CN103668192A - Four-element zinc-tin-nickel-iron soaking technique of aluminum alloy plate - Google Patents
Four-element zinc-tin-nickel-iron soaking technique of aluminum alloy plate Download PDFInfo
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- CN103668192A CN103668192A CN201210328380.2A CN201210328380A CN103668192A CN 103668192 A CN103668192 A CN 103668192A CN 201210328380 A CN201210328380 A CN 201210328380A CN 103668192 A CN103668192 A CN 103668192A
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Abstract
The invention relates to a four-element zinc-tin-nickel-iron soaking technique of an aluminum alloy plate, is characterized by comprising the following steps: (1) preparing an alkali solution, an acid solution, a four-element zinc-tin-nickel-iron alloy soaking solution, a zinc removal solution and a nickel plating solution; (2) removing oil; (3) washing with water for the first time; (4) etching with the alkali solution; (5) washing with water for the second time; (6) washing with acid; (7) washing with water for the third time; (8) soaking in the four-element zinc-tin-nickel-iron alloy for the first time; (9) removing zinc with nitric acid; (10) soaking in the four-element zinc-tin-nickel-iron alloy for the first time; and (11) nickel plating: carrying out nickel electroplating on the aluminum alloy plate soaked by the four-element zinc-tin-nickel-iron alloy for the second time, wherein the current density of the nickel electroplating is 10-20 A/cm<2>, the temperature of the nickel plating solution is 40-80 DEG C, the pH value of the nickel plating solution is 5-6, and the time is 1-10 seconds. The technique ensures the binding force favorable between the electroplated coating and the aluminum alloy plate, and thus, has the advantages of no blisters, no shedding, no scale, low cost and low pollution.
Description
Technical field
The present invention relates to a kind of electroplating technology, specifically a kind of aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary.
Background technology
Along with the fast development of electronic product, the big area of the more and more higher and LED lamp of chip integration, its heat dissipation problem bringing is on the rise.Because the solderability of aluminium is poor, at present normal employing method is first by carrying out electroless plating after aluminium flake impact briquetting or electroplating, to strengthen its weldability.The problem that this method exists binding force of cladding material poorly, time-consuming to take a lot of work, cost is high.
As weldable aluminum alloy sheets, also have plating process on direct employing aluminium, on aluminium, the key of plating process is to improve bonding force, removes the lip-deep oxide film of aluminium, and prevents that it from regenerating.Conventionally will be on aluminium base plating one deck with it in conjunction with firmly bottom or middle layer.
The combination of aluminium and underlying metal will meet the following conditions:
1. the complete surface of No oxided film and greasy dirt;
2. the underlying metal directly contacting with aluminium is more approaching with the lattice parameter of aluminium, and atomic radius is less;
3. if form alloy, there is higher solid solubility, be beneficial to the extension of coating on former settled layer.
At present, what as weldable aluminum alloy sheets, adopt plating process on aluminium is Ni plating on Al alloy technique, and this process using nickel, as solderable coating, exists the problem that binding force of cladding material is poor, cost is high, environmental pollution is serious.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and can guarantee that electrolytic coating and aluminium alloy plate can form the fine and close immersion plating layer of thin crystalline substance, bonding force is good, and cost is low, pollute few aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary.
According to technical scheme provided by the invention, a kind of aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary, and feature is: comprise following processing step:
(1) preparation alkali lye, acid solution, quaternary are soaked zinc-tin Rhometal liquid, dezincifying solution, nickel-plating liquid, stand-by;
The preparation of described alkali lye: sodium hydroxide 15～110g/L, sodium carbonate 15～60g/L, sodium phosphate 15～70g/L, Sodium Fluoride 1～15g/L, sodium lauryl sulphate 0.1～3g/L, all the other are water; Above-mentioned sodium hydroxide, sodium carbonate, sodium phosphate, Sodium Fluoride, sodium lauryl sulphate are hybridly prepared into alkali lye with water at normal temperatures;
The preparation of described acid solution: nitric acid 35～50g/L, sulfuric acid 7～15g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into acid solution with water at normal temperatures;
Described quaternary is soaked the preparation of zinc-tin Rhometal liquid: sodium hydroxide 130～400g/L, zinc oxide 13～100g/L, single nickel salt 3～70g/L, stannous sulfate content are that 10～80g/L, ferrous sulfate content are that 3～50g/L, Seignette salt 50～100g/L, sodium gluconate content are 50～200g/L, SODIUMNITRATE 2～10g/L, all the other are for water; Above-mentioned sodium hydroxide, zinc oxide, single nickel salt, stannous sulfate, ferrous sulfate, Seignette salt, sodium gluconate, SODIUMNITRATE are hybridly prepared into quaternary with water at normal temperatures and soak zinc-tin Rhometal liquid;
The preparation of described dezincifying solution: nitric acid 35～200g/L, sulfuric acid 7～80g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into dezincifying solution with water at normal temperatures;
The preparation of described nickel-plating liquid: single nickel salt 200～600g/L, boric acid 30～90g/L, nickelous chloride 50～200g/L, sodium laurylsulfonate 0.05～2g/L, all the other are water; Above-mentioned single nickel salt, boric acid, nickelous chloride, sodium laurylsulfonate are hybridly prepared into nickel-plating liquid with water at normal temperatures.
