1. Inqubo yokukhiqiza yepuleti yensimbi yombala
Ipuleti lensimbi elinombala (owaziwa nangokuthi ipuleti lombala, ipuleti lensimbi elakhiwe ngombala,ppgi pgl) isekelwe epuleti lensimbi eligoqeke ngokubanda, ipuleti lensimbi elinothayela noma ikhoyili yensimbi ye-galvalume, ngemva kokulungiswa kwendawo (ukususa amafutha, ukuhlanzwa, ukwelapha ngokuguqulwa kwamakhemikhali), kanye nokunamathela (indlela yokumboza ngamarola), umkhiqizo owenziwe ngokubhaka nokupholisa.
Isakhiwo sokumboza sihlanganisa amajazi amabili kanye nokubhaka okukodwa, amajazi amabili namabhaka amabili, njll. Impilo yesevisi yamahhala yesondlo ingaba iminyaka engu-10-30 kuye ngesimo esizungezile.
Inqubo yokukhiqiza eyinhloko yohlobo olujwayelekile lokuhlanganisa okubili kanye nokubhaka okubili okuqhubekayo kweyunithi yokuhlanganisa umbala yilena: umshini wokuthunga-------------------------------------- -I-Uncoiling Looper-----I-Alkaline Degreasing----Cleaning----Drying-----Passivation-----Drying------Ukuqala Kokuhlanganisa ------- ukunamathela kokuqala kanye drying------ topcoat fine coating------ topcoat drying------ ukupholisa komoya nokupholisa------ umsebenzi wokusonga Isethi ----- isibuyisela emuva----- (i umqulu olandelayo uyapakishwa bese ufakwa endaweni yokugcina).
Ama-substrates avamile ekhoyili yensimbi enombala(ppgi ppgl coil)
(1) I-substrate egoqiwe ebandayo
Ipuleti lombala elikhiqizwe ku-substrate egoqelwe ngokubanda linokubonakala okubushelelezi futhi okuhle futhi linokucubungula kwepuleti eligoqiwe elibandayo;kodwa-ke, noma yikuphi ukuklwebheka okuncane ku-surface coating kuzodalula i-substrate egoqelwe ngamakhaza emoyeni, ezodalula ngokushesha insimbi ku-Ikhiqiza ukugqwala okubomvu.Ngakho-ke, imikhiqizo enjalo ingasetshenziswa kuphela ezilinganisweni zesikhashana zokuzihlukanisa kanye nezinto zangaphakathi ezinezidingo eziphansi.
(2) Idiphu elishisayo le-galvanized substrate
Umkhiqizo otholwe ngokugqoka i-organic coating on thei-hot-dip galvanized coilyishidi elifakwe ngombala elinothayela oshisayo.Ngaphezu komphumela wokuvikela we-zinc, i-organic coating ebusweni beshidi elifakwe ngombala oshisayo-dip lidlala indima yokuvikela nokuvikela, ukuvimbela ukugqwala, futhi impilo yesevisi yinde kunaleyo yediphu eshisayo. ishidi likathayela.Okuqukethwe kwe-zinc ye-hot-dip galvanized substrate ngokuvamile ingu-180g/m2 (izinhlangothi ezikabili), kanti izinga eliphezulu lokuqukethwe kwe-zinc kwe-hot-dip galvanized substrate yokwakha ngaphandle ngu-275g/m2.
(3) I-Hot-dip Al-Zn substrate
Ngesicelo, hIkhoyili ye-ot-dip galvalumeingasetshenziswa futhi njengama-substrates ahlanganiswe ngombala (55% AI-Zn kanye no-5% AI-Zn).
(4) I-electro-galvanized substrate
Ishidi elenziwe nge-electro-galvanized lisetshenziswa njenge-substrate, futhi umkhiqizo otholwe ngokumboza upende we-organic kanye nokubhaka uyishidi elihlanganiswe ngombala we-electro-galvanized.Ngenxa yokuthi ungqimba lwezinc lweshidi elenziwe nge-electro-galvanized lincane, okuqukethwe kwe-zinc kuvame ukuba ngu-20/20g/m2, ngakho lo mkhiqizo awufanele ukusetshenziswa.Yenza izindonga, uphahla, njll ngaphandle.Kodwa ngenxa yokubukeka kwayo okuhle nokusebenza okuhle kakhulu kokucubungula, ingasetshenziswa ikakhulukazi ezintweni zasendlini, umsindo, ifenisha yensimbi, umhlobiso wangaphakathi, njll.
Ingaphezulu limbozwe izendlalelo ezimbili zikapende kanye nongqimba olunamekwe ngombala ngemuva (lolu hlobo lukapende wangemuva ngokuvamile alufanele ukusetshenziswa ngaphambili)
Ikhoyili yensimbi epeyintwe ngaphambilini (ppgi ppgl) iwumkhiqizo owenziwe ngeshidi lensimbi eligoqeke ngokubanda, ishidi lensimbi elidiphu elishisayo elishisayo noma amashidi ensimbi ye-galvalume ngemva kokukhishwa kwamafutha, i-phosphating kanye nokwelashwa kwe-chromate, bese embozwa ngopende wemvelo wabhakwa.Izingubo ezivame ukusetshenziselwa amapuleti ensimbi anombala yi-polyester (i-BHP XRW coating system, i-Baosteel JZ, i-Korea PGS, i-Taiwan PE), ilandelwa yi-silicone resin (PSS), i-fluorine resin (PVDF), njll. Isakhiwo sokumboza sihlukaniswe kabili. Ukujiya kokumboza kuvame ukuba ngu-20-25μ ngaphezulu futhi 8-10μ ngemuva.Izindinganiso ezivame ukucashunwa zamashidi ensimbi anamathelwe ngemibala yi-American ASTM A527 (galvanized), ASTM AT92 (aluminium-zinc), Japanese JIS G3302, European EN/0142, Korea KS D3506, Baosteel Q/BQB420
Isikhathi sokuthumela: Jun-22-2022