WO2019000446A1 - 清洗除氧化皮剂及压铸铝工件除氧化皮处理方法 - Google Patents

清洗除氧化皮剂及压铸铝工件除氧化皮处理方法 Download PDF

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WO2019000446A1
WO2019000446A1 PCT/CN2017/091301 CN2017091301W WO2019000446A1 WO 2019000446 A1 WO2019000446 A1 WO 2019000446A1 CN 2017091301 W CN2017091301 W CN 2017091301W WO 2019000446 A1 WO2019000446 A1 WO 2019000446A1
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parts
cleaning
die
descaling
cast aluminum
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PCT/CN2017/091301
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English (en)
French (fr)
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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/CN2017/091301 priority Critical patent/WO2019000446A1/zh
Publication of WO2019000446A1 publication Critical patent/WO2019000446A1/zh

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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
    • 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
    • C23C22/34—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 fluorides or complex fluorides

Definitions

  • the present invention relates to the technical field of metal surface treatment, and in particular relates to a method for cleaning and descaling a scaled cleaning agent and a die-cast aluminum workpiece.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of aluminum, zinc, and ferroalloys is well-established in a variety of industries.
  • most of the work needs to be pretreated before it is processed into the surface of the row. For example, cleaning, decontamination and degreasing, some applications of die-cast aluminum workpieces need to be descaled.
  • the surface of the die-cast aluminum surface is subjected to processing such as die-casting, polishing, drilling, etc., and the residual oil is processed.
  • processing such as die-casting, polishing, drilling, etc.
  • These oil stains, scales, etc. need to be removed by cleaning and removing the scale agent, so that the surface of the die-cast aluminum is cleaned. Clean, make the workpiece silver bright and light, thus solving the problem that the workpiece can not be passivated after processing, the spray adhesion is poor.
  • the scale is removed by hydrofluoric acid, but the die-cast aluminum is treated with hydrofluoric acid to produce severe black ash, which makes the workpiece more polluted.
  • a cleaning descaling agent having no pitting corrosion, odorless, descaling effect, and a descaling treatment method for a die-cast aluminum workpiece are provided.
  • a cleaning descaling agent for removing an oxide film on a surface of a die-cast aluminum workpiece comprising 1000 parts by weight, including the following parts by weight: 10-50 parts of fluoroboric acid, 10-50 parts of phosphoric acid, 50- 300 parts of hydrochloric acid, 5-20 parts of sorbitol, 0.3-3 parts of nonylphenol ethoxylate, the balance being water.
  • a method for descaling a die-cast aluminum workpiece comprising the steps of: preparing a descaling agent as described above; dissolving the descaling agent in water to prepare a cleaning solution, in the cleaning solution The mass percentage of the cleaning agent is 20-100%; the die-cast aluminum workpiece is treated with a cleaning and descaling agent, and after a predetermined daytime treatment, the aluminum workpiece is washed by water and dried.
  • the above-mentioned cleaning and descaling agent has no smoke, no odor, can be operated indoors and outdoors, and has no pitting corrosion to the workpiece. Brush, spray and soak the workpiece. Cleaning and descaling agent can quickly remove oxides generated during processing such as die-casting, polishing, drilling, etc., and process residual oil stains, so that the surface of the die-cast aluminum is clean and the workpiece is bright and bright, thus solving the workpiece after processing. Can not be passivated, spray adhesion and other problems.
  • Embodiments of the present invention provide a cleaning descaling agent for removing an oxide film on a surface of a die-cast aluminum workpiece, comprising 1000 parts by weight, including the following parts by weight: 10-50 parts of fluoroboric acid, 10-50 Part of phosphoric acid, 50-300 parts of hydrochloric acid, 5-20 parts of sorbitol, 0.3-3 parts of nonylphenol ethoxylate, the balance being water.
  • the fluoroboric acid is preferably 15-45 parts by weight.
  • the phosphoric acid is present in an amount of from 15 to 45 parts by weight.
  • the parts by weight of the hydrochloric acid are preferably from 100 to 250 parts by weight.
  • the sorbitol preferably has 10 to 20 parts by weight.
  • the nonylphenol ethoxylate is preferably used in an amount of from 1 to 3 parts by weight.
  • the cleaning deoxidizing agent is diluted to a mass concentration of 20-100%. Of course, if the oil and scale are serious, it is recommended to use the stock solution without dilution.
  • the descaling effect is preferably achieved by controlling the balance of the respective distribution ratios.
  • fluoroboric acid and hydrochloric acid mainly remove scale, among which hydrochloric acid also has the effect of washing white
