Ukuqalisa
Amakhoyili ensimbi enziwe nge-galvanized adlala indima ebaluleke kakhulu kwizimboni eziningi, esebenza njengomgogodla wokwakha, ukukhiqiza izimoto, nezinye izinhlelo ezahlukahlukene zezimoto. Ukuphila isikhathi eside kwalezi zinhlaka kuyinto ebucayi yamafektri, abalingani beziteshi, nabasabalalisi abancika ekunciphiseni nasekusebenzeni kwabo. Ukuqonda izici ezithinta isikhathi sokuphila kwe I-Calvanized Steel Coil ibalulekile ekwandiseni ukusebenza kahle kanye nokuqinisekisa ukuthembeka komkhiqizo. Le ndatshana ingena kwizinto eziyiminyaka eziningi ithonya ukukhuthazela kwamakhoyili ensimbi ye-galvanized, ukuhlinzeka ngokuhlaziywa okuphelele kwababambiqhaza embonini.
Ukuqonda amakhoyili ensimbi enziwe nge-galvanized
Ukuze bazise izici ezithinta isikhathi eside kwamakhoyili ensimbi egayiwe, kubalulekile kuqala ukuqonda ukuthi bayini nokuthi bakhiqizwa kanjani. Amakhoyili ensimbi enziwe nge-galvanized amashidi ensimbi ahlanganiswe ngesendlalelo se-zinc ukuvikela ekubhuleni. Inqubo ye-Galvanization ifaka ukugxilisa insimbi e-zilten zinc, yakha isibopho se-metallurgical phakathi kwensimbi ne-zinc under. Lokhu kuhlanganiswa kwe-zinc kusebenza njenge-anode yomhlatshelo, kuvimbela insimbi ekujuleni lapho kuvezwa imvelo.
Ikhwalithi yenqubo ye-galvanization, kufaka phakathi uhlobo nobukhulu be-zinc coating, ithonya kakhulu ukumelana kwekhoyili kokugqwala futhi, ngenxa yalokho, impilo yaso. Izindlela ezahlukahlukene ze-Galvanization, njengokushisa okushisayo kwe-galvaning kanye ne-electro-galvaning, kubangele amazinga ahlukahlukene okuvikelwa. I-hot-cpup galvaning ngokuvamile ihlinzeka ngongqikithi omkhulu we-zinc, enikeza isivikelo esiphakeme ngokuqhathaniswa ne-electro-galvanizing.
Izici zezemvelo ezithinta isikhathi eside
Izindawo ezihlanzekile
Enye yezinto ezibaluleke kakhulu ezithinta isikhathi eside samakhoyili ensimbi ye-galvanized yimvelo asetshenziswa kuwo. Ezindaweni ezisolaka kakhulu, njengezifunda ezisogwini ezinomoya onosaso noma izindawo zezimboni ezinamazinga aphezulu okungcola, isilinganiso sokugqwala singasheshisa, sinciphise i-zinc under ngokushesha okukhulu. I-Chloride ions ekhona emazweni asemanzini angangena e-zinc coating, okuholela ekugcekeni okukhohlisayo kanye nokugcina kwensimbi engaphansi.
Ucwaningo olunzulu olwenziwe yi-International Zinc Association luveze ukuthi izinga lokukhulisa le-zinc endaweni yasemakhaya lilinganiselwa ku-0,1 microns ngonyaka, kanti elisendaweni yasolwandle, izinga lingakhuphuka kumagciwane ama-2 ngonyaka. Lokhu kungcola kugcizelela isidingo sezinyathelo ezengeziwe zokuvikela noma ukumboza okuqinile okuphezulu ezindaweni ezihamba phambili ukunweba isikhathi sokuphila kwekhoyili.
Umswakama kanye nomswakama
Umswakama kanye nomswakama kuyizinto ezibalulekile ezithonya inqubo yokugqwala. Ezindaweni ezinamazinga aphezulu womswakama, ukuba khona komswakama kusiza ukusabela kwe-electrochemical phakathi kwe-zinc nomoya-mpilo, okuholela ekwakhekeni kwe-zinc onide ne-zinc hydroxide. Lezi zinhlanganisela zingaqhubeka nokuphendula nge-carbon dioxide ukwakha i-zinc carbonate, enikeza izinga elithile lokuvikelwa ngokwakha ungqimba olungenangqondo. Kodwa-ke, ukuvezwa okuqhubekayo komswakama kungaqeda ungqimba lwe-zinc ngokuhamba kwesikhathi.
