Indasteri ea lifofane ke e 'ngoe ea libaka tse hlokang tlhokomelo e kholo bakeng sa ts'ebetso ea thepa. Lifofane, lifofa-sebakeng le likarolo tsa enjene li lula li pepesehetse maemo a feteletseng - khatello e phahameng, liphetoho tse potlakileng tsa mocheso, ho thothomela le ho bola. Ho netefatsa polokeho le ts'epo ea nako e telele, thepa e tlameha ho kopanamatla a phahameng, boima bo tlase, ho hanyetsa mafome, le botsitso mochesong o phahameng.
Har'a li-alloy tse ngata tse tsoetseng pele tse sebelisoang lifofaneng,Tšepe e sa ruseng ea 15-7PHe fumane sebaka se ikhethang. E tsebahala ka thepa ea eona e ikhethang ea mechini le ho tenyetseha ha eona, e ntse e le thepa ea bohlokoa bakeng samehaho ea lifofane, liliba, li-bellow, li-fasteners le likarolo tsa turbine.
Sehloohong sena,SAKYSTELEhlalosaHobaneng tšepe e sa hloekang ea 15-7PH e sebelisoa haholo lits'ebetsong tsa lifofane, ho hlahloba sebopeho sa eona, thepa, melemo ea ts'ebetso, le rekoto e pakiloeng indastering.
1. Tšepe e sa Khaotseng ea 15-7PH ke Eng?
Tšepe e sa ruseng ea 15-7PH(UNS S17700, e tsejoang hape e le Mofuta oa 631) ketšepe e sa hloekang ea martensitic ea ho thatafatsa pula (PH)"15-7" e bua ka sebopeho sa yona: hoo e ka bang15% chromium le 7% nickel, ha “PH” e bontša hore e fumana matla a eona kaho thatafatsa pula— kalafo ea mocheso e etsang metsoako e metle ea intermetallic (haholo-holo Ni₃Al) ho eketsa ho tiea le ho fana ka matla.
Motsoako ona o ntlafalitsoe e le ntlafatso ho feta 17-7PH, o fana kamatla a phahameng le botsitso bo betere ba mochesontle le ho fokotsa ho hanyetsa mafome. E fa baenjiniere monyetla oa hotheha dibopeho tse rarahaneng boemong bo bonolo (tse annealed)le hamoraothatafatsa likarolo ka kalafo ea mochesoho fihlela matla a phahameng haholo.
2. Sebopeho sa Lik'hemik'hale
| Karolo | Dikahare (%) | Morero |
|---|---|---|
| Chromium (Cr) | 14.0 – 16.0 | Ho hanyetsa ts'enyeho le ho thatafala |
| Nikele (Ni) | 6.5 – 7.8 | Bokgoni le ho tiea |
| Aluminium (Al) | 0.75 – 1.5 | Karolo ea ho tiisa pula |
| Khabone (C) | ≤ 0.09 | E laola matla le ho tiea |
| Manganese (Mn) | ≤ 1.00 | E ntlafatsa matla |
| Silicone (Si) | ≤ 1.00 | E eketsa khanyetso ea oxidation |
| Fosforase (P) | ≤ 0.04 | E laoloa bakeng sa ho se sebetse hantle |
| Sebabole (S) | ≤ 0.03 | E ntlafatsa bokgoni ba ho sebetsa |
| Tšepe (Fe) | Tekanyo | Tšepe ea motheo |
Khemistri ena e ikhethang e nolofalletsa 15-7PH ho fihlelamatla a phahameng haholo (ho fihlela ho 1500 MPa)ha e ntse e boloka ho hanyetsa mafome hantle le ts'ebetso e ntle ea mokhathala.
