Kungani umkhono wensimbi engenasici ongu-316L unokumelana nokugqwala okungcono?

Izinto zensimbi engagqwali eziguquguqukayo zemikhono engangeni manzi ziyi-304,316L, izici zayo ezibonakalayo zizinzile, ukuguquguquka kwensimbi nakho kuhle kakhulu, okubalulekile ukuthi ukumelana nokugqwala kungcono, endaweni yemvelo emanzi nebanda, noma endaweni yemvelo. indawo enemithetho yokunqanda ukugqwala, enemikhono yensimbi engenamanzi engenamanzi, ngemva kwesixazululo esithile, inomphumela omuhle kakhulu wokulwa nomswakama kanye nokubola.

1.Ngaphansi kwamanzi

Futhi echibini lokuhlanza amanzi lesitshalo samanzi, kusetshenziswa imikhono yensimbi engagqwali eguquguqukayo engangeni manzi, okungukuthi, ngenxa yokuthi akulula ukugqwala, noma izinga lokugqwala lihamba kancane.Kuyo yonke inqubo yokwakha yephrojekthi ethile, uma ipayipi lodonga lingashintshwa ngensimbi engenasici engenamanzi, ukuze udonga kanye nepayipi lithinte ngokushesha, okokuqala, amandla odonga atholakala phezulu kwepayipi kulula kakhulu. , okuholela ekuguqulweni noma ngisho nokuphuka kwepayipi, okwesibili, ukuvuza kwepayipi kuholela ekukhululweni kodonga kuzophinde kubangele umonakalo omkhulu kupayipi.Akunzima ukubona ukuthi kubaluleke kangakanani ukusebenza kahle kwensimbi engagqwali engangenwa amanzi.

2.Emoyeni

Ingaphezulu lemikhiqizo yensimbi lizosabela nomoya-mpilo emkhathini ukuze kwakhiwe ifilimu ye-oxide phezulu.Umehluko ukuthi i-iron oxide eyakhiwe phezu kwe-carbon steel evamile izoqhubeka ne-oxidize, okwenza ukugqwala kuqhubeke kwanda futhi ekugcineni kwakhe izimbobo.Ingaphezulu lepayipi elishiselwe lensimbi engu-316L lizophinde lihlangane nomoya-mpilo, kodwa ngenxa yokuqukethwe kwawo okuphezulu kwe-chromium, ukumelana nokugqwala kwensimbi engagqwali kuncike ku-chromium.Lapho okuqukethwe kwe-chromium eyengeziwe kufinyelela ku-10.5, ukumelana nokugqwala komkhathi wensimbi kuyathuthukiswa, futhi okuqukethwe kwe-chromium kwepayipi elishiselwe lensimbi engu-316L kungaphezu kuka-17. Isizathu siwukuthi lapho insimbi ixubene ne-chromium, uhlobo lwe-oxide engaphezulu. ishintshwa ukuze ifane nohlobo olwakhiwe ngensimbi emsulwa ye-chromium.Le oxide enamathiselwe ngokuqinile nge-chromium ecebile ivikela indawo engaphezulu ekuphumeni okwengeziwe kwe-oxidation.Lolu ngqimba lwe-oxide luncane kangangokuthi ukucwebezela kwemvelo kwendawo yensimbi kungabonakala ngalo.