(2) oil removing: by aluminium alloy plate concentration be 10～60g/L aluminium with processing in alkaline defatting agent solution, aluminium is 50～80 ℃ by the temperature of alkaline defatting agent solution, 10～50 seconds time;
(3) once washing: the aluminium alloy plate after oil removing is used to washed with de-ionized water at normal temperatures;
(4) alkali lye etching: the aluminium alloy plate after once washing is processed in alkali lye, and alkali liquid temperature is 50～80 ℃, 10～40 seconds time;
(5) secondary washing: the aluminium alloy plate after alkali lye etching is used to washed with de-ionized water at normal temperatures;
(6) pickling: the aluminium alloy plate after secondary washing is cleaned in acid solution, and acid liquor temperature is 30～60 ℃, 3～20 seconds time;
(7) three washings: the aluminium alloy plate through pickling is used to washed with de-ionized water at normal temperatures;
(8) soak for the first time quaternary zinc-tin Rhometal: the aluminium alloy plate after three washings is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 25～60 ℃, 10～50 seconds time;
(9) nitric acid moves back zinc: will in dezincifying solution, process through the aluminium alloy plate soaking for the first time after quaternary zinc-tin Rhometal is processed, the temperature of dezincifying solution is 30～55 ℃, 1～20 second time;
(10) soak for the second time quaternary zinc-tin Rhometal: the aluminium alloy plate after nitric acid moves back zinc is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 35～80 ℃, 20～50 seconds time;
(11) nickel plating: the aluminium alloy plate through soaking for the second time after quaternary zinc-tin Rhometal is processed is carried out to electronickelling, and the current density of electronickelling is 10～20A/cm
2, the temperature of nickel-plating liquid is 40～80 ℃, the pH value of nickel-plating liquid is 5～7,1～10 second time.
The speed of a motor vehicle of described aluminium alloy plate is 0.5～60m/min.
The employing that oil removing of the present invention, alkali lye etching, nitric acid clean, soak quaternary zinc-tin Rhometal for the first time, move back zinc alloy, soak quaternary zinc-tin Rhometal, flash nickel process section has for the second time guaranteed that electrolytic coating and aluminium alloy plate can form the fine and close immersion plating layer of thin crystalline substance, bonding force is good, thus non-foaming, without coming off, non-scale, cost is low, pollution is few.
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described.
Aluminium used in the present invention adopts alkaline low-temperature aluminium alloy oil removing grease-removing agent with alkaline defatting agent.
Alkali lye etch step in the present invention can form the uneven surface of microcosmic injustice, to guarantee the bonding force of coating and matrix, after cleaning, peroxy-nitric acid can obtain altar mouth shape hole, these altar mouth shape holes play anchor effect to soaking zinc just, for obtaining the good subsequent plating layer of bonding force, have laid firm basis.After soaking for the second time quaternary zinc-tin Rhometal, obtain fine and close zinc-tin Rhometal layer, can guarantee the electrolytic coating bonding force that it is follow-up.
