CN110273160A - A kind of aluminum alloy surface corrosion removal means of defence - Google Patents
A kind of aluminum alloy surface corrosion removal means of defence Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 168
- 238000005260 corrosion Methods 0.000 title claims abstract description 91
- 230000007797 corrosion Effects 0.000 title claims abstract description 74
- 239000003112 inhibitor Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 238000010301 surface-oxidation reaction Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims description 33
- 230000000996 additive effect Effects 0.000 claims description 28
- 239000002904 solvent Substances 0.000 claims description 27
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000002562 thickening agent Substances 0.000 claims description 16
- 239000003945 anionic surfactant Substances 0.000 claims description 14
- 150000007522 mineralic acids Chemical class 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- 239000007800 oxidant agent Substances 0.000 claims description 8
- 239000004480 active ingredient Substances 0.000 claims description 7
- 238000009736 wetting Methods 0.000 claims description 6
- 239000002932 luster Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 150000003839 salts Chemical group 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 239000006071 cream Substances 0.000 claims 14
- 125000001931 aliphatic group Chemical group 0.000 claims 3
- -1 alcohol ether analog Chemical class 0.000 claims 2
- 239000000470 constituent Substances 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 239000013556 antirust agent Substances 0.000 description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 9
- 230000018044 dehydration Effects 0.000 description 9
- 238000006297 dehydration reaction Methods 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
本发明涉及一种铝合金表面去腐蚀防护方法，包括铝合金表面腐蚀部位浮锈的去除步骤；铝合金表面深层腐蚀产物的去除步骤；铝合金表面氧化步骤；铝合金去腐后表面防护步骤。本方法采用铝合金去腐蚀产物膏对铝合金表面的腐蚀产物进行去除，既能快速、有效地去除铝合金表面的腐蚀产物，又消除了除锈过程中化学试剂对于铝合金表面未腐蚀部位的不利影响；然后采用铝合金表面氧化膏对铝合金表面进行氧化，生成一层与有机膜层结合力好并有一定防腐蚀能力的防护膜；最后通过涂敷缓蚀剂或有机涂料等，以达到最终防护的目的。The invention relates to a corrosion protection method for an aluminum alloy surface, which comprises a step of removing floating rust on the corrosion part of the aluminum alloy surface; a step of removing deep layer corrosion products on the surface of the aluminum alloy; a step of oxidizing the surface of the aluminum alloy; and a step of protecting the surface of the aluminum alloy after corrosion removal. The method uses the aluminum alloy corrosion product paste to remove the corrosion products on the aluminum alloy surface, which can not only quickly and effectively remove the corrosion products on the aluminum alloy surface, but also eliminate the impact of chemical reagents on the uncorroded parts of the aluminum alloy surface during the rust removal process. Adverse effects; then use the aluminum alloy surface oxidation paste to oxidize the aluminum alloy surface to form a protective film with good adhesion to the organic film layer and a certain anti-corrosion ability; finally, by coating corrosion inhibitors or organic coatings, etc., to To achieve the purpose of ultimate protection.
Description
技术领域technical field
本发明涉及铝合金材料去腐蚀的技术领域，具体涉及一种铝合金表面去腐蚀防护方法。The invention relates to the technical field of corrosion removal of aluminum alloy materials, in particular to a corrosion protection method for aluminum alloy surfaces.
背景技术Background technique
铝合金材料具备强度高、比重低、成形能力良好等一系列突出的优点，现已广泛应用于航空航天、建筑、机械自动化等领域。然而，在使用过程中，随着阳极化表面或表面防护涂层的失效，铝合金表面极易受到大气环境的腐蚀侵害，从而引起设备存在严重的安全隐患。因此，需要对铝合金表面的腐蚀产物及时地进行去除，并对清理部位进行防护，以保障设备的使用安全和使用寿命。Aluminum alloy materials have a series of outstanding advantages such as high strength, low specific gravity and good formability, and have been widely used in aerospace, construction, mechanical automation and other fields. However, during use, with the failure of the anodized surface or surface protective coating, the aluminum alloy surface is extremely vulnerable to corrosion from the atmospheric environment, which causes serious safety hazards in the equipment. Therefore, it is necessary to remove the corrosion products on the surface of the aluminum alloy in a timely manner and protect the cleaned parts to ensure the safety and service life of the equipment.
