Impendulo iwukuthi izinga316 insimbi engagqwaliungcono kune304 insimbi engagqwali, ngoba i-316 insimbi engagqwali ihlanganiswe ne-metal molybdenum ngesisekelo se-304, lesi sici singahlanganisa ukwakheka kwamangqamuzana ensimbi engagqwali, okwenza kube ukumelana nokugqoka nokulwa ne-oxidation, futhi ngesikhathi esifanayo, ukumelana nokugqwala nakho kwanda kakhulu. Ake sibheke 304 insimbi engagqwali kanye 316 insimbi engagqwali okuyinto enhle. Izinhlobo ezisetshenziswa kakhulu zensimbi engagqwali ziyi-304 kanye ne-316. Uhlelo lokuphatha lokugreda olusetshenziselwa ukuhlukanisa lezi zinhlobo ezimbili zensimbi luvela ngokuyinhloko ohlelweni lolwazi lwezinombolo olwaqalwa yi-American Iron and Steel Association of China (AISI), omunye wemizamo yakudala yezinyunyana kuze kube manje ukubuyela emuva ku-1855. Lezi zigaba zibonisa ukwakheka kwazo, futhi iningi le-austinste steel grade 2000 - futhi libhekwa njenge-steel 2000. Inqubo ye-austenitizing ihlanganisa ukushisisa i-iron, i-ferroalloy, noma insimbi kuze kube yilapho isakhiwo sayo sekristalu sishintsha sisuka ku-ferrite siye ku-austenite. Nakuba kunzima ukuhlukanisa lezi zinto ezimbili ngeso lenyama, izakhiwo zomkhiqizo eziyingqayizivele phakathi kuka-304 no-316 wezinkampani zensimbi engagqwali zingazenza zibe phezulu kwezinye izinhlelo zokusebenza zobuchwepheshe.
Kusukela ekuthuthukisweni kokukhiqizwa kwamaShayina ekhulwini lama-20, izinkampani zensimbi engagqwali seziphenduke izinto ezibalulekile ezinethonya kumaphrojekthi amaningi e-China ngenxa yokuqina kwazo, ukusebenza okuphezulu kwemishini, ukushisela nokuvumelana nezimo. Iqukethe amaphesenti amaningana ahlukene ezinto anesibopho samazinga ahlukene aziwayo njengamanje. Ibanga ngalinye linezakhiwo zalo ezihlukile, futhi ukuqhathanisa phakathi kwamabanga amabili, njengokungaphelelwa yisikhathi njengokwenziwa kwawo, kuyinsimbi engagqwali engu-304 no-316.
Yikuphi okungcono, 304 noma 316 insimbi engagqwali
Uma ubheka izinhlobo ezimbili zensimbi, ziyefana ngokubukeka kanye nokwakheka kwamakhemikhali. Zombili zinikeza isivikelo esihle kakhulu ekugqwaleni nasekugqwaleni, kuyilapho zinikeza ukuqina okwengeziwe. Uma uqhathanisa i-304 ne-316 yensimbi engagqwali, izindleko eziphakeme kakhulu zale zakamuva zingabalelwa ekuphikisweni kwayo okungcono kakhulu kokugqwala. Ngenxa yalo mehluko wamanani kanye nendawo elinganiselwe evumelana nensimbi engu-316, insimbi engu-304 iyinsimbi engagqwali ye-austenitic esetshenziswa kakhulu.
I-Grade 316 insimbi engagqwali ibiza kakhulu ngenxa yokumelana nokugqwala okungcono. Ezisetshenziswa lapho ama-alloys echayeke ezixazululweni ezine-chlorine nama-chloride (okuhlanganisa namanzi olwandle aseShayina), kunconywa kakhulu ukuthi isistimu isetshenziswe ngale ngxube enamabanga ekhwalithi ephezulu. Ingase isetshenziselwe ukunweba impilo yenethiwekhi yesevisi yezingxenye noma okokusebenza okuchayeka kancane kancane ezimeni zemvelo ezinzima nezibi kakhulu, ikakhulukazi ezimeni ezibandakanya ukuchayeka kusawoti okuyinkinga. Nokho, ileveli 304 iwusizo kakhulu izicelo eziningi. Kafushane, uma ubheka izinsimbi ezingenasici ezingama-304 nezingu-316, ngezinhlelo zokusebenza ezidinga ukugqwala okuhle kakhulu noma ukumelana namanzi, sebenzisa izinsimbi ezingama-316 ezingenasici. Kwezinye izinhlelo zokusebenza, insimbi engagqwali engu-304 nayo yenziwa ubunjiniyela. Sekukonke, i-304 ne-316 amakhodi ensimbi engagqwali, empeleni, akukho mehluko phakathi kwawo yinsimbi engagqwali, ihlukaniswe ngokwezinhlobo ezahlukene. Kalula nje, ikhwalithi ye-316 yensimbi engagqwali inkulu kune-304 insimbi engagqwali, i-316 insimbi engagqwali ngesisekelo se-304 ku-molybdenum yensimbi, lesi sici singahlanganisa ukwakheka kwamangqamuzana ensimbi engagqwali, kwenze kube ukumelana nokuguga kanye ne-oxidation, ngasikhathi sinye, ukumelana nokugqwala kukhuphuke kakhulu.
Imikhiqizo ehlobene
Isikhathi sokuthumela: Sep-19-2023