Ukucwenga
Ukuqina kwe-coating kuyisimo sesiqinisekiso esibaluleke kakhulu sokumelana nokugqwala.Uma kukhulu ukujiya kokumboza, kuba ngcono ukumelana nokugqwala, okuye kwafakazelwa izivivinyo eziningi ezisheshisiwe kanye nokuhlolwa kokuchayeka emakhaleni.
Njengoba kuboniswe ngezansi:
Kumapuleti ensimbi anombala asekelwe (i-aluminium) yamapuleti e-zinc plated, ukujiya kokumboza kuthinta kakhulu ukusebenza kwenotshi kokugqwala kwamapuleti ensimbi anombala.Ukuncipha kwe-substrate, ungqimba lwezinc lushubile, futhi kuba ngcono ukumelana nokugqwala kokusikwa.Njengamanje kuqashelwa umhlaba wonke ukuthi isilinganiso se-zinc ≥ 100 siyisivikelo esisebenzayo ekonakalisweni kwe-notch yamapuleti ensimbi ahlanganiswe ngombala.
Isitifiketi.Uma sithatha i-substrate engu-0.5mm njengesibonelo, okuqukethwe kokucwenga ngemitha-skwele ngayinye ohlangothini olulodwa kufanele kufinyelele okungenani ku-50g.
Indlela yokukhetha uhlobo lokugqoka
Indima eyinhloko yokwemboza ibonakala kokubili imiphumela ebonakalayo kanye nemisebenzi yokuzivikela.Imibala ye-coating ingahlukaniswa ibe yimibala ephilayo kanye ne-inorganic pigments, enemibala egqamile nokucwebezela;Izingulube ze-Inorganic ngokuvamile zinemibala ekhanyayo, kodwa izakhiwo zazo zamakhemikhali nokumelana ne-UV kuphakeme kune-organic pigments.
Amajazi angaphezulu asetshenziswa kakhulu amapuleti ensimbi anombala ahlanganisa i-polyester (PE), i-silicon modified polyester (SMP), i-high durability polyester (HDP), ne-polyvinylidene fluoride (PVDF).Ijazi ngalinye langaphezulu lifanele izimo ezihlukene, futhi sincoma ukusebenzisa imikhiqizo ye-HDP noma ye-PVDF uma umnotho uvuma.
Ukuze kukhethwe i-primer, i-epoxy resin kufanele ikhethwe uma ukunamathela nokuphikiswa kokugqwala kugcizelelwa;Ukuze uthole ukunakwa okwengeziwe kokuvumelana nezimo kanye nokumelana ne-UV, khetha i-polyurethane primer.
Ukuze uthole i-back coating, uma ipuleti yensimbi ehlanganiswe ngombala isetshenziswa njengepuleti elilodwa, khetha isakhiwo esinezingqimba ezimbili, okungukuthi, ungqimba olulodwa lwe-primer yangemuva kanye nesendlalelo esisodwa sokuqeda emuva.Uma ipuleti lensimbi eliboshwe ngombala lisetshenziswa njengepuleti eliyinhlanganisela noma isangweji, ungqimba lwe-epoxy resin lusetshenziswa ngemuva.
Umthelela wokuqina kokunamathela empilweni yesevisi
Ukufakwa kwepuleti lensimbi enombala kungadlala indima ethile ekuvimbeleni ukugqwala, kusetshenziswa ifilimu yokuhlanganisa ukuze kuhlukaniswe izinto ezigqwala zangaphandle.Kodwa-ke, ngenxa yokubukeka kwe-microscopic yefilimu enamathelayo, kusekhona izimbotshana, futhi inani elincane lomhwamuko osemoyeni lisazohlasela i-coating, libangele amabhamuza kwesembozo futhi ngokunokwenzeka libangele ukuwa kwefilimu yokumboza.Okwe-steel plate, i-plating
Isendlalelo (i-zinc plated noma i-aluminium zinc plated) inomthelela omkhulu empilweni ye-steel plate.
Ngobukhulu obufanayo bokunamathela, i-secondary coating iminyene kuneyokuqala, enokumelana nokugqwala okungcono nempilo yesevisi ende.Ukuze uthole ukujiya koqweqwe lwawo, ngokusekelwe emiphumeleni yokuhlolwa kokugqwala efanele, sincoma ukuthi ukugqwala okungaphambili kube ngu-20 um noma ngaphezulu, njengoba ukujiya kwefilimu okwanele kungavimbela ukugqwala phakathi nesikhathi sokufaneleka.
Vimbela ukwenzeka kokugqwala (i-PVDF idinga ukujiya kokunamathela ngenxa yezidingo zempilo ende yesevisi, ngokuvamile engu-25 μ M noma ngaphezulu).
Isikhathi sokuthumela: Mar-31-2023