通常用于铝合金表面去腐蚀的手工除锈、化学溶液除锈及机械喷丸(砂)除锈等方法具有除锈质量较差、深层的锈层不易完全去除、劳动强度较大、容易造成二次腐蚀等缺点，并且目前缺少方便、快捷、有效的防护手段。The methods of manual derusting, chemical solution derusting and mechanical shot blasting (sand) derusting, which are usually used to remove corrosion on the surface of aluminum alloys, have poor derusting quality, difficult to completely remove deep rust layers, high labor intensity, and easy to cause corrosion. Secondary corrosion and other shortcomings, and currently lack of convenient, fast and effective means of protection.
发明内容Contents of the invention
发明的目的：给出既可以快速、有效地去除铝合金表面的腐蚀产物，又在清理部位形成一层防腐蚀膜层，满足设备维护、修理的需要的方法；且该方法不会对设备产生不利影响，同时方法具有简单、可行等特点，最终保障设备可以长期、安全的使用。The purpose of the invention: to provide a method that can quickly and effectively remove corrosion products on the surface of aluminum alloys, and form a layer of anti-corrosion film on the cleaned parts to meet the needs of equipment maintenance and repair; and the method will not cause damage to the equipment. Adverse effects, at the same time, the method is simple and feasible, and finally ensures that the equipment can be used safely for a long time.
本发明的技术方案：提供一种铝合金表面去腐蚀防护方法，包括以下步骤：The technical solution of the present invention: provide a method for corrosion protection of aluminum alloy surface, comprising the following steps:
步骤1、铝合金表面腐蚀部位浮锈的去除Step 1. Removal of floating rust on the corroded parts of the aluminum alloy surface
对铝合金表面腐蚀部位进行机械打磨，打磨至表面露出金属光泽，使用有机溶剂对打磨后的表面进行清洁；Mechanically polish the corroded parts of the aluminum alloy surface until the surface reveals a metallic luster, and use an organic solvent to clean the polished surface;
步骤2、铝合金表面深层腐蚀产物的去除Step 2. Removal of deep corrosion products on the aluminum alloy surface
对机械打磨后的铝合金表面涂敷铝合金去腐蚀产物膏，涂敷后保持0.5h～2h；当去腐蚀产物膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply aluminum alloy anti-corrosion product paste to the surface of aluminum alloy after mechanical polishing, and keep it for 0.5h~2h after application; when the anti-corrosion product paste is dry, clean the coated area to remove the attachment on the aluminum alloy surface;
步骤3、铝合金表面氧化Step 3, aluminum alloy surface oxidation
对涂敷过铝合金去腐蚀产物膏的铝合金表面涂敷铝合金表面氧化膏，所述氧化膏涂敷后保持0.5h～2h；当铝合金表面氧化膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply an aluminum alloy surface oxide paste to the aluminum alloy surface coated with aluminum alloy corrosion product paste, and keep the oxide paste for 0.5h to 2h after application; when the aluminum alloy surface oxide paste is dry, clean the coated area , remove aluminum alloy surface attachments;
步骤4、铝合金去腐后表面防护Step 4. Surface protection of aluminum alloy after decorrosion
对氧化后的铝合金表面涂覆缓蚀剂或有机涂料，形成铝合金表面的保护膜层。Coating corrosion inhibitor or organic paint on the surface of the oxidized aluminum alloy to form a protective film on the surface of the aluminum alloy.
进一步的，所述的铝合金去腐蚀产物膏是由无机稠化剂、无机酸、阴离子表面活性剂、无机防锈剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：5～10：20～40；无机稠化剂在所述去腐蚀产物膏中起到载体作用，使得所述去腐蚀产物膏能够黏在铝合金表面；无机酸为除锈活性成分，能够与铝合金腐蚀产物发生化学反应并生成化学产物，所述化学产物易于脱离铝合金表面；阴离子表面活性剂为添加剂，能够提高所述去腐蚀产物膏对铝合金表面的润湿能力；无机防锈剂为添加剂，适配于无机酸，用于保护铝合金基材不会被无机酸腐蚀；去离子水为溶剂。优选地，所述化学产物为盐。Further, the aluminum alloy anti-corrosion product paste is composed of inorganic thickener, inorganic acid, anionic surfactant, inorganic antirust agent and deionized water uniformly mixed: the mass percentage of each component is 25-50: 10～20: 5～10: 5～10: 20～40; the inorganic thickener acts as a carrier in the corrosion-removing product paste, so that the corrosion-removing product paste can stick to the surface of the aluminum alloy; the inorganic acid is The rust-removing active ingredient can chemically react with aluminum alloy corrosion products to generate chemical products, which are easy to detach from the aluminum alloy surface; the anionic surfactant is an additive, which can improve the wetting of the corrosion-removing product paste on the aluminum alloy surface Wet ability; inorganic antirust agent is an additive, suitable for inorganic acid, used to protect aluminum alloy substrates from being corroded by inorganic acid; deionized water is a solvent. Preferably, the chemical product is a salt.
