Insimbi ye-Duplex ibhekisela kwintsapho yeentsimbi ezingenasici ezinezigaba ezimbini ze-microstructure ezibandakanya zombini i-austenitic (i-face-centered cubic crystal structure) kunye ne-ferritic (i-body-centered body-centered cubic crystal structure) izigaba. Olu lwakhiwo lwezigaba ezimbini luphunyezwa ngokubunjwa kwealloyi ethile equka izinto ezifana nechromium, nickel, molybdenum, kunye nenitrogen.
Ezona ntsimbi zixhaphakileyo ze-duplex ze-stainless series ze-UNS S3XXX, apho i-"S" imele i-stainless, kwaye amanani abonisa ukuqanjwa kwe-alloy ethile. I-microstructure yesigaba ezibini inika indibaniselwano yeempawu ezinqwenelekayo, okwenza i-duplex steel ifaneleke kwizicelo ezahlukeneyo. Ezinye izinto eziphambili zentsimbi ye-duplex ziquka:
I-1.I-Corrosion Resistance: I-Duplex yentsimbi inika ukuxhathisa okugqwesileyo, ngokukodwa kwiindawo ezilukhuni ezinekloridi. Oku kuyenza ilungele ukusetyenziswa ekusetyenzweni kweekhemikhali, i-oyile negesi, kunye nezicelo zaselwandle.
I-2.Amandla aphezulu: Xa kuthelekiswa ne-austenitic stainless steels, i-duplex steel inamandla aphezulu, okwenza ukuba ifaneleke kwizicelo apho ukwanda kwamandla omatshini kuyadingeka.
I-3.Ukuqina okuhle kunye nokuxhamla: Intsimbi ye-Duplex igcina ukuqina okulungileyo kunye ne-ductility, nakwiqondo lokushisa eliphantsi. Olu luhlu lweepropati lubalulekile kwizicelo apho izinto eziphathekayo zinokuthi zixhomekeke kwimithwalo eyahlukeneyo kunye namaqondo okushisa.
I-4.I-Stress Corrosion Cracking Resistance: I-Duplex yensimbi ibonisa ukuchasana kakuhle noxinzelelo lwe-corrosion cracking, uhlobo lwe-corrosion olunokuthi lwenzeke phantsi kwempembelelo edibeneyo yoxinzelelo lwe-tensile kunye nendawo ephazamisayo.
I-5.Indleko-Esebenzayo: Nangona insimbi ye-duplex inokubiza kakhulu kune-austenitic stainless steel eqhelekileyo, iimpawu zayo zokusebenza zihlala zithethelela iindleko, ngokukodwa kwizicelo apho ukuxhathisa ukubola kunye namandla kubaluleke kakhulu.
Amabakala aqhelekileyo entsimbi ye-duplex abandakanyai-duplex 2205 (UNS S32205)kunye ne-duplex 2507 (UNS S32750). La mabanga asetyenziswa kakhulu kumashishini afana nokulungiswa kweekhemikhali, ukuhlola i-oyile negesi, i-offshore kunye nobunjineli baselwandle, kunye nokwenza i-pulp kunye nephepha.
Ixesha lokuposa: Nov-27-2023