CN112760589A - 一种耐海洋性气候的钢铁结构铁塔的防腐处理方法 - Google Patents

一种耐海洋性气候的钢铁结构铁塔的防腐处理方法 Download PDF

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CN112760589A
CN112760589A CN202011427514.7A CN202011427514A CN112760589A CN 112760589 A CN112760589 A CN 112760589A CN 202011427514 A CN202011427514 A CN 202011427514A CN 112760589 A CN112760589 A CN 112760589A
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steel structure
iron tower
structure iron
corrosion
spraying
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邱芳
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Jinzhou Electric Power Supply Co Of State Grid Liaoning Electric Power Supply Co ltd
State Grid Corp of China SGCC
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Jinzhou Electric Power Supply Co Of State Grid Liaoning Electric Power Supply Co ltd
State Grid Corp of China SGCC
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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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

一种耐海洋性气候的钢结构铁塔的防腐处理方法，首先，对钢结构铁塔进行表面净化处理和喷砂除锈；然后，在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为8.8%～9.2%；喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在60度‑75度，喷涂设备工作电流为300～600A，喷涂工作电压为20～30V，电弧喷涂钢结构涂层厚度为150～200μm。优点是：电弧喷涂锌铝涂层使钢结构铁塔，成膜性好，附着力强，在海洋环境中使用寿命长，耐酸耐碱抗腐蚀性高，避免涂层针孔的存在，涂层硬度高，耐磨抗冲击，耐酸碱老化时间长，对钢结构铁塔起到防腐蚀的作用。

Description

一种耐海洋性气候的钢铁结构铁塔的防腐处理方法
技术领域
本发明涉及一种耐海洋性气候的钢铁结构铁塔的防腐处理方法。
背景技术
随电网建设的不断发展，钢铁结构铁塔的大范围使用，沿海地区钢铁结构铁塔耐腐蚀问题成为钢铁结构铁塔应用的主要问题。由于船海水、雾、海风的侵蚀，气温变化、日光照射的影响，从而加速漆膜的失光、粉化，甚至开裂脱落，氯离子长期存在，会促进腐蚀反应，加快腐蚀速率，氯离子的腐蚀首先是点腐蚀缝隙，或腐蚀凹面上开始，使被破坏的钝化膜无法修复。故腐蚀不断加深，直至金属呈枝状裂纹而被破坏，加上其有很强的穿透性，极易穿透金属表面的保护膜，造成缝隙腐蚀和孔蚀，缩短钢结构铁塔使用年限。
发明内容
本发明要解决的技术问题是提供一种耐海洋性气候的钢结构铁塔的防腐处理方法，在海洋环境中使用寿命长，耐酸耐碱抗腐蚀性高，避免涂层针孔的存在，涂层硬度高，耐磨抗冲击，耐酸碱老化时间长，可对钢结构铁塔起到防腐蚀的作用。
本发明的技术方案是：
一种耐海洋性气候的钢结构铁塔的防腐处理方法，具体步骤如下：
(1)基面清理
对钢结构铁塔进行表面净化处理和喷砂除锈；
(2)钢结构铁塔防腐
在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为8.8%～9.2%；
喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在60度-75度，喷涂设备工作电流为300～600A，喷涂工作电压为20～30V，电弧喷涂钢结构涂层厚度为150～200μm。
进一步的，喷砂除锈时，喷枪嘴径为8-12mm。
进一步的，喷砂除锈时，喷砂磨料为冷激钢砂。
进一步的，冷激钢砂粒度组成为：粗磨料10%-15%，细磨料：0.5-1mm占35%-40%，1-2mm占50%。
本发明的有益效果是：
采用表面净化处理和喷砂除锈，使得钢结构铁塔除锈后有效避免了二次锈蚀，电弧喷涂锌铝涂层使钢结构铁塔，成膜性好，附着力强，在海洋环境中使用寿命长，耐酸耐碱抗腐蚀性高，避免涂层针孔的存在，涂层硬度高，耐磨抗冲击，耐酸碱老化时间长，对钢结构铁塔起到防腐蚀的作用。
具体实施方式
实施例1
(1)基面清理
对钢结构铁塔先进行表面净化处理，然后进行喷砂除锈，喷砂除锈时，喷枪嘴径为8mm，喷砂磨料为冷激钢砂，冷激钢砂粒度组成为：粗磨料15%，细磨料：0.5-1mm占35%，1-2mm占50%；
(2)钢结构铁塔防腐
在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为8.8%；
喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在60度，喷涂设备工作电流为300A，喷涂工作电压为30V，电弧喷涂钢结构涂层厚度为150μm。
实施例2
(1)基面清理
对钢结构铁塔先进行表面净化处理，然后进行喷砂除锈，喷砂除锈时，喷枪嘴径为12mm，喷砂磨料为冷激钢砂，冷激钢砂粒度组成为：粗磨料10%，细磨料：0.5-1mm占40%，1-2mm占50%；
(2)钢结构铁塔防腐
在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为9.2%；
喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在60度，喷涂设备工作电流为600A，喷涂工作电压为20V，电弧喷涂钢结构涂层厚度为200μm。
实施例3
(1)基面清理
对钢结构铁塔先进行表面净化处理，然后进行喷砂除锈，喷砂除锈时，喷枪嘴径为10mm，喷砂磨料为冷激钢砂，冷激钢砂粒度组成为：粗磨料12%，细磨料：0.5-1mm占38%，1-2mm占50%；
(2)钢结构铁塔防腐
在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为9%；
喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在75度，喷涂设备工作电流为500A，喷涂工作电压为25V，电弧喷涂钢结构涂层厚度为180μm。
以上仅为本发明的具体实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (4)