进一步的，所述的铝合金表面氧化膏由无机稠化剂、无机氧化剂、阴离子表面活性剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：15～30：5～10：20～40；无机稠化剂在所述氧化膏中起到载体作用，使得所述氧化膏能够黏在铝合金表面；无机氧化剂为氧化活性成分，能够与铝合金表面氧化生成致密氧化膜层；阴离子表面活性剂为添加剂，能够提高所述氧化膏对铝合金表面的润湿能力；去离子水为溶剂。Further, the aluminum alloy surface oxidation paste is composed of inorganic thickener, inorganic oxidant, anionic surfactant and deionized water uniformly mixed: the mass percentage of each component is 25-50: 15-30: 5-10 : 20-40; the inorganic thickener acts as a carrier in the oxide paste, so that the oxide paste can stick to the surface of the aluminum alloy; the inorganic oxidant is an oxidation active component, which can oxidize with the aluminum alloy surface to form a dense oxide film layer ; Anionic surfactant is an additive, which can improve the wetting ability of the oxide paste to the aluminum alloy surface; deionized water is a solvent.
进一步的，所述的缓蚀剂是由有机成膜剂、有机防锈剂、有机脱水添加剂、脂肪烃溶剂和醇醚类助剂均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：20～40：5～10；有机成膜剂为成膜物质，能够在铝合金表面形成透明膜层；有机防锈剂为防护活性成分，能够延缓铝合金表面的腐蚀；有机脱水添加剂，能够脱除铝合金表面的水分；脂肪烃溶剂为溶剂；醇醚类助剂为添加剂，能够使有机成膜剂、有机防锈剂和有机脱水添加剂溶于脂肪烃溶剂。Further, the corrosion inhibitor is composed of an organic film-forming agent, an organic antirust agent, an organic dehydration additive, an aliphatic hydrocarbon solvent and alcohol ether additives: the mass percentage of each component is 25-50:10 ～20: 5～10: 20～40: 5～10; organic film-forming agent is a film-forming substance that can form a transparent film on the surface of aluminum alloy; organic antirust agent is a protective active ingredient that can delay the corrosion of aluminum alloy surface The organic dehydration additive can remove the moisture on the aluminum alloy surface; the aliphatic hydrocarbon solvent is used as the solvent; the alcohol ether auxiliary agent is used as the additive, which can make the organic film-forming agent, the organic antirust agent and the organic dehydration additive dissolve in the aliphatic hydrocarbon solvent.
进一步的，步骤2至少重复2两次后进入步骤3。Further, step 2 is repeated at least twice and then step 3 is entered.
进一步的，对铝合金表面腐蚀部位进行机械打磨，打磨后的表面粗糙度不超过0.6μm。Further, mechanical grinding is performed on the corroded part of the aluminum alloy surface, and the surface roughness after grinding is not more than 0.6 μm.
进一步的，所述无机酸为多种无机酸的混合酸。Further, the inorganic acid is a mixed acid of various inorganic acids.
有益效果Beneficial effect
采用铝合金去腐蚀产物膏对铝合金表面的腐蚀产物进行去除，既能快速、有效地去除铝合金表面的腐蚀产物，又消除了除锈过程中化学试剂对于铝合金表面未腐蚀部位的不利影响；然后采用铝合金表面氧化膏对铝合金表面进行氧化，生成一层与有机膜层结合力好并有一定防腐蚀能力的防护膜；最后通过涂敷缓蚀剂或有机涂料等，以达到最终防护的目的。The aluminum alloy corrosion product paste is used to remove the corrosion products on the aluminum alloy surface, which can not only quickly and effectively remove the corrosion products on the aluminum alloy surface, but also eliminate the adverse effects of chemical reagents on the uncorroded parts of the aluminum alloy surface during the rust removal process ; Then use the aluminum alloy surface oxidation paste to oxidize the aluminum alloy surface to form a protective film with good adhesion to the organic film layer and a certain anti-corrosion ability; finally, by coating corrosion inhibitors or organic coatings, etc., to achieve the final purpose of protection.