Idatha evela e-American Galvanizers Association ikhombisa ukuthi endaweni eshisayo enomswakama ophezulu, isikhathi sokuphila se-galvanized coatis ingancishiswa kuze kube ngu-30% uma iqhathaniswa nezimo zezulu ezomile. Ngakho-ke, ukulawula umswakama wezemvelo noma ukusebenzisa izimbotshana ezingezekile zokuvikela kungakuthuthukisa kakhulu ukuqina kwamakhoyili ensimbi ye-galvanized ezimeni ezinjalo.
Ukushisa Ukushintshashintsha
Ukushisa okwedlulele nokushintshashintsha kwezinga lokushisa kungathinta ubuqotho bukaZin Amazinga okushisa aphakeme angadala i-opidation esheshisiwe ye-zinc under, ngenkathi amazinga okushisa eqhwa angaholela ekwakhekeni kokubuyiselwa kwemali, ukwethula umswakama okhuthaza ukugqwala. Ngaphezu kwalokho, ukwanda okushisayo kanye nokukhishwa kungadala ama-microcacks ku-coating, kuveze insimbi eyisisekelo.
Ukucwaninga okushicilelwe kwiphephabhuku isayensi Yesayensi Lokhu kuthola kugcizelela isidingo sokulawulwa kokushisa noma ukusetshenziswa kwezimbozo ezikhethekile eziklanyelwe ukubekezelela ukucindezelwa okushisayo ezindaweni ezinokushisa okuthe xaxa.
Ikhwalithi ebonakalayo nokuqina kokuhlanganisa
Ukwakheka kwensimbi
Izinto ezifuywayo zekhoyili yensimbi ye-galvanized zensimbi zithinta isikhathi eside. Ukwakheka kwamakhemikhali kwensimbi, kufaka phakathi ubukhona bezinto ezifana ne-silicon ne-phosphorus, kungathinta inqubo ye-galvanization kanye nokunamathela kwe-zinc coating. Izinga eliphakeme le-silicon ne-phosphorus lingaholela ekwakhekeni kwezingqimba ze-brittle yokuhlangana ngesikhathi se-galvanization, ezingahle zinciphise izimfanelo zokuvikela ukuhlanganiswa.
Ucwaningo olwenziwa yinsimbi yabasunguli beNhlangano YeMelika lukhombisa ukuthi ama-Steel anokuqukethwe kwe-silicon ngaphansi kwe-0.04% noma phakathi kuka-0.15% no-0.22% ekhombisa izici ezinhle kakhulu ze-galvanizing. Ngakho-ke, ukukhetha insimbi esezingeni eliphakeme nge-Chemical Composition elungile kubalulekile ukuze kuqinisekiswe ukuhlanganiswa okuhlala isikhathi eside futhi kunwebe isikhathi sokuphila kwekhoyili.
I-Zinc coating qhwan
Ubukhulu be-zinc coating bulingana ngqo nokuphila isikhathi eside kwekhoyili yensimbi ye-galvanized. Izimbozo ezinkulu zinikezela ngokuvikelwa okukhulu ekugcekeni ngokunikela ngongqikithi we-zinc omkhulu. Ubukhulu be-coation buvame ukumiswa, ngokuqokwa okufana ne-G60 noma i-G90, okukhombisa inani le-zinc elisetshenzisiwe ngonyawo lwesikwele.
Ngokusho kwamazinga we-ASTM, ukuhlanganiswa kwe-G90 kuhambelana ne-zinc ungqimba cishe ka-0.9 ounces ngonyawo lwesikwele, ukuhlinzeka ngokuvikelwa okuthuthukile ngaphezulu kwe-G60 coating (ama-ounces angu-0.6 ngakunye ngonyawo lwesikwele). Ukukhetha ubukhulu obufanele be-coation ngokususelwa kuhlelo lokusebenza okuhlosiwe nezimo zezemvelo kubalulekile. Isibonelo, ikhoyili yensimbi ye-galvanized nge-G90 Coating ingcono kakhulu ekusetshenzisweni kwangaphandle lapho kulindelwe khona lapho kulindelwe khona.
Ukucindezelwa kwemishini nokuphatha
Ukuxineka ngokomzimba
Izingcindezi ezisebenza ngomshini njengokugoba, ukwakha, noma ukwelula kunganciphisa ubuqotho be-zinc coating. Ngezinqubo zokuqamba, ukuguquguquka ngokweqile kwensimbi kungadala ukuqhekeka noma ukufiphala kwe-zinc ungqimba, kuveze i-substrate yensimbi ezintweni ezilimazayo. Kubalulekile ukubheka i-actility ye-galvanized coating kanye nezakhiwo zemishini zensimbi lapho kuklanywa izakhi.
