涂装常见问题分析

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1、MODULENAMEMODULENUMBER涂装常见缺陷分析涂装常见缺陷分析G3漆膜缺陷原因分类:�涂料问题涂料问题((Productproblems)�应用不良应用不良(Applicationproblems)�设备因素设备因素((Equipmentproblems)�环境因素((EnvironmentCause)�颜色问题颜色问题(Colourproblems)9/3/2010Prepareedby:LiuChenzhong2漆膜硬度不够（weak)weak)::描述(DESCRIPTION)表现为漆膜软,很容易被划伤；相应的耐溶剂性能表现差。9/3/2010Prepareedby:L

2、iuChenzhong3原因（cause)cause)：通常是漆膜树酯交链不够好，而交链不够的主要因素有：１树酯分子选择不合适；２未完全干燥；３高温漆或双组份漆烘烤温度不够；４双组份漆固化剂配比不对。9/3/2010Prepareedby:LiuChenzhong4起泡（blowing)blowing)：9/3/2010Prepareedby:LiuChenzhong5起泡的原因((cause)cause)：通常是基底有锈迹(擴大）、污垢、小凹孔、磷化渣质、水汽等被封在漆膜底下，漆膜在烤干或受热（受熱膨脹）时，这些物质彭涨将漆膜顶起造成。9/3/2010Prepareedby:LiuChe

3、nzhong6起泡的原因：底下有Money!9/3/2010Prepareedby:LiuChenzhong7溶剂泡（SolventPoppingSolventPopping）描述（DESCRIPTION）新喷漆膜表面有直径小于1MM的小气泡。Opentoppedblistersupto1mmindiameteronthesurfaceofthemostrecentlyappliedpaint9/3/2010film.Prepareedby:LiuChenzhong8溶剂泡（SolventPoppingSolventPopping）起因（CAUSE）Airorsolventvapourtr

4、appedbyfastdryingpaintformingaskin.Thismaybedueto:a)天那水太差或太快干。poorqualityortoofastthinner.b)喷得太厚或两层漆之间干燥时间不够。excessivefilmthickness,orinsufficientdryingtimebetweencoats.c)压缩空气压力太低。compressedairpressuretoolow.d)加热太快。dryingtemperaturetoohigh,heatsourcetooclosetothefilm,toohot,orappliedtoosoon.9/3/20

5、10Prepareedby:LiuChenzhong9溶剂泡（SolventPoppingSolventPopping）�预防（PREVENTION）�a)确保工件表面清洁Ensurethatthesurfaceisscrupulouslyclean.�b)使用合适的天那水。Useonlyrecommendedthinner.�c)每层漆膜厚度合适，并适当闪干Applypaintinthin,wetfilms.Allowsufficientdryingtimebetweencoats.�d)使用正确的喷漆压力Usecorrectcompressedairpressure.�e)烘烤前适当流

6、平，避免加热过快，热源过近。Allowsufficientflashofftimebeforeforcedrying,ensurethatthecorrectdryingtemperatureisnotexceeded.Donotallowtheheatsourcetobeplacedtooclosetothesurface.9/3/2010Prepareedby:LiuChenzhong10针孔（PinholingPinholing）描述（DESCRIPTION）小凹穴，通常直径小于1MM。Smallcavities,generallylessthan1mmindiameter,9/3/

7、2010Prepareedby:LiuChenzhong11针孔（PinholingPinholing）预防（PREVENTION）a)一次不要喷得太厚。Donotspraytoothickonetime,b)烘烤之前适当流平。Flashingthefilmbeforebaking.c)使用涂料厂商推荐的附料。Useonlyrecommendedmaterials.d)正确调配油漆，使用较慢干稀释剂。Mixthepain