Duplex Stainless Steel (DSS) ni ubwoko bwibyuma bitagira umwanda birimo ibice bingana na ferrite na austenite, hamwe nicyiciro gito muri rusange kigizwe nibura 30%.DSS mubisanzwe ifite chromium iri hagati ya 18% na 28% hamwe na nikel iri hagati ya 3% na 10%.Ibyuma bimwe na bimwe bya duplex bidafite kandi ibintu birimo amavuta nka molybdenum (Mo), umuringa (Cu), niobium (Nb), titanium (Ti), na azote (N).
Iki cyiciro cyibyuma bihuza ibiranga ibyuma byombi bya austenitike na ferritic.Ugereranije nicyuma cya ferritic, DSS ifite plastike nubukomezi bukabije, ikabura ubushyuhe bwicyumba, kandi ikerekana uburyo bwiza bwo kurwanya ruswa no gusudira.Muri icyo gihe, igumana ubukana bwa 475 ° C hamwe n’ubushyuhe bukabije bw’amashanyarazi ya ferritic idafite ibyuma kandi ikagaragaza ubudahangarwa.Ugereranije nicyuma cya austenitike kitagira umuyonga, DSS ifite imbaraga nyinshi kandi irwanya cyane kurwanya ingirabuzimafatizo hagati ya chloride na chloride.DSS ifite kandi imbaraga zo kurwanya ruswa kandi ifatwa nkicyuma kibika nikel.
Imiterere n'ubwoko
Bitewe nuburyo bubiri bwibice bya austenite na ferrite, hamwe na buri cyiciro kibarirwa hafi kimwe cya kabiri, DSS yerekana ibiranga ibyuma byombi bya austenitike na ferritic.Imbaraga z'umusaruro wa DSS ziva kuri 400 MPa kugeza kuri 550 MPa, zikubye kabiri icyuma gisanzwe cya austenitis.DSS ifite ubukana buhanitse, ubushyuhe bwo hasi bworoheje, kandi byanonosoye cyane kurwanya ruswa hagati yimitsi no gusudira ugereranije nicyuma cya ferritic.Igumana kandi ibyuma bimwe na bimwe bya ferritic bidafite ibyuma, nka 475 ° C ubukonje, ubushyuhe bwinshi, ubushyuhe buke bwo kwagura ubushyuhe, superplasticity, na magnetism.Ugereranije nicyuma cya austenitis kitagira umuyonga, DSS ifite imbaraga nyinshi, cyane cyane zitanga imbaraga, kandi ikanarwanya kurwanya imyanda, kwangirika kwangirika, numunaniro wa ruswa.
DSS irashobora gushyirwa mubwoko bune bushingiye kubigize imiti: Cr18, Cr23 (Mo-free), Cr22, na Cr25.Ubwoko bwa Cr25 burashobora kugabanywamo ibice bisanzwe kandi super duplex idafite ibyuma.Muri ibyo, ubwoko bwa Cr22 na Cr25 burakoreshwa cyane.Mu Bushinwa, amanota menshi ya DSS yemejwe akorerwa muri Suwede, harimo 3RE60 (ubwoko bwa Cr18), SAF2304 (ubwoko bwa Cr23), SAF2205 (ubwoko bwa Cr22), na SAF2507 (ubwoko bwa Cr25).
Ubwoko bwa Duplex Ibyuma
1. Ubwoko Buke-Alloy Ubwoko:Ihagarariwe na UNS S32304 (23Cr-4Ni-0.1N), iki cyuma ntabwo kirimo molybdenum kandi gifite numero ihwanye na Piting Resistance ihwanye na (PREN) ya 24-25.Irashobora gusimbuza AISI 304 cyangwa 316 murwego rwo kurwanya ruswa.
2. Ubwoko buciriritse:Uhagarariwe na UNS S31803 (22Cr-5Ni-3Mo-0.15N), hamwe na PREN ya 32-33.Kurwanya kwangirika kwayo hagati ya AISI 316L na 6% Mo + N austenitis ibyuma bitagira umuyonga.
3. Ubwoko Bwinshi bwa Alloy:Mubisanzwe birimo 25% Cr hamwe na molybdenum na azote, rimwe na rimwe umuringa na tungsten.Uhagarariwe na UNS S32550 (25Cr-6Ni-3Mo-2Cu-0.2N), hamwe na PREN ya 38-39, iki cyuma gifite imbaraga zo kurwanya ruswa kurusha 22% Cr DSS.
4. Super Duplex Ibyuma:Harimo urugero rwinshi rwa molybdenum na azote, ihagarariwe na UNS S32750 (25Cr-7Ni-3.7Mo-0.3N), rimwe na rimwe ikaba irimo na tungsten n'umuringa, hamwe na PREN iri hejuru ya 40. Birakwiriye ko habaho itangazamakuru rikaze, ritanga ruswa nziza na mashini. imitungo, igereranywa na super austenitike idafite ibyuma.
Impamyabumenyi ya Duplex Ibyuma bitagira umuyonga mubushinwa
Igishinwa gishya gisanzwe GB / T 20878-2007 "Ibyuma bitagira umuyonga kandi bishyuha kandi bigahindura imiti" birimo amanota menshi ya DSS, nka 14Cr18Ni11Si4AlTi, 022Cr19Ni5Mo3Si2N, na 12Cr21Ni5Ti.Byongeye kandi, ibyuma bizwi cyane 2205 duplex bihuye nu gishinwa 022Cr23Ni5Mo3N.
