Phapang ke efe pakeng tsa SS 329 le SS316?

Papiso e qaqileng ea SAKYSTEEL

Litšepe tse sa ruseng lia hlokahala indastering ea sejoale-joale, ho tloha lifemeng tsa lik'hemik'hale le kaho ea likepe ho ea lits'ebetsong tsa oli le khase. Har'a mefuta e mengata e fumanehang,SS 316leSS 329ke thepa e 'meli e sebelisoang haholo e atisang ho baka pherekano har'a bareki le baenjiniere. Ka bobeli li tsebahala ka bokhabane ba tsonakhanyetso ea ts'enyehoempa li fapane haholo hosebopeho se senyenyane, thepa ea mechini, le ts'ebetso.

Sehlooho sena, se lokisitsoeng keSAKYSTELE, mofani oa lefats'e oa tšepe e sa ruseng, o hlalosa ka botlalophapang pakeng tsa SS 329 le SS316, e akaretsang metsoako ea tsona ea lik'hemik'hale, ho hanyetsa mafome, matla le lits'ebetso tse loketseng. Ho utloisisa liphapang tsena ho thusa baenjiniere le litsebi tsa ho reka ho etsa khetho e nepahetseng ea thepa bakeng sa libaka tse itseng tsa mosebetsi.

1. Kakaretso ea Tšepe e sa Khaotseng ea SS316

SS316, e tsejoang hape e leAISI 316 or UNS S31600, ketšepe e sa hloekang ea austeniticKe karolo ea lelapa la letoto la 300 'me e sebelisoa haholo ka lebaka lakhanyetso e ntle ea ts'enyeho, sebopeho se setlelebonolo ba ho tjheseletsa.

Karolo e hlalosang ea SS316 kemolybdenum (2–3%), e ntlafatsang ho hanyetsaho bola ha sekoti le mapetso, haholo-holo libakeng tse nang le chloride tse kang metsi a leoatle. SS316 hangata e bitsoa “tšepe e sa hloekang ea boleng ba leoatle,” le hoja ho hanyetsa ha yona metsi a letswai ho le mahareng ha ho bapiswa le maemo a duplex.

Ha e na makenete boemong ba ho koaheloa 'me e boloka ho tiea esita le mochesong o batang, e leng se etsang hore e be thepa e feto-fetohang le e tšepahalang bakeng sa lik'hemik'hale, lijo le liindasteri tsa leoatle.

2. Kakaretso ea Tšepe e sa Khaotseng ea SS329

SS329kapaUNS S32900, ketšepe e sa hloekang ea duplex, ho bolelang hore e na le motsoako o leka-lekaneng oaaustenite (γ)leferrite (α)Sebopeho sena sa mekhahlelo e 'meli se fa SS329 motsoako o ikhethang oamatla a phahamenglekhanyetso e ntle ea ts'enyehohaholo-holo khahlanong leho petsoha ha mafome a khatello ea chloride (SCC).

Ka chromium e phahameng (≈25%) le nickel e tlase (≈4%) ​​ha e bapisoa le SS316, SS329 e ka sebetsa libakeng tseo litšepe tse tloaelehileng tsa austenitic tse sa hloekang tse kang 316L li ka 'nang tsa hloleha.

E sebelisoa hangata hoLiforomo tsa leoatleng, lifeme tsa ho ntša letsoai letsoai, liphaephe tsa mocheso le liphaephe tse nang le khatello e phahameng, moo matla a mechini le ts'ebetso ea ho bola li leng bohlokoa.

3. Liphapang tsa Sebopeho sa Lik'hemik'hale

Tekanyo ea lik'hemik'hale e hlalosa hore na tšepe e 'ngoe le e 'ngoe e sebetsa joang. Ka tlase ke karohano e nolofalitsoeng (ntle le tafole, joalo ka ha ho kopuoa):

• Sebopeho sa SS316:16–18% Chromium, 10–14% Nickel, 2–3% Molybdenum, ka bongata bo bonyenyane ba Manganese, Silicon le Carbon (<0.08%).

• Sebopeho sa SS329:23–28% Chromium, 2.5–5% Nickel, ho fihlela ho 1.5% Molybdenum, le karoloana e nyane ea naetrojene ho tsitsisa sebopeho sa duplex.

