Ingabe izigxobo zasemgwaqweni zelanga kufanele zifakwe amakhaza abandayo noma zishise?

Namuhla, amakhoyili ensimbi e-premium Q235 ayizinto ezisetshenziswa kakhuluizigxobo zomgwaqo welanga. Ngenxa yokuthi izibani zasemgwaqweni zelanga zishaywa umoya, ilanga nemvula, ukuphila kwazo isikhathi eside kuncike ekutheni zikwazi ukumelana nokugqwala. Insimbi ivamise ukugaxwa ukuze kuthuthukiswe lokhu.

Kunezinhlobo ezimbili ze-zinc plating: idiphu eshisayo kanye ne-cold-dip galvanizing. Ngobahot-dip amapulangwe ensimbiziyakwazi ukumelana nokugqwala, sivame ukweluleka ukuzithenga. Yimuphi umehluko phakathi kwe-hot-dip ne-cold-dip galvanizing, futhi kungani izigxobo ezishisayo zediphu zinokumelana nokugqwala okuphakeme? Ake sibheke no-Tianxiang, imboni yezigxobo zasemgwaqweni yaseShayina edumile.

I-1) I-Cold Galvanizing (Okubizwa nangokuthi i-electro-galvanizing): Ngemva kokukhipha amafutha kanye nokukha, insimbi ifakwa kwisisombululo sikasawoti we-zinc. Isixazululo sixhunywe ku-electrode engalungile yemishini ye-electrolysis, futhi ipuleti le-zinc libekwe ngokuphambene, lixhunywe ku-electrode enhle. Lapho amandla evuliwe, njengoba lamanje lihamba liqonde kusuka kokuphozithivu kuya ku-electrode engalungile, ungqimba lwediphozithi ye-zinc iyunifomu, eminyene, futhi eboshelwe kahle ebusweni bepayipi lensimbi.

2) I-Hot-dip galvanizing: Indawo yensimbi icwiliswa ku-zinc encibilikisiwe kulandela ukuhlanzwa nokusebenza. Ungqimba lwe-zinc yensimbi lukhula endaweni yensimbi njengomphumela wokusabela kwe-physicochemical phakathi kwensimbi ne-zinc endaweni okusebenzelana kuyo. Uma kuqhathaniswa nokufaka ama-galvanizing abandayo, le ndlela ikhiqiza isibopho esiqinile phakathi kwe-coating kanye ne-substrate, ithuthukisa ukuminyana kokunamathela, ukuqina, ukusebenza okungenakulungiswa, kanye nokusebenza kahle kwezindleko.

1) Indlela Yokucubungula: Amagama abo awenza ucace umehluko. I-Zinc etholakala ekamelweni lokushisa isetshenziswa kumapayipi ensimbi afakwe emanzini abandayo, kanti i-zinc etholakala ku-450°C kuya ku-480°C isetshenziswa ekuvutheleni idiphu elishisayo.

2) Ukuqina Kokumboza: Nakuba ukucwebezela kwe-cold-dip kuvame ukukhiqiza ugqinsi oluyi-3–5 μm kuphela, okwenza ukucubungula kube lula kakhulu, kunokumelana nokugqwala okubi. Ngokuphambene, i-hot-dip galvanizing ngokuvamile ihlinzeka ngogqinsi oluyi-10μm noma ngaphezulu, okuphindwe izikhathi ezingamashumi ambalwa ukumelana nokugqwala kunezigxobo zokukhanya ezicwilisiwe ezibandayo.

3) Isakhiwo Sokumboza: I-coating ne-substrate ihlukaniswa ungqimba oluyinhlanganisela oluphukayo ngokuqhathaniswa ku-galvanizing yediphu eshisayo. Kodwa-ke, ngenxa yokuthi ukugqoka kwenziwa ngokuphelele nge-zinc, okuholela ekugqokeni okufanayo okunezimbotshana ezimbalwa, okwenza kungabi lula ukugqwala, lokhu akunawo umthelela omncane ekumelaneni kwayo nokugqwala. Ngokuphambene, i-cold-dip galvanizing isebenzisa ukugqoka okwenziwe ngama-athomu e-zinc kanye nenqubo yokunamathela ngokomzimba enezimbotshana eziningi, okwenza kube lula ukugqwala kwemvelo.

I-4) Umehluko Wamanani: Ukukhiqizwa kwe-hot-dip galvanizing kunzima futhi kuyinkimbinkimbi. Ngakho-ke, izinkampani ezincane ezinemishini emidala ngokuvamile zisebenzisa i-cold-dip galvanizing, okuholela ezindlekweni eziphansi kakhulu. Abakhiqizi abakhulu, abasungulwe kakhulu be-hot-dip galvanizing ngokuvamile banokulawula ikhwalithi engcono, okuholela ezindlekweni eziphezulu.

Abanye abantu bangathi noma bewazi umehluko phakathi kwe-cold-dip galvanizing ne-hot-dip galvanizing kodwa abakawuboni umehluko. Lezi izindlela zokucubungula ezingabonakali ngeso lenyama. Kuthiwani uma umthengisi ongathembekile esebenzisa isiphehlisi se-cold-dip esikhundleni sokufaka ama-galvanizing ediphu eshisayo? Empeleni, asikho isidingo sokukhathazeka. Cold-dip galvanizing kanyei-hot-dip galvanizingkulula kakhulu ukuhlukanisa.

Izindawo ezifakwe uthango ezibandayo zibushelelezi uma kuqhathaniswa, ikakhulukazi ngokuphuzi ngokuluhlaza, kodwa ezinye zingase zibe nombala okhazimulayo, oluhlaza okwesibhakabhaka-omhlophe, noma zibe mhlophe ngokukhazimula okuluhlaza okotshani. Angase abonakale efiphele noma engcolile. Izindawo ezifakwe uthayela ezishisayo ezishisayo, uma ziqhathaniswa, zithe ukuhluthuka, futhi zingase zibe nokuqhakaza kwe-zinc, kodwa zibukeka zikhanya kakhulu futhi ngokuvamile zimhlophe ngokusasiliva. Naka le mehluko.