WO2018006270A1 - Chromium-free aluminum conversion coating agent, aluminum material, and surface conversion coating treatment method - Google Patents

Chromium-free aluminum conversion coating agent, aluminum material, and surface conversion coating treatment method Download PDF

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Publication number
WO2018006270A1
WO2018006270A1 PCT/CN2016/088702 CN2016088702W WO2018006270A1 WO 2018006270 A1 WO2018006270 A1 WO 2018006270A1 CN 2016088702 W CN2016088702 W CN 2016088702W WO 2018006270 A1 WO2018006270 A1 WO 2018006270A1
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parts
chromium
aluminum
coating agent
film
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PCT/CN2016/088702
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French (fr)
Chinese (zh)
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王饶玲
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深圳市恒兆智科技有限公司
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Priority to PCT/CN2016/088702 priority Critical patent/WO2018006270A1/en
Publication of WO2018006270A1 publication Critical patent/WO2018006270A1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides

Definitions

  • the present invention relates to the field of metal surface treatment technology, and in particular, to a chromium-free coating agent, an aluminum material, and a coating treatment method thereof.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of steel, zinc, aluminum, iron and their alloys goes deep into all walks of life.
  • most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metalworking parts for certain applications require process passivation.
  • a chromium-free coating agent which is excellent in bonding ability, corrosion resistance and environmental protection, and an aluminum surface filming treatment method and an aluminum material obtained by a film treatment.
  • a chromium-free coating agent comprising 1000 parts by weight of the following components by weight: 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of sodium molybdate, 5-10 parts Cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
  • a method for processing a surface of an aluminum material comprising the steps of: preparing a chromium-free coating agent as described above; dissolving a chromium-free aluminum coating agent in water to form a film solution, and controlling the quality of the film solution; The ratio is 2-8%, the pH value is controlled to 2-6, and the aluminum material is immersed in the film solution after the predetermined daytime treatment.
  • the above-mentioned chromium-free aluminum coating agent forms an aluminum film on a metal surface, has good bonding ability with a paint film and has strong corrosion resistance.
  • the chromium-free aluminum film agent is a better alternative to the conventional chromium-containing film agent, and avoids Heavy metals such as chromium produce environmental pollution and are a new type of material that is energy-saving, environmentally friendly and non-polluting.
  • the embodiment of the present invention provides a chromium-free aluminum coating agent, in terms of 1000 parts by weight, the following parts by weight, including 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of molybdic acid Sodium, 5-10 parts of cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
  • the potassium fluorozirconate or sodium fluorozirconate is used in an amount of 12 to 18 parts by weight.
  • the parts by weight of the sodium molybdate are 6-8 parts
  • the parts by weight of the cobalt nitrate are 6-8 parts
  • the parts by weight of the ammonium fluoride are 2-4 parts
  • the silicon The sol is 2 to 5 parts by weight
  • the nitric acid is 4 to 6 parts by weight.
  • the chrome-free aluminum coating agent has a pH of 2.0 to 6.0, and the chrome-free aluminum coating agent has a mass ratio of 2-8% using a ruthenium ratio.
  • An embodiment of the present invention further provides a method for treating a surface of an aluminum material, comprising the steps of: preparing a chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, The mass ratio of the film solution is controlled to be 2-8%, and the enthalpy value is controlled to 2.0-6.0; the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried.
  • the treated aluminum material is sprayed or impregnated with aluminum, the spray or impregnation is between 2 and 5 minutes, and the spray pressure is 0.8-1.2 kgf/cm 2 .
  • a chromium-free aluminum coating agent should be added to the workpiece of 100 m 2 /L. If the pH is out of balance, add the ammonia water and the chrome-free coating to set the P H value to the above working range.
  • the chromium-free aluminum coating agent in the embodiment of the invention is a zirconium salt treatment agent, is non-phosphorus, has no heavy metal, and is low-solid, suitable for Surface treatment before steel, zinc and aluminum coating can replace phosphating solution and chromizing agent.
  • the chrome-free aluminum coating forms a yellow aluminum film on the surface of the metal, and has excellent bonding ability and corrosion resistance to the painted film.
  • the aluminum film treatment film can be matched with various types of coatings.
  • Embodiments of the present invention also provide an aluminum material which is treated by a surface treatment method of an aluminum material as described above to form a film on the surface of the aluminum material.
  • the ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 10 parts of sodium fluorozirconate, 5 parts of sodium molybdate, 5 parts of cobalt nitrate, 2 parts of ammonium fluoride, 5 parts of silica sol and 3 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 4%, and controlling the pH value to 3 -4;
  • the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 3 minutes of treatment, the aluminum is washed and dried.
  • the ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 12 parts sodium fluorozirconate, 6 parts sodium molybdate, 6 parts cobalt nitrate, 3 parts ammonium fluoride, 6 parts silica sol and 4 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4;
  • the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 4 minutes of treatment, the aluminum is washed and dried.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum and after 4 minutes of treatment, the aluminum is washed and dried.
  • the ingredients are mixed in the following parts by weight (total amount 1000 parts by weight): 20 parts of sodium fluorozirconate, 10 parts of sodium molybdate, 10 parts of cobalt nitrate, 5 parts of ammonium fluoride, 10 parts of silica sol and 8 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 6%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. Treatment surface clean aluminum