Ntlha ea Bohlokoa:

• SS329 e na lechromium e phahameng hahololenikeli e nyane, e e fa tšireletso e matla ea ho bola le matla a ho hlahisa chai e ngata.

• SS316, ka nickel le molybdenum ea eona e phahameng, e feta moo.e ductile le e ka thehoang, e loketse dibopeho tse rarahaneng le diphetho tse bentšitsoeng.

4. Papiso ea Sebopeho sa Micro

Phapang e kholo lipakeng tsaSS329 le SS316e robetse ho bonasebopeho se senyenyane:

• SS316e feletsengaustenitic, ho bolelang hore sebopeho sa yona sa kristale se shebane le sefahleho (FCC). Sena se e fa matla a maholo, thepa e seng ya makenete, le bokgoni bo botle ba ho tjheseletsa.

• SS329 is duplex, e entsoe ka hoo e ka bang 50% ea ferrite le 50% ea austenite. Sebopeho sa ferritic (khubiki e bohareng ba 'mele) se eketsamatla le k'holeseterole e hanyetsang ho petsoha, ha karolo ea austenitic e bolokaho se sebetse hantle.

Ka lebaka lena, SS329 e batla e le haufimatla a mabeli ho fetae le SS316 empa ha ho bonolo ho e bopa le ho e kenya mochineng.

5. Thepa ea Mekaniki

Phapang ea mechine e bohlokoa:

• Matla a Tlhahiso:SS316 ≈ 205 MPa, SS329 ≈ 450 MPa

• Matla a tšepe:SS316 ≈ 515 MPa, SS329 ≈ 620 MPa

• Ho lelefatsa:SS316 ≈ 40%, SS329 ≈ 25%

Hona ho bolelaSS329e fana ka bokgoni bo phahameng ba ho jara mojaro le ho hanyetsa mokhathala, e leng se etsang hore e be ntle bakeng salikepe tsa khatello le likarolo tse lebōpong la leoatle. SS316Ka lehlakoreng le leng, e fana ka ho tenyetseha ho hoholo, qetello e betere ya bokaholimo, le ho sebetsa ka serame habonolo bakeng sa dikopo tsa mekhabiso kapa tse nang le kgatello e tlase.

6. Papiso ea ho Hanela ho Silafala ha Mafome

Lihlopha tsena ka bobeli li hanela mafome, empa holibaka tse fapaneng:

a) Tšilafalo ea Khatello ea Chloride

• SS316 e ka petsoha ha e pepesehetse chloride nako e telele mochesong o phahameng.

• SS329 e hanela ho petsoha ha mafome a khatello ea chloride, e leng se etsang hore e lokele ho sebelisoatshebediso ya metsi a lewatle le a metsi a belang.

b) Ho tjhesa ha Likoti le Mapetso

• Molybdenum ea SS316 e ntlafatsa ho hanyetsa ho koaleha ha lesoba, empa e ntlafatsa feela ho fihlela maemong a mahareng a chloride (≈300 ppm).

• SS329 e sebetsa hantle esita le maemong a phahameng a chloride ka lebaka la chromium le duplex phase ea eona e phahameng.

c) Khanyetso ea asiti

• SS316 e ntle bakeng sa li-acid tse kang acetic, phosphoric, le sulfuric (dilute).

• SS329 e sebetsana hantle le li-acid tse oxidating le li-alkali, haholo-holo maemong a tsoakiloeng a chloride-acid.

d) Tshenyo ya di-intergranular

• Ka bobeli lia hanyetsana ha li phekoloa ka mocheso hantle. Leha ho le joalo, SS329 e tlameha ho sebetsoa ka hloko ho thibelaho thehoa ha karolo ea sigmaseo se ka fokotsa ho tiea.

Ka bokhutšoane:
Bakeng satshebediso ya lewatle kapa ya dikhemikhale, SS316 e sebetsa hantle maemong a mahareng a chloride, haSS329 ke khetho e ntle ka ho fetisisabakeng salebōpong la leoatle kapa ho tlosa letsoai le letsoaitikoloho.

7. Ho tjheseletsa le ho Etsa

Ho wellisa SS316 ho otlolohile ka mekhoa eohle ea setso (TIG, MIG, SMAW), 'me kalafo ea mocheso ka mor'a ho wellisa ha e hlokehe hangata.

