CN114798362A - 一种高强度抗拉型合金钢管的表面涂装工艺 - Google Patents
一种高强度抗拉型合金钢管的表面涂装工艺 Download PDFInfo
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- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
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- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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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
- C23C4/04—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
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
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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
- C23C4/129—Flame spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
本发明涉及合金钢管表面涂装技术领域,尤其是一种高强度抗拉型合金钢管的表面涂装工艺,包括如下步骤:S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后进行Ar离子轰击清洗,清洗完毕后,蒸馏水再冲洗一遍,晾干;S2、将合金钢管预热至50~80℃后,在其表面制备一层厚80~100μm的NiCrAlY合金涂层,风冷至室温;S3、在NiCrAlY合金涂层表面喷涂环氧底漆,晾干10min左右后,喷涂金属氟碳漆,自然晾干。本发明的涂装方法可以保证涂层全覆盖合金钢管,从而形成完整的致密保护外层,涂层不易剥落,且具有良好的耐腐蚀性和耐候性,大大延长合金钢管的使用寿命。
Description
技术领域
本发明涉及合金钢管表面涂装技术领域,尤其是一种高强度抗拉型合金钢管的表面涂装工艺。
背景技术
合金钢管具有中空截面,与圆钢等实心钢材相比,在抗弯抗扭强度相同时,重量较轻,可用作输送流体的管道,如输送石油、天然气、煤气、水及某些固体物料的管道等。同时,合金钢管是一种经济截面钢材,广泛用于制造结构件和机械零件,如石油钻杆、汽车传动轴、自行车架以及建筑施工中用的钢脚手架等。暴露在外的合金钢管外表面容易氧化而锈蚀,而隐埋在地下的钢管,由于接触地下的活性物质,易发生腐蚀的现象。这种锈蚀或腐蚀,都会缩短钢管道的使用周期。因此,在钢管安装前,一般都需对钢管表面进行涂装。传统的钢管涂装工艺由于各种原因,普遍存在喷涂不完整,涂层易存在漏洞、瑕疵,易剥落,导致钢管的使用寿命短。
发明内容
为解决上述技术问题,本发明提供了一种高强度抗拉型合金钢管的表面涂装工艺,可以保证涂层全覆盖合金钢管,从而形成完整的致密保护外层,涂层不易剥落,且具有良好的耐腐蚀性和耐候性,大大延长合金钢管的使用寿命。
为解决上述技术问题,本发明所采取的技术方案如下。
一种高强度抗拉型合金钢管的表面涂装工艺,包括如下步骤:
S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后进行Ar离子轰击清洗,清洗完毕后,蒸馏水再冲洗一遍,晾干;
S2、将合金钢管预热至50~80℃后,在其表面制备一层厚80~100μm的NiCrAlY合金涂层,风冷至室温;
S3、在NiCrAlY合金涂层表面喷涂环氧底漆,晾干10min左右后,喷涂金属氟碳漆,自然晾干。
作为本方案的进一步地设计,步骤S1中,超声波清洗的功率为15~30kHz,温度为25~40℃。
作为本方案的进一步地设计,步骤S1中,在Ar气压力1~1.5Pa,气体离子源功率0.2~2.0kW和偏压300~800V的条件下,用Ar离子轰击清洗20~30min。
作为本方案的进一步地设计,还包括基于视觉检测系统用于检测涂层、底漆、金属氟碳漆的外观状态的步骤,识别是否有漏喷、瑕疵现象。
作为本方案的进一步地设计,NiCrAlY合金涂层采用Ni25CrAlY涂层。
作为本方案的进一步地设计,采用超音速火焰喷涂技术在合金钢管表面制备NiCrAlY合金涂层。
作为本方案的进一步地设计,环氧底漆厚度为0.05~0.5mm,金属氟碳漆的厚度为0.05~0.5mm。
本发明具有以下有益效果:
可以保证涂层全覆盖合金钢管,从而形成完整的致密保护外层,涂层不易剥落,且具有良好的耐腐蚀性和耐候性,大大延长合金钢管的使用寿命。
具体实施方式
为了使本发明的目的及优点更加清楚明白,以下结合实施例对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例1
一种高强度抗拉型合金钢管的表面涂装工艺,包括如下步骤:
S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后在Ar气压力1 Pa,气体离子源功率1.0kW和偏压300 V的条件下,用Ar离子轰击清洗30min,清洗完毕后,蒸馏水再冲洗一遍,晾干;其中,超声波清洗的功率为15kHz,温度为40℃;
S2、将合金钢管预热至50℃后,在其表面采用超音速火焰喷涂技术制备一层厚80μm的Ni25CrAlY合金涂层,风冷至50℃后,基于视觉检测系统检测涂层的外观状态,识别是否有漏喷、瑕疵现象,并根据漏喷、瑕疵的情况配置对应的补喷方案,完成补喷,直至所得的涂层表面无漏喷、瑕疵现象,风冷至室温;