Embodiment mono-: a kind of aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary, comprises following processing step:
(1) preparation alkali lye, acid solution, quaternary are soaked zinc-tin Rhometal liquid, dezincifying solution, nickel-plating liquid, stand-by;
The preparation of described alkali lye: sodium hydroxide 15g/L, sodium carbonate 15g/L, sodium phosphate 15g/L, Sodium Fluoride 1g/L, sodium lauryl sulphate 0.1g/L, all the other are water; Sodium hydroxide, sodium carbonate, sodium phosphate, Sodium Fluoride, sodium lauryl sulphate are hybridly prepared into alkali lye with water at normal temperatures;
The preparation of described acid solution: nitric acid 35g/L, sulfuric acid 7g/L, all the other are water; Nitric acid, sulfuric acid are hybridly prepared into acid solution with water at normal temperatures;
Described quaternary is soaked the preparation of zinc-tin Rhometal liquid: sodium hydroxide 130g/L, zinc oxide 13g/L, single nickel salt 3g/L, stannous sulfate content are that 10g/L, ferrous sulfate content are that 3g/L, Seignette salt 50g/L, sodium gluconate content are 50g/L, SODIUMNITRATE 2g/L, all the other are for water; Sodium hydroxide, zinc oxide, single nickel salt, stannous sulfate, ferrous sulfate, Seignette salt, sodium gluconate, SODIUMNITRATE are hybridly prepared into quaternary with water at normal temperatures and soak zinc-tin Rhometal liquid;
The preparation of described dezincifying solution: nitric acid 35g/L, sulfuric acid 7g/L, all the other are water; Nitric acid, sulfuric acid are hybridly prepared into dezincifying solution with water at normal temperatures;
The preparation of described nickel-plating liquid: single nickel salt 200g/L, boric acid 30g/L, nickelous chloride 50g/L, sodium laurylsulfonate 0.05g/L, all the other are water; Single nickel salt, boric acid, nickelous chloride, sodium laurylsulfonate are hybridly prepared into nickel-plating liquid with water at normal temperatures.
(2) oil removing: by aluminium alloy plate concentration be 10g/L aluminium with processing in alkaline defatting agent solution, aluminium is 50 ℃ by the temperature of alkaline defatting agent solution, 10 seconds time;
(3) once washing: the aluminium alloy plate after oil removing is used to washed with de-ionized water at normal temperatures;
(4) alkali lye etching: the aluminium alloy plate after once washing is processed in alkali lye, and alkali liquid temperature is 50 ℃, 10 seconds time;
(5) secondary washing: the aluminium alloy plate after alkali lye etching is used to washed with de-ionized water at normal temperatures;
(6) pickling: the aluminium alloy plate after secondary washing is cleaned in acid solution, and acid liquor temperature is 30 ℃, 3 seconds time;
(7) three washings: the aluminium alloy plate through pickling is used to washed with de-ionized water at normal temperatures;
(8) soak for the first time quaternary zinc-tin Rhometal: the aluminium alloy plate after three washings is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 25 ℃, 10 seconds time;
(9) nitric acid moves back zinc: will in dezincifying solution, process through the aluminium alloy plate soaking for the first time after quaternary zinc-tin Rhometal is processed, the temperature of dezincifying solution is 30 ℃, 1 second time;
(10) soak for the second time quaternary zinc-tin Rhometal: the aluminium alloy plate after nitric acid moves back zinc is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 35 ℃, 20 seconds time;
(11) nickel plating: the aluminium alloy plate through soaking for the second time after quaternary zinc-tin Rhometal is processed is carried out to electronickelling, and the current density of electronickelling is 10A/cm
2, the temperature of nickel-plating liquid is 40 ℃, the pH value of nickel-plating liquid is 5,1 second time.
The speed of a motor vehicle of described aluminium alloy plate is 0.5m/min.
The weldable aluminum alloy sheets Deposit appearance that the present invention obtains is good, and bonding force is good, and adopting GB GB/T9286-1998 method to detect bonding force is 0 grade, and adopting SAT-5100 Weldability detector to test its wetting time is 1.2 seconds, and welding property is excellent.
