Paintline defects.pptVIP

Paint Application Common Defects/Trouble Shooting 涂料的应用 常见缺陷/解决对策 Build up 积漆 Appearance:外观表现 Running of the paint film in rivulets 漆膜在形成过程中形成的。 Cause: 原因 Improper thinners: too slow evaporating不适当的稀释剂:蒸发太慢 Excessive film thickness 漆膜过厚 Paint temperature too high涂料温度过高 Gun position out of place 喷枪位置偏离 Build up积漆 Prevention预防 Use recommended thinner as specified 使用指定推荐的稀释剂 Adjust air pressure 调节空气压力 Use specified film thickness 使用指定的漆膜厚度 Maintain constant paint temperature 保持固定的涂料温度 Adjust gun position 调整喷枪的位置 Orange Peel 橘皮 Appearance:外观表现 Resembles the skin of an orange像橘子皮一样 Causes:原因 Insufficient thinner added to the paint 稀释剂添加不足 Improper thinning solvent: too fast evaporating 不适当的溶剂：蒸发过快 Low film thickness 膜厚太薄 Improper air pressure 不适当的空气压力 Paint temperature too low 油漆温度过低 Orange Peel 橘皮 Prevention:预防 Lower viscosity of paint 降低涂料的黏度 Reduce with slower evaporating solvents减少蒸发过慢的溶剂 Proper air and application equipment adjustments适当的空气和应用设备的调整 Maintain constant paint temperature 保持固定的涂料温度 Use specified film thickness使用指定的漆膜厚度 Crater 火山口 (Fisheyes鱼眼, Pinholing针孔) Appearance:外观表现 Small crater-like depressions in the film 漆膜上像火山口一样的小坑 Causes:原因 Improper cleaning of substrate底材清洗不当 Oil, water or other contaminant in spray lines喷涂线上有油、水或其他污染物 Silicone or other contaminant in working area atmosphere在工作区域空气中有硅酮或其他污染物 Low film thickness降低漆膜厚度 Crater火山口 Prevention:预防 Surface to be painted must be thoroughly clean and dry待喷涂的表面必须彻底清洗和干燥 Use specified film thickness使用指定的漆膜厚度 Use proper maintenance to prevent contaminants from entering spray lines. 使用适当的维护,防止污染物进入喷涂线。 Eliminate contaminants from entering application areas. 消除应用范围的污染物 Blistering气泡 (Solvent Popping溶剂起泡, Pinholes针孔) Appearance: 外观表现 Broken edged craters if the blisters have burst 气泡破裂就会成为火山口 Causes:原因 Excessive film build: trapped solvents漆膜过厚:溶剂不能完全 Insufficient flash-off time before baking烘烤前流平时间不足 Excessive temperature in f