CN103160824A - Preparation method of aluminum alloy-organic aminophenol composite closing membrane, and closing membrane-forming solution - Google Patents
Preparation method of aluminum alloy-organic aminophenol composite closing membrane, and closing membrane-forming solution Download PDFInfo
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical compound NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000012528 membrane Substances 0.000 title abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 47
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims abstract description 24
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 claims abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 118
- 239000008367 deionised water Substances 0.000 claims description 93
- 229910021641 deionized water Inorganic materials 0.000 claims description 93
- 238000007789 sealing Methods 0.000 claims description 55
- 238000005238 degreasing Methods 0.000 claims description 37
- 238000005498 polishing Methods 0.000 claims description 32
- 230000000903 blocking effect Effects 0.000 claims description 19
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003112 inhibitor Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 33
- 238000003756 stirring Methods 0.000 description 26
- 238000004140 cleaning Methods 0.000 description 17
- 239000011651 chromium Substances 0.000 description 8
- 238000005237 degreasing agent Methods 0.000 description 7
- 239000013527 degreasing agent Substances 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- -1 zinc and steel Chemical class 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 238000007739 conversion coating Methods 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 description 1
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 1
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
Description
技术领域technical field
本发明涉及铝合金表面处理，尤其是一种铝合金有机胺酚复合封闭膜的制备方法及其成膜液。The invention relates to aluminum alloy surface treatment, in particular to a method for preparing an aluminum alloy organic amine-phenol composite closed film and a film-forming solution thereof.
背景技术Background technique
为提高铝和其他它金属如锌、钢铁的防腐蚀性能，传统方法是采用六价铬或热水直接封闭法。然而，六价铬有毒，在电器及电子工业中，欧盟RoHS法规(Restriction ofHazardous Substances，《关于限制在电子电器设备中使用某些有害成分的指令》)禁止使用六价铬化合物。为了满足环境友好工艺的需求，人们开发了各种无六价铬转化膜。最近的研究涉及到钛、钨、锡、锌及稀土盐等新型转化膜，由于它们的防腐蚀性能与六价铬还有一定差距，因此还未能进入实际应用；热水直接封闭法无毒，但防腐蚀性能较差，实际应用中，特别是在恶劣的环境中，会遇到难以克服的腐蚀问题。有机封闭膜符合RoHS法规，价格低廉，生产可操作性强，所以目前国内外对铝合金阳极氧化封闭膜研究比较多。可是，众所周知，底材性能不同，处理工艺也不同，因此铝合金阳极氧化封闭膜的工艺不能直接用于铝合金抛光后的表面处理。目前有关铝合金表面膜的报道，如西安建筑科技大学的中国专利“铝合金表面常温快速成膜液及其使用方法”(申请号200710017506.3申请日2007-03-15)，以及发明人早期的中国专利“铝或铝合金三价铬化学转化膜的制备方法”(申请号200710034656.5申请日2007-03-30)，这些都是无机膜，铝合金有机封闭膜报道较少，特别是用有机物胺酚进行复合成膜，还未见报道。In order to improve the corrosion resistance of aluminum and other metals such as zinc and steel, the traditional method is to use hexavalent chromium or hot water direct sealing method. However, hexavalent chromium is toxic. In the electrical and electronic industries, the EU RoHS regulations (Restriction of Hazardous Substances, "Instructions on Restricting the Use of Certain Hazardous Substances in Electrical and Electronic Equipment") prohibit the use of hexavalent chromium compounds. In order to meet the needs of environmentally friendly processes, various hexavalent chromium-free conversion coatings have been developed. Recent research involves new conversion coatings such as titanium, tungsten, tin, zinc, and rare earth salts. Because their anti-corrosion performance is still far behind that of hexavalent chromium, they have not yet entered practical application; the hot water direct sealing method is non-toxic , but its anti-corrosion performance is poor. In practical applications, especially in harsh environments, it will encounter insurmountable corrosion problems. The organic sealing film conforms to the RoHS regulations, is cheap, and has strong production operability. Therefore, there are currently many researches on the aluminum alloy anodic oxidation sealing film at home and abroad. However, as we all know, the performance of the substrate is different, and the treatment process is also different. Therefore, the process of aluminum alloy anodic oxidation sealing film cannot be directly used for surface treatment of aluminum alloy after polishing. At present, there are reports on aluminum alloy surface films, such as the Chinese patent "Aluminum alloy surface normal temperature rapid film-forming liquid and its application method" (application number 200710017506.3 application date 2007-03-15) of Xi'an University of Architecture and Technology, and the inventor's early Chinese Patent "Preparation method of aluminum or aluminum alloy trivalent chromium chemical conversion film" (application number 200710034656.5 application date 2007-03-30), these are inorganic films, and there are few reports on aluminum alloy organic sealing films, especially the use of organic aminophenols Composite film formation has not been reported yet.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种铝合金有机胺酚复合封闭膜的制备方法及其成膜液，改善了目前铝合金热水封闭膜的防腐蚀性能。The technical problem to be solved by the present invention is to provide a preparation method of an aluminum alloy organic amine-phenol composite sealing film and a film-forming solution thereof, which improves the anticorrosion performance of the current aluminum alloy hot water sealing film.