3. Hobaneng Baenjiniere ba Lifofane ba Khetha 15-7PH
Baenjiniere ba lifofane ba hloka thepa e kamamella maemo a feteletseng ha ka nako e ts'oanang ho fokotsa boima le tlhokomelo. 15-7PH e fihlela litlhoko tsena hobane e fana ka motsoako o sa tloaelehang oa thepa eo li-alloy tse fokolang li ka e bapisang:
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Karolelano e phahameng ea matla ho ea boima
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Ho hanyetsa mokhathala hantle haholo
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Ho hanyetsa mafome hantle libakeng tsa lifofane
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Botsitso bo ikhethang ba tekanyo kamora kalafo ea mocheso
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Bokhoni ba ho sebetsa ho fihlela ho 550°C (1020°F)
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Ho bonolo ho bopa, ho sebetsa le ho phekola ka mocheso
Likarolo tsena li etsa hore 15-7PH e be e 'ngoe ea litšepe tse sa hloekang tse feto-fetohang ka ho fetisisa tse sebelisoang likarolong tsa bohlokoa tsa sefofane.
4. Matla a Phahameng le ho Tiea
Molemo o moholo oa 15-7PH ke bokhoni ba eona ba ho fihlellamatla a ikhethang a ho tsitlella le ho fana ka chaika kalafo ea mocheso. Kamora ho tiea ha pula (hangata boemo ba RH950 kapa TH1050), motsoako o ka finyella:
| Thepa | Boleng bo Tloaelehileng |
|---|---|
| Matla a tšepe | 1400–1600 MPa |
| Matla a Tekanyo | 1200–1450 MPa |
| Bothata | 42–48 HRC |
| Ho lelefatsa | 6–10% |
Matla a joalo a lumella baenjiniere horala likarolo tse bobebe ntle le ho tela bokhoni ba ho jara mojaro, molemo oa bohlokoa meahong ea lifofane moo ho fokotsa boima ba 'mele ho fetolelang ka ho toba ho ba le ts'ebetso e phahameng ea mafura le ts'ebetso.
5. Karolelano e Hlollang ea Matla ho ea ho Boima
Moralong oa lifofane, boima ke ntho ea bohlokoa ka ho fetisisa.bongata ba 15-7PHe haufi7.80 g/cm³, e ts'oanang le litšepe tse ling tse sa ruseng empa e fana ka matla a phahameng haholo. Sena se bolela hore likarolo li ka etsoae nyane ebile e tšesaane, ho fokotsa boima ka kakaretso.
Mohlala, sepori kapa diaphragm e entsoeng ka 15-7PH e ka jara mojaro o tšoanang le o entsoeng ka tšepe e sa hloekang ea setso empa e leBoima bo fokotsehile ka 30–40%Sena se etsa hore e be ea bohlokoa haholo litsamaisong tsa lifofane, moo k'hilograma e 'ngoe le e 'ngoe e bolokiloeng e eketsang bokhoni ba mojaro le ho fokotsa ho chesoa ha mafura.
6. Mokhathala o Phahameng le Khanyetso ea ho Kena
Likarolo tsa lifofane tse kang li-spring tsa lisebelisoa tsa ho lulisa, li-actuator le boiphihlelo ba li-fastenersho jara ka potoloho e phetoang khafetsa. Litheko tsa tšepe e sa ruseng ea 15-7PHkhanyetso e ikhethang ea mokhathala, ho boloka botšepehi ba mechini ho pholletsa le lipotoloho tse limilione tsa khatello ea maikutlo.
Ho feta moo,matla a ho hloa— bokgoni ba ho hanela phetoho tlasa kgatello e tswelang pele mochesong o phahameng — bo etsa hore e lokele dikarolo tsa turbine le tsa mosi tse sebetsang ho fihlela ho550°C (1020°F).
7. Botsitso ba Dimensional Nakong ea Phekolo ea Mocheso
Ho nepahala ho bohlokoa tlhahisong ea lifofane. Ho sotha leha e le hofe nakong ea kalafo ea mocheso ho ka lebisa ho ntlafatseng ho turang kapa ho lahloa ha likarolo. Lipontšo tsa tšepe e sa ruseng ea 15-7PHphetoho e nyane haholonakong ea botsofali, hangata e ka tlase ho 0.05%.
Botsitso bona bo netefatsa hore likarolo tse rarahaneng tse kangli-bellow, li-diaphragm le li-spring tse nepahetsengba boloka mamello ea bona ea moralo esita le ka mor'a ho tiea ha ho qetela. Baenjiniere ba ka itšetleha ka ts'ebetso e tsitsitseng ho pholletsa le lihlopha tse kholo tsa tlhahiso.
