Izisombululo zeengxaki zokwaleka komgubo phezu kwediphu eshushu yokugalela igalvanizing

1. Ukunyangwa okungaphelelanga:

• Polyester umgubo wokugquma I-resins ye-thermosetting edibanisa i-cross-link kwifom yabo yokugqibela ye-organic ngokugcinwa kwiqondo lokushisa (ngokuqhelekileyo i-180 oC), malunga nemizuzu eyi-10. Ii-ovens zokunyanga zenzelwe ukubonelela ngeli xesha ngokudibanisa kweqondo lokushisa. Ngezinto ezishushu zediphu, kunye nobunzima becandelo elinzima, kuyimfuneko ukuqinisekisa ukuba ixesha elaneleyo lokumisa livunyelwe ukuhlangabezana nemigaqo yokuphilisa. Ukufudumala kwangaphambili komsebenzi onzima kuya kunceda ukukhawuleza inkqubo yokunyanga kwi-oven yokunyanga.

2.Ukuncamathela kakubi:

• Inqanaba lokugqibela kwinkqubo yokugaya idiphu eshushu ibandakanya ukucinywa kwamanzi omsebenzi, rhoqo kwisisombululo esibuthathaka se-sodium dichromate. Le nkqubo ipholisa umsebenzi ukwenzela ukuba ikwazi ukuphathwa kwaye idlulise umphezulu wengubo ye-galvanized ukukhusela i-oxidation yokuqala yomhlaba. Ubukho befilimu edlulayo kumphezulu we-galvanized coating buya kuphazamisa i-zinc phosphate okanye i-iron phosphate pretreatment, kwaye kwiimeko ezininzi, zenza ezi zonyango zingasebenzi. Kubalulekile ukuba izinto zediphu eshushu zingacinywa emva kokugalelwa. Oku kuqinisekisa ukuba i-zinc surface ikwimo esebenzayo kakhulu yokwamkela ukunyangwa kwangaphambili kusetyenziswe kwinkqubo yokugqoka umgubo.

3.Ukuqhobosha:

• I-Pinholing ibangelwa ukubunjwa kweebhubhu ezincinci zegesi kwi-polyester yokugqoka ngexesha lokutshiza / ukunyanga. La maqamza enza imingxuma emincinci kumphezulu kwaye ayibukeki.Esona sizathu siphambili sokuhombisa isikhonkwane sibonakala kukuba amasuntswana eresin epholiyesta adityanisiweyo adityaniswe nomphezulu wentsimbi ekhandisiweyo awaxubanisi ngaxeshanye njengalawo aphezu komgubo wepolyester. ifilimu, ngenxa yobunzima bentsimbi ye-galvanized, kunye nexesha elithathiweyo ukuba lifike kwiqondo lokushisa lokudibanisa.
• Ii-resin ezenziwe ngokukodwa kunye nee-agent 'ze-degassing' ziye zaphuhliswa ukunciphisa le ngxaki ngokulibazisa ukuqala kokuhlanganiswa komgubo. Ukufudumeza kwangaphambili umsebenzi kwi-oven eshushu ngaphambi kokusetyenziswa komgubo kuvumela amacandelo ediphu ashushu ashushu kakhulu ukuba agqunywe ngumgubo kwaye ajongane nengxaki ye-pin holing xa isetyenziswe kunye namabakala 'e-degassing' e-polyester powder coating.