Ngesikhathi sokudluliswa kwamandla, umbhoshongo wensimbi uyingxenye ebaluleke kakhulu. Ngesikhathi sokukhiqizwa kwemikhiqizo yensimbi yombhoshongo wensimbi, inqubo yokukhiqiza i-hot-dip galvanizing ngokuvamile yamukelwa phezulu ukuze ivikele ubuso bemikhiqizo yensimbi ekugqwaleni komoya wangaphandle kanye nezindawo ezihlukahlukene. Ukusetshenziswa kwenqubo ye-hot-dip galvanizing kungafinyelela umphumela omuhle wokulwa nokugqwala. Ngezidingo eziphakeme zokudluliswa kwamandla, izidingo zenqubo yokukhiqiza imikhiqizo yensimbi yama-galvanized nazo ziphakeme.
(1) Umgomo oyisisekelo wokushibilikisa idiphu elishisayo
I-hot dip galvanizing, eyaziwa nangokuthi i-hot dip galvanizing, ingenye yezindlela ezinhle kakhulu zokuvikela i-substrate yensimbi. Ku-zinc ewuketshezi, ngemva kokuba ucezu lwensimbi lwenziwe ukwelashwa ngokomzimba namakhemikhali, ucezu lwensimbi lucwiliswa ku-zinc encibilikisiwe enezinga lokushisa elingu-440 ℃ ~ 465 ℃ noma ngaphezulu ukuze lilashwe. I-substrate yensimbi isabela ne-zinc encibilikisiwe yakhe ungqimba lwegolide lwe-Zn Fe kanye nongqimba oluhlanzekile lwezinc futhi lumboza yonke indawo yensimbi yokusebenza. Ingaphezulu elinothayela linokuqina okuthile, lingakwazi ukumelana nokungqubuzana okukhulu nomthelela, futhi linenhlanganisela enhle ne-matrix.
Le ndlela yokucwenga ayinakho nje kuphela ukumelana nokugqwala kwe-galvanizing, kodwa futhi ine-Zn Fe alloy layer. Futhi inokumelana nokugqwala okuqinile okungenakuqhathaniswa nokufaka i-galvanizing. Ngakho-ke, le ndlela yokucwenga ifaneleka ikakhulukazi ezindaweni ezigqwalile eziqinile njenge-asidi eqinile, i-alkali nenkungu.
(2) Izici zokusebenza ze-hot dip galvanizing
Inongqimba lwezinc oluqinile nominyene endaweni yensimbi, engagwema ukuthintana ne-substrate yensimbi nganoma yisiphi isisombululo sokugqwala futhi ivikele i-substrate yensimbi ekugqwaleni. Emkhathini ojwayelekile, ungqimba lwe-zinc oxide oluncane futhi oluminyene lwakhiwa ebusweni bengqimba ye-zinc, okunzima ukuyincibilika emanzini, ngakho-ke idlala indima ethile ekuvikeleni i-matrix yensimbi. Uma i-zinc oxide nezinye izakhi ezisemkhathini zenza usawoti we-zinc ongancibiliki, umphumela wokulwa nokubola ungcono kakhulu.
Ngemva kokushiswa kwe-hot-dip galvanizing, insimbi inongqimba lwe-Zn Fe alloy, oluhlangene futhi olukwazi ukumelana nokugqwala okuyingqayizivele emkhathini wenkungu kasawoti wasolwandle kanye nomkhathi wezimboni. Ngenxa yokuhlangana okuqinile, i-Zn Fe ayifani futhi inokumelana okuqinile nokugqokwa. Ngenxa yokuthi i-zinc ine-ductility enhle futhi isendlalelo sayo se-alloy sinamathele ngokuqinile ku-substrate yensimbi, i-hot-dip workpiece yama-galvanized ingakhiwa ngokushaya okubandayo, ukugoqa, ukudweba ucingo, ukugoba, njll ngaphandle kokulimaza i-zinc coating.
Ngemuva kokushisa okushisayo, i-workpiece yensimbi ilingana nokwelashwa kwe-annealing, engathuthukisa ngokuphumelelayo izakhiwo zemishini ye-substrate yensimbi, iqede ukucindezelwa kwendawo yokusebenza yensimbi ngesikhathi sokwenza nokushisela, futhi ivumela ukuguqula i-workpiece yensimbi.
Ingaphezulu lensimbi yokusebenza ngemuva kokushiswa komlilo liyakhanya futhi lihle. Isendlalelo se-zinc esihlanzekile siwungqimba oluningi lwepulasitiki lwezinki ekugayeleni okushisayo kwediphu. Izakhiwo zayo ngokuyisisekelo zifana ne-zinc ehlanzekile, futhi ine-ductility, ngakho-ke iyaguquguquka.
Isikhathi sokuthumela: Aug-26-2022
