CN101634041B - Method and solution for electrogalvanizing surface of zinc alloy workpiece comprising blind hole - Google Patents
Method and solution for electrogalvanizing surface of zinc alloy workpiece comprising blind hole Download PDFInfo
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- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009713 electroplating Methods 0.000 claims abstract description 31
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 claims abstract description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011701 zinc Substances 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- 230000002378 acidificating effect Effects 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000005246 galvanizing Methods 0.000 claims abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 4
- 238000001994 activation Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- 230000007420 reactivation Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 238000007747 plating Methods 0.000 abstract description 25
- 238000005260 corrosion Methods 0.000 abstract description 23
- 230000007797 corrosion Effects 0.000 abstract description 22
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000003112 inhibitor Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 6
- 239000000080 wetting agent Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 29
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 10
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005406 washing Methods 0.000 description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 5
- 238000004512 die casting Methods 0.000 description 5
- 239000001103 potassium chloride Substances 0.000 description 5
- 235000011164 potassium chloride Nutrition 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011592 zinc chloride Substances 0.000 description 5
- 235000005074 zinc chloride Nutrition 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- MQKXWEJVDDRQKK-UHFFFAOYSA-N bis(6-methylheptyl) butanedioate Chemical compound CC(C)CCCCCOC(=O)CCC(=O)OCCCCCC(C)C MQKXWEJVDDRQKK-UHFFFAOYSA-N 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- HNSDLXPSAYFUHK-UHFFFAOYSA-N 1,4-bis(2-ethylhexyl) sulfosuccinate Chemical compound CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC HNSDLXPSAYFUHK-UHFFFAOYSA-N 0.000 description 1
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- QNEFNFIKZWUAEQ-UHFFFAOYSA-N carbonic acid;potassium Chemical compound [K].OC(O)=O QNEFNFIKZWUAEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 description 1
- 229960000878 docusate sodium Drugs 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- HRQDCDQDOPSGBR-UHFFFAOYSA-M sodium;octane-1-sulfonate Chemical compound [Na+].CCCCCCCCS([O-])(=O)=O HRQDCDQDOPSGBR-UHFFFAOYSA-M 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
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- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
本发明公开一种含盲孔锌合金工件表面电镀锌的方法及其溶液，其依次包括有锌合金工件表面清洗、活化、电镀、清冼、再活化、钝化步骤，其特征在于电镀锌溶液中含吖啶0.5～2g/l、琥珀酸二异辛酯磺酸钠0.05～0.2g/l，其余为普通酸性镀锌成分。所述的电镀锌溶液在电镀时将pH值调整为5.0～6.0，溶液温度保持在20～30℃，阴极电流密度为1～3A/dm3。本发明的优点在于：加入缓蚀剂后镀液对锌合金基体腐蚀小，加入润湿剂后盲孔深镀性能也好，最终得到的镀锌层结合力好、深镀性好，镀层也致密、耐蚀性好、提高了效率。The invention discloses a method for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes and its solution, which sequentially includes the steps of cleaning, activating, electroplating, cleaning, reactivating and passivating the surface of the zinc alloy workpiece, and is characterized in that the electrogalvanizing solution Contains 0.5-2g/l of acridine, 0.05-0.2g/l of di-isooctyl sodium sulfosuccinate, and the rest are ordinary acidic galvanizing components. The pH value of the zinc electroplating solution is adjusted to 5.0-6.0 during electroplating, the temperature of the solution is kept at 20-30° C., and the cathode current density is 1-3 A/dm 3 . The advantages of the present invention are: after the corrosion inhibitor is added, the plating solution has little corrosion on the zinc alloy substrate, and the blind hole deep plating performance is also good after the wetting agent is added, and the finally obtained galvanized layer has good bonding force and deep plating property, and the coating Compact, good corrosion resistance, improved efficiency.
Description
技术领域technical field
本发明涉及一种含盲孔锌合金工件表面电镀锌的溶液及方法，属于材料表面处理领域。The invention relates to a solution and a method for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes, and belongs to the field of material surface treatment.