Embodiment bis-: a kind of aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary, comprises following processing step:
(1) preparation alkali lye, acid solution, quaternary are soaked zinc-tin Rhometal liquid, dezincifying solution, nickel-plating liquid, stand-by;
The preparation of described alkali lye: sodium hydroxide 110g/L, sodium carbonate 60g/L, sodium phosphate 70g/L, Sodium Fluoride 15g/L, sodium lauryl sulphate 3g/L, all the other are water; Sodium hydroxide, sodium carbonate, sodium phosphate, Sodium Fluoride, sodium lauryl sulphate are hybridly prepared into alkali lye with water at normal temperatures;
The preparation of described acid solution: nitric acid 35～50g/L, sulfuric acid 7～15g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into acid solution with water at normal temperatures;
Described quaternary is soaked the preparation of zinc-tin Rhometal liquid: sodium hydroxide 400g/L, zinc oxide 100g/L, single nickel salt 70g/L, stannous sulfate content are that 80g/L, ferrous sulfate content are that 50g/L, Seignette salt 100g/L, sodium gluconate content are 200g/L, SODIUMNITRATE 10g/L, all the other are for water; Sodium hydroxide, zinc oxide, single nickel salt, stannous sulfate, ferrous sulfate, Seignette salt, sodium gluconate, SODIUMNITRATE are hybridly prepared into quaternary with water at normal temperatures and soak zinc-tin Rhometal liquid;
The preparation of described dezincifying solution: nitric acid 200g/L, sulfuric acid 80g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into dezincifying solution with water at normal temperatures;
The preparation of described nickel-plating liquid: single nickel salt 600g/L, boric acid 90g/L, nickelous chloride 200g/L, sodium laurylsulfonate 2g/L, all the other are water; Single nickel salt, boric acid, nickelous chloride, sodium laurylsulfonate are hybridly prepared into nickel-plating liquid with water at normal temperatures.
(2) oil removing: by aluminium alloy plate concentration be 60g/L aluminium with processing in alkaline defatting agent solution, aluminium is 80 ℃ by the temperature of alkaline defatting agent solution, 50 seconds time;
(3) once washing: the aluminium alloy plate after oil removing is used to washed with de-ionized water at normal temperatures;
(4) alkali lye etching: the aluminium alloy plate after once washing is processed in alkali lye, and alkali liquid temperature is 80 ℃, 40 seconds time;
(5) secondary washing: the aluminium alloy plate after alkali lye etching is used to washed with de-ionized water at normal temperatures;
(6) pickling: the aluminium alloy plate after secondary washing is cleaned in acid solution, and acid liquor temperature is 60 ℃, 20 seconds time;
(7) three washings: the aluminium alloy plate through pickling is used to washed with de-ionized water at normal temperatures;
(8) soak for the first time quaternary zinc-tin Rhometal: the aluminium alloy plate after three washings is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 60 ℃, 50 seconds time;
(9) nitric acid moves back zinc: will in dezincifying solution, process through the aluminium alloy plate soaking for the first time after quaternary zinc-tin Rhometal is processed, the temperature of dezincifying solution is 55 ℃, 20 seconds time;
(10) soak for the second time quaternary zinc-tin Rhometal: the aluminium alloy plate after nitric acid moves back zinc is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 80 ℃, 50 seconds time;
(11) nickel plating: the aluminium alloy plate through soaking for the second time after quaternary zinc-tin Rhometal is processed is carried out to electronickelling, and the current density of electronickelling is 20A/cm
2, the temperature of nickel-plating liquid is 80 ℃, the pH value of nickel-plating liquid is 7,10 seconds time.
The speed of a motor vehicle of described aluminium alloy plate is 60m/min.
The weldable aluminum alloy sheets Deposit appearance that the present invention obtains is good, and bonding force is good, and adopting GB GB/T9286-1998 method to detect bonding force is 0 grade, and adopting SAT-5100 Weldability detector to test its wetting time is 1.4 seconds, and welding property is excellent.