为解决上述技术问题本发明采用以下技术方案：一种铝合金有机胺酚封闭膜的成膜液，该成膜液含有：In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a film-forming liquid of an aluminum alloy organic amine-phenol sealed film, which contains:
邻苯二胺 0.1～20g/LO-phenylenediamine 0.1～20g/L
邻苯二酚 0.1～25g/L配制而成。It is formulated with catechol 0.1～25g/L.
该成膜液的pH值为7.0～10.0，温度为85～95℃。The pH value of the film-forming solution is 7.0-10.0, and the temperature is 85-95°C.
使用上述封闭液的铝合金有机胺酚复合封闭膜的制备方法，该方法包括以下步骤：The preparation method of the aluminum alloy organic aminophenol compound sealing film that uses above-mentioned sealing liquid, this method comprises the following steps:
<1>除油：将铝或铝合金工件表面的油脂去除，并用去离子水清洗干净；<1> Degreasing: remove the grease on the surface of the aluminum or aluminum alloy workpiece, and clean it with deionized water;
<2>抛光：将步骤<1>处理后的铝或铝合金工件在硫酸及硝酸配比为硫酸∶硝酸∶水＝1～6∶1～6∶0.1～1，温度为50～90℃的混酸中抛光20秒～6分钟，并用去离子水清洗干净；<2> Polishing: Put the aluminum or aluminum alloy workpiece processed in step <1> in a sulfuric acid and nitric acid ratio of sulfuric acid: nitric acid: water = 1 ~ 6: 1 ~ 6: 0.1 ~ 1, and the temperature is 50 ~ 90 ° C Polish in mixed acid for 20 seconds to 6 minutes, and clean with deionized water;
<3>封闭：将步骤<2>处理后的铝或铝合金工件在封闭液中封闭4～15分钟，并用去离子水清洗干净，再干燥即得到有机胺酚封闭膜。<3> Sealing: Seal the aluminum or aluminum alloy workpiece treated in step <2> in the blocking solution for 4 to 15 minutes, clean it with deionized water, and then dry to obtain the organic aminophenol sealing film.
干燥温度为65～85℃。The drying temperature is 65-85°C.
本发明在封闭溶液中加入了缓蚀剂邻苯二胺、邻苯二酚有机物，使用该封闭液处理铝或铝合金工件，能够在铝合金表面形成一层有机封闭膜。与传统的热水封闭相比，采用本发明的封闭膜提高了铝合金的防腐蚀性能，可接近六价铬封闭膜的防腐蚀效果(本发明封闭膜在3.5％的NaCl盐雾8天以上不生铝锈)，并且使用浓度低、成本低，操作简便，便于生产控制。另外，本发明未使用六价铬，工艺过程和产物都符合环保要求。The present invention adds corrosion inhibitor o-phenylenediamine and pyrocatechol organic matter into the sealing solution, uses the sealing solution to treat aluminum or aluminum alloy workpieces, and can form an organic sealing film on the surface of the aluminum alloy. Compared with traditional hot water sealing, adopting the sealing film of the present invention has improved the anticorrosion property of aluminum alloy, can approach the anticorrosion effect of hexavalent chromium sealing film (the sealing film of the present invention is more than 8 days in 3.5% NaCl salt spray No aluminum rust), and the use of low concentration, low cost, easy to operate, easy to production control. In addition, the present invention does not use hexavalent chromium, and the technological process and products meet the requirements of environmental protection.
