1. Isizukulwane sesibili se-duplex steel stainless steel pipe sinezici ze-ultra-low carbon, i-nitrogen ephansi, ukwakheka okujwayelekile okungu-Cr5% Ni0.17%n kanye nokuqukethwe kwe-nitrogen ephakeme ngo-2205 kunesizukulwane sokuqala sepayipi lensimbi engagqwali eliyi-duplex, elithuthukayo. ukumelana nokugqwala kwengcindezi kanye nokumelana nokugoba kwemithombo ye-acidic ene-high chloride ion concentration.I-nitrogen iyisici esiqinile sokwenza i-austenite.Ukwengezwa kwe-nitrogen ensimbi engagqwali e-duplex akugcini nje ukuthuthukisa ipulasitiki nokuqina kwensimbi ngaphandle kokulimala okusobala, kodwa futhi kuthuthukisa amandla ensimbi, futhi kuvimbela imvula nokubambezeleka kwe-carbides.
2. Umsebenzi wenhlangano: Ku-greenhouse, i-austenite ne-ferrite i-akhawunti cishe ingxenye yesisombululo esiqinile, esinezici zesakhiwo se-biphase.Igcina izici zenani elincane le-ferritic insimbi engagqwali, ukumelana nokugoba, ukuqhekeka kanye nokugqwala kokucindezeleka kwe-chloride, ngokuqina okuhle, izinga lokushisa eliphansi le-embrittlement, ukumelana nokugqwala kwe-intergranular kanye nezakhiwo zemishini kanye nokushisela okuhle.
3. Ngaphansi kwezimo ezifanayo zebanga lokucindezela kungasindisa izinto zokwakha, amandla okukhiqiza kanye nokumelana nokugqwala kwengcindezi yepayipi lensimbi engagqwali ephindwe kabili cishe izikhathi ezi-1 kune-austenitic stainless steel, i-coefficient yokukhulisa eqondile ingaphansi kwe-austenitic stainless steel ye-austenitic stainless. uhlelo lwensimbi, futhi insimbi ye-carbon ephansi iseduze nayo.Ukubumba okubandayo akukuhle njengensimbi engagqwali ye-austenitic.
4. I-Weldability: i-duplex steel stainless steel pipe 2205 inokushisela okuhle, ukushisela okubandayo, ukuzwela okushisayo okushisayo kuncane, ngokuvamile akukho ukushisa ngaphambi kokushisela, akukho ukwelashwa kokushisa ngemva kokushisela.Ngenxa yokuthambekela okuncane kwe-ferrite yesigaba esisodwa kanye nokuqukethwe okuphezulu kwe-nitrogen endaweni ethintekile ekushiseni, amandla e-welding wire angalawulwa ngalesi sikhathi lapho izinto zokushisela zikhethwa ngokunengqondo, futhi ukusebenza okuphelele kuhle.
5. I-Hot crack: Ukuzwela kokuqhekeka okushisayo kuphansi kakhulu kunokwensimbi engagqwali ye-austenitic.Lokhu kungenxa yokuthi okuqukethwe kwe-nickel akuphakeme, ukungcola okulula ukwenza i-eutectic encibilikayo ephansi iphansi, ifilimu ye-liquid enephuzu eliphansi lokuncibilika akulula ukuyikhiqiza, futhi ukukhula okusheshayo kwengozi yokusanhlamvu akukho phezulu. amazinga okushisa.
6. Ukuqina kwendawo ethintekile ekushiseni: Inkinga enkulu yokushisela ipayipi lensimbi engagqwali ye-duplex yindawo ethintekile ekushiseni.Ngenxa yomphumela wokupholisa osheshayo wendawo ethintekile ekushiseni esimweni sokungalingani somjikelezo wokushisa kwe-welding, i-ferrite epholile kakhulu ihlale igcinwa, evame ukwandisa ukuzwela kokugqwala kanye nokuqhekeka okubangelwa i-hydrogen.
7. I-Welding Metallurgy: Ngesikhathi senqubo yokushisela i-duplex insimbi engagqwali, ngaphansi kwesenzo sokuhamba ngebhayisikili eshisayo, i-microstructure kanye nendawo ethinteke ukushisa yensimbi ye-weld ibe nochungechunge lwezinguquko.Emazingeni okushisa aphezulu, i-microstructure ye-duplex insimbi engagqwali ihuqwa yi-ferrite ne-austenite ngesikhathi sokupholisa.Inani lemvula ye-austenite lithintwa izici eziningi.
Isikhathi sokuthumela: Jun-26-2023