Ibiranga ibyuma bya Duplex
Bitewe nuburyo bubiri bwibice, mugucunga neza imiterere yimiti nuburyo bwo gutunganya ubushyuhe, DSS ikomatanya ibyiza byibyuma bya ferritic na austenitike.Iragwa ubukana buhebuje no gusudira ibyuma bya austenitike bitagira umuyonga hamwe nimbaraga nyinshi hamwe na chloride stress yo kwangirika kwangirika kwicyuma cya ferritic.Iyi mico isumba iyindi yatumye DSS itera imbere byihuse nkibikoresho byo gusudira kuva mu myaka ya za 1980, bigereranywa na martensitike, austenitis, na ferritic ibyuma bitagira umwanda.DSS ifite ibintu bikurikira:
1. Kurwanya Chloride Kurwanya Ruswa:Molybdenum irimo DSS yerekana uburyo bwiza bwo kurwanya chloride yangirika kurwego rwo hasi.Mugihe ibyuma 18-8 bya austenitike bitagira umuyonga bikunda guhura nibibazo byo kwangirika kwangirika mubisubizo bya chloride bitagira aho bibogamiye hejuru ya 60 ° C, DSS ikora neza mubidukikije birimo urugero rwa chloride na hydrogène sulfide, bigatuma bikwiranye noguhindura ubushyuhe hamwe na moteri.
2. Kurwanya ruswa:DSS ifite uburyo bwiza bwo kurwanya ruswa.Hamwe na Piting Resistance imwe ihwanye (PRE = Cr% + 3.3Mo% + 16N%), DSS hamwe nicyuma cya austenitis cyerekana ibyuma bisa nkibishobora gukomera.Kurwanya ruswa ya DSS hamwe na crevice birwanya ruswa, cyane cyane muri chromium nyinshi, ubwoko bwa azote, burenze ubwa AISI 316L.
3. Umunaniro wo kwangirika no kwambara Kurwanya ruswa:DSS ikora neza mubidukikije bimwe na bimwe byangirika, bigatuma ibera pompe, valve, nibindi bikoresho byamashanyarazi.
4. Ibikoresho bya mashini:DSS ifite imbaraga nyinshi numunaniro, hamwe nimbaraga zitanga umusaruro wikubye kabiri 18-8 ibyuma bya austenitike.Mubisubizo bifatanyirijwe hamwe, kuramba bigera kuri 25%, naho agaciro kayo AK (V-notch) karenga 100 J.
5. Gusudira:DSS ifite gusudira neza hamwe nubushyuhe buke bwo guturika.Gushyushya muri rusange ntibisabwa mbere yo gusudira, kandi kuvura ubushyuhe nyuma yo gusudira ntabwo ari ngombwa, bituma gusudira hamwe na 18-8 austenitike idafite ibyuma cyangwa ibyuma bya karubone.
6. Akazi gashyushye:Chromium-18 (CrChromium nyinshi (25% Cr) DSS iragoye gato kubikorwa bishyushye ariko birashobora gukorerwa mubisahani, imiyoboro, ninsinga.
7. Gukora ubukonje:DSS yerekana akazi gakomeye mugihe gikonje kirenze 18-8 ibyuma bitagira umuyonga wa austenitis, bisaba guhangayikishwa cyane no guhinduka mugihe cyo gukora imiyoboro hamwe nisahani.
8. Imyitwarire yubushyuhe no kwaguka:DSS ifite ubushyuhe bwumuriro mwinshi hamwe na coefficient zo kwagura ubushyuhe buke ugereranije nicyuma cya austenitike kitagira umuyonga, bigatuma gikoreshwa mubikoresho byo gutondekanya no gukora plaque.Nibyiza kandi guhinduranya ubushyuhe bwa cores, hamwe nubushyuhe bwo guhanahana ubushyuhe burenze ibyuma bya austenitis.
9. Ubupfura:DSS igumana ubushake buke bwa chromium ferritic ibyuma bidafite ingese kandi ntibikwiriye gukoreshwa mubushyuhe buri hejuru ya 300 ° C.Hasi ya chromium iri muri DSS, ntibikunze kugaragara ni ugucamo ibice nka sigma icyiciro.
Ibyiza bya Womic Steel
Womic Steel niyambere ikora uruganda rwa duplex idafite ibyuma, itanga ibicuruzwa byinshi birimo imiyoboro, amasahani, utubari, ninsinga.Ibicuruzwa byacu byubahiriza amahame mpuzamahanga kandi ni ISO, CE, na API byemewe.Turashobora kwakira abandi bantu kugenzura no kugenzura kwa nyuma, tukareba niba ubuziranenge bwujuje ubuziranenge.
Womic Steel's duplex ibyuma bidafite ibyuma bizwi kubyo:
Ibikoresho byiza byo mu rwego rwo hejuru:Dukoresha ibikoresho byiza gusa kugirango tumenye neza ibicuruzwa byiza.
Ubuhanga buhanitse bwo gukora:Ibikorwa byacu bigezweho byo gukora hamwe nitsinda ryinararibonye bidushoboza gukora ibyuma bya duplex bitagira ibyuma bifite ibihimbano byimiti hamwe nubukanishi.
Ibisubizo byihariye:Dutanga intera nini yubunini nibisobanuro kugirango duhuze ibyifuzo byabakiriya bacu.
Igenzura rikomeye:Ibikorwa byacu bikomeye byo kugenzura ubuziranenge byemeza ko ibicuruzwa byose byujuje ubuziranenge bwo hejuru.
Kugera ku Isi:Hamwe numuyoboro ukomeye wohereza ibicuruzwa hanze, Womic Steel itanga duplex ibyuma bidafite ibyuma kubakiriya kwisi yose, ifasha inganda zitandukanye hamwe nibikoresho byizewe kandi bikora neza.
Hitamo Womic Steel kubintu bya duplex yawe idafite ibyuma kandi wibonere ubuziranenge na serivisi bitagereranywa bidutandukanya muruganda.
Igihe cyo kohereza: Nyakanga-29-2024