具体实施方式Detailed ways
提供具体实施例如下Provide specific examples as follows
实施例1Example 1
提供一种铝合金表面去腐蚀防护方法，包括以下步骤：Provided is a method for corrosion protection on an aluminum alloy surface, comprising the following steps:
步骤1、铝合金表面腐蚀部位浮锈的去除Step 1. Removal of floating rust on the corroded parts of the aluminum alloy surface
对铝合金表面腐蚀部位进行机械打磨，打磨至表面露出金属光泽，使用有机溶剂对打磨后的表面进行清洁；Mechanically polish the corroded parts of the aluminum alloy surface until the surface reveals a metallic luster, and use an organic solvent to clean the polished surface;
步骤2、铝合金表面深层腐蚀产物的去除Step 2. Removal of deep corrosion products on the aluminum alloy surface
对机械打磨后的铝合金表面涂敷铝合金去腐蚀产物膏，涂敷后保持0.5h～2h；当去腐蚀产物膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply aluminum alloy anti-corrosion product paste to the surface of aluminum alloy after mechanical polishing, and keep it for 0.5h~2h after application; when the anti-corrosion product paste is dry, clean the coated area to remove the attachment on the aluminum alloy surface;
步骤3、铝合金表面氧化Step 3, aluminum alloy surface oxidation
对涂敷过铝合金去腐蚀产物膏的铝合金表面涂敷铝合金表面氧化膏，所述氧化膏涂敷后保持0.5h～2h；当铝合金表面氧化膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply an aluminum alloy surface oxide paste to the aluminum alloy surface coated with aluminum alloy corrosion product paste, and keep the oxide paste for 0.5h to 2h after application; when the aluminum alloy surface oxide paste is dry, clean the coated area , remove aluminum alloy surface attachments;
步骤4、铝合金去腐后表面防护Step 4. Surface protection of aluminum alloy after decorrosion
对氧化后的铝合金表面涂覆缓蚀剂或有机涂料，形成铝合金表面的保护膜层。Coating corrosion inhibitor or organic paint on the surface of the oxidized aluminum alloy to form a protective film on the surface of the aluminum alloy.
所述的铝合金去腐蚀产物膏是由无机稠化剂、硝酸、阴离子表面活性剂、无机防锈剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：5～10：20～40；无机稠化剂在所述去腐蚀产物膏中起到载体作用，使得所述去腐蚀产物膏能够黏在铝合金表面；硝酸为除锈活性成分，能够与铝合金腐蚀产物发生化学反应并生成化学产物，所述化学产物易于脱离铝合金表面；阴离子表面活性剂为添加剂，能够提高所述去腐蚀产物膏对铝合金表面的润湿能力；无机防锈剂为添加剂，适配于硝酸，用于保护铝合金基材不会被无机酸腐蚀；去离子水为溶剂；所述化学产物为盐。The aluminum alloy corrosion removal product paste is composed of inorganic thickener, nitric acid, anionic surfactant, inorganic antirust agent and deionized water uniformly mixed: the mass percentage of each component is 25-50: 10-20: 5-10: 5-10: 20-40; the inorganic thickener acts as a carrier in the corrosion-removing product paste, so that the corrosion-removing product paste can stick to the surface of the aluminum alloy; nitric acid is the rust-removing active ingredient, It can chemically react with aluminum alloy corrosion products and generate chemical products, which are easy to detach from the aluminum alloy surface; anionic surfactants are additives that can improve the wetting ability of the corrosion-removing product paste on the aluminum alloy surface; inorganic anti-corrosion The rust agent is an additive, which is suitable for nitric acid, and is used to protect the aluminum alloy base material from being corroded by inorganic acid; deionized water is a solvent; and the chemical product is a salt.
