Lefatšeng la thepa e tsoetseng pele ea boenjiniere,Tšepe e sa ruseng ea 15-7PHe hlahella e le e 'ngoe ea litšepe tse sa hloekang tse tenyetsehang ka ho fetisisa le tse matla haholo tse fumanehang kajeno. Bokhoni ba eona ba ho kopanyamatla a matle a mechini, ho hanyetsa mafome, le botsitso ba mochesoe etsa hore e be thepa e loketseng bakeng sa liindasteri tse hlokang botšepehi tlas'a maemo a feteletseng.
Sehloohong sena,SAKYSTELEe fana ka kakaretso e qaqileng eatšepe e sa hloekang ea 15-7PH ke eng, ke eonametsoako ea lik'hemik'hale, thepa ea bohlokoalelits'ebetso tse ka sehloohong tsa indasteri, ho thusa baenjiniere le litsebi tsa theko ho etsa liqeto tse nang le tsebo ha ba khetha thepa bakeng sa likarolo tse sebetsang hantle.
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 15-7 PH kapa motsoako oa 631) ketšepe e sa hloekang ea martensitic e thatafatsang pulae nang le hoo e ka bang15% chromium le 7% nickel, ka litlatsetso tsaaluminiumho nolofatsa ho thatafala ka kalafo ya mocheso.
“PH” lebitsong la yona e emetseHo thatafatsa pula, mokhoa oa ho phekola mocheso o ntlafatsang matla a mechini a motsoako ka ho nosetsa metsoako e metle ea intermetallic ka har'a sebopeho sa tšepe.
E ntlafalitsoe e le ntlafatso holim'a17-7PHle17-4PH, 15-7PH e fana ka tekanyo eamatla a phahameng, ho hanyetsa mafome, le ho ba le sebopeho se setle haholo, e leng se etsang hore e lokele bobelisefofaneleindasterilits'ebetso.
2. Sebopeho sa Lik'hemik'hale
Sebopeho sa lik'hemik'hale se laoloang ka hloko sa tšepe e sa ruseng ea 15-7PH ke senotlolo sa ts'ebetso ea eona e ikhethang.
| Karolo | Dikahare tse Tloaelehileng (%) | Mosebetsi |
|---|---|---|
| Chromium (Cr) | 14.0 – 16.0 | Ho hanyetsa ts'enyeho le ho thatafala |
| Nikele (Ni) | 6.5 – 7.8 | Ho tiea le botsitso ba matrix ea martensitic |
| Aluminium (Al) | 0.75 – 1.5 | Karolo ea ho tiisa pula |
| Khabone (C) | ≤ 0.09 | Matla ntle le ho fokotsa ho ductility |
| Manganese (Mn) | ≤ 1.0 | Deoxidizer le enhancer ea matla |
| Silicone (Si) | ≤ 1.0 | E ntlafatsa khanyetso ea oxidation |
| Fosforase (P) | ≤ 0.04 | E bolokiloe e le tlase ho qoba ho robeha ha bonolo |
| Sebabole (S) | ≤ 0.03 | E laoloa bakeng sa ho sebetsa ha mechini |
| Tšepe (Fe) | Tekanyo | Karolo ea motheo |
Sebopeho sena se dumella motswako ho fetoha ho tloha mohatong wa austenitic ho ya ho wa martensitic ka kalafo ya mocheso, e ka tsofatswang ho fumana matla le ho thatafala ho hoholo.
3. Sebopeho se senyenyane le Bongaka ba Tšepe
Boemong ba eona ba ho koaheloa ke tharollo, 15-7PH keaustenitic, ho bolelang hore e ka etsoa habonolo le ho etsoa. Kamoramosebetsi o batanglekalafo ea mocheso, e fetohamartensiticsebopeho, e leng se fanang ka matla a sona a phahameng a ikhethang.
Ha o tsofetse (hangata pakeng tsa 510–565°C),li-precipitate tse nang le aluminiumjoalo kaNi₃Alsebopeho ka hare ho matrix. Dikaroloana tsena tse arotsweng hantle di eketsa thatafalo haholo mme di fana ka matla, ha ka nako e ts'oanang di boloka ho tiea hantle le ho hanyetsa mafome.