背景技术Background technique
由于锌合金价格便宜、熔点低，特别是压铸工艺性能好，已经广泛用于制造小五金配件等。有的锌合金工件含有小尺寸的盲孔，在处理过程中需要较长时间，及在处理过程中需添加一些润湿剂。而且锌合金压铸件外表灰白，表面有各种缺陷，如：灰渣、缩孔等，因此在未经表面处理的情况下，其使用性和装饰性非常差。常见的表面处理方法是电镀。但是锌合金相对而言比较活泼，耐腐蚀性差，特别在酸性溶液中，比如在电镀过程中，由于电镀时间较长，需要添加一些缓蚀剂，预防锌合金的过腐蚀，减低成本，提高效率。Due to its cheap price, low melting point, and especially good die-casting process performance, zinc alloy has been widely used in the manufacture of small hardware accessories. Some zinc alloy workpieces contain small-sized blind holes, which take a long time to process, and some wetting agents need to be added during the process. Moreover, the appearance of zinc alloy die castings is gray and white, and there are various defects on the surface, such as: ash, shrinkage cavities, etc. Therefore, without surface treatment, its usability and decoration are very poor. A common surface treatment method is electroplating. However, zinc alloys are relatively lively and have poor corrosion resistance, especially in acidic solutions. For example, in the electroplating process, due to the long plating time, some corrosion inhibitors need to be added to prevent over-corrosion of zinc alloys, reduce costs, and improve efficiency. .
专利申请号为200610151222.9的中国专利“一种锌合金压铸件直接无氰电镀铜的方法”公开了一种锌合金压铸件电镀方法，a.阴极电解除油→b.有机酸洗活化→c.有机酸浸渍→d.直接电镀铜；所述的“d.直接电镀铜”的溶液的组成与工艺条件是：二价铜离子浓度10～25g/L，络合剂120～350g/L，碳酸钾10～50g/L，双氧水1～15mL/L，pH值保持在9～12之间，使用50％的氢氧化钾溶液调节pH值，阴极电流密度Dk＝0.5～2.5A/dm2，温度20～50℃，该发明既可用于锌合金压铸件直接预镀铜，也可用于电镀铜层加厚，其缺陷在于，没有润湿剂和缓蚀剂，不适合在含盲孔锌合金工件表面上电镀锌。Patent application number 200610151222.9 of the Chinese patent "A method for direct cyanide-free copper plating of zinc alloy die castings" discloses a zinc alloy die casting electroplating method, a. cathodic electrolytic degreasing → b. organic pickling activation → c. Organic acid immersion → d. direct electroplating copper; the composition and process conditions of the solution of "d. direct electroplating copper" are: divalent copper ion concentration 10 ~ 25g/L, complexing agent 120 ~ 350g/L, carbonic acid Potassium 10-50g/L, hydrogen peroxide 1-15mL/L, pH value maintained between 9-12, use 50% potassium hydroxide solution to adjust pH value, cathode current density D k = 0.5-2.5A/dm 2 , The temperature is 20-50°C. This invention can be used for direct copper pre-plating of zinc alloy die-casting parts, and can also be used for thickening the electroplated copper layer. The disadvantage is that there is no wetting agent and corrosion inhibitor, and it is not suitable for zinc alloy workpieces with blind holes. Galvanized on the surface.
综合上述，需要进一步改进。Based on the above, further improvement is needed.
发明内容Contents of the invention
本发明所要解决的首要技术问题是提供一种含盲孔锌合金工件表面电镀锌的方法，它有效地减少电镀液对锌合金基体腐蚀，而且盲孔深镀性能好，镀层也致密、耐蚀性好、提高了效率。The primary technical problem to be solved by the present invention is to provide a method for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes, which can effectively reduce the corrosion of the zinc alloy substrate by the electroplating solution, and the deep plating performance of blind holes is good, and the coating is dense and corrosion-resistant Good performance and improved efficiency.
