CN108754393A - 一种钢结构防腐工艺 - Google Patents

一种钢结构防腐工艺 Download PDF

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CN108754393A
CN108754393A CN201810606935.2A CN201810606935A CN108754393A CN 108754393 A CN108754393 A CN 108754393A CN 201810606935 A CN201810606935 A CN 201810606935A CN 108754393 A CN108754393 A CN 108754393A
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aluminium
spray
electric arc
spraying
control
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石焕喜
刘彬
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Tianjin Shore Steel Structure Engineering Co Ltd
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Tianjin Shore Steel Structure Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50Multilayers
    • B05D7/52Two layers
    • B05D7/54No clear coat specified
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06Metallic material
    • C23C4/08Metallic material containing only metal elements
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131Wire arc spraying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00Metallic substrate
    • B05D2202/20Metallic substrate based on light metals
    • B05D2202/25Metallic substrate based on light metals based on Al

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

本发明是一种钢结构防腐工艺,其步骤包括表面净化处理、喷砂除锈、喷涂底漆和喷涂面漆;其特点是,还包括电弧喷铝步骤,电弧喷铝步骤设置在喷砂除锈步骤之后和喷涂底漆步骤之前;所述的电弧喷铝是采用电弧喷枪,以电弧为热源,将纯度≥99.5%的线状铝丝加热到熔融状态,同时用压缩空气将熔融的铝吹成雾状,并形成受约束的颗粒流,均匀喷涂在基体表面形成一层铝层。本发明所述的一种钢结构防腐工艺,其防腐涂层与钢结构基体的结合力强,平均达到13Mpa,大大高于国家标准,能达到长效防腐的目的,而且改善了结构的外观。

Description

一种钢结构防腐工艺
技术领域
本发明涉及钢结构领域,尤其涉及一种钢结构防腐工艺。
背景技术
曝露在野外环境中的钢结构,其表面极易与周围环境发生化学及电化学作用而锈蚀。因此需要在其表面涂覆一层防腐层以保护钢结构本体不被锈蚀。但当钢结构表面的防腐涂层性能较差而破损时,也会使钢结构本体暴露在外而产生锈蚀。钢结构建筑一般为大型的永久性建筑,服务年限长,维修困难,必须进行有效的长效防腐,以确保建筑物的使用寿命。
为此,设计一种钢结构防腐工艺,解决以上问题。
发明内容
本发明为克服以上不足,提供一种钢结构防腐工艺,其步骤包括表面净化处理、喷砂除锈、喷涂底漆和喷涂面漆;其特点是,还包括电弧喷铝步骤,电弧喷铝步骤设置在喷砂除锈步骤之后和喷涂底漆步骤之前;所述的电弧喷铝是采用电弧喷枪,以电弧为热源,将纯度≥ 99.5%的线状铝丝加热到熔融状态,同时用压缩空气将熔融的铝吹成雾状,并形成受约束的颗粒流,均匀喷涂在基体表面形成一层铝层。
进一步,所述的电弧喷铝时喷枪与基体表面的距离控制在150~200mm,喷涂角度控制在75度,喷枪移动速度控制在350mm/s,铝丝的输送速度控制在2.5m/min;电弧电压控制在30V,电弧电流控制在 200A,压缩空气压力控制在0.65Mpa。
进一步,所述的电弧喷铝采用分层喷涂,喷涂前一层的喷涂方向与喷涂后一层的喷涂方向形成60度的交叉;喷涂完成后形成的铝层厚度控制在180-220μm,表面粗糙度控制在Rz50-70μm。
进一步,所述的喷砂除锈采用带棱角钢砂,砂粒大小控制在1mm,喷砂气体压力控制在0.55MPa,喷砂距离控制在150mm,喷砂角度控制在75度。
进一步,所述的喷涂底漆和喷涂面漆分别采用高压无气喷涂设备进行喷涂,压力控制在0.55Mpa,喷涂距离控制在150mm,喷枪与基体表面的角度控制在60度,喷枪均匀移动速度控制在350mm/s。
本发明的有益效果是:
本发明所述的一种钢结构防腐工艺,其防腐涂层与钢结构基体的结合力强,平均达到13Mpa,大大高于国家标准,能达到长效防腐的目的,而且改善了结构的外观。
具体实施方式
以下将结合本发明的实施例进行详细叙述。
一种钢结构防腐工艺,其步骤包括表面净化处理、喷砂除锈、喷涂底漆和喷涂面漆;其特点是,还包括电弧喷铝步骤,电弧喷铝步骤设置在喷砂除锈步骤之后和喷涂底漆步骤之前;所述的电弧喷铝是采用电弧喷枪,以电弧为热源,将纯度≥99.5%的线状铝丝加热到熔融状态,同时用压缩空气将熔融的铝吹成雾状,并形成受约束的颗粒流,均匀喷涂在基体表面形成一层铝层。
进一步,所述的电弧喷铝时喷枪与基体表面的距离控制在150~ 200mm,喷涂角度控制在75度,喷枪移动速度控制在350mm/s,铝丝的输送速度控制在2.5m/min;电弧电压控制在30V,电弧电流控制在 200A,压缩空气压力控制在0.65Mpa。
进一步,所述的电弧喷铝采用分层喷涂,喷涂前一层的喷涂方向与喷涂后一层的喷涂方向形成60度的交叉;喷涂完成后形成的铝层厚度控制在180-220μm,表面粗糙度控制在Rz50-70μm。
进一步,所述的喷砂除锈采用带棱角钢砂,砂粒大小控制在1mm,喷砂气体压力控制在0.55MPa,喷砂距离控制在150mm,喷砂角度控制在75度。
进一步,所述的喷涂底漆和喷涂面漆分别采用高压无气喷涂设备进行喷涂,压力控制在0.55Mpa,喷涂距离控制在150mm,喷枪与基体表面的角度控制在60度,喷枪均匀移动速度控制在350mm/s。
该涂层与钢结构基体的结合力高,平均达到13.0Mpa,大大高于国家标准,使用寿命超过45年。
需要说明的是,在不冲突的情况下,本发明中的实施例及实施例中的特征可以相互组合。以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。