8. Khanyetso ea Matšeliso bakeng sa Tikoloho e Matla ea Lifofane
Lifofane le sefofa-sebakeng li sebetsa maemong ao thepa e tobanang le ho pepesehelamongobo, letsoai, mafura a jete, le maro a haeteroliki. Dikahare tse phahameng tsa chromium (14–16%) tsa 15-7PH di etsa alera la oxide le sireletsange thibelang mafome le ho senyeha ha dikoti.
Leha e se e hanelang mafome joalo ka limaraka tse felletseng tsa austenitic joalo ka 316, 15-7PH e sebetsa hantle haholo ho:
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Litsamaiso tsa hydraulic tsa lifofane
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Sistimi ea mafura
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Mekhoa ea lisebelisoa tsa ho lulisa
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Likopano tsa sebopeho sa airframe
Ho hanyetsa ha eona mafome ho ka ntlafatsoa haholoanyane kaho se tsotelleleho bentša bokaholimo, e leng mekgwa e tloaelehileng ya ho phethela sefofane.
9. Tshebetso e Hloahloa Lithempereichareng tse Phahameng le tse Tlase
15-7PH e boloka matla a eona a mechini le botsitso holim'amocheso o pharaletseng:
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E boloka matla a tlhahiso a le kaholimo ho 1000 MPa ho fihlela ho 550°C (1020°F)
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E boloka ho ductility e ntle le ho tiea ha mocheso o batang (ho fihlela ho -200°C)
Sena se etsa hore e lokele bobelilikarolo tsa enjene ea karolo e chesanglelitsamaiso tsa taolo ea cryogenic, e bonts'a ho tenyetseha ho sa bapisoeng le litšepe tse ling tse ngata tse sa hloekang.
10. Ho tenyetseha ha Kalafo ea Mocheso
E 'ngoe ea melemo e meholo ea 15-7PH ke hore e na lemaemo a mangata a kalafo ea mocheso, e lumellang baenjiniere ho etsa thepa e lumellanang hantle le litlhoko tsa ts'ebeliso.
| Boemo | Mocheso (°C) | Litšobotsi |
|---|---|---|
| A (E atolositsoeng) | 1038 | E bonolo ebile e ka hlomeha |
| RH950 | 510 | Matla a phahameng a nang le ductility e ntle |
| TH1050 | 565 | Matla le ho thatafala ho hoholo |
| RHT e Ikhethileng | 480–620 | Tekanyo e lokisitsoeng ea thepa |
Ho ikamahanya hona ho bolela hore motsoako o le mong o ka ntlafatsoa bakeng sa likarolo tse fapaneng - ho tloha ho li-bellow tse tenyetsehang ho isa ho li-fasteners tse tiileng tsa sebopeho - ho nolofatsa liketane tsa phepelo le tlhokomelo.
11. Tlhahiso le ho Sebetsa ha Mechini
Ka foromo ea eona e annealed (Boemo A), 15-7PH keho etsoa habonolo, ho etsoa ka mechini le ho kopanngoa, e tšoanang le 17-4PH. Kamora ho tsofala, e ba thata haholo empa e boloka taolo e ntle ea litekanyo. Bokhoni bona bo habeli bo loketse tlhahiso ea lifofane, moo ho hlokahalang li-geometri tse rarahaneng.
Ka mohlala:
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Ho theha:Li-diaphragm le li-bellow tsa sefofane li thehoa Boemong ba A, ebe li tsofala ho fihlela matla a ho qetela.
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Ho etsa mechini:Li-fasteners le li-shaft li etsoa ka mokhoa o nepahetseng boemong bo koetsoeng 'me li tsofala ho fihlela li thatafala hamorao.
Tatellano ena e fokotsa ho tsofala ha lisebelisoa 'me e netefatsa mamello e nepahetseng likarolong tse felileng.
12. Ho Hanela Kgatelelo ya Tshusumetso Ho Petsoha ha Mafome
Meaho ea lifofane hangata e sebetsa tlas'a meroalo e matla ea ho tsitlallela libakeng tse mongobo kapa tse tletseng letsoai, e leng se ka lebisang hoho petsoha ha khatello ea khatello ea maikutlo (SCC)ka har'a thepa e 'ngoe.