Embodiment tri-: a kind of aluminium alloy plate soaks zinc-tin ferronickel technique by quaternary, comprises following processing step:
(1) preparation alkali lye, acid solution, quaternary are soaked zinc-tin Rhometal liquid, dezincifying solution, nickel-plating liquid, stand-by;
The preparation of described alkali lye: sodium hydroxide 60g/L, sodium carbonate 40g/L, sodium phosphate 40g/L, Sodium Fluoride 8g/L, sodium lauryl sulphate 2g/L, all the other are water; Sodium hydroxide, sodium carbonate, sodium phosphate, Sodium Fluoride, sodium lauryl sulphate are hybridly prepared into alkali lye with water at normal temperatures;
The preparation of described acid solution: nitric acid 40g/L, sulfuric acid 11g/L, all the other are water; Nitric acid, sulfuric acid are hybridly prepared into acid solution with water at normal temperatures;
Described quaternary is soaked the preparation of zinc-tin Rhometal liquid: sodium hydroxide 260g/L, zinc oxide 60g/L, single nickel salt 35g/L, stannous sulfate content are that 45g/L, ferrous sulfate content are that 26g/L, Seignette salt 75g/L, sodium gluconate content are 125g/L, SODIUMNITRATE 6g/L, all the other are for water; Sodium hydroxide, zinc oxide, single nickel salt, stannous sulfate, ferrous sulfate, Seignette salt, sodium gluconate, SODIUMNITRATE are hybridly prepared into quaternary with water at normal temperatures and soak zinc-tin Rhometal liquid;
The preparation of described dezincifying solution: nitric acid 120g/L, sulfuric acid 44g/L, all the other are water; Nitric acid, sulfuric acid are hybridly prepared into dezincifying solution with water at normal temperatures;
The preparation of described nickel-plating liquid: single nickel salt 400g/L, boric acid 60g/L, nickelous chloride 125g/L, sodium laurylsulfonate 1g/L, all the other are water; Single nickel salt, boric acid, nickelous chloride, sodium laurylsulfonate are hybridly prepared into nickel-plating liquid with water at normal temperatures.
(2) oil removing: by aluminium alloy plate concentration be 35g/L aluminium with processing in alkaline defatting agent solution, aluminium is 65 ℃ by the temperature of alkaline defatting agent solution, 30 seconds time;
(3) once washing: the aluminium alloy plate after oil removing is used to washed with de-ionized water at normal temperatures;
(4) alkali lye etching: the aluminium alloy plate after once washing is processed in alkali lye, and alkali liquid temperature is 65 ℃, 25 seconds time;
(5) secondary washing: the aluminium alloy plate after alkali lye etching is used to washed with de-ionized water at normal temperatures;
(6) pickling: the aluminium alloy plate after secondary washing is cleaned in acid solution, and acid liquor temperature is 45 ℃, 12 seconds time;
(7) three washings: the aluminium alloy plate through pickling is used to washed with de-ionized water at normal temperatures;
(8) soak for the first time quaternary zinc-tin Rhometal: the aluminium alloy plate after three washings is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 45 ℃, 30 seconds time;
(9) nitric acid moves back zinc: will in dezincifying solution, process through the aluminium alloy plate soaking for the first time after quaternary zinc-tin Rhometal is processed, the temperature of dezincifying solution is 45 ℃, 10 seconds time;
(10) soak for the second time quaternary zinc-tin Rhometal: the aluminium alloy plate after nitric acid moves back zinc is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 60 ℃, 35 seconds time;
(11) nickel plating: the aluminium alloy plate through soaking for the second time after quaternary zinc-tin Rhometal is processed is carried out to electronickelling, and the current density of electronickelling is 15A/cm
2, the temperature of nickel-plating liquid is 60 ℃, the pH value of nickel-plating liquid is 6,5 seconds time.
The speed of a motor vehicle of described aluminium alloy plate is 32m/min.
The weldable aluminum alloy sheets Deposit appearance that the present invention obtains is good, and bonding force is good, and adopting GB GB/T9286-1998 method to detect bonding force is 0 grade, and adopting SAT-5100 Weldability detector to test its wetting time is 1.5 seconds, and welding property is excellent.
