1. Ukugqwala kwe-atmospheric: ukugqwala kwe-atmospheric of metal material ikakhulukazi kuncike emhwamukeni wamanzi osemkhathini kanye nefilimu yamanzi engaphezulu kwempahla. Umswakama ohlobene nomkhathi ubizwa ngokuthi umswakama obalulekile lapho izinga lokubola komkhathi wensimbi liqala ukwanda kakhulu. Umswakama obalulekile weithusiingxubevange nezinye izinsimbi eziningi ziphakathi kuka-50% no-70%. Ukungcola komkhathi kunomphumela obalulekile wokuthuthukisa ukugqwala kwengxubevange yethusi. Ukubola kwezitshalo negesi yokukhipha efektri, igesi ye-ammonia ne-hydrogen sulfide emkhathini, i-ammonia isheshisa ngokuphawulekayo ukugqwala kwe-alloy yethusi, ikakhulukazi ukugqwala kwengcindezi. I-C02, SO2, NO2 nokunye ukungcola okune-asidi emkhathini wezimboni zasemadolobheni kuncibilika kufilimu yamanzi kanye ne-hydrolyze, okwenza ifilimu lamanzi libe ne-asidi kanye nefilimu evikelayo ukuthi ingazinzi.
2. I-Splash zone corrosion: ukuziphatha kokugqwala kwengxube yethusi endaweni yokuchaphaza yamanzi olwandle kusondele kakhulu kulokho okusemoyeni wolwandle. Noma iyiphi ingxubevange yethusi ekwazi ukumelana nokugqwala okuhle emimoyeni yasolwandle enokhahlo nayo izoba nokumelana nokugqwala okuhle endaweni ye-splash. I-spatter zone inikeza umoya-mpilo owanele ukusheshisa ukugqwala kwensimbi, kodwa yenza ingxubevange yethusi neyethusi ihlale ibuthuntu kalula. Izinga lokugqwala lama-alloys ethusi elivezwe endaweni ye-splash ngokuvamile alidluli ku-5μm/a.
3. Ukugqwala kwengcindezi: ukuqhekeka kwethusi kwesizini kuwuphawu olujwayelekile lokugqwala kwengcindezi yealloy yethusi. Imifantu yesizini, eyatholwa ekuqaleni kwekhulu lama-20, iyimifantu engxenyeni engenhla yegobolondo eshwabene ngasekhanda lempi. Lesi simo sivamise ukwenzeka ezindaweni ezishisayo, ikakhulukazi ngezikhathi zezimvula, yingakho kuqanjwe ngokuthi i-seasonal cleft. Ngenxa yokuthi ihlobene nokuphuma kwe-ammonia noma i-ammonia, ibizwa nangokuthi i-ammonia crack. Eqinisweni, ukuba khona kwe-oksijini nezinye izinto eziphilayo, kanye nokuba khona kwamanzi nakho kuyizimo ezibalulekile zokucindezeleka kokugqwala kwethusi.
4. Ukubola kokubola: i-dezinc yethusi ingenye ye-corrosion ye-alloy ye-alloy ejwayelekile kakhulu, ingahambisana nenqubo ye-corrosion yokucindezeleka ngesikhathi esifanayo, ingenzeka yodwa. Kunezinhlobo ezimbili ze-dezincification: enye i-lamellar shedding uhlobo lwe-dezincification, ekhombisa ifomu lokugqwala elifanayo, ukulimala okuncane uma kuqhathaniswa nokusetshenziswa kwezinto. Enye iwuhlobo olujulile lokuthuthuka okufana nebhawodi lokumisa i-dezincization, ngendlela yokugqwala komgodi, ukuze amandla wezinto ehle kakhulu, ukulimala okukhulu.
5. Ukugqwala kwemvelo yasolwandle: ukugqwala kwengxube yethusi endaweni yasolwandle ngaphezu komkhathi Wasolwandle, kukhona indawo echaphazekayo yamanzi olwandle, uhla lwamagagasi kanye nendawo yokucwiliswa ngokuphelele.
Isikhathi sokuthumela: Jun-27-2022