附图说明Description of drawings
图1是本发明铝合金有机胺酚复合封闭膜的制备方法工艺流程图。Fig. 1 is a process flow diagram of the preparation method of the aluminum alloy organic amine-phenol composite sealing film of the present invention.
具体实施方式Detailed ways
图1显示了本发明铝合金有机胺酚复合封闭膜的制备方法工艺流程，其中建立除油浴、抛光浴、封闭浴以及清洗等步骤所用水均为去离子水。Fig. 1 shows the process flow of the preparation method of the aluminum alloy organic amine-phenol composite sealing membrane of the present invention, wherein the water used in the steps of setting up the degreasing bath, polishing bath, sealing bath and cleaning is deionized water.
实施例1 2024铝合金封闭Embodiment 1 2024 aluminum alloy closed
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂9KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , then add Henkel’s degreasing agent 9KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净。清洗干净后加入所需去离子水25KG、210KG硝酸、210KG硫酸，搅拌均匀。再升温度到90℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. After cleaning, add the required deionized water 25KG, 210KG nitric acid, 210KG sulfuric acid, and stir evenly. Then raise the temperature to 90°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入45克邻苯二胺、11.2KG邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至10.0，然后升温至95℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For a new container or a new production line, first clean it with 10% sulfuric acid solution, then clean it with deionized water, add 45 grams of phthalate Amine, 11.2KG catechol, diluted to 450L with deionized water, adjusted to pH 10.0 with 20% sodium hydroxide or 16% sulfuric acid, then heated to 95°C, stirred evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光20秒，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 20 seconds, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭15分钟，并用去离子水清洗2分钟至干净，再在65℃下干燥30分钟即得封闭膜。<3>Sealing: Seal the workpiece treated in step <2> in a sealing bath for 15 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 65°C for 30 minutes to obtain a sealing film.
实施例2 3003铝合金封闭Embodiment 2 3003 aluminum alloy closure
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂8KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , and then add Henkel's degreasing agent 8KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用水清洗干净，清洗干净后加入所需去离子水35KG、207KG硝酸、208KG硫酸，搅拌均匀。再升温度到50℃。B. Build a polishing bath: Please clean the container thoroughly before building the bath. For a new container or a new production line, first clean it with 10% sulfuric acid solution, then clean it with water, and then add the required deionized water 35KG , 207KG nitric acid, 208KG sulfuric acid, stir evenly. Then raise the temperature to 50°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入100克邻苯二胺、10KG邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至7.0，然后升温至85℃，搅拌均匀得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. Add 100 grams of phthalate Dilute amine and 10KG catechol with deionized water to 450L, adjust the pH value to 7.0 with 20% sodium hydroxide or 16% sulfuric acid, then raise the temperature to 85°C, and stir evenly to obtain a blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件放入抛光浴中抛光6分钟，并用去离子水清洗2分钟至干净；<2> Polishing: put the workpiece treated in step <1> into the polishing bath for 6 minutes, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭6分钟，并用去离子水清洗2分钟至干净，再在85℃下干燥30分钟即得封闭膜。<3>Sealing: Seal the workpiece treated in step <2> in a sealing bath for 6 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 85°C for 30 minutes to obtain a sealing film.
实施例3 4032铝合金封闭Embodiment 3 4032 aluminum alloy closed
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂9KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , then add Henkel’s degreasing agent 9KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用水清洗干净。清洗干净后加入所需去离子水4KG、223KG硝酸、223KG硫酸，搅拌均匀。再升温度到60℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with water. After cleaning, add the required deionized water 4KG, 223KG nitric acid, 223KG sulfuric acid, and stir evenly. Then raise the temperature to 60°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入9KG邻苯二胺、200克邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至8.0，然后升温至90℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 9KG o-phenylenediamine 1. Dilute 200 grams of catechol to 450 L with deionized water, adjust the pH value to 8.0 with 20% sodium hydroxide or 16% sulfuric acid, then heat up to 90° C., and stir evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光1分钟，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in the polishing bath for 1 minute, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭4分钟，并用去离子水清洗2分钟至干净，再在85℃下干燥30分钟即得封闭膜。<3>Sealing: Seal the workpiece treated in step <2> in a sealing bath for 4 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 85°C for 30 minutes to obtain a sealing film.