Lipontšo tsa 15-7PHKhanyetso e ntle ea SCClibakeng tse bobebe ka lebaka la sebopeho sa eona sa pula ea aluminium le matrix e tsitsitseng ea martensitic. Ho tsofala mochesong o itekanetseng (boemo ba RH950) ho fana ka tekano e ntle pakeng tsa matla le khanyetso ea SCC, ho netefatsa ts'epo ea nako e telele likarolong tsa bohlokoa tsa sefofane.
13. Litšebeliso tse Tloaelehileng tsa Lifofane tsa 15-7PH
13.1 Li-Spring tsa Lifofane le Li-Diaphragm
Matla a phahameng a mokhathala le botsitso bo boholo li etsa hore 15-7PH e be e phethahetseng bakeng salisepori, li-washer le li-diaphragmlitsamaisong tsa taolo ea lifofane, li-actuator le likopano tsa haeteroliki.
13.2 Li-Bellow le Manonyeletso a Tenyetsehang
Motsoako oa eona oa ho tenyetseha, ho hanyetsa mafome le matla a phahameng ka mor'a botsofali o e lumella ho sebetsamelumo ea katolosolelikhokahano tse tenyetsehang, e lokelang ho mamella ho thothomela le kgatello.
13.3 Li-fasteners le Lisebelisoa tsa Meaho
15-7PH e atisa ho sebelisoa bakeng saliboutu, linate, lipini le li-shafttse hlokang matla a phahameng le ho nepahala ha li jarisoa. Tlhaho ea eona ea ho se halefe e boetse e thibela ho tšoaroa nakong ea kopano le ho qhaqhoa.
13.4 Likarolo tsa Turbine le Enjene
Likarolo tse lienjineng tsa turbine, ho kenyeletsoali-retainer, liliba le li-compressor blades, e rua molemo matla a mocheso o phahameng a motsoako le khanyetso ea oxidation.
13.5 Mekhoa ea Lifofane tsa Sepakapaka le Sathelaete
Ka lebaka la ho kenella ha eona ha makenete ho tlase le matla a eona a phahameng, 15-7PH e loketse bakeng salikarolo le lihokelo tsa sathelaete tse seng tsa makenetetse hlokang bobebe le botsitso dibakeng tse se nang letho.
14. Papiso le Litšepe tse ling tsa Sefofane
| Thepa | 15-7PH | 17-4PH | 17-7PH |
|---|---|---|---|
| Karolo ea ho thatafatsa | Aluminium | Koporo | Aluminium |
| Mocheso o Phahameng oa Tšebeletso (°C) | 550 | 315 | 425 |
| Matla (MPa) | 1500+ | 1300 | 1250 |
| Khanyetso ea ts'enyeho | Ho lokile | Hantle haholo | Ho lokile |
| Sebopeho | E ntle haholo (e koahetsoeng) | E itekanetseng | E babatsehang |
| Khanyetso ea Mokhathala | E babatsehang | Ho lokile | Ho lokile |
Ha ho bapisoa le 17-4PH le 17-7PH,15-7PH e fana ka matla le bokgoni bo phahameng ba mocheso, e leng se etsang hore e lokele libaka tse chesang le tse feto-fetohang tsa lifofane.
15. Mohlala oa Nyeoe ea Lefatše la Sebele
Moetsi ea ka sehloohong oa lifofane o nkile sebaka sa 17-4PH ka 15-7PH bakeng saselemo sa actuator sa mocheso o phahameng.
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Seliba se secha se bolokile ho boloka mojaro ho fihlela ho 540°C,
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Phomolo e fokotsehileng tlas'a mojaro oa potoloho ka 25%,
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'Me bophelo ba tšebeletso bo ekelitsoe ka ho feta 50%.
Sena se bonts'a molemo oa 'nete oa ts'ebetso oa ho sebelisa 15-7PH lits'ebetsong tsa lifofane moo ts'ebetso le polokeho li ke keng tsa beoa kotsing.