S3、在Ni25CrAlY合金涂层表面喷涂环氧底漆,基于视觉检测检测底漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的底漆表面无漏喷、瑕疵现象,晾干10min左右,然后喷涂金属氟碳漆,基于视觉检测检测金属氟碳漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的金属氟碳漆表面无漏喷、瑕疵现象,自然晾干。
本实施例中,环氧底漆厚度为 0.05mm,金属氟碳漆的厚度为0.05mm。
性能:拉开法附着力26.7MPa,耐化学介质性90d漆膜完好,耐盐雾性能3000h漆膜完好。
实施例2
一种高强度抗拉型合金钢管的表面涂装工艺,包括如下步骤:
S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后在Ar气压力1.5Pa,气体离子源功率2.0kW和偏压800V的条件下,用Ar离子轰击清洗20min,清洗完毕后,蒸馏水再冲洗一遍,晾干;其中,超声波清洗的功率为30kHz,温度为25℃;
S2、将合金钢管预热至80℃后,在其表面采用超音速火焰喷涂技术制备一层厚100μm的Ni25CrAlY合金涂层,风冷至80℃后,基于视觉检测系统检测涂层的外观状态,识别是否有漏喷、瑕疵现象,并根据漏喷、瑕疵的情况配置对应的补喷方案,完成补喷,直至所得的涂层表面无漏喷、瑕疵现象,风冷至室温;
S3、在Ni25CrAlY合金涂层表面喷涂环氧底漆,基于视觉检测检测底漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的底漆表面无漏喷、瑕疵现象,晾干10min左右,然后喷涂金属氟碳漆,基于视觉检测检测金属氟碳漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的金属氟碳漆表面无漏喷、瑕疵现象,自然晾干。
本实施例中,环氧底漆厚度为0.5mm,金属氟碳漆的厚度为0.5mm。
性能:拉开法附着力28.9MPa,耐化学介质性90d漆膜完好,耐盐雾性能3000h漆膜完好。
实施例3
一种高强度抗拉型合金钢管的表面涂装工艺,包括如下步骤:
S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后在Ar气压力1.2 Pa,气体离子源功率1.0kW和偏压500V的条件下,用Ar离子轰击清洗25min,清洗完毕后,蒸馏水再冲洗一遍,晾干;其中,超声波清洗的功率为22 kHz,温度为32℃;
S2、将合金钢管预热至65℃后,在其表面采用超音速火焰喷涂技术制备一层厚90μm的Ni25CrAlY合金涂层,风冷至65℃后,基于视觉检测系统检测涂层的外观状态,识别是否有漏喷、瑕疵现象,并根据漏喷、瑕疵的情况配置对应的补喷方案,完成补喷,直至所得的涂层表面无漏喷、瑕疵现象,风冷至室温;
S3、在Ni25CrAlY合金涂层表面喷涂环氧底漆,基于视觉检测检测底漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的底漆表面无漏喷、瑕疵现象,晾干10min左右,然后喷涂金属氟碳漆,基于视觉检测检测金属氟碳漆的外观状态的步骤,识别是否有漏喷、瑕疵现象,完成补喷,直至所得的金属氟碳漆表面无漏喷、瑕疵现象,自然晾干。
本实施例中,环氧底漆厚度为0.25mm,金属氟碳漆的厚度为0.25mm。
性能:拉开法附着力31.3MPa,耐化学介质性90d漆膜完好,耐盐雾性能3000h漆膜完好。
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,还可以作出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (7)
1.一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,包括如下步骤:
S1、将待涂装的合金钢管依次置于酒精和蒸馏水中超声波清洗30min,然后进行Ar离子轰击清洗,清洗完毕后,蒸馏水再冲洗一遍,晾干;
S2、将合金钢管预热至50~80℃后,在其表面制备一层厚80~100μm的NiCrAlY合金涂层,风冷至室温;
S3、在NiCrAlY合金涂层表面喷涂环氧底漆,晾干10min左右后,喷涂金属氟碳漆,自然晾干。
2.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,步骤S1中,超声波清洗的功率为15~30kHz,温度为25~40℃。
3.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,步骤S1中,在Ar气压力1~1.5Pa,气体离子源功率0.2~2.0kW和偏压300~800V的条件下,用Ar离子轰击清洗20~30min。
4.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,还包括基于视觉检测系统用于检测涂层、底漆、金属氟碳漆的外观状态的步骤,识别是否有漏喷、瑕疵现象。
5.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,NiCrAlY合金涂层采用Ni25CrAlY涂层。
6.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,采用超音速火焰喷涂技术在合金钢管表面制备NiCrAlY合金涂层。
7.如权利要求1所述的一种高强度抗拉型合金钢管的表面涂装工艺,其特征在于,环氧底漆厚度为0.05~0.5mm,金属氟碳漆的厚度为0.05~0.5mm。
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