涂装常见缺陷分析.ppt

涂装常见缺陷分析漆膜缺陷原因分类:漆膜硬度不够（weak):原因（cause)：起泡（blowing)：起泡的原因(cause)：起泡的原因：溶剂泡（SolventPopping）溶剂泡（SolventPopping）溶剂泡（SolventPopping）针孔（Pinholing）针孔（Pinholing）鱼眼/FishEyes(cissing)产生鱼眼的原因(cause)：预防(PREVENTION)鱼眼的产生与鱼眼相似的其它缺陷1.水泡(blister)与鱼眼相似的其它缺陷2.油污(oilpollution)起云/斑纹,(Clouding/Mottling)起云/斑纹,(Clouding/Mottling)应力纹(mapping):脏点/尘点/异色点(Dirt/threads/Bits)脏点/纤维/异色点（Dirt/threads/Bits）脏点/纤维/异色点（Dirt/threads/Bits）颗粒(particles)产生原因纤维或毛丝：当这类缺陷很多时，怎么办？？建议干喷/异常光泽低（Dryspray/lossofgloss)
起因(CAUSE)
Microscopicroughnessofthesurfacewhichmayresultfrom:
a)底漆太差或底漆未干就喷面漆.poorholdoutofprimer,ortheapplicationoftopcoatoverprimerwhichisnotthoroughlydry.
b)稀释剂太差或加了不合适的添加剂.poorqualityorincorrectthinner,ortheuseofadditivesinthepaint.
c)素材前处理不当或喷漆手法不对.incorrectlypreparedorpoorlyappliedpaint.
d) 素材质量太差applicationoverapoorsubstrate.
e)高湿低温时漆膜干燥太慢.excessivelyslowdryingduetohighhumidityorlowtemperature.
f) 溶剂蒸气在漆膜表面冷凝.solventfumesorexhaustgasesattackingthesurface.
g) 表面被污染.surfacecontaminationbywax,grease,oil,soaporwater.预防（PREVENTION）
a) 选择正确种类和比例的稀释剂Usethecorrectproportionofrecommendedthinner.
b) 正确的喷漆手法:枪距,扇形,气压……Usecorrectsprayingtechniques,ensurethatequipmentisclean,setairpressureaslowaspossible,consistentwithproperatomisation,sprayfromthecorrectdistance.
c) 使用合适的喷房,确保喷房有良好的空气流通.Useaspraybooth,andensurethataircirculationandextractionisatthecorrectvelocity.漆膜太薄InadequateColourCoverage预防（PREVENTION）
a)使用合适的喷涂方法确保合适的漆膜厚度.Usethecorrectsprayingtechnique,ensureevenandadequatefilmthickness.
b)使用合适的治具,合适的灯光照明;特别注意难喷涂表面.Workundergoodlightingconditionsinaproperlysizedspraybooth,payspecialattentiontoinaccessibleareas.
c)确保漆料混合均匀.Ensurethatthematerialsarethoroughlymixed.橘皮（OrangePeel）橘皮（OrangePeel）橘皮（OrangePeel）流挂（Runs/Sags）流挂（Runs/Sags）流挂（Runs/Sags）色差（Colordifferent）色差原因（Cause)腐蚀/生锈(corrosion/rusting)：腐蚀或生锈(cause)：胀气粉体涂料起白点(SPIT)此课件下载可自行编辑修改，供参考！
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