4. Litšobotsi tsa Bohlokoa tsa Mekaniki
Tafole e latelang e akaretsa litšobotsi tse tloaelehileng tsa mechini tsa tšepe e sa hloekang ea 15-7PH maemong a fapaneng a kalafo ea mocheso:
| Boemo | Matla a Tlhahiso (MPa) | Matla a ho Tenyetseha (MPa) | Ho lelefatsa (%) | Boima (HRC) |
|---|---|---|---|---|
| Tharollo e Annealed (Boemo A) | 850 | 1050 | 15–20 | 25–30 |
| Boemo CH900 | 1300 | 1450 | 5–8 | 42–46 |
| Boemo RH950 | 1170 | 1300 | 8–12 | 40–44 |
Liphetho tsena li bonts'a bokhoni ba motsoako oa hoho fumana matla a phahameng haholo ka mor'a botsofali, hangata e bapisoa le litšepe tsa lisebelisoa tse nang le motsoako o tlase, empa ka melemo e eketsehileng eakhanyetso ea ts'enyehoe tloaelehileng ea limaraka tse sa hloekang.
5. Likarolo tsa Bohlokoa le Melemo
5.1 Matla a Phahameng le ho Tiea
Kamora ho tsofala, 15-7PH e hlahisa matla a tlhahiso a kaholimo ho feta1300 MPa, e leng se dumellang baqapi ho fokotsa botenya le boima ba karolo dikarolong tsa bohlokwa.
5.2 Khanyetso e Hlollang ea Ts'enyeho
Chromium e ngata e fana ka 15-7PH e hanyetsang hantle mafome a sepakapaka le tikoloho e bobebe ea lik'hemik'hale. E sebetsa hantleleoatlengleindasterisepakapaka, leha se sa haneloe ke mafome joalo ka maemo a ho inehela ka botlalo joaloka 316.
5.3 Sebopeho se Setle
Boemong ba eona bo annealed (A), thepa e kaho bopeha habonolo, ho huloa, kapa ho kobeha, e leng se etsang hore e lokele likarolo tse rarahaneng tse tla phekoloa ka mocheso hamorao bakeng sa matla a phahameng.
5.4 Mokhathala o Ikhethang le Khanyetso ea Khatello ea Kelello
Sebopeho se senyenyane se setle, se lekanang ka mora ho tsofala se fa 15-7PH matla a ikhethang a mokhathala le ho hanyetsa ho petsoha ha mafome a khatello, esita le tlas'a maemo a ho jara ka potoloho.
5.5 Botsitso ba Dimension
E na le khopamo e nyane haholo nakong ea kalafo ea mocheso le taolo e ntle ea boholo, e leng se etsang hore e be e loketseng bakeng salikarolo tsa mechini tse nepahetseng.
6. Kalafo le Tsamaiso ea Mocheso
15-7PH e ka phekoloa ka mocheso maemong a fapaneng a mocheso ho fihlela litšobotsi tse itseng tsa mechini.
Mohato oa 1: Ho Hloekisa Tharollo (Boemo ba A)
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Mocheso ho1038°C (1900°F)hora e le 'ngoe 'me moea o phole.
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Thepa e lula e le ea bohlokoa ebile e ka hlophisoa habonolo.
Mohato oa 2: Phetoho ho ea Boemong ba Martensitic (Boemo TH1050)
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Mosebetsi o batang (hangata phokotso ea 60–70%) ho susumetsa sebopeho sa martensitic.
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Ebe o futhumatsa ho565°C (1050°F)hora e le 'ngoe 'me moea o phole.
Mohato oa 3: Kalafo ea Botsofali (Boemo RH950)
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Lilemo ho510°C (950°F)ka lihora tse 1-4.
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Liphetho li ba thata le matla a maholo.
Taolo e nepahetseng ea mehato ena e netefatsa thepa e tsitsitseng likarolong tse kholo kapa tse rarahaneng.
7. Thepa ea 'Mele
| Thepa | Boleng |
|---|---|
| Botenya | 7.8 g/cm³ |
| Modulus e tenyetsehang | 200 GPa |
| Ho khanna ha mocheso | 16.7 W/m·K |
| Katoloso e lekanang | 10.9 × 10⁻⁶ /°C |
| Ho hanyetsa motlakase | 0.00074 Ω·cm |
Liparamente tsena tsa 'mele li lumella 15-7PH ho sebetsa hantle mochesong o tlase le o phahameng ka mokhoa o itekanetseng ho fihlela ho550°C (1020°F).
8. Papiso le Litšepe tse ling tse sa hloekang tsa PH
| Thepa | 15-7PH | 17-4PH | 17-7PH |
|---|---|---|---|
| Karolo e ka Sehloohong ea ho Tiisa | Aluminium | Koporo | Aluminium |
| Matla (Batsofali) | Holimo Haholo | Holimo | Mahareng |
| Khanyetso ea ts'enyeho | Ho lokile | Hantle haholo | Ho lokile |
| Ho khoneha ha thepa | E babatsehang | Ho lokile | E babatsehang |
| Mocheso o Moholo oa ho Sebetsa | 550°C | 315°C | 425°C |
| Boitšoaro ba Magnetic | Matla a khoheli ka mor'a botsofali | Matla a khoheli | Matla a khoheli |
Tšepe e sa ruseng ea 15-7PHlitlhahisomatla a phahameng le bokgoni ba mochesoha ho bapisoa le 17-4PH le 17-7PH, ha ho ntse ho bolokwa tshebetso e ntle ya ho bola le ho tenyetseha ha tlhahiso.
