Talateu
ʻI he ngaohiʻanga koloa fakaonopooni, Ko e tekinolosia ʻo e faitoʻo ʻo e funga ko ha meʻa mahuʻinga ia ki hono fakapapauʻi ʻo e tuʻunga lelei ʻo e, matuʻuaki corrosion, mo e moʻui ngaue. Ko e electrophoretic coating mo e efuefu coating ko ha ongo tekinolosia ia ʻoku fakaʻaongaʻi lahi, takitaha ʻoku ʻi ai hono ngaahi lelei mo hono fakaʻaongaʻi makehe. ʻE vakaiʻi fakaikiiki ʻe he fakamatala ko ʻeni ʻa e ngaahi faikehekehe ʻi he vahaʻa ʻo e electrophoresis mo e efuefu coating, kau ai ʻa e ngaahi tefitoʻi moʻoni ngaue, ngaahi founga ngaue, Ngaahi lelei mo e kovi, mo e ngaahi feituʻu ʻoku fakaʻaongaʻi, ke tokoni ke mahino lelei ange ki he kau laukonga ʻa e ngaahi ʻulungaanga mo e ngaahi tukunga feʻunga ʻo e ongo tekinolosia ko ʻeni.
1. Tekinolosia ʻo e Electrophoretic Coating
1.1 Tefitoʻi Moʻoni ʻo e Ngaue
Electrophoretic coating (Electrophoretic Deposition, EPD) ko ha tekinolosia coating ʻoku ne fakaʻaongaʻi ha malaʻe ʻuhila ke fakahu ʻa e ngaahi momoʻi meʻa ʻoku totongi ki he funga ʻo ha meʻa ngaue. Ko e tefitoʻi moʻoni tefitoʻi moʻoni ko ia ʻi he malumalu ʻo e ngaue ʻa ha malaʻe ʻuhila, Ngaahi momoʻi meʻa ʻoku fakaʻaongaʻ (ʻOku faʻa lahi ʻa e resin mo e pigments) ʻunu atu ki he electrode ʻoku ʻi ai ʻa e fehangahangai (meʻa ngaue) pea faʻu ha coating tatau ʻi he funga ʻo e workpiece. ʻOku faʻa vahevahe ʻa e electrophoretic coating ki ha faʻahinga ʻe ua: anodic electrophoresis mo e cathodic electrophoresis.
Anodic Electrophoresis: ʻOku hoko ʻa e meʻa ngaue ko e anode, pea ʻoku ʻikai lelei ʻa e ngaahi momoʻi meʻa ʻoku ʻi ai ʻa e coating, ʻunu atu ki he meʻa ngaue pea tipositi.
Cathodic Electrophoresis: ʻOku hoko ʻa e meʻa ngaue ko e cathode, pea ʻoku ʻi ai ʻa e ngaahi momoʻi meʻa ʻoku ʻi ai ʻa e coating, ʻunu atu ki he meʻa ngaue pea tipositi.
1.2 Tafe ʻo e Founga
ʻOku faʻa kau ʻi he founga ngaue ʻo e electrophoretic coating ʻa e ngaahi sitepu ko ʻeni:
- Kimuʻa ʻi he faitoʻo: ʻOku kau ai ʻa e degreasing, derusting, mo e phosphating ke fakapapauʻi ʻoku maʻa ʻa e funga ʻo e meʻa ngaue pea ʻoku pipiki lelei.
- Electrophoretic Coating: ʻOku fakauku ʻa e meʻa ngaue ʻi ha tangike electrophoretic, pea ko e ngaahi momoʻi meʻa ʻoku fakahu ʻi he funga ʻo e meʻa ngaue ʻi lalo ʻi he malaʻe ʻuhila.
- Fufulu: Toʻo ʻa e ngaahi momoʻi meʻa ʻoku ʻikai ke fakahu mei he funga ʻo e meʻa ngaue.
- Fakamoʻui: ʻOku fefeka ʻa e coating ʻaki hono fakamafanaʻi ke faʻu ha filimi ʻoku tolonga.
1.3 Ngaahi lelei
Faitaha: ʻE lava ke aʻusia ʻe he electrophoretic coating ʻa e matolu ʻo e coating tatau, naʻa mo e ngaahi meʻa ngaue ʻoku fihi hono fotunga.
Pikitai Malohi: Koeʻuhi ʻoku fakahu fakahangatonu ʻa e ngaahi momoʻi meʻa ʻo e coating ʻi he funga ʻo e meʻa ngaue ʻi lalo ʻi he malaʻe ʻuhila, ʻOku malohi ʻa e malohi ʻo e haʻi ʻi he vahaʻa ʻo e coating mo e substrate.
Anga Fakakaumeʻa ki he ʻAtakai: ʻOku fakaʻaongaʻi ʻe he electrophoretic coating ʻa e coatings lelei maʻolunga mo siʻisiʻi ʻa e maumau, pea ko e lahi taha ʻoku fakavaʻe ʻi he vai, ʻai ke anga fakakaumeʻa ki he ʻatakai.
ʻOtometiki maʻolunga: ʻOku faingofua ʻa e electrophoretic coating, ʻai ke feʻunga ia ki hono ngaohi ʻo e ngaahi meʻa lalahi.
1.4 Ngaahi kovi
Totongi maʻolunga ʻo e meʻangaue: ʻOku faingataʻa ʻa e meʻangaue electrophoretic coating pea ʻoku fie maʻu ki ai ha ʻuluaki ʻinivesi lahi.
Fakangatangata ʻa e matolu ʻo e coating: ʻOku faʻa manifi ʻa e matolu ʻo e coating ʻi he electrophoretic coating, ʻo faingataʻa ai ke maʻu ha coatings matolu ange.
Fakangatangata ʻa e ngaahi lanu ke fili mei ai: ʻOku siʻisiʻi ʻaupito ʻa e ngaahi lanu ʻoku fili mei ai ʻa e electrophoretic coating, ʻOku angamaheni ʻaki hono fakangatangata pe ki he lanu ʻe taha.
1.5 Ngaahi ʻElia ʻo e Fakaʻaongaʻi
ʻOku fakaʻaongaʻi lahi ʻa e coating electrophoretic ʻi he ngaahi ngaueʻanga hange ko e meʻalele, Ngaahi meʻangaue fakaʻapi, mo e hardware, tautautefito ki he ngaahi polokalama ʻoku fie maʻu ki ai ʻa e corrosion maʻolunga mo e coatings tatau, hange ko e sino ʻo e kaa, chassis, mo e ngaahi fale ʻo e ngaahi meʻangaue.