Umbhobho oGalvanized
Iimveliso Inkcazo
I. Ulwahlulo olungundoqo: Ukuhlelwa ngeNkqubo yokuGalela
Umbhobho ofakwe igalvanized wahlulwe ngokwezintlu ezimbini: umbhobho wegalvanized wedip eshushu kunye nombhobho owenziwe ngesinyithi obandayo. Ezi ntlobo zimbini zahluke kakhulu kwinkqubo, ukusebenza, kunye nesicelo:
• Umbhobho wegalvanized wedip ediphu eshushu (hot-dip galvanized pipe): Umbhobho wentsimbi wonke untywiliselwa kwizinc etyhidiweyo, yenze umaleko ofanayo, oshinyeneyo wezinki kumphezulu. Lo maleko we-zinc ngokuqhelekileyo ungaphezulu kwe-85μm ubukhulu, uqhayisa ngokunamathela olomeleleyo kunye nokumelana nokugqwesa okugqwesileyo, kunye nobomi benkonzo yeminyaka engama-20-50. Okwangoku luhlobo oluqhelekileyo lombhobho we-galvanized kwaye lusetyenziswa ngokubanzi ekusasazeni kwamanzi kunye negesi, ukukhuselwa komlilo, kunye nezakhiwo zokwakha.
• Umbhobho wegalvanized wediphu obandayo (umbhobho osebenza ngombane): Umaleko we-zinc ufakwa kumphezulu wombhobho wentsimbi ngokwenziwa kombane. Umaleko we-zinc ubhityile (ngokuqhelekileyo yi-5-30μm), unoncamango obuthathaka, kwaye unikezela ukuxhathisa okuncinci kakhulu kunombhobho owenziwe ngamazinki ashushu. Ngenxa yokusebenza kwayo okungonelanga, imibhobho yegalvanized ngoku ayivumelekanga ukuba isetyenziswe kwizicelo ezifuna ukuxhathisa kwi-corrosion ephezulu, njengemibhobho yamanzi okusela. Zisetyenziselwa kuphela ubuninzi obulinganiselweyo kwizinto ezingenayo imithwalo kunye nezicelo ezingenamanzi, ezifana nezihombiso kunye nezibiyeli ezilula.
II. Eyona nto iluncedo
1. Ukuxhathisa okuqinileyo kwe-Corrosion: I-zinc layer ihlukanisa umbhobho wensimbi emoyeni kunye nomswakama, ukukhusela i-rust. Imibhobho ye-galvanized ye-Hot-dip, ngokukodwa, inokumelana nokusetyenziswa kwexesha elide kwiindawo ezilukhuni ezifana neendawo ezimanzi kunye nezangaphandle.
2. Amandla aphezulu: Ukugcina iipropathi ze-mechanical ze-carbon steel pipes, ziyakwazi ukumelana noxinzelelo oluthile kunye nobunzima, okwenza ukuba zilungele izicelo ezifana nenkxaso yesakhiwo kunye nokuthuthwa kwamanzi.
3. Iindleko ezifanelekileyo: Xa kuthelekiswa nemibhobho yensimbi engenasici, imibhobho ye-galvanized ineendleko eziphantsi zokuvelisa. Xa kuthelekiswa nemibhobho ye-carbon steel eqhelekileyo, ngelixa iindleko zenkqubo ye-galvanizing zinyuka, ubomi babo benkonzo bandiswa kakhulu, okubangelwa yindleko ephezulu.
III. Izicelo eziphambili
• Ishishini loKwakha: Isetyenziswa kwimibhobho yokukhusela umlilo, unikezelo lwamanzi kunye nemibhobho yokuhambisa amanzi (amanzi angaselwa), imibhobho yokufudumeza, iifreyimu zenkxaso yodonga lwekhethini, njl.
• ICandelo lezoShishino: Isetyenziswa njengemibhobho yokuthutha ulwelo (njengamanzi, umphunga, nomoya ocinezelweyo) kunye nezibiyeli zezixhobo kwiindibano zocweyo zasefektri.
• Ezolimo: Isetyenziswa kwimibhobho yokunkcenkceshela kumhlaba wasefama, iifreyimu zenkxaso yegreenhouse, njl.
• Ezothutho: Isetyenziswa ngobungakanani obuncinci njengemibhobho yesiseko kuhola wendlela kunye neepali zokukhanya ezitalatweni (ubukhulu becala imibhobho yegalvanized dip-dip).
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