SS329, kaha ke duplex, e hlokataolo e nepahetseng haholoanyane ea mochesonakong ea ho tjheseletsa ho boloka botsitso ba mokhahlelo oa eona. Ho kenella mochesong o feteletseng ho ka lebisa mekhahlelong e robehang habonolo e fokotsang ho hanyetsa mafome. Ho sebelisa litšepe tse lekanang le likhase tse sireletsang hantle ho bohlokoa.

Ha ho tluoa tabeng eaho theha le ho sebetsa ka machining:

• SS316 e bonolo ho e koba, ho e phutha le ho e bentsha.

• Matla a phahameng a SS329 a etsa hore ho be thata ho e bopa empa a loketse meaho e tiileng.

8. Khanyetso ea Mocheso

SS316 e boloka matla a eona le khanyetso ea mafome ho fihlela hoo e ka bang870°C (1600°F)tšebeletsong e tsoelang pele.

SS329, leha e le matla mochesong oa kamore, e ka 'na ea theha mekhahlelo ea ho fokola habonolo haeba e pepesehetse mocheso o phahameng o telele (ka holimo ho 300°C). Leha ho le joalo, e sebetsa hantle haholomocheso o maharengtikoloho e tlas'a khatello ea mechine le ho pepesehela chloride.

Ka hona, SS316 e kgethwa bakeng satšebeletso ea mocheso o phahameng, athe SS329 e loketse bakeng satikoloho e nang le kgatello e phahameng, mocheso o mahareng, le e senyang.

9. Litšenyehelo le Boteng ba tsona

Ka kakaretso,SS329 e theko e boima haholoho feta SS316 ka lebaka la ts'ebetso ea eona e rarahaneng ea tlhahiso le litlhoko tse laoloang tsa kalafo ea mocheso. Leha ho le joalo, e fana kabophelo ba tšebeletso e telele le litšenyehelo tse tlase tsa tlhokomelolibakeng tse mabifi, e leng se etsang hore e be theko e tlase ha nako e ntse e ea.

SS316 e fumaneha haholo ebile e hlahisoa lefatšeng ka bophara, e leng se etsang hore e bekhetho e tloaelehileng le e theko e tlasebakeng sa tšebeliso ea morero o akaretsang.

Haeba projeke ea hau e kenyelletsaliphaephe tsa metsi a leoatle, litanka tsa lik'hemik'hale, kapa lirifi tsa oli, ho tsetela ho SS329 ho tla boloka ditjeo tsa tlhokomelo nakong e tlang.lisebelisoa tsa kichine, liphanele tsa meralo, kapa tšebeliso e bobebe ea likepe, SS316 e ntse e le khetho e sebetsang le e theko e tlase.

10. Litšebeliso tsa SS316

SS316 e fumaneha hoo e ka bang indastering e 'ngoe le e 'ngoe ka lebaka la ho leka-lekana ha eona ha ho hanyetsa mafome, ho sebetsa hantle le botle. Litšebeliso tse tloaelehileng li kenyelletsa:

• Lisebelisoa tsa likepe le li-fasteners

• Lijo le lisebelisoa tsa lino

• Mekhoa ea lik'hemik'hale le ea meriana

• Li-exchange tsa mocheso le li-evaporator

• Mabota a meralo le litšepe tsa meralo

• Lisebelisoa tsa bongaka le lisebelisoa tsa ho buoa

Qetello ea eona e khanyang le sebopeho sa eona li etsa hore e ratoe haholo-holo liindastering tse batlang bobelimosebetsi le ponahalo.

11. Litšebeliso tsa SS329

Ka lebaka la matla a eona le ho hanyetsa mafome maemong a mabifi,SS329e khethoa ho:

• Liphaephe tsa oli le khase tse lebōpong la leoatle

• Limela tsa ho ntša letsoai le litsamaiso tsa metsi a leoatle

• Lisebelisoa tsa ho sila makhasi le pampiri

• Litanka tsa ts'ebetso ea lik'hemik'hale

• Li-exchange tsa mocheso tse pepesehetseng litharollo tsa chloride

• Likarolo tsa sebopeho lipolaneteng tsa leoatleng

Sebopeho sa eona sa duplex se netefatsamatla a phahameng a mechiniesita le tlas'a meroalo e matla le ho feto-fetoha ha khatello.