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

The present invention relates to a chromium-free aluminum conversion coating agent, aluminum material, and surface conversion coating treatment method. The conversion coating agent comprises: 10-20 parts of a potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of a sodium molybdate, 5-10 parts of a cobalt nitrate, 2-5 parts of an ammonium fluoride, 5-10 parts of a silica sol, and 3-7 parts of a nitric acid. The chromium-free aluminum conversion coating agent forms an aluminum conversion treatment coating on a metal surface. The aluminum conversion treatment coating binds well with a paint coating and is highly resistant against corrosion.

Description

说明书 发明名称：无铬铝皮膜剂、 铝材及其表面皮膜化处理方法 技术领域  Description: Inventive name: chromium-free aluminum film agent, aluminum material and its surface film treatment method
[0001] 本发明涉及金属表面处理技术领域， 具体涉及一种无铬皮膜剂、 铝材及其皮膜 处理方法。  [0001] The present invention relates to the field of metal surface treatment technology, and in particular, to a chromium-free coating agent, an aluminum material, and a coating treatment method thereof.
背景技术  Background technique
[0002] 为提高产品表面性能或者外观， 通常对工件表面处理技术。 例如， 钢铁、 锌、 铝、 铁及其合金的表面处理工艺深入各行各业中。 而且， 大多数工件在进行表 面处理前还需要经过预处理， 例如， 进行清洗， 除污除油， 某些用途的金属工 件还需要进行处理钝化处理。  [0002] In order to improve the surface properties or appearance of a product, the surface treatment technology of the workpiece is usually applied. For example, the surface treatment of steel, zinc, aluminum, iron and their alloys goes deep into all walks of life. Moreover, most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metalworking parts for certain applications require process passivation.
[0003] 一般在机械加工及电子电气行业， 金属在涂装前都需要进行表面预处理， 如通 过钝化液或皮膜化处理， 传统的钝化剂或皮膜剂通常含有六价铬、 三价铬等重 金属， 显然不能满足越来越高的环保要求。  [0003] Generally in the mechanical processing and electrical and electronic industries, metals require surface pretreatment before coating, such as passivation or filming. Conventional passivators or coatings usually contain hexavalent chromium and trivalent. Heavy metals such as chrome obviously cannot meet the increasingly high environmental requirements.
技术问题  technical problem
[0004] 有鉴于此， 提供一种结合能力良好和耐腐蚀能力强并且环保的无铬皮膜剂， 以 及铝材表面皮膜化处理方法和经过皮膜化处理后制得的铝材。  [0004] In view of the above, there is provided a chromium-free coating agent which is excellent in bonding ability, corrosion resistance and environmental protection, and an aluminum surface filming treatment method and an aluminum material obtained by a film treatment.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0005] 一种无铬皮膜剂， 以 1000重量份计， 包括如下重量份数的成分： 10-20份氟锆 酸钾或氟锆酸钠， 5-10份钼酸钠， 5-10份硝酸钴， 2-5份氟化铵， 5-10份硅溶胶和 3-7份的硝酸。  [0005] A chromium-free coating agent comprising 1000 parts by weight of the following components by weight: 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of sodium molybdate, 5-10 parts Cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
[0006] 一种铝材表面皮膜化处理方法， 其包括下列步骤： 配制如上所述的无铬皮膜剂 ； 将无铬铝皮膜剂溶于水中配制成形成为皮膜溶液， 控制所述皮膜溶液的质量 配比为 2-8%， PH值控制为 2-6， 将铝材浸入于皮膜溶液中， 经过预定吋间处理后 [0006] A method for processing a surface of an aluminum material, comprising the steps of: preparing a chromium-free coating agent as described above; dissolving a chromium-free aluminum coating agent in water to form a film solution, and controlling the quality of the film solution; The ratio is 2-8%, the pH value is controlled to 2-6, and the aluminum material is immersed in the film solution after the predetermined daytime treatment.
， 水洗铝材， 干燥。 , Washed aluminum, dry.