实施例4 5052铝合金封闭Embodiment 4 5052 aluminum alloy closure
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂8KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , and then add Henkel's degreasing agent 8KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净。清洗干净后加入所需去离子水10KG、220KG硝酸、220KG硫酸，搅拌均匀。再升温度到70℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. After cleaning, add the required deionized water 10KG, 220KG nitric acid, 220KG sulfuric acid, and stir evenly. Then raise the temperature to 70°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用水清洗干净，加入400克邻苯二胺、8KG邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至8.0，然后升温至85℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with water. Add 400 grams of o-phenylenediamine, 8KG Dilute catechol to 450L with deionized water, adjust the pH value to 8.0 with 20% sodium hydroxide or 16% sulfuric acid, then raise the temperature to 85°C, and stir evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光2分钟，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 2 minutes, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭8分钟，并用去离子水清洗2分钟至干净，再在65℃下干燥30分钟即得封闭膜。<3>Sealing: Seal the workpiece treated in step <2> in a sealing bath for 8 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 65°C for 30 minutes to obtain a sealing film.
实施例5 6061铝合金封闭Embodiment 5 6061 aluminum alloy closure
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂12KG Ridoline212，再用去离子水稀释到500L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , then add Henkel’s degreasing agent 12KG Ridoline212, and then dilute to 500L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用水清洗干净。清洗干净后加入所需去离子水50KG、200KG硝酸、200KG硫酸，搅拌均匀。再升温度到80℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with water. After cleaning, add the required deionized water 50KG, 200KG nitric acid, 200KG sulfuric acid, and stir evenly. Then raise the temperature to 80°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入6KG邻苯二胺、1000克邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至9.0，然后升温至90℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 6KG o-phenylenediamine 1,000 grams of catechol, diluted to 450L with deionized water, adjusted to pH 9.0 with 20% sodium hydroxide or 16% sulfuric acid, then heated to 90°C, stirred evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光4分钟，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 4 minutes, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭12分钟，并用去离子水清洗2分钟至干净，再在70℃下干燥30分钟即得。<3> Sealing: Seal the workpiece treated in step <2> in a sealing bath for 12 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 70°C for 30 minutes.
实施例6 6063铝合金封闭Embodiment 6 6063 aluminum alloy closure
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂10KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , then add Henkel’s degreasing agent 10KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用水清洗干净。清洗干净后加入所需去离子水90KG、180KG硝酸、180KG硫酸，搅拌均匀。再升温度到90℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with water. After cleaning, add the required deionized water 90KG, 180KG nitric acid, 180KG sulfuric acid, and stir evenly. Then raise the temperature to 90°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入2KG邻苯二胺、2KG邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至8.0，然后升温至90℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 2KG o-phenylenediamine 1. Dilute 2KG catechol to 450L with deionized water, adjust the pH value to 8.0 with 20% sodium hydroxide or 16% sulfuric acid, then heat up to 90°C, and stir evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光4分钟，并用去离子水清洗1分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 4 minutes, and wash it with deionized water for 1 minute until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭12分钟，并用去离子水清洗2分钟至干净，再在80℃下干燥30分钟即得。<3> Sealing: Seal the workpiece treated in step <2> in a sealing bath for 12 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 80°C for 30 minutes.
实施例7 7075铝合金封闭Embodiment 7 7075 aluminum alloy closure
A.建450L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水100L，然后加入汉高的除油剂10KG Ridoline212，再用去离子水稀释到450L，PH控制在7～9范围内，搅拌均匀。A. Build a 450L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 100L , then add Henkel’s degreasing agent 10KG Ridoline212, and then dilute to 450L with deionized water, control the pH within the range of 7 to 9, and stir evenly.