  • phosphoric acid stabilizes the acidity of the bath
  • sorbitol makes the reaction fine and uniform, can prevent the workpiece from being corroded, nonylphenol ethoxylate and can be removed Oil on the workpiece.
  • the cleaning and descaling agent of the embodiment is suitable for die-casting aluminum and other metal workpieces, and is widely used in various metal processing industries, and can quickly remove oxides and processing residues generated after processing such as die-casting, polishing, drilling, etc.
  • the oil stains, etc. make the surface of the die-cast aluminum clean, so that the workpiece is bright and bright, thus solving the problem that the workpiece cannot be passivated after processing, and the adhesion of the spray is poor.
  • the cleaning and descaling agent of the embodiment has no smoke, no odor, can be operated indoors and outdoors, and has no corrosion to the workpiece. Brush, spray and soak, the best soaking effect.
  • the treated die-cast aluminum surface is clean and bright.
  • An embodiment of the present invention further provides a method for descaling a die-cast aluminum workpiece, comprising the steps of: preparing a descaling agent as described above; dissolving the descaling agent in water to prepare a cleaning solution, The mass percentage of the cleaning agent in the cleaning solution is 20-100%; the die-cast aluminum workpiece is treated with a cleaning and descaling agent, and after a predetermined daytime treatment, the aluminum workpiece is washed by water and dried.
  • the descaling treatment of the die-cast aluminum workpiece can be performed by brushing, spraying, and immersing, and the immersion effect is optimal.
  • the descaling agent is treated at a normal temperature, such as 20-25 degrees.
  • the enthalpy of the die-cast aluminum workpiece immersed in the cleaning solution is preferably from 1 to 30 minutes.
  • the cleaning solution is installed in the cleaning tank, wherein the cleaning tank is made of an acid-resistant plastic tank, a glass steel tank or a low-carbon steel, and the glass fiber reinforced plastic tank or the low carbon steel is lined with a PVC plastic, and the cleaning solution is used for cleaning and removing the scale.
  • the interval is 1-30 minutes.
  • the components are mixed according to the following parts by weight: 10 parts of fluoroboric acid, 10 parts of phosphoric acid, 50 parts of hydrochloric acid, 5 parts of sorbitol, 0.3 parts of nonylphenol ethoxylate, the balance is water, stirred, uniformly mixed , formulated as a cleaning descaling agent.
  • Treatment method preparing a cleaning and descaling agent; dissolving the descaling agent in water to prepare a cleaning solution, the mass percentage of the cleaning agent in the cleaning solution is 90%; and the cleaning solution for the die-cast aluminum workpiece After cleaning and descaling, after 30 minutes of treatment, the aluminum workpiece was washed by water and dried.
  • the components are mixed according to the following parts by weight: 22 parts of fluoroboric acid, 22 parts of phosphoric acid, 150 parts of hydrochloric acid, 10 parts of sorbitol, 1 part of nonylphenol ethoxylate, the balance is water, stirring, mixing evenly , formulated as a cleaning descaling agent.
  • Treatment method preparing a cleaning and descaling agent; dissolving the descaling agent in water to prepare a cleaning solution, the mass percentage of the cleaning agent in the cleaning solution is 90%; and the cleaning solution for the die-cast aluminum workpiece After cleaning and descaling, after 20 minutes of treatment, the aluminum workpiece was washed by water and dried.
  • Example 3 The components are mixed according to the following parts by weight: 34 parts of fluoroboric acid, 34 parts of phosphoric acid, 220 parts of hydrochloric acid, 15 parts of sorbitol, 2 parts of nonylphenol ethoxylate, the balance is water, stirring, mixing evenly , formulated as a cleaning descaling agent.
  • Treatment method preparing a cleaning and descaling agent; dissolving the descaling agent in water to prepare a cleaning solution, the mass percentage of the cleaning agent in the cleaning solution is 90%; and the cleaning solution for the die-cast aluminum workpiece After cleaning and descaling, after 10 minutes of treatment, the aluminum workpiece was washed by water and dried.
  • the ingredients are mixed according to the following parts by weight: 50 parts of fluoroboric acid, 50 parts of phosphoric acid, 300 parts of hydrochloric acid, 20 parts of sorbitol, 3 parts of nonylphenol ethoxylate, the balance is water, stirring, mixing evenly , formulated as a cleaning descaling agent.
  • Processing method preparing a cleaning and descaling agent; dissolving the descaling agent in water to prepare a cleaning solution, the mass percentage of the cleaning agent in the cleaning solution is 90%; and the cleaning solution for the die-cast aluminum workpiece After cleaning and descaling, after 5 minutes of treatment, the aluminum workpiece was washed by water and dried.

