CN109596537A - 一种涂装检验流程 - Google Patents
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Abstract
一种涂装检验流程结构简单,本发明通过设置不同的单元,规范了涂装检验流程和要求,满足了企业的高质量发展需求,对于提升涂装检验的合格率有很大的效果。
Description
技术领域
本发明涉及涂装检验领域,具体为一种涂装检验流程。
背景技术
在整个涂装过程中,质量控制和检查工作贯穿于整个阶段,但是目前工厂涂装检验没有规范性的措施,确保工厂涂装的达到标准。
发明内容
本发明所解决的技术问题在于提供一种涂装检验流程,以解决上述背景技术中提出的问题。
本发明所解决的技术问题采用以下技术方案来实现:一种涂装检验流程,包括:色差测量单元、附着力测试单元、模厚测量单元、硬度测试单元、耐冲击测试单元、耐酒精测试单元、盐雾测试单元、对色箱测试单元;所述色差测量单元通过色差仪进行色差检测;通过色差检测进入附着力测试单元,通过百割刀、3M胶带进行测试;所述膜厚测量单元通过测厚仪进行侧厚;所述硬度测试通过定都测试仪和铅笔进行测试;通过硬度测试后进行耐冲击测试,所述耐冲击测试通过冲击强度测定仪进行测定;所述耐酒精测试通过耐磨擦拭验机进行测试;所述经过耐久测试通过后进行盐雾测试,所述延误测试通过盐雾试验机测试;最终通过对色箱对颜色进行判定。
与现有技术相比,本发明的有益效果是:本发明通过设置不同的单元,规范了涂装检验流程和要求,满足了企业的高质量发展需求,对于提升涂装检验的合格率有很大的效果。
附图说明
图1为本发明的结构示意图。
色差测量单元1、附着力测试单元2、模厚测量单元3、硬度测试单元4、耐冲击测试单元5、耐酒精测试单元6、盐雾测试单元7、对色箱测试单元8。
具体实施方式
为了使本发明的实现技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体图示,进一步阐述本发明。
一种涂装检验流程,包括:色差测量单元、附着力测试单元、模厚测量单元、硬度测试单元、耐冲击测试单元、耐酒精测试单元、盐雾测试单元、对色箱测试单元;所述色差测量单元通过色差仪进行色差检测;通过色差检测进入附着力测试单元,通过百割刀、3M胶带进行测试;所述膜厚测量单元通过测厚仪进行侧厚;所述硬度测试通过定都测试仪和铅笔进行测试;通过硬度测试后进行耐冲击测试,所述耐冲击测试通过冲击强度测定仪进行测定;所述耐酒精测试通过耐磨擦拭验机进行测试;所述经过耐久测试通过后进行盐雾测试,所述延误测试通过盐雾试验机测试;最终通过对色箱对颜色进行判定。
另一方面,本发明提供更详细的测量要求:
色差测量
仪器:色差仪,广泛用于塑胶及印刷等行业,主要根据CIE色空间的Lab,Lch原理,测量显示出样品与被测样品的色差△E以及△Lab值。
照明:自然光线下,或300~400LX光线下,眼睛以45度角度观察涂膜表面。
测量方法:目视被测工件涂层表面,颜色与标准样板比较,基本无差异则判为合格,具有明显色差,则判为不合格,当颜色存在差异,却难以判定合格与否时,用色差仪进行测定,根据比值进行判定。
色差指标:以下数据位一般涂装业内所采用之标准,实际数据需请客户提供或与客户讨论。
Delta E(△E) ≤0.8或1.0为合格 △E=√(△a²+△b²+△L²)
△a=a1-a2 △b=b1-b2 △L=L1-L2
(SONY标准:△E≤1.2 △L=±1.0 △a、△b=±0.3)
附着力测试
仪器:百割刀、3M胶带【粘附力在2.9N/10MM(300GF/10MM)以上的胶带】。
方法:用百割刀在测试样本表面划10*10个(共:100个)1mm*1mm小网格,每一条划线应深及涂层的底层;用毛刷将测试区域的碎片刷干净;用3M 600号胶纸或等同效力的胶纸牢牢黏住被测试小网格,并用橡皮擦用力擦拭胶带,以加大胶带与被测区的接触面积及力度;用手抓住胶带一端,在垂直方向(90°)迅速扯下胶纸,同一位置进行2次相同试验。
判定标准:一般要求附着力≥1级或≥2级时为合格,而防腐涂料要求通常需≥1级,才算合格。实际数据需请客户提供或与客户讨论。
0级-划线边缘光滑,在划线的边缘及交叉点处均无涂层脱落;
1级-在划线的交叉点处有小片的涂层脱落,且脱落总面积小于5%
2级-在划线的边缘及交叉点处有小片的涂层脱落,且脱落总面积在5%~15%之间
3级-在划线的边缘及交叉点处有成片的涂层脱落,且脱落总面积在15%~35%之间
4级-在划线的边缘及交叉点处有成片的涂层脱落,且脱落总面积在35%~65%之间
5级-在划线的边缘及交叉点处有成片的涂层脱落,且脱落总面积大于65%
膜厚测量
仪器:测厚仪
种类:1)磁性测厚方法:可无损的测量磁性金属基体(如钢、铁、合金和硬磁性钢等)上非磁性覆盖层的厚度(如铝、铬、铜、橡胶、油漆等)。
2)涡流测厚方法:可无损的测量非磁性金属基体(如铜、铝、锌、锡等)上非导电覆盖层的厚度(如橡胶、油漆、塑料等)。
