxide dissolving finishes, plating bath is heated up and is controlled at 57 ℃～63 ℃.
4, the Potssium Cyanide with calculated amount joins in the coating bath, stirs to make it dissolving.
5, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
6, the potassium stannate with calculated amount joins coating bath, stirs to make it dissolving.
7, filter with active carbon filter core, the time is 25 hours, active carbon filter core of replacing in per 5 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
8, add brightening agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level, produce in batches examination plating back.
Near the operational instances of the content technology intermediate value of each composition in the no cadmium 18K gold plating bath.
Potassium cyanaurite (K [Au (CN)
2]) 5 grams per liters
Silver potassium cyanide (K [Ag (CN)
2]) 280ppm
Cuprous cyanide (CuCN) 28.5 grams per liters
Free potassuim cyanide (KCN) 12 grams per liters
20 milliliters/liter of brightening agents
1 milliliter/liter of complexing agent
5 milliliters/liter of wetting agents
Anode ruthenium-iridium-tantalum net
65 ℃～70 ℃ of temperature
pH 9～11
Current density 0.5～1.2 A/dm
2
The cylinder preparation process of opening of no cadmium 18K gold is:
1, in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 80% for plan., plating bath is heated up and is controlled at 65 ℃～70 ℃.
2, the Potssium Cyanide with calculated amount slowly joins in the coating bath, stirs to make it dissolving.
3, the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving.
4, filter with active carbon filter core, the time is 25 hours, active carbon filter core of replacing in per 5 hours.Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
5, the potassium cyanaurite of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
6, the silver potassium cyanide of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again.
7, add brightening agent, complexing agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level.
8, the Pottasium Hydroxide with 1 ︰ 1 transfers to 9～11 with pH, and produce in batches examination plating back.
Claims (5)
1. a 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free is characterized in that, may further comprise the steps:
Pre-treatment-multistage washing-plating alkali copper-multistage washing-electroplating bright acid copper-multistage washing-the electroplate no cadmium 18K gold-multistage washing-oven dry of unleaded copper-nickel alloy-multistage washing-plating.
2. the 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free according to claim 1 is characterized in that the cylinder preparation process of opening of unleaded copper-nickel alloy is:
(1) in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75～85% for plan;
(2) Pottasium Hydroxide with calculated amount slowly joins in the coating bath, and the limit edged stirs;
(3) after Pottasium Hydroxide dissolving finishes, plating bath is heated up and is controlled at 55 ℃～65 ℃;
(4) Potssium Cyanide with calculated amount joins in the coating bath, stirs to make it dissolving;
(5) the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving;
(6) potassium stannate with calculated amount joins coating bath, stirs to make it dissolving;
(7) filtered 20～30 hours with active carbon filter core, changed an active carbon filter core in per 4～6 hours, carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
(8) add brightening agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level, produce in batches examination plating back.
3. the 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free according to claim 2; It is characterized in that said potassium stannate is 100～150 grams per liters, cuprous cyanide is 14～28 grams per liters; Pottasium Hydroxide is 18～32 grams per liters; Potssium Cyanide is 45～65 grams per liters, and brightening agent is 8～12 milliliters/liter, and wetting agent is 1.5～2.5 milliliters/liter.
4. the 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free according to claim 1 is characterized in that the cylinder preparation process of opening of no cadmium 18K gold is:
1) in coating bath, add earlier deionized water, add-on is opened cylinder volumetrical 75～85% for plan, and plating bath is heated up and is controlled at 60 ℃～75 ℃;
2) Potssium Cyanide with calculated amount slowly joins in the coating bath, stirs to make it dissolving;
3) the cuprous cyanide elder generation water with calculated amount mixes into the mud shape, adds coating bath again, stirs and makes it dissolving;
4) filtered 20～30 hours active carbon filter core of replacing in per 4～6 hours with active carbon filter core; Carry out electrolysis simultaneously, current density is 0.1～0.3A/dm
2
5) potassium cyanaurite of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again;
6) silver potassium cyanide of calculated amount is first with behind 80 ℃～100 ℃ deionized water dissolvings, join in the coating bath again;
7) add brightening agent, complexing agent and gentle dose of calculated amount, add deionized water, tank liquor is supplemented to requires liquid level;
8) Pottasium Hydroxide with 1 ︰ 1 transfers to 9～11 with pH, and produce in batches examination plating back.