[0007] 以及， 一种铝材， 其表面通过如上所述的铝材表面皮膜化处理方法形成皮膜。  [0007] Also, an aluminum material whose surface is formed into a film by the surface treatment treatment of the aluminum material as described above.
发明的有益效果 有益效果 Advantageous effects of the invention Beneficial effect
[0008] 上述无铬铝皮膜剂在金属表面形成铝皮膜， 与涂装漆膜的结合能力良好和耐腐 蚀能力强， 该无铬铝皮膜剂是替代传统含铬皮膜剂的较佳选择， 避免铬等重金 属产生环境污染的不足， 是一种节能环保、 无污染的新型材料。  [0008] The above-mentioned chromium-free aluminum coating agent forms an aluminum film on a metal surface, has good bonding ability with a paint film and has strong corrosion resistance. The chromium-free aluminum film agent is a better alternative to the conventional chromium-containing film agent, and avoids Heavy metals such as chromium produce environmental pollution and are a new type of material that is energy-saving, environmentally friendly and non-polluting.
本发明的实施方式 Embodiments of the invention
[0009] 以下将结合具体实施例对本发明进行详细说明。 The present invention will be described in detail below with reference to specific embodiments.
[0010] 本发明实施例提供一种无铬铝皮膜剂， 以 1000重量份计， 下列重量份数的规定 ， 包括 10-20份氟锆酸钾或氟锆酸钠， 5-10份钼酸钠， 5-10份硝酸钴， 2-5份氟化 铵， 5- 10份硅溶胶和 3-7份的硝酸。  [0010] The embodiment of the present invention provides a chromium-free aluminum coating agent, in terms of 1000 parts by weight, the following parts by weight, including 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of molybdic acid Sodium, 5-10 parts of cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
[0011] 优选地， 所述氟锆酸钾或氟锆酸钠的重量份数为 12-18份。 优选地， 所述钼酸 钠的重量份数为 6-8份， 所述硝酸钴的重量份数为 6-8份， 所述氟化铵的重量份数 为 2-4份， 所述硅溶胶的重量份数为 2-5份， 所述硝酸的重量份数为 4-6份。  [0011] Preferably, the potassium fluorozirconate or sodium fluorozirconate is used in an amount of 12 to 18 parts by weight. Preferably, the parts by weight of the sodium molybdate are 6-8 parts, the parts by weight of the cobalt nitrate are 6-8 parts, and the parts by weight of the ammonium fluoride are 2-4 parts, the silicon The sol is 2 to 5 parts by weight, and the nitric acid is 4 to 6 parts by weight.
[0012] 在使用吋， 所述无铬铝皮膜剂的 PH值为 2.0-6.0， 所述无铬铝皮膜剂使用吋配比 的质量浓度为 2-8%。  [0012] In the use of ruthenium, the chrome-free aluminum coating agent has a pH of 2.0 to 6.0, and the chrome-free aluminum coating agent has a mass ratio of 2-8% using a ruthenium ratio.
[0013] 在上述无铬铝皮膜剂中， 氟锆酸钾或氟锆酸钠、 钼酸钠作为为主要成膜成分， 硝酸钴、 硅溶胶作为填充剂增加皮膜耐蚀性， 氟化铵加速皮膜生成， 硝酸提高 皮膜生成的酸性环境。  [0013] In the above chromium-free aluminum coating agent, potassium fluorozirconate or sodium fluorozirconate, sodium molybdate as a main film-forming component, cobalt nitrate, silica sol as a filler to increase the corrosion resistance of the film, ammonium fluoride accelerates The film is formed, and nitric acid increases the acidic environment in which the film is formed.
[0014] 本发明实施例还提供一种铝材表面皮膜化处理方法， 其包括下列步骤： 配制如 上所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形成为皮膜溶液， 控 制所述皮膜溶液的质量配比为 2-8%， ΙΉ值控制为 2.0-6.0; 将铝材浸入于皮膜溶 液中， 经过预定吋间处理后， 水洗铝材， 干燥。  [0014] An embodiment of the present invention further provides a method for treating a surface of an aluminum material, comprising the steps of: preparing a chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, The mass ratio of the film solution is controlled to be 2-8%, and the enthalpy value is controlled to 2.0-6.0; the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried.