16. Setifikeiti le Maemo
Tšepe e sa ruseng ea 15-7PHe hlahisoa le ho netefatsoa tlas'a maemo a thata a machaba ho fihlela litlhoko tsa lifofane:
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ASTM A693– Poleiti e sa ruseng e thatafatsang pula, lakane le sekwahelo
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AMS 5520 / AMS 5659– Litlhaloso tsa thepa ea lifofane
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UNS S17700– Sistimi e kopaneng ea linomoro
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EN 1.4532– Tlhophiso e lekanang le ea Europe
SAKYSTELEe fana ka dihlahiswa tsohle tsa 15-7PH tse nang le ho latelwa ka botlalo le disetifikeiti tsa EN 10204 3.1/3.2 ho netefatsa ho latela maemo a theko ya sefofane.
(Letšoao la SAKYSTEEL)
17. Sehlopha sa Lihlahisoa tsa SAKYSTEEL bakeng sa Lifofane
SAKYSTELEe fana ka khetho e felletseng ea tšepe e sa hloekang ea 15-7PH ho:
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Libara le Lithupa– Annealed, RH950, kapa TH1050
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Lipoleiti le Maqephe– Bakeng sa meaho ea lifofane le lisebelisoa
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Lithapo le Lithapo– Terata e nepahetseng ea selemo bakeng sa tšebeliso ea lifofane
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Li-Forging le Masale– Dibopeho tse ikgethileng bakeng sa dikarolo tsa turbine le actuator
Lihlahisoa tsa rona li sebelisoa ke bareki lefatšeng ka bophara holiindasteri tsa lifofane, tsa sepakapaka le tsa tšireletso, e tšehelitsoe ke boleng bo tsitsitseng le boiphihlelo ba botekgeniki.
18. Melemo ea ho Khetha 15-7PH ho tsoa ho SAKYSTEEL
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Bonnete ba Alloy bo Tiisitsoengka PMI e felletseng le ho latela palo ea mocheso
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Mekhoa e mengata ea kalafo ea mochesoe etselitsoe litlhoko tsa projeke
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Ho nepahala ha Tekanyo e Phahamengka ts'ebetso e nepahetseng
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Ho latela maemo a AMS, ASTM, le EN
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Phano e Potlakileng ea Lefatše ka Bopharae tšehetsoang ke boiphihlelo ba litsebi tsa ho romela kantle ho naha
Sehlopha se seng le se seng se phekoloa ka mocheso, se hlahlojoa, 'me se netefatsoa ho latela maemo a boleng ba sefofane.
19. Karolo ea Nakong e Tlang ea 15-7PH ho Ntlafatso ea Lifofane
Ha theknoloji ea lifofane e ntse e tsoela pele ho ea ho lifofane tse bobebe, tse bolokang mafura le litsamaiso tsa sepakapaka tse ka sebelisoang hape, tlhoko eathepa e matla haholo, e tsitsitseng mochesonge ntse e hola.
15-7PH e ntse e le motsoako o tšepahalang bakeng satlhahiso ea tlatsetso, li-actuator tse tsoetseng pele, le litsamaiso tsa turbine tse sebetsang hantle haholo, 'me lipatlisiso tse tsoelang pele li shebane le ho ntlafatsa ts'ebetso ea eona kaho qhibiliha ha vacuum le tšepe ea phofo.
20. Qetello
Katleho ea tšepe e sa hloekang ea 15-7PH lits'ebetsong tsa lifofane ha se ntho e etsahetseng ka tšohanyetso.matla a phahameng, ho hanyetsa mokhathala, botsitso ba mocheso, le tšireletso ea mafomee etse e 'ngoe ea thepa e tšepahalang ka ho fetisisa bakeng sa likarolo tsa bohlokoa tsa sefofane.
Ka ho fa baenjiniere tenyetseho kalafong ea mocheso le ho ba le sebopeho se setle pele ba tsofala, 15-7PH e lumella tlhahiso e sebetsang hantle ea likarolo tse rarahaneng le tse sebetsang hantle.
At SAKYSTELE, re motlotlo ho fana ka dihlahiswa tsa tshepe e sa ruseng tse nang le setifikeiti sa 15-7PH bakeng sa bareki ba difofane le ba tshireletso lefatsheng ka bophara — ho netefatsa maemo a hodimo a boleng, ho latelwa le tshebetso.
Nako ea poso: Mphalane-29-2025