1.一种耐海洋性气候的钢结构铁塔的防腐处理方法，其特征是：
具体步骤如下：
(1)基面清理
对钢结构铁塔进行表面净化处理和喷砂除锈；
(2)钢结构铁塔防腐
在喷砂除锈8h内对钢结构铁塔采用电弧喷涂锌铝防腐涂层的方式进行防腐处理，锌铝镀层中铝含量为8.8%～9.2%；
喷枪与基体表面的距离控制在150～180mm，喷涂角度控制在60度-75度，喷涂设备工作电流为300～600A，喷涂工作电压为20～30V，电弧喷涂钢结构涂层厚度为150～200μm。
2.根据权利要求1所述的耐海洋性气候的钢结构铁塔的防腐处理方法，其特征是：喷砂除锈时，喷枪嘴径为8-12mm。
3.根据权利要求1所述的耐海洋性气候的钢结构铁塔的防腐处理方法，其特征是：喷砂除锈时，喷砂磨料为冷激钢砂。
4.根据权利要求1所述的耐海洋性气候的钢结构铁塔的防腐处理方法，其特征是：冷激钢砂粒度组成为：粗磨料10%-15%，细磨料：0.5-1mm占35%-40%，1-2mm占50%。
CN202011427514.7A 2020-12-09 2020-12-09 一种耐海洋性气候的钢铁结构铁塔的防腐处理方法 Pending CN112760589A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113308134A (zh) * 2021-07-12 2021-08-27 贵州电网有限责任公司 一种输电铁塔用中熵高分子复合涂层材料及制备方法

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JPH0517881A (ja) * 1991-07-11 1993-01-26 Nippon Steel Corp 耐蝕性熱間圧延鋼板の製造方法
JP2002020826A (ja) * 2000-07-05 2002-01-23 Dowa Mining Co Ltd Ｚｎ−Ａｌ合金線およびその製造方法並びにＺｎ−Ａｌ合金線材
JP2002180230A (ja) * 2000-12-07 2002-06-26 Ariyasu Kurimoto 溶射用合金線材
US20030049157A1 (en) * 2000-09-06 2003-03-13 Grillo-Werke Ag Wire based on zinc and aluminum and its use in thermal spraying for corrosion protection
CN103373033A (zh) * 2012-04-17 2013-10-30 新兴铸管股份有限公司 Zn-Al-Mg-RE伪合金涂层及其制备方法

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JPH0517881A (ja) * 1991-07-11 1993-01-26 Nippon Steel Corp 耐蝕性熱間圧延鋼板の製造方法
JP2002020826A (ja) * 2000-07-05 2002-01-23 Dowa Mining Co Ltd Ｚｎ−Ａｌ合金線およびその製造方法並びにＺｎ−Ａｌ合金線材
US20030049157A1 (en) * 2000-09-06 2003-03-13 Grillo-Werke Ag Wire based on zinc and aluminum and its use in thermal spraying for corrosion protection
JP2002180230A (ja) * 2000-12-07 2002-06-26 Ariyasu Kurimoto 溶射用合金線材
CN103373033A (zh) * 2012-04-17 2013-10-30 新兴铸管股份有限公司 Zn-Al-Mg-RE伪合金涂层及其制备方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113308134A (zh) * 2021-07-12 2021-08-27 贵州电网有限责任公司 一种输电铁塔用中熵高分子复合涂层材料及制备方法

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Application publication date: 20210507