[0015] 具体地， 所述处理铝材是通过喷淋或浸渍铝材， 所述喷淋或浸渍吋间为 2-5分 钟， 所述喷淋压力为 0.8-1.2kgf/cm 2。 另外， 由于处理过程中浓度不断变化， 所 以要对工作槽液适当进行添加， 以保持工作液在较佳工作状态， 一般处理 100m 2 /L的工件就应添加无铬铝皮膜剂。 如果 PH值失调， 加入氨水中和无铬皮膜剂将 P H值至上述工作范围。  [0015] Specifically, the treated aluminum material is sprayed or impregnated with aluminum, the spray or impregnation is between 2 and 5 minutes, and the spray pressure is 0.8-1.2 kgf/cm 2 . In addition, due to the constant change of concentration during the process, it is necessary to properly add the working bath to keep the working fluid in a better working condition. Generally, a chromium-free aluminum coating agent should be added to the workpiece of 100 m 2 /L. If the pH is out of balance, add the ammonia water and the chrome-free coating to set the P H value to the above working range.
[0016] 本发明实施例中无铬铝皮膜剂是锆盐处理剂、 无磷、 无重金属、 低沉澄， 适合 于钢铁、 锌和铝涂装前表面处理， 可以代替磷化液、 铬化剂。 该无铬铝皮膜剂 在金属表面形成黄色铝皮膜， 与涂装漆膜的结合能力非常好和耐腐蚀能力强。 该铝皮膜处理膜能和各种型号的涂料匹配。 [0016] The chromium-free aluminum coating agent in the embodiment of the invention is a zirconium salt treatment agent, is non-phosphorus, has no heavy metal, and is low-solid, suitable for Surface treatment before steel, zinc and aluminum coating can replace phosphating solution and chromizing agent. The chrome-free aluminum coating forms a yellow aluminum film on the surface of the metal, and has excellent bonding ability and corrosion resistance to the painted film. The aluminum film treatment film can be matched with various types of coatings.
[0017] 本发明实施例还提供一种铝材， 其通过如上所述的铝材表面皮膜化处理方法进 行处理， 使铝材表面形成皮膜。 [0017] Embodiments of the present invention also provide an aluminum material which is treated by a surface treatment method of an aluminum material as described above to form a film on the surface of the aluminum material.
[0018] 实施例 1 Embodiment 1
[0019] 按照下列重量份数混合各成分 （总量为 1000重量份） ： 10份氟锆酸钠， 5份钼 酸钠， 5份硝酸钴， 2份氟化铵， 5份硅溶胶和 3份的硝酸和余量水。  [0019] The ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 10 parts of sodium fluorozirconate, 5 parts of sodium molybdate, 5 parts of cobalt nitrate, 2 parts of ammonium fluoride, 5 parts of silica sol and 3 Parts of nitric acid and the balance of water.
[0020] 处理方法： 配制如上所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形 成为皮膜溶液， 控制所述皮膜溶液的质量配比为 4%， PH值控制为 3-4; 将铝材浸 入于皮膜溶液中， 经过预定吋间处理后， 水洗铝材， 干燥。 处理表面洁净铝材 ， 经过 3分钟吋间处理后， 水洗铝材， 干燥。  [0020] Treatment method: preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 4%, and controlling the pH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 3 minutes of treatment, the aluminum is washed and dried.
[0021] 经过上述形成为所需的铝材。 处理后， 观察工件表面， 工件表面有一层均匀的 淡黄色皮膜层， 铝件中性盐雾测试 96小吋不腐蚀， 油漆涂装后附着力很好， 水 煮 2小吋百格试验， 无任何涂层脱落， 等级为 0。  [0021] After the above formation into a desired aluminum material. After the treatment, the surface of the workpiece was observed. The surface of the workpiece had a uniform layer of pale yellow film. The neutral salt spray test of the aluminum piece was not corroded for 96 hours. The adhesion after painting was very good. The boiled water was tested for 2 hours. Any coating peels off and the rating is zero.
[0022] 实施例 2  Embodiment 2
[0023] 按照下列重量份数混合各成分 （总量为 1000重量份） ： 12份氟锆酸钠， 6份钼 酸钠， 6份硝酸钴， 3份氟化铵， 6份硅溶胶和 4份的硝酸和余量水。  [0023] The ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 12 parts sodium fluorozirconate, 6 parts sodium molybdate, 6 parts cobalt nitrate, 3 parts ammonium fluoride, 6 parts silica sol and 4 Parts of nitric acid and the balance of water.
[0024] 处理方法： 配制如上所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形 成为皮膜溶液， 控制所述皮膜溶液的质量配比为 5%， PH值控制为 3-4; 将铝材浸 入于皮膜溶液中， 经过预定吋间处理后， 水洗铝材， 干燥。 处理表面洁净铝材 ， 经过 4分钟吋间处理后， 水洗铝材， 干燥。  [0024] Treatment method: preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 4 minutes of treatment, the aluminum is washed and dried.