Claims (5)

1.一种钢结构防腐工艺,其特征在于,其步骤包括表面净化处理、喷砂除锈、喷涂底漆和喷涂面漆;其特点是,还包括电弧喷铝步骤,电弧喷铝步骤设置在喷砂除锈步骤之后和喷涂底漆步骤之前;所述的电弧喷铝是采用电弧喷枪,以电弧为热源,将纯度≥99.5%的线状铝丝加热到熔融状态,同时用压缩空气将熔融的铝吹成雾状,并形成受约束的颗粒流,均匀喷涂在基体表面形成一层铝层。
2.根据权利要求1所述的,其特征在于,所述的电弧喷铝时喷枪与基体表面的距离控制在150~200mm,喷涂角度控制在75度,喷枪移动速度控制在350mm/s,铝丝的输送速度控制在2.5m/min;电弧电压控制在30V,电弧电流控制在200A,压缩空气压力控制在0.65Mpa。
3.根据权利要求2所述的,其特征在于,所述的电弧喷铝采用分层喷涂,喷涂前一层的喷涂方向与喷涂后一层的喷涂方向形成60度的交叉;喷涂完成后形成的铝层厚度控制在180-220μm,表面粗糙度控制在Rz50-70μm。
4.根据权利要求3所述的,其特征在于,所述的喷砂除锈采用带棱角钢砂,砂粒大小控制在1mm,喷砂气体压力控制在0.55MPa,喷砂距离控制在150mm,喷砂角度控制在75度。
5.根据权利要求4所述的,其特征在于,所述的喷涂底漆和喷涂面漆分别采用高压无气喷涂设备进行喷涂,压力控制在0.55Mpa,喷涂距离控制在150mm,喷枪与基体表面的角度控制在60度,喷枪均匀移动速度控制在350mm/s。
CN201810606935.2A 2018-06-13 2018-06-13 一种钢结构防腐工艺 Pending CN108754393A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111364033A (zh) * 2020-03-31 2020-07-03 太仓红马机械设备制造有限公司 一种适用于垃圾焚烧炉钢构件的防腐耐磨处理工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111364033A (zh) * 2020-03-31 2020-07-03 太仓红马机械设备制造有限公司 一种适用于垃圾焚烧炉钢构件的防腐耐磨处理工艺

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