S31803 Duplex Stainless Steel: Khanyetso e Phahameng ea Corrosion le Matla a Phahameng a Likopo tsa Indasteri.

S31803, eo hape e tsejoang ka hore ke Duplex 2205 kapa F60, ke boemo bo nkoang e le ba boleng bo holimo ba tšepe e sa hloekang ea duplex 'marakeng oa lefatše. E amohetsoe tlasa Unified Numbering System (UNS), thepa ena e ratoa ka lebaka la ho hanyetsa ha eona ho hoholo, matla a holimo a mochini, le ts'ebetso e fapaneng maemong a thata.

Sebopeho sa Lik'hemik'hale Tsa Sehlooho le Sebopeho

S31803 duplex stainless steel e na le motsoako o leka-lekaneng oa likarolo tsa alloying tse fanang ka thepa ea eona e ikhethang:

• Chromium (Cr):Hoo e ka bang 22% - E matlafatsa khanyetso ea kutu, haholo-holo khahlano le likoti le maphao.

• Nickel (Ntho):Hoo e ka bang 5.0-6.0% - E ntlafatsa ho thatafala le ductility.

• Molybdenum (Mo):Hoo e ka bang 3.0% - E matlafatsa khanyetso ho kutu ea lehae, haholo-holo libakeng tse nang le chloride e ngata.

• Nitrojene (N):Hoo e ka bang 0.18% - E eketsa matla le ho kenya letsoho khatellong ea khatello ea maikutlo.

Mohaho o ikhethang oa mekhahlelo e 'meli, o kopanyang mekhahlelo ea ferritic le ea austenitic, o fella ka thepa ea mochine e batlang e imena habeli ea litšepe tse tloaelehileng tsa austenitic ha li ntse li boloka ductility le boima bo botle.

Thepa e Hlollang le Melemo

Khahlano e Eketsehileng ea Corrosion

S31803 e ipabola ho hanela mefuta e fapaneng ea kutu, ho kenyelletsa:

• Pitting le Crevice Corrosion:Lintho tsa eona tse phahameng tsa chromium le molybdenum li e lumella ho sebetsa ka mokhoa o ikhethang tikolohong ea chloride.

• Stress Corrosion Cracking:Sebopeho sa duplex se fana ka khanyetso e eketsehileng ea ho senya tlas'a khatello ea kelello, esita le ha e pepesehetse mecha ea litaba e mabifi.

Matla a Phahameng a Mechini

• Matla a Matla a Phahameng:Ka tloaelo, matla a matla a S31803 a feta 500 MPa, e leng se etsang hore e be se loketseng bakeng sa lisebelisoa tse phahameng tsa khatello.

• Matla a Ntlafetseng:The microstructure e leka-lekaneng ha e matlafatse matla feela empa e boetse e tiisa ho tiea le ho ts'epahalla, tse bohlokoa haholo maemong a matla a indasteri.

Ho Weldability e Ntle

Le hoja tlhokomelo e khethehileng e hlokahala nakong ea ho cheselletsa ho qoba ho senyeha sebakeng se amehileng ke mocheso, mekhoa e nepahetseng ea ho tjheseletsa le mekhoa ea phekolo ea post-weld e ka netefatsa manonyeletso a matla, a se nang sekoli. Sena se etsa hore S31803 e be khetho e sebetsang bakeng sa mosebetsi oa ho etsa le ho lokisa

Lisebelisoa tsa indasteri

S31803 duplex stainless steel e fumana ts'ebeliso e kholo liindastering tse fapaneng ka lebaka la motsoako oa eona o leka-lekaneng oa matla le ho hanyetsa kutu. Libaka tsa bohlokoa tsa kopo li kenyelletsa:

• Lisebelisoa tsa ho Etsa Lik'hemik'hale:E loketse li-reactors, litanka tsa polokelo, le lisebelisoa tsa lipeipi moo ho hanyetsanang le lik'hemik'hale tse mabifi ho hlokahalang.

• Indasteri ea Oli le Khase:E sebelisoa haholo liphaepheng, li-valve le li-fittings, haholo-holo tlas'a khatello e phahameng le maemo a phahameng a chloride.

• Boenjiniere ba Metsing le Kaho ea Likepe:Ho hanyetsa ha eona ho bola ha metsi a letsoai ho etsa hore e tšoanelehe bakeng sa meaho e kantle ho naha, lisebelisoa tsa metsing le lits'ebetso tse ling tsa metsing.

• Lisebelisoa tsa Tlhahiso ea Matla:Ho hiroa lifemeng tsa motlakase le litsing tsa nyutlelie moo bots'epehi ba sebopeho le ts'ebetso ea nako e telele e leng bohlokoa.

• Likarolo tsa Kaho le Mehaho:Qetello ea eona e khahlehang le ho tšoarella ha eona li lebisitse tšebelisong ea eona meahong ea sejoale-joale ea meaho le lits'ebetso tse ntle

   

Ho lumellana le Melao ea Machaba

S31803 duplex stainless steel e lumellana le litekanyetso tse 'maloa tsa bohlokoa tsa machaba le tsa naha, ho netefatsa ho tšepahala le boleng ba eona. Ka mohlala:

• ASME B16.11:E totobatsa ts'ebeliso ea eona ha ho etsoa socket weld le li-fittings tsa liphaephe tse kentsoeng.

• ASTM A240/A240M:E fana ka tataiso bakeng sa lipoleiti tsa tšepe tse sa hloekang tse sebelisoang lits'ebetsong tse fapaneng.

• EN 10088-2:Lintlha tse hlokahalang bakeng sa lihlahisoa tsa tšepe tse sa hloekang Europe.

Ho latela melao e thata ho tiisa hore S31803 e fihlela litlhoko tsa lits'ebetso tsa bohlokoa lefats'eng ka bophara.

Qetello

S31803 duplex stainless steel e hlahella e le thepa e feto-fetohang le e matla e loketseng maemo a thata a indasteri. Motsoako oa eona o motle haholo oa matla a phahameng, ho hanyetsa kutu e phahameng, le ho cheseha ho ka tšeptjoang ho etsa hore e be khetho e holimo ho pholletsa le likarolo tse kang ts'ebetso ea lik'hemik'hale, oli le khase, boenjiniere ba likepe, tlhahiso ea matla le kaho. Ha liindasteri li ntse li tsoela pele ho hatella meeli ea ts'ebetso le ho tšoarella, S31803 e ntse e le thepa e ratoang e fanang ka boleng bo sa feleng le polokeho.

Bakeng sa lintlha tse qaqileng haholoanyane tsa tekheniki le litharollo tse ikhethileng, litsebi tsa indasteri li khothaletsoa ho sheba lipampiri tsa thepa le ho ikopanya le barekisi ba tšepahalang.

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