[0025] 经过上述形成为所需的铝材。 处理后， 观察工件表面， 工件表面有一层均匀的 淡黄色皮膜层， 铝件中性盐雾测试 96小吋不腐蚀， 油漆涂装后附着力很好， 水 煮 2小吋百格试验， 无任何涂层脱落， 等级为 0。  [0025] After the above formation into a desired aluminum material. After the treatment, the surface of the workpiece was observed. The surface of the workpiece had a uniform layer of pale yellow film. The neutral salt spray test of the aluminum piece was not corroded for 96 hours. The adhesion after painting was very good. The boiled water was tested for 2 hours. Any coating peels off and the rating is zero.
[0026] 实施例 3  Embodiment 3
[0027] 按照下列重量份数混合各成分 （总量为 1000重量份） ： 15份氟锆酸钠， 7份钼 酸钠， 7份硝酸钴， 4份氟化铵， 7份硅溶胶和 5份的硝酸和余量水。 [0028] 处理方法： 配制如上所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形 成为皮膜溶液， 控制所述皮膜溶液的质量配比为 5%， PH值控制为 3-4; 将铝材浸 入于皮膜溶液中， 经过预定吋间处理后， 水洗铝材， 干燥。 处理表面洁净铝材 ， 经过 4分钟吋间处理后， 水洗铝材， 干燥。 [0027] The ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 15 parts sodium fluorozirconate, 7 parts sodium molybdate, 7 parts cobalt nitrate, 4 parts ammonium fluoride, 7 parts silica sol and 5 Parts of nitric acid and the balance of water. [0028] Treatment method: preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum and after 4 minutes of treatment, the aluminum is washed and dried.
[0029] 经过上述形成为所需的铝材。 处理后， 处理后， 观察工件表面， 工件表面有一 层均匀的淡黄色皮膜层， 铝件中性盐雾测试 96小吋不腐蚀， 油漆涂装后附着力 很好， 水煮 2小吋百格试验， 无任何涂层脱落， 等级为 0。  [0029] After the above formation into a desired aluminum material. After treatment, after processing, observe the surface of the workpiece, the surface of the workpiece has a uniform layer of light yellow film, the neutral salt spray test of aluminum is 96 hours without corrosion, the adhesion after painting is very good, boiled 2 hours Test, without any coating shedding, grade 0.
[0030] 实施例 4  Embodiment 4
[0031] 按照下列重量份数混合各成分 （总量为 1000重量份） ： 20份氟锆酸钠， 10份钼 酸钠， 10份硝酸钴， 5份氟化铵， 10份硅溶胶和 8份的硝酸和余量水。  [0031] The ingredients are mixed in the following parts by weight (total amount 1000 parts by weight): 20 parts of sodium fluorozirconate, 10 parts of sodium molybdate, 10 parts of cobalt nitrate, 5 parts of ammonium fluoride, 10 parts of silica sol and 8 Parts of nitric acid and the balance of water.
[0032] 处理方法： 配制如上所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形 成为皮膜溶液， 控制所述皮膜溶液的质量配比为 6%， PH值控制为 3-4; 将铝材浸 入于皮膜溶液中， 经过预定吋间处理后， 水洗铝材， 干燥。 处理表面洁净铝材[0032] Treatment method: preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 6%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. Treatment surface clean aluminum
， 经过 5分钟吋间处理后， 水洗铝材， 干燥。 After 5 minutes of treatment, wash the aluminum and dry.
[0033] 经过上述形成为所需的铝材。 处理后， 观察工件表面， 工件表面有一层均匀的 淡黄色皮膜层， 铝件中性盐雾测试 96小吋不腐蚀， 油漆涂装后附着力很好， 水 煮 2小吋百格试验， 无任何涂层脱落， 等级为 0。 [0033] After the above formation into a desired aluminum material. After the treatment, the surface of the workpiece was observed. The surface of the workpiece had a uniform layer of pale yellow film. The neutral salt spray test of the aluminum piece was not corroded for 96 hours. The adhesion after painting was very good. The boiled water was tested for 2 hours. Any coating peels off and the rating is zero.
[0034] 需要说明的是， 本发明并不局限于上述实施方式， 根据本发明的创造精神， 本 领域技术人员还可以做出其他变化， 这些依据本发明的创造精神所做的变化， 都应包含在本发明所要求保护的范围之内。 [0034] It should be noted that the present invention is not limited to the above embodiments, and other changes may be made by those skilled in the art according to the creative spirit of the present invention, and the changes according to the creative spirit of the present invention should be It is intended to be included within the scope of the invention as claimed.

