Izakhiwo zentsimbiZisetyenziswa kakhulu kwizakhiwo zanamhlanje, kwiibhulorho, nakwizityalo zoshishino ngenxa yokuba zinamandla aphezulu, azizinzisi kakhulu, kwaye zisebenza ixesha elifutshane. Xa kuthelekiswa nezakhiwo zekhonkrithi zemveli, izakhiwo zentsimbi zivumela ukwandiswa okukhulu, iindlela zokwakha eziguquguqukayo, kunye nokuhanjiswa kweprojekthi ngokukhawuleza. Ezi nzuzo zenza intsimbi ibe yinto efanelekileyo kwizakhiwo ezinkulu zikawonke-wonke, kwizibonelelo zothutho, nakwiindawo zokusebenzela zoshishino. Nangona kunjalo, intsimbi ikwachaphazeleka kakhulu kukugqwala kwe-electrochemical xa ivezwa kwindawo yendalo. Ukufuma, ioksijini, ityuwa, kunye nongcoliseko lwemizi-mveliso kunokubangela ngokukhawuleza ukusabela kokugqwala. Ukugqwala akuchaphazeli nje kuphela inkangeleko yesakhiwo kodwa kunciphisa necandelo elisebenzayo lamalungu entsimbi. Ekuhambeni kwexesha, le nkqubo isongela ngokuthe ngqo ukhuseleko lwesakhiwo kunye nokuqina kwexesha elide. Ngenxa yesi sizathu, ukususwa kwerhasi ngokwesayensi kunye nonyango lokulwa nokugqwala ngamanyathelo abalulekileyo kubunjineli besakhiwo sentsimbi.
Ukulungiswa komphezulu: Isiseko soKhuseleko lokuLwa nokuGqwala
Ukususwa komhlwa kumphezulu linyathelo lokuqala nelibaluleke kakhulu kuyo nayiphi na inkqubo yokukhusela umhlwa. Umgangatho wayo umisela ngokuthe ngqo ukunamathela kunye nobomi benkonzo yeengubo ezilandelayo. Ukuba umhlwa, isikali semill, okanye ioyile zihlala kumphezulu wentsimbi, kwanenkqubo yokugcoba engcono kakhulu iya kusilela ngaphambi kwexesha.
Kwimveliso yemizi-mveliso, ukuqhumisa okurhabaxa okanye ukuqhumisa ngokudubula yeyona ndlela isetyenziswa kakhulu yokususa umhlwa. Amasuntswana arhabaxa akhawulezayo achaphazela umphezulu wentsimbi kwaye asuse isikali se-oxide, umhlwa, kunye nezinto ezingcolisayo. Uninzi lweeprojekthi zifuna inqanaba lokucoceka komphezulu le-Sa 2.5. Kweli nqanaba, umphezulu wentsimbi ubonisa umbala wesinyithi ofanayo ongenamhlwa okanye isikali esibonakalayo, kwaye unomlinganiselo othile woburhabaxa. Le phrofayili irhabaxa iphucula kakhulu amandla okubopha oomatshini phakathi kwentsimbi kunye nokwaleka.
Ukucoca izixhobo ngesandla kunye nezixhobo zamandla kusetyenziswa kakhulu kwiindawo zokwakha okanye kwiindawo apho ukuqhumisa ngoomatshini kungenakwenzeka. Abasebenzi baxhomekeke kwiibhrashi zocingo, ii-angle grinders, okanye iidiski zokusantisa ukuze basuse umhlwa. Le ndlela isebenza kancinci kwaye ayisebenzi kakuhle. Ihlala ifikelela kumanqanaba okucoceka eSt 2 okanye St 3. Nangona le ndlela ingenakulingana nomgangatho wokuqhumisa, isadlala indima ebalulekileyo kumsebenzi wokulungisa kunye nokulungiswa kwendawo.
Iinkqubo zokugquma: Indlela yoKhuseleko oluPhambili
Ngexesha lokwenziwa nokugcinwa kwezinto zesakhiwo sentsimbi, kusetyenziswa iinkqubo zokugquma ezineengqimba ezininzi. Ezi nkqubo zandisa ubomi benkonzo ngokudibanisa iindlela zokukhusela ngokwasemzimbeni kunye neendlela zokukhusela iikhemikhali.