B.建450L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净。清洗干净后加入所需去离子水150KG、150KG硝酸、150KG硫酸，搅拌均匀。再升温度到60℃。B. Build a 450L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. After cleaning, add the required deionized water 150KG, 150KG nitric acid, 150KG sulfuric acid, and stir evenly. Then raise the temperature to 60°C.
C.建450L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入1KG邻苯二胺、8KG邻苯二酚，用去离子水稀释至450L，用20％氢氧化钠或16％的硫酸调节pH值至9.0，然后升温至90℃，搅拌均匀即得封闭液。C. Build a 450L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 1KG o-phenylenediamine , 8KG catechol, diluted to 450L with deionized water, adjusted to pH 9.0 with 20% sodium hydroxide or 16% sulfuric acid, then heated to 90°C, stirred evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光2分钟，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 2 minutes, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭10分钟，并用去离子水清洗2分钟至干净，再在70℃下干燥30分钟即得。<3> Sealing: Seal the workpiece treated in step <2> in a sealing bath for 10 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 70°C for 30 minutes.
实施例8 铝合金压铸件封闭Example 8 Aluminum Alloy Die Casting Closed
A.建300L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液50L清洗，再用去离子水清洗2次，每次用水60L，然后加入汉高的除油粉Ridoline2126KG释到300L，再稀释到300L，PH控制在7～9范围内，拌均匀。A. Build a 300L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 50L of 10% sulfuric acid solution, and then wash twice with deionized water, each time with 60L of water , and then add Henkel's degreasing powder Ridoline2126KG to release to 300L, then dilute to 300L, control the pH within the range of 7-9, and mix well.
B.建300L抛光浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净。清洗干净后加入所需去离子水2KG、149KG硝酸、149KG硫酸，搅拌均匀，再升温度到80℃。B. Build a 300L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. After cleaning, add the required deionized water 2KG, 149KG nitric acid, 149KG sulfuric acid, stir evenly, and then raise the temperature to 80°C.
C.建300L封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入2KG邻苯二胺、5KG邻苯二酚，用去离子水稀释至300L，用20％氢氧化钠或16％的硫酸调节pH值至8.0，然后升温至90℃，搅拌均匀即得封闭液。C. Build a 300L closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 2KG o-phenylenediamine 1. 5KG catechol, diluted to 300L with deionized water, adjusted to pH 8.0 with 20% sodium hydroxide or 16% sulfuric acid, then heated to 90°C, stirred evenly to obtain the blocking solution.
D.制备封闭膜：D. Preparation of blocking membrane:
<1>除油：将铝或铝合金工件放入篮中或挂在挂具上，经除油浴8分钟去除工件表面油脂，并用去离子水清洗2分钟至干净；<1> Degreasing: Put the aluminum or aluminum alloy workpiece in a basket or hang it on a hanger, remove the grease on the surface of the workpiece in a degreasing bath for 8 minutes, and wash it with deionized water for 2 minutes until it is clean;
<2>抛光：将步骤<1>处理后的工件在抛光浴中抛光6分钟，并用去离子水清洗2分钟至干净；<2> Polishing: Polish the workpiece treated in step <1> in a polishing bath for 6 minutes, and wash it with deionized water for 2 minutes until it is clean;
<3>封闭：将步骤<2>处理后的工件在封闭浴中封闭9分钟，并用去离子水清洗2分钟至干净，再80℃下干燥30分钟即得封闭膜。<3>Sealing: Seal the workpiece treated in step <2> in a sealing bath for 9 minutes, wash it with deionized water for 2 minutes until it is clean, and then dry it at 80°C for 30 minutes to obtain a sealing film.
对照例1 常规铝合金热水封闭实施Comparative example 1 Conventional aluminum alloy hot water sealing implementation
6063铝合金常规热水封闭6063 aluminum alloy conventional hot water closure
2.1)建400L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液40L清洗，再用去离子水清洗2次，每次用水80L，然后加入汉高的除油粉Ridoline2128KG释到400L，再用去离子水稀释到400L，PH控制在7～9范围内。2.1) Build a 400L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 40L of 10% sulfuric acid solution, then wash twice with deionized water, each time with 80L of water , and then add Henkel's degreasing powder Ridoline2128KG to release to 400L, then dilute to 400L with deionized water, and control the pH within the range of 7-9.