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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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)

Abstract

一种清洗除氧化皮剂及压铸铝工件除氧化皮处理方法。清洗除氧化皮剂用于去除压铸铝工件表面氧化皮膜，以1000重量份计，包括如下重量份数的成分：10-50份氟硼酸，10-50份磷酸，50-300份盐酸，5-20份山梨糖醇，0.3-3份壬基酚聚氧乙烯醚，余量为水。上述清洗除氧化皮剂无烟雾，无气味，室内外均可操作，对工件无点腐蚀。刷洗、喷洗和浸泡处理工件均可。清洗除氧化皮剂能快速除去压铸处理后产生的脱模剂、氧化物、加工残留的油污等，使工件清洁干净，从而解决了工件加工后不能钝化，涂装附着力差等问题。

Description

清洗除氧化皮剂及压铸铝工件除氧化皮处理方法 技术领域
[0001] 本发明涉及金属表面处理技术领域， 具体涉及一种清洗除氧化皮剂及压铸铝工 件清洗除氧化皮处理方法。
背景技术
[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， 铝、 锌、 钢 铁合金的表面处理工艺深入各行各业中。 而且， 大多数工作在进及其行表面处 理前还需要经过预处理， 例如， 进行清洗， 除污除油， 某些用途的压铸铝工件 还需要进行除氧化皮处理
[0003] 通常， 压铸铝表面在压铸、 抛光、 钻孔等加工处理后产生的氧化物、 加工残留 的油污等， 这些油污、 氧化皮等需要用清洗除氧化皮剂去除， 使压铸铝表面清 洁干净， 使工件银亮有光， 从而解决了工件加工后不能钝化， 喷涂附着力差等 问题。 通常来说， 通过氢氟酸就可以除去氧化皮， 但是压铸铝经过氢氟酸处理 后会产生严重的黑灰， 使工件污染更严重。
技术问题
[0004] 有鉴于此， 提供一种无点腐蚀、 无气味、 除氧化皮效果好的清洗除氧化皮剂， 以及压铸铝工件除氧化皮处理方法。
问题的解决方案
技术解决方案
[0005] 一种清洗除氧化皮剂， 用于去除压铸铝工件表面氧化皮膜， 以 1000重量份计， 包括如下重量份数的成分： 10-50份氟硼酸， 10-50份磷酸， 50-300份盐酸， 5-20 份山梨糖醇， 0.3-3份壬基酚聚氧乙烯醚， 余量为水。
[0006] 以及， 一种压铸铝工件除氧化皮处理方法， 其包括下列步骤： 配制如上所述的 清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶液， 在清洗溶液中 清洗剂的质量百分含量为 20- 100%; 将压铸铝工件用清洗除氧化皮剂处理， 经过 预定吋间处理后， 水洗压铸铝工件， 干燥。 发明的有益效果
有益效果
[0007] 上述清洗除氧化皮剂无烟雾， 无气味， 室内外均可操作， 对工件无点腐蚀。 刷 洗、 喷洗和浸泡处理工件均可。 清洗除氧化皮剂能快速除去在压铸、 抛光、 钻 孔等加工处理后产生的氧化物、 加工残留的油污等， 使压铸铝表面清洁干净， 使工件银亮有光， 从而解决了工件加工后不能钝化， 喷涂附着力差等问题。
本发明的实施方式
[0008] 以下将结合具体实施例对本发明进行详细说明。
[0009] 本发明实施例提供一种清洗除氧化皮剂， 用于去除压铸铝工件表面氧化皮膜， 以 1000重量份计， 包括如下重量份数的成分： 10-50份氟硼酸， 10-50份磷酸， 50 -300份盐酸， 5-20份山梨糖醇， 0.3-3份壬基酚聚氧乙烯醚， 余量为水。
[0010] 具体地， 所述氟硼酸的重量份数优选为 15-45份。 所述磷酸的重量份数为 15-45 份。 所述盐酸的重量份数优选为 100-250份。 所述山梨糖醇的重量份数优选为 10- 20份。 所述壬基酚聚氧乙烯醚的重量份数优选为 1-3份。 具体地， 所述清洗除氧 化皮剂使用吋稀释质量浓度为 20-100%。 当然， 油污、 氧化皮严重的情况建议原 液使用， 不进行稀释。
[0011] 在上述清洗除氧化皮剂中， 通过控制各成分配比平衡， 以达到较佳除氧化皮效 果。 例如， 氟硼酸、 盐酸主要去除氧化皮， 其中盐酸还有洗白的功效， 磷酸稳 定槽液酸度， 山梨糖醇使反应细致均匀， 能防止工件过腐蚀， 壬基酚聚氧乙烯 醚和可以去除工件上的油污。
[0012] 本实施例的清洗除氧化皮剂适用于压铸铝等金属工件， 广泛用于各类五金加工 行业， 能快速除去在压铸、 抛光、 钻孔等加工处理后产生的氧化物、 加工残留 的油污等， 使压铸铝表面清洁干净， 使工件银亮有光， 从而解决了工件加工后 不能钝化， 喷涂附着力差等问题。