所述的铝合金表面氧化膏由无机稠化剂、无机氧化剂、阴离子表面活性剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：15～30：5～10：20～40；无机稠化剂在所述氧化膏中起到载体作用，使得所述氧化膏能够黏在铝合金表面；无机氧化剂为氧化活性成分，能够与铝合金表面氧化生成致密氧化膜层；阴离子表面活性剂为添加剂，能够提高所述氧化膏对铝合金表面的润湿能力；去离子水为溶剂。The aluminum alloy surface oxidation paste is composed of inorganic thickener, inorganic oxidant, anionic surfactant and deionized water uniformly mixed: the mass percentage of each component is 25～50:15～30:5～10:20～ 40. The inorganic thickener acts as a carrier in the oxide paste, so that the oxide paste can stick to the surface of the aluminum alloy; the inorganic oxidant is an oxidation active component, which can oxidize with the surface of the aluminum alloy to form a dense oxide film layer; the anionic surface The active agent is an additive, which can improve the wettability of the oxide paste to the aluminum alloy surface; the deionized water is a solvent.
所述的缓蚀剂是由有机成膜剂、有机防锈剂、有机脱水添加剂、脂肪烃溶剂和醇醚类助剂均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：20～40：5～10；有机成膜剂为成膜物质，能够在铝合金表面形成透明膜层；有机防锈剂为防护活性成分，能够延缓铝合金表面的腐蚀；有机脱水添加剂，能够脱除铝合金表面的水分；脂肪烃溶剂为溶剂；醇醚类助剂为添加剂，能够使有机成膜剂、有机防锈剂和有机脱水添加剂溶于脂肪烃溶剂。The corrosion inhibitor is composed of organic film-forming agent, organic antirust agent, organic dehydration additive, aliphatic hydrocarbon solvent and alcohol ether additives: the mass percentage of each component is 25-50: 10-20: 5～10: 20～40: 5～10; organic film-forming agent is a film-forming substance that can form a transparent film on the surface of aluminum alloy; organic antirust agent is a protective active ingredient that can delay the corrosion of aluminum alloy surface; organic dehydration The additive can remove the moisture on the surface of the aluminum alloy; the aliphatic hydrocarbon solvent is used as the solvent; the alcohol ether additive is used as the additive, which can make the organic film forming agent, the organic antirust agent and the organic dehydration additive dissolve in the aliphatic hydrocarbon solvent.
实施例2Example 2
提供一种铝合金表面去腐蚀防护方法，包括以下步骤：Provided is a method for corrosion protection on an aluminum alloy surface, comprising the following steps:
步骤1、铝合金表面腐蚀部位浮锈的去除Step 1. Removal of floating rust on the corroded parts of the aluminum alloy surface
对铝合金表面腐蚀部位进行机械打磨，打磨至表面露出金属光泽，使用有机溶剂对打磨后的表面进行清洁；Mechanically polish the corroded parts of the aluminum alloy surface until the surface reveals a metallic luster, and use an organic solvent to clean the polished surface;
步骤2、铝合金表面深层腐蚀产物的去除Step 2. Removal of deep corrosion products on the aluminum alloy surface
对机械打磨后的铝合金表面涂敷铝合金去腐蚀产物膏，涂敷后保持0.5h～2h；当去腐蚀产物膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply aluminum alloy anti-corrosion product paste to the surface of aluminum alloy after mechanical polishing, and keep it for 0.5h~2h after application; when the anti-corrosion product paste is dry, clean the coated area to remove the attachment on the aluminum alloy surface;
步骤3、铝合金表面氧化Step 3, aluminum alloy surface oxidation
对涂敷过铝合金去腐蚀产物膏的铝合金表面涂敷铝合金表面氧化膏，所述氧化膏涂敷后保持0.5h～2h；当铝合金表面氧化膏干燥后，对涂敷区域进行清洁，去除铝合金表面附着物；Apply an aluminum alloy surface oxide paste to the aluminum alloy surface coated with aluminum alloy corrosion product paste, and keep the oxide paste for 0.5h to 2h after application; when the aluminum alloy surface oxide paste is dry, clean the coated area , remove aluminum alloy surface attachments;
步骤4、铝合金去腐后表面防护Step 4. Surface protection of aluminum alloy after decorrosion
对氧化后的铝合金表面涂覆缓蚀剂或有机涂料，形成铝合金表面的保护膜层。Coating corrosion inhibitor or organic paint on the surface of the oxidized aluminum alloy to form a protective film on the surface of the aluminum alloy.