9. Litšebeliso tsa Tšepe e sa Khabeng ea 15-7PH
Ka lebaka la motsoako oa eona o ikhethang oa matla, ho tiea le ho hanyetsa mafome, 15-7PH e sebelisoa haholo lits'ebetsong tsa bohlokoa moo ho tšepahala ho leng bohlokoa.
9.1 Indasteri ea Lifofane
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Li-spring, li-diaphragm le li-bellow
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Lisebelisoa tsa lifofane le li-fasteners
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Li-actuator tse sebetsang hantle
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Likarolo tsa sebopeho li pepesetsoa mocheso le khatello ea maikutlo
9.2 Lisebelisoa tsa Lik'hemik'hale le tsa Petrochemical
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Methapo ea khatello le likarolo tsa li-valve
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Lisepori le litiiso tsa ts'ebetso ea lik'hemik'hale
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Li-shaft tse sa senyeheng ke mafome
9.3 Tlhahiso ea Motlakase
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Li-retainer tsa turbine blade
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Libolti le lipini tse hanelang mocheso
9.4 Likoloi le Liindasteri
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Lisepori le li-washer tse nepahetseng
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Lisebelisoa tse matla haholo le likarolo tsa lisebelisoa
Ka lebaka la eonaho hanyetsa mokhathala hantle, 15-7PH e bohlokoa haholo likarolong tse tlas'aho jara ka potoloho e phetoang khafetsa.
10. Ho sebetsa ka mechine le tlhahiso
10.1 Ho sebetsa ha mechine
Mechini ea 15-7PH ka mokhoa o ts'oanang le tšepe e sa ruseng ea 17-4PH. E lokela ho etsoa ka mochiniboemo ba annealedho fokotsa ho senyeha ha disebediswa. Kamora ho tsofala, thepa e ba thata haholo mme e hloka disebediswa tsa khabide.
10.2 Ho tjheseletsa
E ka kopanngoa ka ho sebelisa mekhoa ea setso ea ho kopanya, joalo kaGTAW (TIG)leGMAW (MIG)Leha ho le jwalo, kalafo ya mocheso ka mora ho tjheseletsa e kgothaletswa ho tsosolosa kganyetso le matla a ho bola.
10.3 Ho theha
Boemong ba eona bo koahetsoeng, 15-7PH e fana ka sebopeho se setle. Kamora ho sebetsa ka serame le ho tsofala, e thatafala haholo, e fokotsa ts'ebetso e 'ngoe ea ho theha.
11. Khanyetso ea ho Sila ka ho Qaqileng
15-7PH e sebetsa hantle libakeng tse ngata ho kenyeletsoa:
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Lipakapaka tsa leoatleng
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Litharollo tse nang le asiti e bonolo
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Likhase tsa indasteri le mouoane
Leha ho le jwalo, keha e kgothaletswe bakeng sa dibaka tse nang le asiti e ngata kapa chloride e ngatajoalo ka ho qoelisoa metsing a leoatle, moo ho ka bang le masoba. Bakeng sa ho hanyetsa ho bola ho hoholo, bokaholimo bo lokela ho hloekisoa hantle le ho se ke ba sebelisoa ka mor'a ho etsoa.
12. Tshebetso ea Mocheso
Motsoako ona o boloka thepa ea oona ea mechini ho fihlela ho550°C (1020°F), moo ho feta moo ho tsofala ho feteletseng ho ka fokotsang matla. E boetse e boloka ho tiea hantle le matla a mokhathala mochesong o ka tlase ho lefela, e leng se etsang hore e be bonolo bakeng sa lits'ebetso tsa ts'ebeletso tse chesang le tse batang.
