涂料知識講座(已修改)
2025-02-17 22:36 本頁面
【正文】 Painting Overview ? 環(huán)境管制納入涂裝要求 ? 關(guān)鍵性管制 ? 設(shè)備 ? 過程 ? 操作 /系統(tǒng)安全性 涂料儲藏 ? 涂料儲藏溫度控制溫度 1035度 ? 先進先出 ? 安全性 Premix ? 環(huán)境 ? Need keep the overall environment clean, routine practices should be followed to maintain a dust free environment. ? T/H control to correlate with paint supply booth and spray house’s settingSpec from PPG so as the viscosity can be properly controlled. ? Well ventilated working and booth 好 ? Operator Health作業(yè)員健康 Premix ? Equipment設(shè)備 ? Agitator, the better with disturb function. .調(diào)漆員 ﹐ 攪拌運作 ?? ? Stop Watch碼表 ? Weight Scale天平 ? Viscosity Cup粘度杯 ? Shaker攪拌器 ? Filter, the better no recycle using過濾器最好不要重復(fù)使用 ? Mask, smock,gloves, safety glass ﹐ 工作服 ﹐ 手套﹐ 防護眼睛等。 Premix ? 制程 ? By paint setup SOP/SIP/Record document system setup. ? All tools/container need clean before use. ? Blending paint, hardener and reducer according to PDS ? 黏度量測前涂料要攪拌勻 . ? 量測涂料黏度時核對溫度 ? 記錄黏度 ﹐ 涂料溫度及攪拌時間 Critical Application Controls ?黏度 ?溫度 ?涂料運輸 ?噴涂 ?攪拌混合溶劑 Technical Service Support Basic System Controls基本系統(tǒng)管制 ? Booth Temperature (2030C)溫度 (2030C) ? Booth Humidity (5060%)儲藏室濕度 (5060%) ? Room Humidity (4565%)室溫濕度 (4565%) ? Conveyor Speed ? Fluid Flow and Air Pressures ? Viscosity and Temperature ? Film Builds噴涂 ?? ? Oven Temperatures烤箱溫度 Note: In most cases the environment is not controlled. Agitation ? Critical in maintaining consistent coating pigment dispersion and viscosity. ? If proper coating agitation is not achieved: ? Cure or gloss variations can occur as a result of improper catalyst mixing ? Potential pigment settling resulting in gloss variations ? Inaccurate viscosity readings Two Component Mixing ? Critical in achieving proper coating color, cure, and uniform gloss ? Automated mixing equipment requires routine calibration checks, by volume or weight ? If ponents are not blended accurately: ? Off color appearance色差 ? Inconsistent gloss appearance光澤不一致 ? Inconsistent film curing, not pletely dry薄膜不一致 ﹐噴太濕 ? Lack of film hardness膜硬度不足 ? Loss of performance properties Premix Note ? Viscosity to be measured after pleting agitation. Remendations on PPG process control chart. ? Filtering, mesh size to be remended by TSSR of PPG. ? Once being mixed, document time mixed for considering the pot life and paint consumption. Again, provided on PDS and Process Control sheets provided by ﹐ 文件條款規(guī)定保質(zhì)期以考慮儲藏罐壽命及涂料使用量。再者 ﹐ 在 PDS之上并由 PPG提供程序管制圖。 Viscosity ? The degree of thickness of a ? The measure of a liquid’s resistance to ﹐ 對液體阻力的測量 ? Viscosity affects: ? Paint Fluidity涂料流動性 ? Atomization霧化 ? Pigment Dispersion色差 Problems with Viscosity Viscosity too Low: 粘度太低 ? Runs and Sags 流漆 下陷 ? Solvent Popping 熔解太快 ? Mottling – metallic雜色 顆粒的 ? Excessive Fog Overspray過多的塵霧和不粘噴涂物 ? Hiding Power
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