2.2)建400L抛光浴：：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，清洗干净后加入所需去离子水4KG、198KG硝酸、198KG硫酸，搅拌均匀。再升温度到80℃。2.2) Build a 400L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. Need deionized water 4KG, 198KG nitric acid, 198KG sulfuric acid, stir well. Then raise the temperature to 80°C.
2.3)建400L热水封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入400L去离子水，测量其PH值，如果PH值不在6-11.0范围内，则将用20％氢氧化钠或16％的硫酸调整至范围内。然后升温至80摄氏度，搅拌均匀即得热水封闭液。2.3) Build a 400L hot water closed bath: Please clean the container thoroughly before building the bath. For a new container or a new production line, first clean it with 10% sulfuric acid solution, then clean it with deionized water, and add 400L deionized water Water, measure its pH, if the pH is not in the range of 6-11.0, then adjust it with 20% sodium hydroxide or 16% sulfuric acid to be in range. Then heat up to 80 degrees Celsius, stir evenly to obtain hot water sealing solution.
2.4)待上述工作准备好后再将工件放入篮中或挂在挂具上，经过除油6分钟，清洗2分钟，抛光2分钟，清洗2分钟，热水封闭15分钟，最后清洗2分钟，80摄氏度下干燥30分钟，即获得热水封闭膜。2.4) After the above work is ready, put the workpiece into the basket or hang it on the hanger, after degreasing for 6 minutes, cleaning for 2 minutes, polishing for 2 minutes, cleaning for 2 minutes, hot water sealing for 15 minutes, and finally cleaning for 2 minutes , Dry at 80 degrees Celsius for 30 minutes to obtain a hot water sealing film.
对照例2 铝合金三价铬铬化按专利200710034656.5实施Comparative example 2 Trivalent chromium chromization of aluminum alloy is implemented according to patent 200710034656.5
6063铝合金三价铬封闭6063 aluminum alloy trivalent chromium closed
2.1)建400L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液40L清洗，再用去离子水清洗2次，每次用水80L，然后加入汉高的除油粉Ridoline2128KG释到400L，再用去离子水稀释到400L，PH控制在7～9范围内。2.1) Build a 400L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 40L of 10% sulfuric acid solution, then wash twice with deionized water, each time with 80L of water , and then add Henkel's degreasing powder Ridoline2128KG to release to 400L, then dilute to 400L with deionized water, and control the pH within the range of 7-9.
2.2)建400L抛光浴：：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，清洗干净后加入所需去离子水4KG、198KG硝酸、198KG硫酸，搅拌均匀。再升温度到80℃。2.2) Build a 400L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. Need deionized water 4KG, 198KG nitric acid, 198KG sulfuric acid, stir well. Then raise the temperature to 80°C.
2.3)建400L三价铬封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入15KG Cr2(SO4)3及磷酸6KG，用去离子水溶解，再加去离子水至400L，搅拌均匀，测量其PH值，如果PH值不在1.8-4.0范围内，则将用20％氢氧化钠或16％的硫酸调整至范围内。然后升温至40-50摄氏度，搅拌均匀即得封闭液。2.3) Build a 400L trivalent chromium closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 15KG Cr 2 (SO 4 ) 3 and phosphoric acid 6KG, dissolve in deionized water, add deionized water to 400L, stir evenly, measure the pH value, if the pH value is not in the range of 1.8-4.0, then use 20% sodium hydroxide Or 16% sulfuric acid to adjust to the range. Then raise the temperature to 40-50 degrees Celsius, stir evenly to obtain the blocking solution.
2.4)待上述工作准备好后再将工件放入篮中或挂在挂具上，经过除油6分钟，清洗2分钟，活化2分钟，清洗2分钟，铬化6分钟，最后清洗2分钟，90摄氏度下干燥30分钟，即获得淡绿色的三价铬封闭膜。2.4) After the above work is ready, put the workpiece into the basket or hang it on the hanger, after degreasing for 6 minutes, cleaning for 2 minutes, activation for 2 minutes, cleaning for 2 minutes, chroming for 6 minutes, and finally cleaning for 2 minutes, Dry at 90 degrees Celsius for 30 minutes to obtain a light green trivalent chromium sealing film.