Claims

权利要求书 Claim
[权利要求 1] 一种无铬铝皮膜剂， 其特征在于， 以 1000重量份计， 包括如下重量份 数的成分： 10-20份氟锆酸钾或氟锆酸钠， 5-10份钼酸钠， 5-10份硝酸 钴， 2-5份氟化铵， 5-10份硅溶胶和 3-7份的硝酸。  [Claim 1] A chromium-free aluminum coating agent comprising 1000 parts by weight of the following components by weight: 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of molybdenum Sodium, 5-10 parts of cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
[权利要求 2] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述氟锆酸钾或氟 锆酸钠的重量份数为 12-18份。  [Claim 2] The chromium-free aluminum coating agent according to claim 1, wherein the potassium fluorozirconate or sodium fluorozirconate is contained in an amount of 12 to 18 parts by weight.
[权利要求 3] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述钼酸钠的重 份数为 6-8份。 [Claim 3] The chromium-free aluminum coating agent according to claim 1, wherein the sodium molybdate has a weight fraction of 6-8 parts.
[权利要求 4] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述硝酸钴的重 份数为 6-8份。 [Claim 4] The chromium-free aluminum coating agent according to claim 1, wherein the cobalt nitrate has a weight fraction of 6-8 parts.
[权利要求 5] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述氟化铵的重 份数为 2-4份。 [Claim 5] The chromium-free aluminum coating agent according to claim 1, wherein the ammonium fluoride has a weight fraction of 2 to 4 parts.
[权利要求 6] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述硅溶胶的重 份数为 2-5份。 [Claim 6] The chromium-free aluminum coating agent according to claim 1, wherein the silica sol has a weight fraction of 2 to 5 parts.
[权利要求 7] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述硝酸的重量份 数为 4-6份。 [Claim 7] The chromium-free aluminum coating agent according to claim 1, wherein the nitric acid has a weight fraction of 4 to 6 parts.
[权利要求 8] 如权利要求 1所述的无铬铝皮膜剂， 其特征在于， 所述无铬铝皮膜剂 的 PH值为 2.0-6.0， 所述无铬铝皮膜剂使用吋配比的质量浓度为 2-8% [Claim 8] The chromium-free aluminum coating agent according to claim 1, wherein the chromium-free aluminum coating agent has a pH of 2.0 to 6.0, and the chromium-free aluminum coating agent uses a mass ratio of the cerium ratio. Concentration is 2-8%
[权利要求 9] 一种铝材表面皮膜化处理方法， 其包括下列步骤： 配制如权利要求 1- 7任一项所述的无铬铝皮膜剂； 将无铬铝皮膜剂溶于水中配制成形成 为皮膜溶液， 控制所述皮膜溶液的质量配比为 2-8%， PH值控制为 2.0- 6.0； 将铝材浸入于皮膜溶液中， 经过预定吋间处理后， 水洗铝材， 干燥。 [Claim 9] A method for treating a surface of an aluminum material, comprising the steps of: formulating the chromium-free aluminum film agent according to any one of claims 1 to 7; and dissolving the chromium-free aluminum film agent in water to form a film As a film solution, the mass ratio of the film solution is controlled to be 2-8%, and the pH value is controlled to 2.0-6.0; the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried.
[权利要求 10] 一种铝材， 其特征在于， 所述铝材表面通过如权利要求 9所述的铝材 表面皮膜化处理方法形成有皮膜。  [Attachment 10] An aluminum material, characterized in that the surface of the aluminum material is formed with a film by the surface treatment treatment method of the aluminum material according to claim 9.
PCT/CN2016/088702 2016-07-05 2016-07-05 Chromium-free aluminum conversion coating agent, aluminum material, and surface conversion coating treatment method WO2018006270A1 (en)

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