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1、涂裝常見缺陷分析G3MODULENAMEMODULENUMBER6/29/20212漆膜缺陷原因分類:涂料問題(Productproblems)應(yīng)用不良(Applicationproblems)設(shè)備因素(Equipmentproblems)環(huán)境因素(EnvironmentCause)顏色問題(Colourproblems)6/29/20213漆膜硬度不夠(weak):描述(DESCRIPTION)表現(xiàn)為漆膜軟,很容易被劃傷;相應(yīng)的耐溶劑性能表現(xiàn)差。6/29/20214原因(cause):通常是漆膜樹酯交鏈不夠好,而交鏈不夠的主要因
2、素有:1樹酯分子選擇不合適;2未完全干燥;3高溫漆或雙組份漆烘烤溫度不夠;4雙組份漆固化劑配比不對。6/29/20215起泡(blowing):6/29/20218溶劑泡(SolventPopping)描述(DESCRIPTION)新噴漆膜表面有直徑小于1MM的小氣泡。Opentoppedblistersupto1mmindiameteronthesurfaceofthemostrecentlyappliedpaintfilm.6/29/20219溶劑泡(SolventPopping)起因(CAUSE)Airorsolventva
3、pourtrappedbyfastdryingpaintformingaskin.Thismaybedueto:a)天那水太差或太快干。poorqualityortoofastthinner.b)噴得太厚或兩層漆之間干燥時間不夠。excessivefilmthickness,orinsufficientdryingtimebetweencoats.c)壓縮空氣壓力太低。compressedairpressuretoolow.d)加熱太快。dryingtemperaturetoohigh,heatsourcetooclosetoth
4、efilm,toohot,orappliedtoosoon.6/29/202110溶劑泡(SolventPopping)預(yù)防(PREVENTION)a)確保工件表面清潔Ensurethatthesurfaceisscrupulouslyclean.b)使用合適的天那水。Useonlyrecommendedthinner.c)每層漆膜厚度合適,并適當閃干Applypaintinthin,wetfilms.Allowsufficientdryingtimebetweencoats.d)使用正確的噴漆壓力Usecorrectcompre
5、ssedairpressure.e)烘烤前適當流平,避免加熱過快,熱源過近。Allowsufficientflashofftimebeforeforcedrying,ensurethatthecorrectdryingtemperatureisnotexceeded.Donotallowtheheatsourcetobeplacedtooclosetothesurface.6/29/202111針孔(Pinholing)描述(DESCRIPTION)小凹穴,通常直徑小于1MM。Smallcavities,generallyless
6、than1mmindiameter,6/29/202112針孔(Pinholing)預(yù)防(PREVENTION)a)一次不要噴得太厚。Donotspraytoothickonetime,b)烘烤之前適當流平。Flashingthefilmbeforebaking.c)使用涂料廠商推薦的附料。Useonlyrecommendedmaterials.d)正確調(diào)配油漆,使用較慢干稀釋劑。Mixthepaintcorrectly,useslowdrythinner.E)保持底材干凈。)Keepmaterialsclean.6/29/202
7、113魚眼/FishEyes(cissing)好可愛噢,真的象魚眼睛呢!6/29/202114產(chǎn)生魚眼的原因(cause):放大之后中間有核,通常是*素材被含硅silicon類的物質(zhì)污染。*素材未很好清潔。*裸手接觸工件。*油漆一次噴涂太濕。*油漆體質(zhì)敏感。6/29/202115預(yù)防(PREVENTION)魚眼的產(chǎn)生KeepthepartawayfromsiliconepollutionThoroughlycleanthesurfacewithwaxandgreaseremover.Donotallowcleaningsolven
8、tstodryonthesurfacebutremovewithacleandrycloth,Alwaysusetherecommendedmaterials.Ensurethatthesprayingareaisproperlyventilate