Ukuqalisa amasu afanelekile okubukwa, njengokuqinisekisa ukugoba kancane kancane nokugwema imiphetho ebukhali, kunganciphisa ukulimala kwinhlanganisela. Ukusetshenziswa kwezimbozo eziguquguqukayo noma izinqubo ze-post-galvaning zezakhi ezenziwayo nazo zingagcina ungqimba oluvikelayo futhi zithuthukise ukuqina komkhiqizo jikelele.
Ukuphatha kanye Nemikhuba Yokugcina
Ukusingathwa okungafanele nokugcinwa kwamakhoyili ensimbi ye-galvanized kungaholela ekulimaleni ngokomzimba kwe-zinc coating. Imihuzuko, ukugqashuma, kanye nemithelela ngesikhathi sokuhamba noma isitoreji kungasusa noma kunciphise ungqimba oluvikelayo, okwenza insimbi ithambekele ekugqwalisweni. Ngokwengeziwe, ukufaka amakhoyili ngaphandle kwabahlukanisi abafanele kungaholela kumaphoyinti wokucindezela kanye nokufakwa komswakama, ukukhuthaza imvelo evumelana nokugqwala.
Imikhuba emihle yokusingathwa ifaka ukusebenzisa izinto zokuvikela ngesikhathi sokuhamba, ukuqasha imishini efakwe ngama-grips athambile, kanye nabasebenzi bokuqeqesha kumasu wokuphatha kahle. Ukuze ugcine, ukugcina amakhoyili ezindaweni ezomile, ezingaphakathi ezinomswakama olawulwayo, futhi usebenzise ama-spacers ukuvumela ukujikeleza komoya kunganciphisa kakhulu ingozi yokugqwala futhi kunwebe isikhathi sokuphila kwamakhoyili.
Izindlela zokuvikela kanye nokunakekelwa
Ukumboza okwengeziwe nokwelashwa
Ukuthuthukisa isikhathi eside amakhoyili ensimbi ye-galvanized, ukusebenzisa okwengeziwe okuvikelayo kunganikeza ngesithiyo esengeziwe ngokumelene nezinto ezilimazayo. Izambatho ezi-organic ezinjengopende, ama-epoxies, noma ukumbona kwe-powder kungabopha ungqimba lwe-zinc, ukuvimbela ukuvezwa okuqondile kumswakama namakhemikhali. Izinhlelo ze-Duplex, ezihlanganisa i-galvanization nge-organic coatic, zikhonjiswe ukwelula kakhulu impilo yensiza yemikhiqizo yensimbi.
Isibonelo, isifundo ku-Journal of Coating Technology and Research sakhombisa ukuthi amasistimu we-Dumplex anganwebeka isikhathi sokuphila sensimbi efinyelela ezikhathini ezifika ku-1.5 uma kuqhathaniswa neGalvanization kuphela. Ukukhetha ukugcinwa okunokumelana okuphezulu kwe-UV nokuqina kwamakhemikhali kubalulekile ukuze kusetshenziswe izicelo ezivulelwe izimo zemvelo.
Ukulungiswa Njalo Nokuhlola
Ukuqalisa uhlelo lokulondolozwa njalo kubalulekile ekutholeni nasekubhekaneni nezinkinga ezingase zihlehlise ubuqotho be-galvanized coating. Ukuhlola kufanele kugxile ekuhlonzeni izimpawu zokugqwala, ukulimala kwama-coapal, noma ushintsho lwezemvelo olungathinta amakhoyili. Ukutholwa kusenesikhathi kuvumela izenzo zokulungisa ngesikhathi, njengokusebenzisa izimbobo zokuthinta noma ukusebenzisa izindlela zokuvikela ukuvimbela ukonakala okwengeziwe.
Imikhuba yokulungiswa ingafaka phakathi kokuhlanza amakhoyili ukuthi ikhiphe izinsalela ezonakalisayo, iqinisekisa ukudonsa okufanele ezindaweni zokugcina ukuvikela ukuqongelela umswakama, kanye nokubheka izimo zemvelo. Ukulandela amazinga ezimboni kanye nemihlahlandlela yokulungiswa kungakhulisa kakhulu isikhathi sokuphila kwamakhoyili ensimbi ye-galvanized.
