Duplex simbi inoreva mhuri yesimbi isina tsvina ine maviri-phase microstructure inosanganisira ese austenitic (face-centered cubic crystal structure) uye ferritic (body-centered cubic crystal structure) zvikamu. Ichi chimiro chezvikamu zviviri chinowanikwa kuburikidza neyakagadzirirwa alloy kuumbwa kunosanganisira zvinhu zvakaita sechromium, nickel, molybdenum, uye nitrogen.
Iwo anonyanyozivikanwa duplex simbi isina tsvina ndeye UNS S3XXX akatevedzana, apo "S" inomiririra isina tsvina, uye manhamba anoratidza chaiwo alloy nziyo. Iyo miviri-chikamu microstructure inopa musanganiswa wezvinhu zvinodikanwa, ichiita duplex simbi yakakodzera kune akasiyana maapplication. Zvimwe zvakakosha zve duplex simbi zvinosanganisira:
1.Corrosion Resistance: Duplex simbi inopa yakanakisa corrosion resistance, kunyanya munzvimbo dzakaoma dzine chlorides. Izvi zvinoita kuti ive yakakodzera kushandiswa mukugadzirwa kwemakemikari, mafuta uye gasi, uye kushandiswa kwemvura.
2.High Strength: Inofananidzwa ne-austenitic stainless steels, duplex simbi ine simba rakakwirira, zvichiita kuti ive yakakodzera kune zvikumbiro apo kuwedzerwa kwesimba remagetsi kunodiwa.
3.Good Toughness uye Ductility: Duplex simbi inochengetedza kuoma kwakanaka uye ductility, kunyange pakudzika kwakadzika. Uku kusanganiswa kwezvivakwa kwakakosha mumashandisirwo uko zvinhu zvinogona kuiswa pasi pemitoro yakasiyana uye tembiricha.
4.Stress Corrosion Cracking Resistance: Duplex simbi inoratidzira kupikisa kwakanaka kumanikidziro ekuputika kwekuputika, rudzi rwehutu hunogona kuitika pasi pekubatanidzwa kwekunetseka kwekunetseka uye nzvimbo inoparadza.
5.Cost-Effective: Kunyange zvazvo duplex simbi inogona kudhura kudarika yakajairwa austenitic simbi isina tsvina, maitiro ayo ekushanda anowanzo ruramisa mutengo, kunyanya mumashandisirwo apo kushorwa kwekuora uye simba zvakakosha.
Common duplex Stainless simbi mamakisi anosanganisiraduplex 2205 (UNS S32205)uye duplex 2507 (UNS S32750). Aya mamakisi anoshandiswa zvakanyanya mumaindasitiri akadai semakemikari kugadzirisa, oiri uye gasi kuongorora, offshore uye marine engineering, uye pulp uye mapepa kugadzira.
Nguva yekutumira: Nov-27-2023