Insimbi ephindwe kabili ibhekisela emndenini wezinsimbi ezingagqwali ezinesakhiwo esincane esinezigaba ezimbili esakhiwe yizigaba ezimbili ze-austenitic (isakhiwo sekristalu le-cubic esiphakathi kobuso) kanye nezigaba ze-ferritic (isakhiwo sekristalu le-cubic esiphakathi komzimba). Lesi sakhiwo sezigaba ezimbili sitholakala ngokwakheka kwe-alloy ethile ehlanganisa izinto ezifana ne-chromium, i-nickel, i-molybdenum, ne-nitrogen.
Izinsimbi ezingenalutho ezi-duplex ezivame kakhulu zingezochungechunge lwe-UNS S3XXX, lapho u-“S” emele insimbi engagqwali, futhi izinombolo zibonisa ukwakheka kwe-alloy ethile. Isakhiwo esincane esinezigaba ezimbili sinikeza inhlanganisela yezakhiwo ezifiselekayo, okwenza insimbi e-duplex ifanelekele izinhlelo ezahlukene zokusebenza. Ezinye izici ezibalulekile zensimbi e-duplex zifaka:
1. Ukumelana Nokugqwala: Insimbi ye-Duplex inikeza ukumelana okuhle kakhulu nokugqwala, ikakhulukazi ezindaweni ezinzima eziqukethe ama-chloride. Lokhu kuyenza ifaneleke ukusetshenziswa ekucubungulweni kwamakhemikhali, uwoyela negesi, kanye nokusetshenziswa kwasolwandle.
2. Amandla Aphezulu: Uma kuqhathaniswa nezinsimbi ezingagqwali ze-austenitic, insimbi ye-duplex inamandla aphezulu, okwenza ifaneleke ukusetshenziswa lapho kudingeka khona amandla emishini akhuphukile.
3. Ukuqina Nokuqina Okuhle: Insimbi ye-Duplex igcina ukuqina nokuqina okuhle, ngisho nasemazingeni okushisa aphansi. Le nhlanganisela yezakhiwo iwusizo ekusetshenzisweni lapho izinto zingase zithwalwe khona yimithwalo namazinga okushisa ahlukahlukene.
4. Ukumelana Nokuqhekeka Kokucindezeleka: Insimbi ephindwe kabili ikhombisa ukumelana okuhle nokuqhekeka kokuqhekeka kokucindezelwa, uhlobo lokuqhekeka okungenzeka ngaphansi kwethonya elihlangene lokucindezeleka okucindezelwayo kanye nendawo egqwalisayo.
5. Isebenza Kahle: Nakuba insimbi ephindwe kabili ingabiza kakhulu kunensimbi engagqwali ye-austenitic evamile, izici zayo zokusebenza zivame ukuthethelela izindleko, ikakhulukazi lapho ukumelana nokugqwala namandla kubalulekile khona.
Amamaki ensimbi engagqwali avamile e-duplex afaka phakathii-duplex 2205 (UNS S32205)kanye ne-duplex 2507 (UNS S32750). Lawa mabanga asetshenziswa kabanzi ezimbonini ezifana nokucubungula amakhemikhali, ukuhlola uwoyela negesi, ubunjiniyela basolwandle nolwandle, kanye nokukhiqizwa kwe-pulp nephepha.
Isikhathi sokuthunyelwe: Novemba-27-2023