Izifundo zamacala nezibonelo zomkhakha
Ukuhlola izibonelo zangempela zomhlaba kuhlinzeka ngokuqonda okubalulekile kokuthi izici ezahlukahlukene zithonya kanjani isikhathi eside kwamakhoyili ensimbi ye-garyvanized. Kokunye ukutadisha, inkampani yokwakha isebenzisa amakhoyili ensimbi enziwe nge-galvanized nge-G60 evamile yokugoba endaweni yasogwini ebonwe ukubhujiswa ngaphambi kwesikhathi kungakapheli iminyaka emihlanu. Lapho kuhlaziywe, kwanqunywa ukuthi inhlanganisela yokuhlushwa kukasawoti okuphezulu nokuqina kokuhlanganiswa okunganele kwaholela ekuphindiseni isikhathi eside. Ngokushintshela kwi-G90 Coating futhi ungeze i-Primer ye-Epoxy, le nkampani yanweba isikhathi sokuphila semikhiqizo yensimbi engaphezu kwama-50%.
Esinye isibonelo kuhilela inkampani yezokwakha enolwazi lokuhluleka kwezindawo ezifanele ngenxa yemikhuba yokugcina engafanele. Amakhoyili agcinwe ngaphandle ngaphandle kwembozo yokuvikela, okuholela ekuhlolweni kwamanzi kanye nokuthuthuka okusheshayo. Ngemuva kokuthola isitoreji sasendlini ngokulawulwa komswakama futhi kusetshenziswe ukuhlolwa okujwayelekile, i-firm yabona ukwehla okukhulu ezindabeni ezihlobene nokukhulisa, ngcono ukuqina kwazo I-Galvanized Steel Coil yokusungula.
Imibono yochwepheshe nezincomo
Ochwepheshe bezimboni bagcizelela ukubaluleka kwendlela ephelele yokwelula isikhathi sokuphila kwamakhoyili ensimbi ye-garyvanized. UDkt John Smith, i-metallurgist eneminyaka engaphezu kwengu-20 yesipiliyoni, iphakamisa ukuthi 'Ukukhetha inhlanganisela efanelekile yokwakheka kwensimbi, indlela yokuvikela, kanye nezingubo zokuvikela ezihambisana nezimo ezithile zemvelo zibalulekile ukuze kukhuliswe ukuqina. '
Ngokufanayo, uJane Doe, umeluleki wemboni, uqokomisa indima yesondlo:
Ochwepheshe futhi bancoma ukuhlala buvuselelwa ngentuthuko kubuchwepheshe be-coating kanye nesayensi yezinto zokwakha. Izinto ezintsha ezinjenge-nano-coatings nezinto zokwakha zokuzilapha zinikeza izindlela ezithembisayo zokuthuthukisa isikhathi eside semikhiqizo yensimbi egayiwe.
Ukugcina
Ukuphila isikhathi eside kwamakhoyili ensimbi ye-galvanized kuthonywa ukuxhumeka okuyinkimbinkimbi kwezimo zezemvelo, ikhwalithi yezinto ezibonakalayo, izici zemishini kanye nezindlela zokugcina. Kumafektri, abalingani beziteshi, kanye nabasabalalisi, ukuqonda lezi zinto kubaluleke kakhulu ekwenzeni izinqumo ezinolwazi ezithuthukisa ukusebenza komkhiqizo kanye nokwethenjwa. Ngokukhetha ikhoyili yensimbi esezingeni eliphakeme, esebenzisa izindlela ezifanele zokuvikela, kanye nokunamathela emikhubeni engcono kakhulu ekusingatheni nasekulungiseni, ababambiqhaza banganweba kakhulu impilo yensiza yemikhiqizo yabo yensimbi.
Embonini ezokuvela okuphakade, ukuhlala kahle kwezentulelo zezobuchwepheshe kanye namasu okuqhubeka okucwengisisa ngokuqhubekayo ukuze aqinisekise ukuthi amakhoyili ensimbi enziwe ngezinsimbi ahlala enesixazululo esiqinile nesibi esibizayo ngezicelo ezahlukahlukene. Ukuqonda okuhlinzekwe kulokhu kuhlaziya kusebenza njengesiqondisi esiphelele sokwandisa isikhathi eside kwamakhoyili ensimbi ye-galvanized, kufaka isandla ekusebenzeni kahle futhi kuncishiswe izindleko zesikhathi eside.