对照例3 常规铝合金六价铬铬化Comparative Example 3 Chromization of conventional aluminum alloy with hexavalent chromium
6063铝合金六价铬封闭6063 aluminum alloy hexavalent chromium closed
2.1)建400L除油浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液40L清洗，再用去离子水清洗2次，每次用水80L，然后加入汉高的除油粉Ridoline212 8KG释到400L，再用去离子水稀释到400L，PH控制在7～9范围内。2.1) Build a 400L degreasing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first wash with 40L of 10% sulfuric acid solution, then wash twice with deionized water, each time with 80L of water , then add Henkel’s degreasing powder Ridoline212 8KG to release to 400L, then dilute to 400L with deionized water, and control the pH within the range of 7-9.
2.2)建400L抛光浴：：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，清洗干净后加入所需去离子水4KG、198KG硝酸、198KG硫酸，搅拌均匀。再升温度到80℃。2.2) Build a 400L polishing bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, clean them with 10% sulfuric acid solution first, and then clean them with deionized water. Need deionized water 4KG, 198KG nitric acid, 198KG sulfuric acid, stir well. Then raise the temperature to 80°C.
2.3)建400L六价铬封闭浴：在建浴前请将容器彻底清洗干净，对于新的容器或新的生产线，先用10％硫酸溶液清洗，然后再用去离子水清洗干净，加入20KG K2Cr2O7及磷酸8KG，用去离子水溶解，再加去离子水至400L，测量其PH值，如果PH值不在1.8-4.0范围内，则将用20％氢氧化钠或16％的硫酸调整至范围内。然后升温至50-60摄氏度，搅拌均匀即得六价铬封闭浴。2.3) Build a 400L hexavalent chromium closed bath: Please clean the container thoroughly before building the bath. For new containers or new production lines, first clean them with 10% sulfuric acid solution, then clean them with deionized water, and add 20KG K 2 Cr 2 O 7 and phosphoric acid 8KG, dissolve with deionized water, add deionized water to 400L, measure the pH value, if the pH value is not in the range of 1.8-4.0, then use 20% sodium hydroxide or 16% Sulfuric acid is adjusted to the range. Then heat up to 50-60 degrees Celsius, and stir evenly to obtain a closed bath of hexavalent chromium.
2.4)待上述工作准备好后再将工件放入篮中或挂在挂具上，经过除油6分钟，清洗2分钟，活化2分钟，清洗2分钟，铬化6分钟，最后清洗2分钟，90摄氏度下干燥30分钟，即获得金黄色的六价铬封闭膜。2.4) After the above work is ready, put the workpiece into the basket or hang it on the hanger, after degreasing for 6 minutes, cleaning for 2 minutes, activation for 2 minutes, cleaning for 2 minutes, chroming for 6 minutes, and finally cleaning for 2 minutes, Dry at 90 degrees Celsius for 30 minutes to obtain a golden hexavalent chromium sealing film.
对上述经实施例1至8和对照例1至3处理所得铝合金工件进行质量检测，其防腐蚀性能技术指标结果如表1所示。The above-mentioned aluminum alloy workpieces obtained through the treatment of Examples 1 to 8 and Comparative Examples 1 to 3 were inspected for quality, and the results of technical indicators of anti-corrosion performance are shown in Table 1.
表1：防腐蚀性能技术指标比较表Table 1: Comparison table of anti-corrosion performance technical indicators
结论：本发明的有机胺酚复合封闭膜的防腐性能远远超过过去的常规的铝合金热水封闭膜，与三价铬、六价铬转化膜相当。Conclusion: The anti-corrosion performance of the organic amine-phenol composite sealing film of the present invention far exceeds that of the conventional aluminum alloy hot water sealing film in the past, and is equivalent to the conversion film of trivalent chromium and hexavalent chromium.
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| WO2018119376A1 (en) | 2016-12-22 | 2018-06-28 | Henkel Ag & Co. Kgaa | Treatment of conversion-coated metal substrates with preformed reaction products of catechol compounds and functionalized co-reactant compounds |
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