CN110724945A - 一种镀锌钢板的表面钝化处理工艺 - Google Patents

一种镀锌钢板的表面钝化处理工艺 Download PDF

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CN110724945A
CN110724945A CN201911232301.6A CN201911232301A CN110724945A CN 110724945 A CN110724945 A CN 110724945A CN 201911232301 A CN201911232301 A CN 201911232301A CN 110724945 A CN110724945 A CN 110724945A
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steel plate
parts
passivation
steel sheet
galvanized steel
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Inventor
郁霞秋
黄忠伟
王勇
林昱光
张小威
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Changjiang Runfa (jiangsu) Thin Plate Coating Co Ltd
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Changjiang Runfa (jiangsu) Thin Plate Coating Co Ltd
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Priority to CN201911232301.6A priority Critical patent/CN110724945A/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
    • 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
    • C23C22/42—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 phosphates
    • 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
    • C23C22/73—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 characterised by the process
    • 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
    • C23C22/78—Pretreatment of the material to be coated

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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

一种镀锌钢板的表面钝化处理工艺，所述处理工艺包括以下步骤：(1)钢板表面预处理：(2)钢板钝化处理(3)清洗干燥处理：本发明具有耐腐耐锈、工艺简单等优点。

Description

一种镀锌钢板的表面钝化处理工艺
技术领域
本发明涉及镀锌钢板加工技术领域，具体涉及一种镀锌钢板的表面钝化处理工艺。
背景技术
钢板是现代人们生活中必不可少的原材料之一，在铸造、建筑、建材、汽车等行业应用广泛。但钢板在自然条件下容易腐蚀变质，每年因腐蚀造成无法利用的钢板不计其数，因此提升钢板的耐腐性能显得尤为必要；。锌在干燥的空气当中几乎不发生变化，在含氧和二氧化碳的环境中会生成一层薄膜，使其具有良好的防腐蚀性能。基于此性能，锌镀层被广泛应用于钢材表面的镀覆；对于锌层的钝化处理，其效果还与处理的工艺有关，合理的钝化处理工艺有助于提升钝化层的强度、耐腐性等性能，有助于进一步提升钢板的使用寿命，而目前人们对于钝化处理工艺的方式较为单一，仍需进一步的改进。发明内容
(一)解决的技术问题
本发明提供一种镀锌钢板的表面钝化处理工艺，具有耐腐耐锈、工艺简单等优点。
(二)采用的技术方案
本发明为实现上述目的，通过以下技术方案予以实现：一种镀锌钢板的表面钝化处理工艺，所述处理工艺包括以下步骤：
(1)钢板表面预处理：首先对钢板表面进行打磨处理，去除氧化物膜层，之后通过除油剂进行除油处理，浸泡处理10-20分钟，最后用去离子水冲洗干净备用：
(2)钢板钝化处理：a.将上述处理好的钢板放入一次钝化液中进行浸泡2-3min,之后去除备用；b.将操作a处理后的镀锌钢板放入二次钝化液中，向其中通入电流密度为170-200mA/dm2的电流，处理3-4s后取出备用；所述一次、二次钝化液由以下重量成份的原料制备而成：15-20份钼酸盐、5-7份钨酸盐、5-8份植酸、3-6份磷酸、0.3-0.6份聚乙二醇辛基苯基醚、6-8份钝化助剂、300-500份水；
(3)清洗干燥处理：用去离子水对步骤(2)处理后的钢板表面清洗一次后，再将其放入干燥室内干燥处理30-50min后取出即可。
作为本方案的进一步优化，所述步骤(1)中除油剂为微碱性除油液。
作为本方案的进一步优化，所述步骤(3)干燥处理时的温度控制为65-75℃。
(三)有益效果
本发明提供一种镀锌钢板的表面钝化处理工艺，具有以下有益效果：
本发明通过对镀锌钢板进行钝化处理，有效提升了钝化膜的致密性、均匀性和厚度，从而提高了镀锌钢板的耐腐耐锈能力，改善了其综合使用品质，延长了使用寿命，且工艺方法简单，易于推广。
具体实施方式
本说明书中公开的所有特征，或公开的所有方法或过程中的步骤，除了互相排斥的特征和/或步骤以外，均可以以任何方式组合。
本说明书(包括任何附加权利要求、摘要)中公开的任一特征，除非特别叙述，均可被其他等效或具有类似目的的替代特征加以替换。即，除非特别叙述，每个特征只是一系列等效或类似特征中的一个例子而已。
实施例
一种镀锌钢板的表面钝化处理工艺，所述处理工艺包括以下步骤：
(1)钢板表面预处理：首先对钢板表面进行打磨处理，去除氧化物膜层，之后通过除油剂进行除油处理，浸泡处理10-20分钟，最后用去离子水冲洗干净备用：
(2)钢板钝化处理：a.将上述处理好的钢板放入一次钝化液中进行浸泡2-3min,之后去除备用；b.将操作a处理后的镀锌钢板放入二次钝化液中，向其中通入电流密度为170-200mA/dm2的电流，处理3-4s后取出备用；所述一次、二次钝化液由以下重量成份的原料制备而成：15-20份钼酸盐、5-7份钨酸盐、5-8份植酸、3-6份磷酸、0.3-0.6份聚乙二醇辛基苯基醚、6-8份钝化助剂、300-500份水；
(3)清洗干燥处理：用去离子水对步骤(2)处理后的钢板表面清洗一次后，再将其放入干燥室内干燥处理30-50min后取出即可。
作为本方案的进一步优化，所述步骤(1)中除油剂为微碱性除油液。
作为本方案的进一步优化，所述步骤(3)干燥处理时的温度控制为65-75℃。
本发明通过对镀锌钢板进行钝化处理，有效提升了钝化膜的致密性、均匀性和厚度，从而提高了镀锌钢板的耐腐耐锈能力，改善了其综合使用品质，延长了使用寿命，且工艺方法简单，易于推广。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (3)

