I-steel grating ineengenelo zokugcina intsimbi, ukumelana nomhlwa, ukwakhiwa okukhawulezayo, ukucoceka kunye nokuhle, ukungatyibiliki, ukungena komoya, akukho zibonda, akukho kuqokelelana kwamanzi, akukho kuqokelelwa kothuli, ukungabikho kokugcinwa, kunye nobomi benkonzo engaphezulu kweminyaka engama-30. Iya isanda ukusetyenziswa ngokubanzi ziiyunithi zokwakha. Umphezulu we-steel grating uphathwa, kwaye kuphela emva kokuba unyango oluthile lunokwandiswa ubomi bayo benkonzo. Iimeko zokusebenzisa i-steel grating kumashishini amashishini amaninzi avulekileyo okanye kwiindawo ezinomoya kunye ne-corrosion ephakathi. Ngoko ke, unyango olungaphezulu lwe-steel grating lubaluleke kakhulu kubomi benkonzo ye-steel grating. Oku kulandelayo kwazisa iindlela ezininzi eziqhelekileyo zonyango lomphezulu wegrayiti yentsimbi.
(1) I-galvanizing ye-Hot-dip: I-galvanizing ye-Hot-dip kukuntywilisela i-grating yentsimbi ekhutshwe ngumhlwa kulwelo oluphezulu lobushushu obunyibilikisiweyo be-zinc malunga ne-600℃, ukuze umaleko we-zinc uncanyathiselwe kumphezulu we-grating yentsimbi. Ubukhulu be-zinc layer abuyi kuba ngaphantsi kwe-65um kwiipleyiti ezincinci ezingaphantsi kwe-5mm, kwaye zingabi ngaphantsi kwe-86um kwiiplate ezishinyeneyo. Ngaloo ndlela kufezekiswa injongo yokuthintela umhlwa. Iingenelo zale ndlela kukuhlala ixesha elide, inqanaba eliphezulu lemveliso yemveliso, kunye nomgangatho ozinzile. Ngoko ke, isetyenziswe ngokubanzi kwiiprojekthi ze-steel grating zangaphandle ezonakaliswe kakhulu ngumoya kwaye kunzima ukuzigcina. Inyathelo lokuqala lokugalela i-hot-dip galvanizing kukuthabatha kunye nokususwa komhlwa, kulandele ukucoca. Ukungafezeki kwala manyathelo mabini kuya kushiya iingozi ezifihliweyo zokhuseleko lomhlwa. Ngoko ke, kufuneka ziphathwe ngokucokisekileyo.
(2) I-aluminium etshisiweyo eshushu (i-zinc) i-composite coating: Le yindlela yokukhusela ixesha elide kunye nefuthe elifanayo lokukhusela i-corrosion njenge-hot-dip galvanizing. Indlela ekhethekileyo kukuqala ngokuqhumisa isanti umphezulu wentsimbi ukususa umhlwa, ukuze umphezulu uveze intsimbi ekhazimlayo kwaye irhabaxa. Emva koko sebenzisa i-acetylene-oksijeni ilangatye ukunyibilikisa i-aluminiyam (zinc) yocingo eqhubekayo, kwaye uyivuthele kumphezulu we-grating yentsimbi ngomoya oxinzelelweyo ukwenza i-aluminiyam yobusi (izinc) yokutshiza (ukutyeba malunga ne-80um ~ 100um). Ekugqibeleni, gcwalisa i-capillaries ngeengubo ezifana ne-cyclopentane resin okanye ipeyinti yerabha ye-urethane ukuze wenze i-coating composite. Inzuzo yale nkqubo kukuba inamandla okulungelelaniswa nobukhulu bentsimbi yensimbi, kwaye imilo kunye nobukhulu bentsimbi yensimbi iphantse ithintelwe. Enye inzuzo kukuba impembelelo ye-thermal yale nkqubo yindawo kwaye inqandekile, ngoko ayiyi kubangela ukuguqulwa kwe-thermal. Xa kuthelekiswa ne-hot-dip galvanizing ye-grating yensimbi, le ndlela inezinga eliphantsi lokunyuka kwezoshishino, kwaye ubuninzi bomsebenzi wokuqhushumba kwesanti kunye ne-aluminium (zinc) iphezulu. Umgangatho nawo uchaphazeleka ngokulula kukutshintsha kwemo yomqhubi.
(3) Indlela yokwaleka: Ukuxhathisa umhlwa kwendlela yokwaleka ngokuqhelekileyo ayilunganga njengeyona ndlela yokuxhathisa ixesha elide. Inexabiso eliphantsi lexesha elinye, kodwa ixabiso lolondolozo liphezulu xa lisetyenziswa ngaphandle. Inyathelo lokuqala lendlela yokwaleka kukususa umhlwa. Iingubo ezikumgangatho ophezulu zixhomekeke ekususeni irusi ngokucokisekileyo. Ke ngoko, izinto zokugquma eziyimfuneko kakhulu ngokuqhelekileyo zisebenzisa i-sandblasting kunye nokuqhunyiswa kwesibhamu ukususa umhlwa, ukuveza ukukhazimla kwentsimbi, kunye nokususa yonke i-rust kunye ne-oil stains. Ukukhethwa kwengubo kufuneka kuthathelwe ingqalelo indawo engqongileyo. Iingubo ezihlukeneyo zineemeko ezahlukeneyo zokunyamezela kwiimeko ezahlukeneyo zokubola. Iingubo zihlulwe ngokubanzi zibe zi-primers (i-layers) kunye ne-topcoat (iingqimba). Iiprimers ziqulethe umgubo ongaphezulu kunye nesiseko esincinci. Ifilimu irhabaxa, ibambelele ngokuqinileyo kwintsimbi, kwaye inobudlelwane obuhle kunye neengubo eziphezulu. I-Topcoat inezixhobo ezininzi ezisisiseko, zineefilimu ezikhazimlayo, zinokukhusela i-primers kwi-corrosion ye-atmospheric, kwaye ziyakwazi ukumelana nemozulu. Kukho ingxaki yokuhambelana phakathi kweengubo ezahlukeneyo. Xa ukhetha iingubo ezahlukeneyo ngaphambi nangemva, qaphela ukuhambelana kwazo. Ukwakhiwa kokugquma kufuneka kube nobushushu obufanelekileyo (phakathi kwe-5 ~ 38℃) kunye nokufuma (ukufuma okuhambelanayo kungabi ngaphezu kwe-85%). Indawo yokwakhiwa kweengubo kufuneka ibe nothuli oluncinci kwaye akufanele kubekho ukuxinana phezu kwendawo yecandelo. Akufunekanga ibenemvula kwiiyure ezi-4 emva kokugquma. Ukugquma ngokuqhelekileyo kusetyenziswe amaxesha angama-4 ~ 5. Ubukhulu obupheleleyo befilimu yepeyinti eyomileyo yi-150um kwiiprojekthi zangaphandle kunye ne-125um kwiiprojekthi zangaphakathi, kunye nokutenxa okuvumelekileyo kwe-25um.
Ixesha lokuposa: Jun-05-2024