Claims (2)
1. aluminium alloy plate soaks a zinc-tin ferronickel technique by quaternary, and feature is: comprise following processing step:
(1) preparation alkali lye, acid solution, quaternary are soaked zinc-tin Rhometal liquid, dezincifying solution, nickel-plating liquid, stand-by;
The preparation of described alkali lye: sodium hydroxide 15～110g/L, sodium carbonate 15～60g/L, sodium phosphate 15～70g/L, Sodium Fluoride 1～15g/L, sodium lauryl sulphate 0.1～3g/L, all the other are water; Above-mentioned sodium hydroxide, sodium carbonate, sodium phosphate, Sodium Fluoride, sodium lauryl sulphate are hybridly prepared into alkali lye with water at normal temperatures;
The preparation of described acid solution: nitric acid 35～50g/L, sulfuric acid 7～15g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into acid solution with water at normal temperatures;
Described quaternary is soaked the preparation of zinc-tin Rhometal liquid: sodium hydroxide 130～400g/L, zinc oxide 13～100g/L, single nickel salt 3～70g/L, stannous sulfate content are that 10～80g/L, ferrous sulfate content are that 3～50g/L, Seignette salt 50～100g/L, sodium gluconate content are 50～200g/L, SODIUMNITRATE 2～10g/L, all the other are for water; Above-mentioned sodium hydroxide, zinc oxide, single nickel salt, stannous sulfate, ferrous sulfate, Seignette salt, sodium gluconate, SODIUMNITRATE are hybridly prepared into quaternary with water at normal temperatures and soak zinc-tin Rhometal liquid;
The preparation of described dezincifying solution: nitric acid 35～200g/L, sulfuric acid 7～80g/L, all the other are water; Above-mentioned nitric acid, sulfuric acid are hybridly prepared into dezincifying solution with water at normal temperatures;
The preparation of described nickel-plating liquid: single nickel salt 200～600g/L, boric acid 30～90g/L, nickelous chloride 50～200g/L, sodium laurylsulfonate 0.05～2g/L, all the other are water; Above-mentioned single nickel salt, boric acid, nickelous chloride, sodium laurylsulfonate are hybridly prepared into nickel-plating liquid with water at normal temperatures.
(2) oil removing: by aluminium alloy plate concentration be 10～60g/L aluminium with processing in alkaline defatting agent solution, aluminium is 50～80 ℃ by the temperature of alkaline defatting agent solution, 10～50 seconds time;
(3) once washing: the aluminium alloy plate after oil removing is used to washed with de-ionized water at normal temperatures;
(4) alkali lye etching: the aluminium alloy plate after once washing is processed in alkali lye, and alkali liquid temperature is 50～80 ℃, 10～40 seconds time;
(5) secondary washing: the aluminium alloy plate after alkali lye etching is used to washed with de-ionized water at normal temperatures;
(6) pickling: the aluminium alloy plate after secondary washing is cleaned in acid solution, and acid liquor temperature is 30～60 ℃, 3～20 seconds time;
(7) three washings: the aluminium alloy plate through pickling is used to washed with de-ionized water at normal temperatures;
(8) soak for the first time quaternary zinc-tin Rhometal: the aluminium alloy plate after three washings is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 25～60 ℃, 10～50 seconds time;
(9) nitric acid moves back zinc: will in dezincifying solution, process through the aluminium alloy plate soaking for the first time after quaternary zinc-tin Rhometal is processed, the temperature of dezincifying solution is 30～55 ℃, 1～20 second time;
(10) soak for the second time quaternary zinc-tin Rhometal: the aluminium alloy plate after nitric acid moves back zinc is processed in quaternary zinc-tin Rhometal liquid, and the temperature of quaternary zinc-tin Rhometal liquid is 35～80 ℃, 20～50 seconds time;
(11) nickel plating: the aluminium alloy plate through soaking for the second time after quaternary zinc-tin Rhometal is processed is carried out to electronickelling, and the current density of electronickelling is 10～20A/cm
2, the temperature of nickel-plating liquid is 40～80 ℃, the pH value of nickel-plating liquid is 5～7,1～10 second time.
2. a kind of aluminium alloy plate according to claim 1 soaks zinc-tin ferronickel technique by quaternary, it is characterized in that: the speed of a motor vehicle of described aluminium alloy plate is 0.5～60m/min.
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| CN106048569A (en) * | 2016-06-12 | 2016-10-26 | 含山县朝霞铸造有限公司 | Surface treatment method for aluminum alloy die casting and product thereof |
| CN108611668A (en) * | 2016-12-12 | 2018-10-02 | 中国航空工业标准件制造有限责任公司 | A method of improving cyanideless electro-plating zinc product presentation quality |
| CN113621949A (en) * | 2021-06-30 | 2021-11-09 | 郑州亨睿精密机械科技有限公司 | Aluminum alloy surface treatment process |
| CN116219359A (en) * | 2023-01-19 | 2023-06-06 | 杭州巨星科技股份有限公司 | Pretreatment method and application of aluminum alloy surface before magnetron sputtering coloring |
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| CN101278077A (en) * | 2004-12-20 | 2008-10-01 | 德国艾托科技公司 | Method for continuously operating acid or alkaline zinc or zinc alloy baths |
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