1.一种镀锌钢板的表面钝化处理工艺，其特征在于，所述处理工艺包括以下步骤：
(1)钢板表面预处理：首先对钢板表面进行打磨处理，去除氧化物膜层，之后通过除油剂进行除油处理，浸泡处理10-20分钟，最后用去离子水冲洗干净备用：
(2)钢板钝化处理：a.将上述处理好的钢板放入一次钝化液中进行浸泡2-3min,之后去除备用；b.将操作a处理后的镀锌钢板放入二次钝化液中，向其中通入电流密度为170-200mA/dm2的电流，处理3-4s后取出备用；所述一次、二次钝化液由以下重量成份的原料制备而成：15-20份钼酸盐、5-7份钨酸盐、5-8份植酸、3-6份磷酸、0.3-0.6份聚乙二醇辛基苯基醚、6-8份钝化助剂、300-500份水；
(3)清洗干燥处理：用去离子水对步骤(2)处理后的钢板表面清洗一次后，再将其放入干燥室内干燥处理30-50min后取出即可。
2.根据权利要求1所述的一种镀锌钢板的表面钝化处理工艺，其特征在于，所述步骤(1)中除油剂为微碱性除油液。
3.根据权利要求1所述的一种镀锌钢板的表面钝化处理工艺，其特征在于，所述步骤(3)干燥处理时的温度控制为65-75℃。
CN201911232301.6A 2019-12-05 2019-12-05 一种镀锌钢板的表面钝化处理工艺 Pending CN110724945A (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080145549A1 (en) * 2006-12-19 2008-06-19 Kidambi Srikanth S Functionalized amine-based corrosion inhibitors for galvanized metal surfaces and method of using same
US20100285334A1 (en) * 2009-05-11 2010-11-11 Ppg Industries, Inc. Methods for passivating a metal substrate and related coated metal substrates
CN102634784A (zh) * 2012-04-24 2012-08-15 江苏金华厦电气有限公司 核电桥架的表面处理方法
CN106399995A (zh) * 2016-11-30 2017-02-15 淄博传能新材料科技有限公司 一种无铬热镀锌钝化液及其制备方法
CN106756942A (zh) * 2016-12-16 2017-05-31 安徽宝恒新材料科技有限公司 一种不锈钢用无铬钝化液
CN107326357A (zh) * 2017-08-02 2017-11-07 合肥市田源精铸有限公司 一种镀锌钢板的钝化处理工艺
CN107419257A (zh) * 2017-07-04 2017-12-01 安徽腾龙泵阀制造有限公司 一种镀锌钢板的表面钝化处理工艺

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080145549A1 (en) * 2006-12-19 2008-06-19 Kidambi Srikanth S Functionalized amine-based corrosion inhibitors for galvanized metal surfaces and method of using same
US20100285334A1 (en) * 2009-05-11 2010-11-11 Ppg Industries, Inc. Methods for passivating a metal substrate and related coated metal substrates
CN102634784A (zh) * 2012-04-24 2012-08-15 江苏金华厦电气有限公司 核电桥架的表面处理方法
CN106399995A (zh) * 2016-11-30 2017-02-15 淄博传能新材料科技有限公司 一种无铬热镀锌钝化液及其制备方法
CN106756942A (zh) * 2016-12-16 2017-05-31 安徽宝恒新材料科技有限公司 一种不锈钢用无铬钝化液
CN107419257A (zh) * 2017-07-04 2017-12-01 安徽腾龙泵阀制造有限公司 一种镀锌钢板的表面钝化处理工艺
CN107326357A (zh) * 2017-08-02 2017-11-07 合肥市田源精铸有限公司 一种镀锌钢板的钝化处理工艺

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Application publication date: 20200124