12. Kakaretso ea Tshebetso

SS316:

• Mofuta: Austenitic

• Matla: E itekanetseng

• Ho Hanela Tshenyo: E Hlollang (di-chloride tse mahareng)

• Sebopeho: E ntle haholo

• Ho tjheseletsa: Ho bonolo

• Tšebeliso e Tloaelehileng: Lijo, lik'hemik'hale, meralo ea meaho, likepe tse bobebe

SS329:

• Mofuta: Duplex

• Matla: Holimo haholo

• Ho Hanela Tshenyo: E Phahameng (dikloride tse ngata, metsi a lewatle)

• Sebopeho: E itekanetseng

• Ho tjheseletsa: Ho hloka taolo

• Tšebeliso e Tloaelehileng: Oli le khase, lebōpong la leoatle, ho tlosa letsoai le letsoai, indasteri

Ka bokhutšoanyane, phapang ea bohlokoa pakeng tsa SS316 le SS329 keho leka-lekana pakeng tsa matla le ho hanyetsa mafome. SS329 e fana ka khanyetso e kholoanyane ea mechine le chloride, ha SS316 e fana ka sebopeho se betere le botsitso ba mocheso.

13. Ho Khetha Pakeng tsa SS329 le SS316

Ho khetha tšepe e sa ruseng e nepahetseng ho latela maemo a ts'ebetso:

• Haeba matla le k'holeseterole e le tsona lintho tsa bohlokoa, khethaSS329.

• Haeba bonolo ba tlhahiso le qetello ea bokaholimo li bohlokoa haholoanyane, khethaSS316.

• Bakeng sadimela tsa dikhemikhale, ditsamaiso tsa ho ntsha letswai, kapa ho pepesehela metsi a lewatle, SS329 e molemo.

• Bakeng salisebelisoa tsa kichine, likarolo tsa meralo, kapa lits'ebetso tsa lik'hemik'hale tse nang le chloride e tlase, SS316 e lekane.

Ho sebetsa le mofani ea nang le tsebo ho thusa ho netefatsa khetho e nepahetseng ea thepa, mekhoa e nepahetseng ea ho tjheseletsa le boleng bo tsitsitseng.

14. Hobaneng Khetha SAKYSTEEL bakeng sa Duplex le Austenitic Stainless Steels

Jwalo ka moetsi le morekisi wa tshepe e sa ruseng ya nang le boiphihlelo,SAKYSTELEe fana ka bobeliSS316leSS329ka dibopeho tse kang dibara tse chitja, dipoleiti, maqephe le diphaephe.

Re fana ka:

• Thepa e netefalitsoeng (EN 10204 3.1 / 3.2)

• Ho latela melao ea NACE MR0175 le ISO 15156 bakeng sa tšebeletso ea oli le khase

• Machining e nepahetseng le bolelele bo ikhethileng

• Phano e potlakileng ea lefats'e ka bophara le tšehetso ea tekheniki

Lihlahisoa tsa rona li sebelisoa haholo indastering ea likepe, ea peterole le ea kaho ho pholletsa le Europe, Bochabela bo Hare le Asia Boroa-bochabela.

Bakeng sa projeke e 'ngoe le e 'ngoe,SAKYSTELEe netefatsa tlhahlobo e tiileng ea boleng, ho latelwa ho tšepahalang, le ho paka thepa kantle ho naha ka profeshenale.

15. Mehopolo ea ho Qetela

Phapang pakeng tsaSS 329 le SS316e atoloha hole ka khemistri - e hlalosa tsa bonatshebetso, ho tšoarella, le sebaka sa tshebediso. SS316 e ntse e le mosebetsi o boima indastering bakeng sa likarolo tse sa senyeheng ke mafome, tse entsoeng habonolo, ha SS329 e emela boemo bo latelang ba matla le botshepehi maemong a thata.

Ho utloisisa liphapang tsena ho lumella baenjiniere le bareki ho khetha motsoako o nepahetseng bakeng sa mosebetsi o nepahetseng - ho fokotsa tlhokomelo, ho eketsa nako e telele, le ho netefatsa polokeho tlas'a maemo a thata.

Ha o batla thepa ea tšepe e sa ruseng, khetha bafepedi ba nang le boiphihlelo bo pakiloeng le netefatso ea boleng bo netefalitsoeng.SAKYSTELEbakeng sa litšepe tse sa hloekang tse tsitsitseng, tse sebetsang hantle tse fihlelang maemo a lefats'e le tse fetang litebello tsa hau.