13. Taolo ea Boleng le Setifikeiti
At SAKYSTELE, thepa eohle ea tšepe e sa ruseng ea 15-7PH e hlahisoa tlas'alitsamaiso tse tiileng tsa taolo ea boleng, ho netefatsa:
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Ho latela ka botlalo le ho tsebahatsa nomoro ea mocheso
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Tlhahlobo ea metsoako ea lik'hemik'hale ka spectrometer
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Teko ea mechini bakeng sa sehlopha se seng le se seng
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Tlhahlobo ea Ultrasonic le ea bokaholimo
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Lisetifikeiti ho latela maemo a EN 10204 3.1 / 3.2
(Letšoao la SAKYSTEEL)
14. Mefuta e Tloaelehileng ea Sehlahisoa e Fanoang ke SAKYSTEEL
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Libara le Lithupa tse chitja:E huloa ka serame, e hlephiloe, e sitsoe, kapa e bentšitsoe ntle le bohareng
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Lipoleiti le Maqephe:Ho phuthoa ho chesang kapa ho bata ho phuthoa
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Terata le Moqomo:Terata ea selemo e nepahetseng bakeng sa tšebeliso ea lifofane le indasteri
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Li-forging:Dibopeho tse ikgethileng ho latela ditlhaloso tsa moreki
SAKYSTEEL e fana ka mefuta e fapaneng ea boholo bo tenyetsehang, lits'ebeletso tsa ho seha, lethomello e potlakileng ea lefats'eho fihlela nako ea projeke.
15. Melemo ea ho Khetha 15-7PH ho tsoa ho SAKYSTEEL
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Bonnete ba Alloy bo Tiisitsoeng– E netefalitsoe ka PMI le ho latela palo ea mocheso
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Matlotlo a Mechini a Tsitsitseng- Matla le ho thatafala ho tšoanang sehlopheng se seng le se seng
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Kalafo ea Mocheso ea Setsebi– Boemo ba A, TH1050, le RH950 lia fumaneha
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Qetello e Ntle ea Bokaholimo– Dikgetho tse bentšitsoeng kapa tse kganyang bakeng sa dikarolo tse nepahetseng
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Phihlelo ea Lefatše ka Bophara ea ho Romela Linaheng Tse Ling– E lumellana le maemo a ASTM, AMS, le EN
SAKYSTELEe fane ka thepa ea 15-7PH holiindasteri tsa lifofane, tsa tšireletso, tsa likepe le tsa lik'hemik'haleho pholletsa le Asia, Europe le Amerika Leboea.
16. Papiso: 15-7PH khahlano le 17-4PH lits'ebetsong tsa 'Nete
| Thepa | 15-7PH | 17-4PH |
|---|---|---|
| Bothata (Max HRC) | 46 | 42 |
| Mocheso o sebetsang | Ho fihlela ho 550°C | Ho fihlela ho 315°C |
| Matla a Mokhathala | E phahameng | E itekanetseng |
| Ho tjheseletsa | Ho lokile | E babatsehang |
| Ho sebetsa ha mechine | E itekanetseng | Ho molemo |
| Mohlala oa Kopo | Li-spring, Li-diaphragm, Li-valve | Li-shaft, Li-bolt, Likarolo tsa pompo |
Bakeng samatla a mocheso o phahameng le ts'ebetso ea mokhathala, 15-7PH e sebetsa hantle ho feta 17-4PH. Ha ho kgona ho weld le ditjeo e le dintho tsa bohlokwa, 17-4PH e ka nna ya kgethwa.
17. Litlhahiso tsa Polokelo le Tsamaiso
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Boloka holibaka tse omileng, tse hloekilengho qoba tšilafalo le ho bola.
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Qoba ho kopana le bokaholimo ba tšepe ea carbon nakong ea ho sebetsana le eona.
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Sebelisali-arolator tse seng tsa tšepeha o bokella maqephe kapa li-bar.
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Kenya sekwahelo se sireletsang kapa se phuthelang bakeng sa thomello ya thepa kantle ho naha.
Ho sebetsana hantle ho boloka boleng ba bokaholimo ba motsoako le ts'ebetso ea ho bola.
18. Qetello
Tšepe e sa ruseng ea 15-7PHke motsoako o matla haholo, o tiisang pula o fanang ka motsoako o ikhethang oatshebetso ya mechini, ho hanyetsa mafome, le botsitso ba mocheso.
Ka bokgoni ba yona ba ho fihlella matla a tlhahiso a fetang 1300 MPa le ho boloka botsitso ho fihlela ho 550°C, ke kgetho e ntle haholo bakeng salisebelisoa tsa indasteri tsa lifofane, petrochemical, le tse nepahetseng haholo.
At SAKYSTELE, re fana ka thepa ea tšepe e sa ruseng ea 15-7PH e netefalitsoeng e nang le mokhoa o felletseng oa ho latela, ts'ebetso e nepahetseng, le litekanyo tse ikhethileng ho tšehetsa merero e thata ka ho fetisisa ea bareki ba rona.
Ha tshebetso, botshepehi le boleng di le bohlokwa — tshepoSAKYSTELEbakeng sa ditharollo tsa hao tsa tshepe e sa ruseng.
Nako ea poso: Mphalane-29-2025