5. the 18K gold electro-plating method that is used for brass base artificial headdress cadmium-free and lead-free according to claim 4 is characterized in that said potassium cyanaurite is 3～7 grams per liters; Silver potassium cyanide is 190～370ppm; Cuprous cyanide is 25～32 grams per liters, and free potassuim cyanide is 9～15 grams per liters, and brightening agent is 15～25 milliliters/liter; Complexing agent is 0.5～1.5 milliliter/liter, and wetting agent is 4～6 milliliters/liter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204800.6A CN102817050B (en) | 2012-06-20 | 2012-06-20 | Brass base artificial headdress without cadmium without nickel unleaded 18K gold electro-plating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210204800.6A CN102817050B (en) | 2012-06-20 | 2012-06-20 | Brass base artificial headdress without cadmium without nickel unleaded 18K gold electro-plating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102817050A true CN102817050A (en) | 2012-12-12 |
| CN102817050B CN102817050B (en) | 2015-10-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105029846A (en) * | 2015-08-01 | 2015-11-11 | 柳州市旭平首饰有限公司 | Galvanic plating copper ornament |
| CN105109137A (en) * | 2015-08-01 | 2015-12-02 | 柳州市旭平首饰有限公司 | Vacuum plated copper jewelry |
| CN107059070A (en) * | 2017-04-21 | 2017-08-18 | 深圳市金玉福珠宝首饰有限公司 | A kind of electroforming process of karat gold ornaments |
| CN109778245A (en) * | 2019-04-02 | 2019-05-21 | 深圳市昊扬电铸技术开发有限公司 | A kind of electroforming solution for karat gold electroforming process |
| CN110724982A (en) * | 2019-03-18 | 2020-01-24 | 杭州埃迷丽珠宝有限公司 | Gold-fog electroplating process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085744A (en) * | 1990-11-06 | 1992-02-04 | Learonal, Inc. | Electroplated gold-copper-zinc alloys |
| EP0566054A1 (en) * | 1992-04-15 | 1993-10-20 | LeaRonal, Inc. | Electroplated gold-copper-silver alloys |
| CN101618616A (en) * | 2008-06-30 | 2010-01-06 | 比亚迪股份有限公司 | Zinc alloy product and preparation method thereof |
| CN101624714A (en) * | 2009-08-18 | 2010-01-13 | 杜强 | Cu-Sn-Zn plating solution containing organic addition agent and electroplating technique utilizing same |
-
2012
- 2012-06-20 CN CN201210204800.6A patent/CN102817050B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085744A (en) * | 1990-11-06 | 1992-02-04 | Learonal, Inc. | Electroplated gold-copper-zinc alloys |
| EP0566054A1 (en) * | 1992-04-15 | 1993-10-20 | LeaRonal, Inc. | Electroplated gold-copper-silver alloys |
| CN101618616A (en) * | 2008-06-30 | 2010-01-06 | 比亚迪股份有限公司 | Zinc alloy product and preparation method thereof |
| CN101624714A (en) * | 2009-08-18 | 2010-01-13 | 杜强 | Cu-Sn-Zn plating solution containing organic addition agent and electroplating technique utilizing same |
Non-Patent Citations (8)
| Title |
|---|
| 吴金泉: "金合金电镀工艺在手表行业的应用", 《材料保护》, 28 September 1989 (1989-09-28), pages 36 * |
| 周长虹 等: "白铜锡代镍工艺", 《电镀与环保》, vol. 22, no. 2, 31 March 2002 (2002-03-31), pages 6 - 7 * |
| 张允诚 等: "《电镀手册（第4版）》", 30 December 2011, article "电镀白铜锡" * |
| 张允诚等: "《电镀手册》", 30 December 2011, article "电镀铜基合金", pages: 312 * |
| 杜强: "电镀白铜锡代镍工艺", 《电镀与环保》, 30 September 2003 (2003-09-30) * |
| 袁国伟 等: "铜锡合金代镍电镀工艺的研究进展", 《电镀与环保》, vol. 22, no. 4, 31 July 2002 (2002-07-31), pages 3 * |
| 郭承忠 等: "低氰电镀光亮22K金工艺研究", 《电镀与涂饰》, vol. 25, no. 8, 31 August 2006 (2006-08-31), pages 13 - 15 * |
| 黎松强等: "18K金镀液的研制及黄金回收与精炼", 《黄金》, 31 May 2001 (2001-05-31), pages 50 - 52 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105029846A (en) * | 2015-08-01 | 2015-11-11 | 柳州市旭平首饰有限公司 | Galvanic plating copper ornament |
| CN105109137A (en) * | 2015-08-01 | 2015-12-02 | 柳州市旭平首饰有限公司 | Vacuum plated copper jewelry |
| CN107059070A (en) * | 2017-04-21 | 2017-08-18 | 深圳市金玉福珠宝首饰有限公司 | A kind of electroforming process of karat gold ornaments |
| CN110724982A (en) * | 2019-03-18 | 2020-01-24 | 杭州埃迷丽珠宝有限公司 | Gold-fog electroplating process |
| CN109778245A (en) * | 2019-04-02 | 2019-05-21 | 深圳市昊扬电铸技术开发有限公司 | A kind of electroforming solution for karat gold electroforming process |
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