本发明所要解决的另一个技术问题是提供一种含盲孔锌合金工件表面电镀锌的溶液，它有效地减少电镀液对锌合金基体腐蚀，而且盲孔深镀性能好，镀层也致密、耐蚀性好、提高了效率。Another technical problem to be solved by the present invention is to provide a solution for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes, which can effectively reduce the corrosion of the zinc alloy substrate by the electroplating solution, and the deep plating performance of blind holes is good, and the coating is also dense and durable. Good corrosion resistance and improved efficiency.
本发明解决上述首要技术问题所采用的技术方案为：一种含盲孔锌合金工件表面电镀锌的方法，其依次包括有锌合金工件表面清洗、活化、电镀、清冼、再活化、钝化步骤，其特征在于电镀锌溶液中含吖啶0.5～2g/l、琥珀酸二异辛酯磺酸钠0.05～0.2g/l，其余为普通酸性镀锌成分。The technical solution adopted by the present invention to solve the above-mentioned primary technical problems is: a method for electrogalvanizing the surface of zinc alloy workpieces containing blind holes, which sequentially includes surface cleaning, activation, electroplating, cleaning, reactivation, and passivation of zinc alloy workpieces. The step is characterized in that the electroplating zinc solution contains 0.5-2 g/l of acridine, 0.05-0.2 g/l of diisooctyl sodium sulfosuccinate, and the rest are common acidic zinc-plating components.
本发明解决上述另一个技术问题所采用的技术方案为：一种含盲孔锌合金工件表面电镀锌的溶液，其特征在于电镀锌溶液中含吖啶0.5～2g/l、琥珀酸二异辛酯磺酸钠0.05～0.2g/l，其余为普通酸性镀锌成分。The technical scheme adopted by the present invention to solve the above-mentioned another technical problem is: a solution for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes, which is characterized in that the electrogalvanizing solution contains 0.5-2 g/l of acridine and diisooctyl succinate Sodium ester sulfonate 0.05～0.2g/l, the rest is common acid galvanizing components.
所述的电镀锌溶液在电镀时将pH值调整为5.0～6.0，溶液温度保持在20～30℃，阴极电流密度为1～3A/dm3。把含盲孔锌合金工件经除油、清洗后放入镀液中施镀。The pH value of the zinc electroplating solution is adjusted to 5.0-6.0 during electroplating, the temperature of the solution is kept at 20-30° C., and the cathode current density is 1-3 A/dm 3 . Put the zinc alloy workpiece containing blind holes into the plating solution after degreasing and cleaning.
所述的锌合金工件中锌占质量分数的60％～90％，其余成分为铝或铜。In the zinc alloy workpiece, zinc accounts for 60% to 90% of the mass fraction, and the rest is aluminum or copper.
所述清洗则用去离子水超声波清洗。The cleaning is ultrasonic cleaning with deionized water.
与现有技术相比，本发明的优点在于：不加琥珀酸二异辛酯磺酸钠的镀锌配方，深为6mm的盲孔内壁就无法镀上，而含琥珀酸二异辛酯磺酸钠0.05～0.2g/l的电镀锌溶液则对于30mm的盲孔内壁依然能够镀上。镀液中不加吖啶，所得镀层有腐蚀小孔，而镀液中加了0.5～2g/l吖啶后，得到镀层完整，结合力好。Compared with the prior art, the present invention has the advantages of: without adding the galvanizing formula of diisooctyl sulfonate sodium succinate, the inner wall of the blind hole with a depth of 6 mm cannot be plated, and the inner wall of the blind hole containing dioctyl sulfosuccinate The electro-galvanizing solution of 0.05-0.2g/l sodium nitrate can still be plated on the inner wall of a 30mm blind hole. If no acridine is added to the plating solution, the resulting plating has small corrosion holes, but after adding 0.5-2g/l acridine to the plating solution, the plating is complete and has good bonding force.
具体实施方式Detailed ways
以下结合实施例对本发明作进一步详细描述。Below in conjunction with embodiment the present invention is described in further detail.