[0013] 本实施例的清洗除氧化皮剂无烟雾， 无气味， 室内外均可操作， 对工件无腐蚀 。 刷洗、 喷洗和浸泡均可， 浸泡效果最佳。 经处理后的压铸铝表面清洁干净， 银亮有光。 [0014] 本发明实施例还提供一种压铸铝工件除氧化皮处理方法， 其包括下列步骤： 配 制如上所述的清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶液， 在清洗溶液中清洗剂的质量百分含量为 20-100%; 将压铸铝工件用清洗除氧化皮 剂处理， 经过预定吋间处理后， 水洗压铸铝工件， 干燥。
[0015] 具体地， 对压铸铝工件除氧化皮处理吋， 可采用刷洗、 喷洗和浸泡等方式， 浸 泡效果最佳。 清洗处理吋， 清洗除氧化皮剂在常温下进行处理， 如 20-25度。 压 铸铝工件浸入清洗溶液的吋间优选为 1-30分钟。 清洗吋， 清洗溶液装在清洗槽中 ， 所述清洗槽采用耐酸塑料槽、 玻璃钢槽或低碳钢， 所述玻璃钢槽或低碳钢采 用 PVC塑料内衬， 所述清洗溶液清洗除氧化皮吋间为 1-30分钟。
[0016] 实施例 1
[0017] 按照下列重量份数混合各成分： 10份氟硼酸， 10份磷酸， 50份盐酸， 5份山梨 糖醇， 0.3份壬基酚聚氧乙烯醚， 余量为水， 搅拌， 混合均匀， 配制成清洗除氧 化皮剂。
[0018] 处理方法： 配制好清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶 液， 在清洗溶液中清洗剂的质量百分含量为 90%; 将压铸铝工件用清洗溶液清洗 除氧化皮， 处理 30分钟后， 水洗压铸铝工件， 干燥。
[0019] 经过上述清洗除氧化皮溶液处理后， 观察工件表面， 发现压铸铝工件表面洁净 光亮， 无脱模剂， 无点腐蚀， 颜色比之前白， 无油污， 氧化皮、 印迹存在。
[0020] 实施例 2
[0021] 按照下列重量份数混合各成分： 22份氟硼酸， 22份磷酸， 150份盐酸， 10份山 梨糖醇， 1份壬基酚聚氧乙烯醚， 余量为水， 搅拌， 混合均匀， 配制成清洗除氧 化皮剂。
[0022] 处理方法： 配制好清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶 液， 在清洗溶液中清洗剂的质量百分含量为 90%; 将压铸铝工件用清洗溶液清洗 除氧化皮， 处理 20分钟后， 水洗压铸铝工件， 干燥。
[0023] 经过上述清洗除氧化皮溶液处理后， 观察工件表面， 发现压铸铝工件表面洁净 光亮， 无脱模剂， 无点腐蚀， 颜色比之前白， 无油污， 氧化皮、 印迹存在。
[0024] 实施例 3 [0025] 按照下列重量份数混合各成分： 34份氟硼酸， 34份磷酸， 220份盐酸， 15份山 梨糖醇， 2份壬基酚聚氧乙烯醚， 余量为水， 搅拌， 混合均匀， 配制成清洗除氧 化皮剂。
[0026] 处理方法： 配制好清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶 液， 在清洗溶液中清洗剂的质量百分含量为 90%; 将压铸铝工件用清洗溶液清洗 除氧化皮， 处理 10分钟后， 水洗压铸铝工件， 干燥。
[0027] 经过上述清洗除氧化皮溶液处理后， 观察工件表面， 发现压铸铝工件表面洁净 光亮， 无脱模剂， 无点腐蚀， 颜色比之前白， 无油污， 氧化皮、 印迹存在。
[0028] 实施例 4
[0029] 按照下列重量份数混合各成分： 50份氟硼酸， 50份磷酸， 300份盐酸， 20份山 梨糖醇， 3份壬基酚聚氧乙烯醚， 余量为水， 搅拌， 混合均匀， 配制成清洗除氧 化皮剂。
[0030] 处理方法： 配制好清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配制成清洗溶 液， 在清洗溶液中清洗剂的质量百分含量为 90%; 将压铸铝工件用清洗溶液清洗 除氧化皮， 处理 5分钟后， 水洗压铸铝工件， 干燥。
[0031] 经过上述清洗除氧化皮溶液处理后， 观察工件表面， 发现压铸铝工件表面洁净 光亮， 无脱模剂， 无点腐蚀， 颜色比之前白， 无油污， 氧化皮、 印迹存在。
[0032] 经过上述清洗溶液处理后， 观察工件表面， 发现压铸铝工件表面光洁平滑， 无 点腐蚀， 亮度比之前有所增加， 无油污， 氧化皮迹存在。
[0033] 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。

