I-Duplex insimbi engagqwali ine-microstructure yesigaba ezimbili lapho ingxenye yevolumu ye-ferrite ne-austenite cishe i-50%.Ngenxa ye-microstructure yabo yezigaba ezimbili, lezi zinsimbi zihlanganisa izakhiwo ezingcono kakhulu ze-ferritic kanye ne-austenitic stainless steels.Ngokujwayelekile, isigaba se-ferrite (i-cubic lattice ye-cubic egxilwe emzimbeni) inikeza ukuqina okuphezulu kwe-aurosten kanye namandla amahle, i-coror enhle (i-cubic lattice egxile ebusweni) inikeza i-ductility enhle.
Inhlanganisela yalezi zakhiwo yingakho izinsimbi ezingenasici eziyi-duplex zisetshenziswa kakhulu embonini ye-petrochemical, i-pulp nephepha, izimboni zasolwandle neziphehla ugesi.Zingakwazi ukumelana nemithombo yezindaba ezonakalisayo, zandise isikhathi sesevisi, futhi zisebenze ezimweni ezimbi kakhulu zemvelo.
Izinto ezisezingeni eliphezulu zikuvumela ukuthi unciphise ukujiya kwengxenye nesisindo.Ngokwesibonelo, i-super duplex insimbi engagqwali inganikeza amandla okukhiqiza aphindwe kathathu noma kane kanye nokumelana okuphakeme kokugqwala komgodi kunensimbi engagqwali engu-316.
Izinsimbi ezingenasici ze-Duplex zihlukaniswa ngamamaki amathathu ngokusekelwe kokuqukethwe kwe-gravimetric chromium (Cr) kanye nenombolo elinganayo yokumelana ne-pitting (PREN):
Esinye sezici ezibalulekile zokushisela i-DSS, i-SDSS, i-HDSS kanye nezinsimbi ezikhethekile ze-alloy stainless ukulawulwa kwemingcele yokushisela.
Izidingo zenqubo yokushisela imboni ye-petrochemical zinquma inani eliphansi le-PREN elidingekayo ezinsimbi zokugcwalisa.Ngokwesibonelo, i-DSS idinga i-PREN engu-35 futhi i-SDSS idinga i-PREN engu-40.Umfanekiso 1 ubonisa i-DSS kanye nensimbi yayo yokugcwalisa efanayo ye-GMAW ne-GTAW. Ngokuvamile, okuqukethwe kwe-Cr kwensimbi yokugcwalisa kuzofana nalokho kokuprakthiza ukuze kucatshangelwe isisekelo sensimbi futhi i-GTA isetshenziswa yi-hone yensimbi. Uma insimbi yokushisela ingafani ngenxa yendlela embi, insimbi yokugcwalisa enengxubevange eminingi inganikeza i-PREN efiselekayo namanye amanani esampula elishiselwe.
Njengesibonelo sokukhombisa lokhu, abanye abakhiqizi batusa ukusebenzisa intambo yokugcwalisa ye-SDSS (25% Cr) kuma-alloys asekelwe ku-DSS (22% Cr), kanye ne-HDSS filler wire (27% Cr) kuma-alloys asekelwe ku-SDSS (25% Cr). Kuma-alloys asekelwe ku-HDSS, ungasebenzisa futhi i-HDSS filler wire. I-chromium engu-27%, i-nickel engu-6.5%, i-molybdenum engu-5% futhi ibhekwa njengengaphansi kuka-0.015% wekhabhoni ephansi.
Uma kuqhathaniswa ne-SDSS, ukupakishwa kwe-HDSS kunamandla okukhiqiza aphezulu kanye nokumelana okungcono nokugqwala kwe-pitting kanye ne-crevice. Iphinde ibe nokuphikiswa okuphakeme kokuqhekeka kwengcindezi okubangelwa i-hydrogen kanye nokumelana okuphezulu nezindawo ezine-acidic enamandla kune-SDSS.
Njengoba kunikezwe ububanzi obubanzi bezinto eziyisisekelo, izidingo zemishini kanye nezimo zesevisi, sicela ucabangele ukubonisana nohlelo lwe-DSS kanye nochwepheshe bensimbi yokugcwalisa ngaphambi kokuthi uqale iphrojekthi yakho elandelayo.
I-WELDER, eyayaziwa ngokuthi i-Practical Welding Today, ibonisa abantu bangempela abenza imikhiqizo esiyisebenzisayo nesisebenza ngayo nsuku zonke.Lo magazini ususebenzele umphakathi wokushisela eNyakatho Melika iminyaka engaphezu kwengu-20.
Manje ngokufinyelela okugcwele kuhlelo lwedijithali lwe-FABRICATOR, ukufinyelela okulula kuzinsiza ezibalulekile zemboni.
Uhlelo lwedijithali lwe-The Tube & Pipe Journal manje selufinyeleleka ngokugcwele, lunikeza ukufinyelela okulula kuzinsiza ezibalulekile zemboni.
Jabulela ukufinyelela okugcwele kuhlelo lwedijithali lwe-STAMPING Journal, oluhlinzeka ngentuthuko yakamuva yezobuchwepheshe, imikhuba emihle kanye nezindaba zemboni zemakethe yokugxiviza izitembu zensimbi.
Manje ngokufinyelela okugcwele kuhlelo lwedijithali lwe-The Fabricator en Español, ukufinyelela okulula kuzinsiza ezibalulekile zomkhakha.