3.方法:在工件的主要表面上,距边缘至少25mm以上取5个不同的点,测量其厚度,然后取平均值作为该涂层的厚度值。
4.判定标准:
一般:A级面之任一点膜厚小于40µm或稍微露青(底),均为不合格。平均值以60-100µm为合格,同一批产品膜厚以±10µm为标准。以上数据为一般涂装业内所采用值标准。
OWA:涂层最低不可少于60µm,最高不超过79.5µm。根据EN最厚80µm,如果超过80µm就必须要做另一套完成的测试程序。
硬度测试
仪器:硬度测试仪、铅笔。
方法:用不同硬度的铅笔,与漆膜表面成一定角度(45度),用一定的力(1KG)在漆膜表面上划过,然后用粘有酒精的棉纱布擦拭划痕处。
判定标准:先以软(B)→硬(H),逐一做测试,当划痕不可被酒精擦去时,则涂膜的硬度即以铅笔之最硬型号标识。一般判定之数据以≥2H,允许有轻微痕迹为合格。实际数据需客户提供或相互讨论。
耐冲击测试
仪器:冲击强度测定仪。
方法:将预先准备好的被测工件涂膜朝上放好。然后按产品标准的耐冲击指标测定,如果产品标准规定的耐冲击指标是1KG.50CM,即以1KG重锤提起至50cm高,按重锤自由落在涂膜上。注:样板冲压部位距边缘不得少于15mm,每个冲击点的边缘间以15~18mm为宜,观察冲击后涂膜的状态。
判定标准:一般测试标准,以施加550g砝码力、位移50cm对试验片进行冲击。以涂层无剥落、龟裂等现象为合格。实际标准需请客户提供或沟通讨论。通常粉末供应商提供粉末时,均会提供已测试之样板,我方仅需提供标准。
耐酒精测试
仪器:耐磨擦拭验机、95~99.5%酒精、棉布(厚1.5mm,30cm*30cm,含棉约60%以上)。
方法:将粘有浓度酒精的棉球施加1000g砝力,依指定次数来回擦拭,往返1次/2秒。
判定标准:被测工件涂装面无退色、起泡、掉漆等不良现象。一般测试,以施加1000g砝码力,擦拭30次为标准(华硕电脑标准)。砝码重量与擦拭次数,需请客户提供或沟通。
盐雾测试
仪器:盐雾试验机、5%的氯化钠盐水溶液
方法:1)溶液PH值调在中性6~7作为喷雾用的溶液。
2)试验相对湿度≥95%,温度均取35℃±1℃。
3)盐雾升降率在1~2ml/80cm².h之间,需24小时连续喷雾。
4)试样应被支撑或悬挂起来,偏离纵向的角度再15度~30度之间,最好使被测试的大部分表面与通过盐雾室的盐雾主流向平行。
3.判定标准:涂层无腐蚀、氧化或脱落等现象为合格,测试时间需请客户提供或与之讨论。
4.备注:如在天然暴露环境下对某产品样品进行试验,待其腐蚀可能要1年,而在人工类比盐雾环境条件下试验,只要24小时,即可得到相似的结果。此测试方法一般用于户外或特殊环境之产品,除特殊要求外,一般室内用产品无需做此测试。
对色箱
在日常生活中,我们可以感受到,当在不同光源或环境下观看同一样物件时,呈现在我们眼中的物件颜色或多或少会有偏差,这是因为不同光源拥有不同辐射能量,在照射到物体上时,会呈现不同之颜色。
当这个经验引申到涂装上的颜色管理时,类似的情况也会发生。例如:当品检员虽然细心对比货品之间的颜色,但货品送到客户时也会收到客户对货品颜色差异的投诉,严重者可能导致退货或遭到客户索赔,对公司的商誉自然受到损坏。
要解决这些问题,最简单的方法就是检定颜色时,必须在相同的光源及可控制的条件下进行,例如常用之人工日光灯CIED65(即6500K色温),否则一切评定是没有意义及不可信赖。要达到这类标准,最直接及有效的方法,莫过于使用现时最常用之对色灯箱。
检验方法:
将所有可能照射在检验品上的外来光线必须尽量避免,如窗户在视野范围内,应装上灰色窗帘遮蔽,所以如果能在黑房内使用对色灯箱是最为理想的。
测试时灯箱内绝不可放置其他杂物。
打开欲测试的的光源灯管,将样板与被测物一同放入对色箱中。
检验标准:
测试员需对颜色有相当灵敏度。
测试员以眼睛直接观察被测工件与样板颜色有无差异。
目测颜色无差异,为合格。
与现有技术相比,本发明的有益效果是:本发明通过设置不同的单元,规范了涂装检验流程和要求,满足了企业的高质量发展需求,对于提升涂装检验的合格率有很大的效果。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明的要求保护范围由所附的权利要求书及其等效物界定。
Claims (1)
1.一种涂装检验流程,其特征在于:包括:色差测量单元、附着力测试单元、模厚测量单元、硬度测试单元、耐冲击测试单元、耐酒精测试单元、盐雾测试单元、对色箱测试单元;所述色差测量单元通过色差仪进行色差检测;通过色差检测进入附着力测试单元,通过百割刀、3M胶带进行测试;所述膜厚测量单元通过测厚仪进行侧厚;所述硬度测试通过定都测试仪和铅笔进行测试;通过硬度测试后进行耐冲击测试,所述耐冲击测试通过冲击强度测定仪进行测定;所述耐酒精测试通过耐磨擦拭验机进行测试;所述经过耐久测试通过后进行盐雾测试,所述延误测试通过盐雾试验机测试;最终通过对色箱对颜色进行判定。
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