一种含有小型盲孔锌合金表面处理方法，其主要依次包括以下步骤：A zinc alloy surface treatment method containing small blind holes, which mainly includes the following steps in sequence:
碱冼、水冼、酸冼、水冼、活化、电镀、水冼、再活化、钝化、热水冼、冷水洗，在其中酸性氯化物电镀锌溶液中加入缓蚀剂吖啶0.5～2g/L、琥珀酸二异辛酯磺酸钠0.05～0.2g/L，本发明的优点在于：加入缓蚀剂后镀液对锌合金基体腐蚀小，加入润湿剂后盲孔深镀性能也好，最终得到的镀锌层结合力好、深镀性好，镀层也致密、耐蚀性好、提高了效率。Alkali washing, water washing, acid washing, water washing, activation, electroplating, water washing, reactivation, passivation, hot water washing, cold water washing, adding 0.5-2g of acridine, a corrosion inhibitor, to the acidic chloride electroplating solution /L, 0.05～0.2g/L of diisooctyl sodium sulfosuccinate, the advantage of the present invention is: after adding the corrosion inhibitor, the plating solution has little corrosion to the zinc alloy substrate, and the blind hole deep plating performance is also improved after adding the wetting agent. Well, the final galvanized layer has good bonding force, good deep-plating property, dense coating, good corrosion resistance, and improved efficiency.
而所述清洗则用去离子水超声波清洗。The cleaning is ultrasonic cleaning with deionized water.
具体实施例1Specific embodiment 1
用质量分数为60％的锌合金作为基体。酸性氯化物电镀锌溶液是：氯化锌70g/L，氯化钾200g/L，硼酸30g/L，吖啶2g/L，琥珀酸二异辛酯磺酸钠0.05g/L，光亮剂为杭州奥野科技实业有限公司提供ZINC ACK系列，其中光亮剂ACK-130ml/L、ACK-22ml/L，溶液温度30℃，阴极电流密度3A/dm2，pH值＝5.3，电镀时间50min。所得的镀层致密性好、深镀性好、光泽性很好、且耐腐蚀性能也好。在其他成分相同的情况下，A zinc alloy with a mass fraction of 60% is used as the matrix. The acidic chloride electroplating zinc solution is: zinc chloride 70g/L, potassium chloride 200g/L, boric acid 30g/L, acridine 2g/L, dioctyl sodium sulfosuccinate 0.05g/L, brightener is Hangzhou Aoye Technology Industrial Co., Ltd. provides ZINC ACK series, including brightener ACK-130ml/L, ACK-22ml/L, solution temperature 30℃, cathode current density 3A/dm 2 , pH value=5.3, electroplating time 50min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance. With other ingredients being the same,
实施例2Example 2
用质量分数为70％的锌合金作为基体.酸性氯化物电镀锌溶液是：氯化锌70g/L，氯化钾200g/L，硼酸30g/L，吖啶1.5g/L，琥珀酸二异辛酯磺酸钠0.1g/L，光亮剂为杭州奥野科技实业有限公司提供ZINC ACK系列，其中光亮剂ACK-130ml/L、ACK-22ml/L，溶液温度30℃，阴极电流密度3A/dm2，pH值＝5.3，电镀时间45min。所得的镀层致密性好、深镀性好、光泽性很好、且耐腐蚀性能也好。A zinc alloy with a mass fraction of 70% is used as the substrate. The acidic chloride electroplating zinc solution is: zinc chloride 70g/L, potassium chloride 200g/L, boric acid 30g/L, acridine 1.5g/L, diisosuccinic acid Sodium octyl sulfonate 0.1g/L, brightener ZINC ACK series provided by Hangzhou Aoye Technology Industrial Co., Ltd., among which brightener ACK-130ml/L, ACK-22ml/L, solution temperature 30 ℃, cathode current density 3A/dm 2 , pH value = 5.3, electroplating time 45min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance.