所述的铝合金去腐蚀产物膏是由无机稠化剂、硫酸、阴离子表面活性剂、无机防锈剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：5～10：20～40；无机稠化剂在所述去腐蚀产物膏中起到载体作用，使得所述去腐蚀产物膏能够黏在铝合金表面；硫酸为除锈活性成分，能够与铝合金腐蚀产物发生化学反应并生成化学产物，所述化学产物易于脱离铝合金表面；阴离子表面活性剂为添加剂，能够提高所述去腐蚀产物膏对铝合金表面的润湿能力；无机防锈剂为添加剂，适配于硫酸，用于保护铝合金基材不会被无机酸腐蚀；去离子水为溶剂；所述化学产物为盐。The aluminum alloy anti-corrosion product paste is composed of inorganic thickener, sulfuric acid, anionic surfactant, inorganic antirust agent and deionized water uniformly mixed: the mass percentage of each component is 25-50:10-20: 5-10: 5-10: 20-40; the inorganic thickener acts as a carrier in the corrosion-removing product paste, so that the corrosion-removing product paste can stick to the surface of the aluminum alloy; sulfuric acid is the rust-removing active ingredient, It can chemically react with aluminum alloy corrosion products and generate chemical products, which are easy to detach from the aluminum alloy surface; anionic surfactants are additives that can improve the wetting ability of the corrosion-removing product paste on the aluminum alloy surface; inorganic anti-corrosion The rust agent is an additive, suitable for sulfuric acid, and used to protect the aluminum alloy substrate from being corroded by inorganic acid; deionized water is a solvent; and the chemical product is a salt.
所述的铝合金表面氧化膏由无机稠化剂、无机氧化剂、阴离子表面活性剂和去离子水均匀混合组成：各个组分的质量百分比为25～50：15～30：5～10：20～40；无机稠化剂在所述氧化膏中起到载体作用，使得所述氧化膏能够黏在铝合金表面；无机氧化剂为氧化活性成分，能够与铝合金表面氧化生成致密氧化膜层；阴离子表面活性剂为添加剂，能够提高所述氧化膏对铝合金表面的润湿能力；去离子水为溶剂。The aluminum alloy surface oxidation paste is composed of inorganic thickener, inorganic oxidant, anionic surfactant and deionized water uniformly mixed: the mass percentage of each component is 25～50:15～30:5～10:20～ 40. The inorganic thickener acts as a carrier in the oxide paste, so that the oxide paste can stick to the surface of the aluminum alloy; the inorganic oxidant is an oxidation active component, which can oxidize with the surface of the aluminum alloy to form a dense oxide film layer; the anionic surface The active agent is an additive, which can improve the wettability of the oxide paste to the aluminum alloy surface; the deionized water is a solvent.
所述的缓蚀剂是由有机成膜剂、有机防锈剂、有机脱水添加剂、脂肪烃溶剂和醇醚类助剂均匀混合组成：各个组分的质量百分比为25～50：10～20：5～10：20～40：5～10；有机成膜剂为成膜物质，能够在铝合金表面形成透明膜层；有机防锈剂为防护活性成分，能够延缓铝合金表面的腐蚀；有机脱水添加剂，能够脱除铝合金表面的水分；脂肪烃溶剂为溶剂；醇醚类助剂为添加剂，能够使有机成膜剂、有机防锈剂和有机脱水添加剂溶于脂肪烃溶剂。The corrosion inhibitor is composed of organic film-forming agent, organic antirust agent, organic dehydration additive, aliphatic hydrocarbon solvent and alcohol ether additives: the mass percentage of each component is 25-50: 10-20: 5～10: 20～40: 5～10; organic film-forming agent is a film-forming substance that can form a transparent film on the surface of aluminum alloy; organic antirust agent is a protective active ingredient that can delay the corrosion of aluminum alloy surface; organic dehydration The additive can remove the moisture on the surface of the aluminum alloy; the aliphatic hydrocarbon solvent is used as the solvent; the alcohol ether additive is used as the additive, which can make the organic film forming agent, the organic antirust agent and the organic dehydration additive dissolve in the aliphatic hydrocarbon solvent.