Claims

权利要求书
[权利要求 1] 一种清洗除氧化皮剂， 用于去除压铸铝工件表面氧化皮膜， 其特征在 于， 以 100重量份计， 包括如下重量份数的成分： 10-50份氟硼酸， 10 -50份磷酸， 50-300份盐酸， 5-20份山梨糖醇， 0.3-3份壬基酚聚氧乙烯 醚， 余量为水。
[权利要求 2] 如权利要求 1所述的清洗除氧化皮剂， 其特征在于， 所述氟硼酸的重 量份数为 15-45份。
[权利要求 3] 如权利要求 1所述的清洗除氧化皮剂， 其特征在于， 所述磷酸的重量 份数为 15-45份， 所述盐酸的重量份数为 100-250份。
[权利要求 4] 如权利要求 1所述的清洗除氧化皮剂， 其特征在于， 所述山梨糖醇的 重量份数为 10-20份。
[权利要求 5] 如权利要求 1所述的清洗除氧化皮剂， 其特征在于， 所述壬基酚聚氧 乙烯醚的重量份数为 1-3份。
[权利要求 6] 如权利要求 1所述的清洗除氧化皮剂， 其特征在于， 所述清洗除氧化 皮剂使用吋稀释质量浓度为 20-100%。
[权利要求 7] 一种压铸铝工件除氧化皮处理方法， 其包括下列步骤： 配制如权利要 求 1-5任一项所述的清洗除氧化皮剂； 将清洗除氧化皮剂溶于水中配 制成清洗溶液， 在清洗溶液中清洗剂的质量百分含量为 40-100%; 将 压铸铝工件用清洗除氧化皮处理， 经过预定吋间处理后， 水洗压铸铝 工件， 干燥。
[权利要求 8] 如权利要求 7所述的压铸铝工件除氧化皮处理方法， 其特征在于， 所 述清洗除氧化皮剂使用吋稀释质量浓度为 20-100%。
[权利要求 9] 如权利要求 7所述的压铸铝工件除氧化皮处理方法， 其特征在于， 所 述清洗溶液清洗除氧化皮吋用浸泡、 喷洗或刷洗压铸铝工件。
[权利要求 10] 如权利要求 7所述的压铸铝工件除氧化皮处理方法， 其特征在于， 所 述清洗溶液装在清洗槽中， 所述清洗槽采用耐酸塑料槽、 玻璃钢槽或 压铸铝， 所述玻璃钢槽或低碳钢采用 PVC塑料内衬， 所述清洗溶液清 洗除氧化皮吋间为 1-30分钟。
PCT/CN2017/091301 2017-06-30 2017-06-30 清洗除氧化皮剂及压铸铝工件除氧化皮处理方法 WO2019000446A1 (zh)

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