实施例3Example 3
用质量分数为80％的锌合金作为基体酸性氯化物电镀锌溶液是：氯化锌70g/L，氯化钾2000g/L，硼酸30g/L，吖啶1g/L，琥珀酸二异辛酯磺酸钠0.15g/L，光亮剂为杭州奥野科技实业有限公司提供ZINCACK系列，其中光亮剂ACK-130ml/L、ACK-22ml/L，溶液温度30℃，阴极电流密度3A/dm2，pH值＝5.3，电镀时间40min。所得的镀层致密性好、深镀性好、光泽性很好、且耐腐蚀性能也好。The zinc alloy with a mass fraction of 80% is used as the matrix acidic chloride electroplating zinc solution is: zinc chloride 70g/L, potassium chloride 2000g/L, boric acid 30g/L, acridine 1g/L, diisooctyl succinate Sodium sulfonate 0.15g/L, brightener ZINCACK series provided by Hangzhou Aoye Technology Industrial Co., Ltd., among which brightener ACK-130ml/L, ACK-22ml/L, solution temperature 30℃, cathode current density 3A/dm 2 , pH Value = 5.3, plating time 40min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance.
实施例4Example 4
用质量分数为90％的锌合金作为基体酸性氯化物电镀锌溶液是：氯化锌70g/L，氯化钾2000g/L，硼酸30g/L，吖啶0.5g/L，琥珀酸二异辛酯磺酸钠0.2g/L，光亮剂为杭州奥野科技实业有限公司提供ZINC ACK系列，其中光亮剂ACK-130ml/L、ACK-22ml/L，溶液温度30℃，阴极电流密度3A/dm3，pH值＝5.3，电镀时间30min。所得的镀层致密性好、深镀性好、光泽性很好、且耐腐蚀性能也好。The zinc alloy with a mass fraction of 90% is used as the matrix acidic chloride electroplating zinc solution is: zinc chloride 70g/L, potassium chloride 2000g/L, boric acid 30g/L, acridine 0.5g/L, diisooctyl succinate Sodium ester sulfonate 0.2g/L, brightener is ZINC ACK series provided by Hangzhou Aoye Technology Industrial Co., Ltd., among which brightener ACK-130ml/L, ACK-22ml/L, solution temperature 30℃, cathode current density 3A/dm 3 , pH value = 5.3, electroplating time 30min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance.
总之，由于锌合金比较活泼且工件含有盲孔，在电镀溶液中加一些缓蚀剂和润湿剂，它以氯化锌、氯化钾、硼酸为镀液的主要成分，吖啶为缓蚀剂，琥珀酸二异辛酯磺酸钠为润湿剂。使用方法：把所需的吖啶放入少量的去离子水中充分搅拌溶解；琥珀酸二异辛酯磺酸钠加入到少量去离子水中充分搅拌；两者再混合后一起加到镀液中再充分搅拌4～6min，把经过除油、除锈、活化的锌合金基体放入镀液中电镀之后再钝化，可得到结合力好且耐腐蚀的镀锌层。In short, since the zinc alloy is relatively active and the workpiece contains blind holes, some corrosion inhibitors and wetting agents are added to the electroplating solution. It uses zinc chloride, potassium chloride, and boric acid as the main components of the plating solution, and acridine as the corrosion inhibitor. agent, sodium dioctyl sulfosuccinate as wetting agent. How to use: Put the required acridine into a small amount of deionized water and stir to dissolve; add diisooctyl sodium sulfosuccinate into a small amount of deionized water and stir thoroughly; mix the two together and add them to the plating solution. Stir fully for 4-6 minutes, put the degreasing, derusting and activated zinc alloy substrate into the plating solution and then passivate it after electroplating, so as to obtain a galvanized layer with good bonding force and corrosion resistance.
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| CN102560567B (en) * | 2012-01-19 | 2015-03-11 | 朱育盼 | Method for electrogalvanizing on surface of zinc alloy workpiece with blind holes |
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| US5578187A (en) * | 1995-10-19 | 1996-11-26 | Enthone-Omi, Inc. | Plating process for electroless nickel on zinc die castings |
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| 匡海文.锌合金压铸件无氰镀锌.《电镀与精饰》.1990,第12卷(第5期), * |
| 张立茗等.实用电镀添加剂.《实用电镀添加剂》.张立茗等,2001, * |
| 鞠虹等.金属锌、铝的缓蚀剂研究进展.《腐蚀科学与防护技术》.2006,第18卷(第5期), * |
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