实施例3Example 3
包括如下步骤：Including the following steps:
步骤1、铝合金表面腐蚀部位浮锈的去除Step 1. Removal of floating rust on the corroded parts of the aluminum alloy surface
使用砂纸、硬毛刷或砂轮等工具对铝合金表面腐蚀部位进行机械打磨，打磨至表面露出金属光泽，使用沾有汽油、丙酮或溶剂型清洗剂等有机溶剂的棉纱或棉布对打磨后的表面进行清洁，清洁后将处理表面在空气中自然干燥或用洁净的压缩空气吹干；Use tools such as sandpaper, bristle brushes or grinding wheels to mechanically polish the corroded parts of the aluminum alloy surface until the surface reveals a metallic luster, and use cotton yarn or cotton cloth dipped in organic solvents such as gasoline, acetone or solvent-based cleaning agents to polish the polished surface After cleaning, dry the treated surface naturally in the air or dry it with clean compressed air;
步骤2、铝合金表面深层腐蚀产物的去除Step 2. Removal of deep corrosion products on the aluminum alloy surface
将铝合金去腐蚀产物膏搅拌至均匀膏状，用毛刷或刮刀涂抹到机械打磨后的铝合金表面，涂敷后保持0.5h～2h；当去腐蚀产物膏干燥后，用毛刷、棉布或刮刀等清除残留的去腐蚀产物膏以及去腐蚀产物膏与腐蚀产物相互作用的产物，清除后使用流动去离子水清洗铝合金基体表面，或使用沾有汽油、丙酮或溶剂型清洗剂的棉纱或棉布擦除，以完全去除铝合金表面附着物；清洗后可在空气中自然干燥或用洁净的压缩空气吹干；当铝合金基体腐蚀产物未被完全清除时，可用铝合金去腐蚀产物膏重复处理；Stir the aluminum alloy anti-corrosion product paste to a uniform paste, apply it to the mechanically polished aluminum alloy surface with a brush or scraper, and keep it for 0.5h~2h after coating; when the anti-corrosion product paste is dry, use a brush, cotton cloth or a scraper to remove the residual de-corrosion product paste and the product of the interaction between the de-corrosion product paste and the corrosion product. After cleaning, use flowing deionized water to clean the surface of the aluminum alloy substrate, or use cotton yarn stained with gasoline, acetone or solvent-based cleaning agent Or wipe with cotton cloth to completely remove the attachments on the aluminum alloy surface; after cleaning, it can be dried naturally in the air or blown dry with clean compressed air; when the corrosion products of the aluminum alloy substrate are not completely removed, the aluminum alloy can be used to remove the corrosion products Duplicate processing;
步骤3、铝合金表面氧化Step 3, aluminum alloy surface oxidation
将铝合金表面氧化膏搅拌至均匀膏状，用毛刷或刮刀涂抹到涂敷过铝合金去腐蚀产物膏的铝合金表面，所述氧化膏涂敷后保持0.5h～2h；当铝合金表面氧化膏干燥后，用毛刷、棉布或刮刀等清除残留的氧化膏，清除后使用流动去离子水清洗铝合金基体表面，或使用沾有汽油、丙酮或溶剂型清洗剂的棉纱或棉布擦除，以完全去除铝合金表面附着物；清洗后可在空气中自然干燥或用洁净的压缩空气吹干。Stir the oxidation paste on the surface of the aluminum alloy to a uniform paste, and apply it with a brush or a scraper to the surface of the aluminum alloy that has been coated with the aluminum alloy corrosion product paste, and keep the oxidation paste for 0.5h~2h after application; After the oxidation paste is dry, use a brush, cotton cloth or scraper to remove the residual oxidation paste. After cleaning, use running deionized water to clean the surface of the aluminum alloy substrate, or use cotton yarn or cotton cloth dipped in gasoline, acetone or solvent-based cleaning agent to wipe off , to completely remove the aluminum alloy surface attachments; after cleaning, it can be dried naturally in the air or blown dry with clean compressed air.
步骤4、铝合金去腐后表面防护Step 4. Surface protection of aluminum alloy after decorrosion
对氧化后的铝合金表面喷涂或刷涂缓蚀剂或有机涂料，形成铝合金表面的保护膜层。Spray or brush corrosion inhibitor or organic paint on the oxidized aluminum alloy surface to form a protective film on the aluminum alloy surface.
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