Inkqubo yokugquma eqhelekileyo ine-primer, i-intermediate coat, kunye ne-topcoat. I-primer inika umgca wokuqala wokuzikhusela ekugqwaleni kwaye iqinisekisa ukunamathela okuqinileyo kwi-substrate yentsimbi. Ii-primer ezityebileyo ze-epoxy zinc zisetyenziswa kakhulu kweli nqanaba. Umgubo we-zinc ngaphakathi kwe-coating usebenza njenge-anode yokuncama. Ngokusebenzisa i-electrochemical action, i-zinc iyagqwala ngokukhethekileyo kwaye ikhusela intsimbi engaphantsi kwi-rust.
I-intermediate coat ikakhulu yonyusa ubukhulu be-coating kwaye iphucula ukusebenza kwe-barrier. I-epoxy micaceous iron oxide penti lukhetho oluqhelekileyo. Ulwakhiwo lwayo lwe-pigment efana ne-plate luthintela ngokufanelekileyo ukungena komphunga wamanzi kunye ne-oxygen. Oku kuphucula uxinano lwe-coating kwaye kucothisa iinkqubo zokubola.
I-topcoat igxile ekumelaneni nemozulu kunye nenkangeleko. Izinto zentsimbi eziveziweyo zihlala zisebenzisa i-polyurethane okanye i-fluorocarbon topcoats. Ezi zinto zibonelela ngokumelana okuhle kakhulu nemisebe ye-ultraviolet. Zithintela ukutshixeka nokunyamalala ngelixa zibonelela ngombala wokugqibela woyilo. I-topcoat esemgangathweni ophezulu igcina ukhuseleko kunye nobuhle kangangeminyaka emininzi.
Abavelisi abanamava badla ngokufaka ii-coating ngononophelo olukhulu. Umzekelo, iHarbin Dongan Building Sheets Company isebenzisa ii-spray passes ezininzi ngexesha lokwenziwa kwezixhobo zentsimbi ukuqinisekisa ukuba ubukhulu befilimu eyomileyo bumalunga nee-microns ezingama-75. Le ndlela iphucula kakhulu ukumelana nokugqwala kwaye yandisa ubomi benkonzo.
Amanyathelo Akhethekileyo Okulwa Nokugqwala
Kwizakhiwo ezikwiindawo ezinzima kakhulu okanye kwiindawo ezinzima ukuzigcina zisemgangathweni, kufuneka iindlela zokukhusela eziphucukileyo.
Ukugalela i-hot-dip kubandakanya ukuntywilisela izinto zentsimbi ezicociweyo kwi-zinc enyibilikisiweyo malunga nama-450°C. Le nkqubo yenza umaleko we-zinc-iron alloy otyebileyo nomphezulu. Ukugalela i-hot-dip kunika ukhuseleko olugqwesileyo kwiindawo ezikunxweme, kwiindawo zokutshiza ityuwa, nakwiimeko ezihlala zifumile.
Intsimbi etshintshayo imela esinye isisombululo esisebenzayo. Ngokudibanisa izinto ezixutyiweyo ezifana nobhedu, i-chromium, kunye ne-nickel, intsimbi yenza umaleko womhlwa oxineneyo nozinzileyo kumphezulu wayo. Olu maleko luthintela ukubola okungakumbi kwaye lufezekisa isiphumo "sokukhusela umhlwa" ngaphandle kokongeza iingubo.
Ukuqukumbela, ukususa umhlwa ngempumelelo kunye nokukhusela umhlwa kubalulekile kukhuseleko, ukuqina, kunye nokubonakala kwezakhiwo zentsimbi. Ukulungiswa komphezulu ngokufanelekileyo, iinkqubo zokugquma eziyilwe kakuhle, kunye namanyathelo akhethekileyo afanelekileyo kunye kuqinisekisa ukuba izakhiwo zentsimbi zisebenza ngokuthembekileyo kulo lonke ixesha lenkonzo yazo.
Ixesha leposi: Jan-23-2026