Hydrogen embrittlement ke ntho e amehang haholo tlhahisong le ka mor'a phekolo ea forgings, haholo-holo tse entsoeng ka litšepe tse matla haholo, litšepe tse se nang tšepe le li-alloys tsa titanium. Ho ba teng ha liathomo tsa haedrojene tse qabeletsoeng mohahong oa tšepe ho ka lebisa ho phunyeha, ho fokotsa ductility, le ho hlōleha ho sa lebelloang. Ho felisa kotsi ena,ho ruruha ha dehydrogen-e tsejoang hape e le hydrogen relief annealing-ke ts'ebetso ea mantlha ea kalafo ea mocheso e sebelisetsoang ho tlosa haedrojene e monyelitsoeng ho tsoa ho forging.
Sengoloa sena se felletseng sa SEO se hlalosa ts'ebetso ea dehydrogen annealing bakeng sa forgings, bohlokoa ba eona, lits'ebetso tse tloaelehileng, liparamente, lisebelisoa tse sebetsang, le mekhoa e metle ea indasteri. Hore na o moenjineri oa kalafo ea mocheso, moreki oa thepa, kapa mohlahlobi oa boleng, tataiso ena e tla u thusa ho utloisisa mokhoa oa ho kenya ts'ebetso ea dehydrogen annealing ka nepo maemong a indasteri.
Dehydrogen Annealing ke Eng?
Dehydrogen annealing ke amokhoa oa phekolo ea mochesoetsoa ho tlosahydrogen e qhibilihisitsoengho tloha ho likarolo tse entsoeng. Hydrogen e ka hlahisoa nakong ea:
-
Pickling (ho hloekisa acid)
-
Electroplating
-
Welding
-
Ho theha tikolohong e mongobo kapa e nang le haedrojene e ngata
Haeba e sa tlosoe, liathomo tsa haedrojene li ka bakaho petsoha ho bakoang ke haedrojene(HIC), ho lieha ho phunyeha, kapatahlehelo ea botshepehi ba mochini.
Ts'ebetso ea annealing e kenyelletsa ho futhumatsa forging ho mocheso o laoloang-ka tlase ho ntlha ea recrystallization-le ho e tšoara ka nako e itseng ho lumella hydrogen hore e phalle ka ntle ho lesela la tšepe.
Hobaneng ha Dehydrogen Annealing e le Bohlokoa?
Mokhoa ona o bohlokoa ka mabaka a 'maloa:
-
E thibela ho hloleha ha hydrogen embrittlement
-
E khutlisetsa thepa ea mochini joalo ka ductility le toughness
-
E ntlafatsa ho tšepahala le polokeho tšebeletsong
-
E bohlokoa bakeng sa ho kopana le maemo a sefofane, likoloi, le boleng ba nyutlelie
Bakeng sa likarolo tse matla tse kang li-bolts, gears, shafts, le likarolo tsa mohaho, dehydrogen annealing e tiisa ts'ebetso ea nako e telele le ho fokotsa kotsi ea ho hlōleha ho sa lebelloang.
sakysteele fana ka lits'ebeletso tsa boikhethelo tsa dehydrogen annealing bakeng sa liindasteri tse nang le thepa e thata le litlhoko tsa polokeho.
Lisebelisoa tse Hlokang Dehydrogen Annealing
Dehydrogen annealing e atisa ho sebelisoa ho lisebelisoa tse latelang tse entsoeng:
-
Litšepe tsa carbon(haholo-holo e tiisitsoe ebile e halefile)
-
Litšepe tsa alloy(mohlala, 4140, 4340, 1.6582)
-
Litšepe tsa martensitic(mohlala, 410, 420)
-
Litšepe tsa Austenitic(mohlala, 304, 316 - ka mor'a ho kha kapa ho pola)
-
Li-alloys tsa titanium le titanium
-
Li-alloys tse thehiloeng ho nickel(libakeng tse pepesehileng haedrojene)
Mekhabiso e pepeselitsoeng ho hloekisoa ka acidic, karabelo ea electrochemical, kapa sepakapaka se nang le hydrogen ke tsona tse ka sehloohong tsa kalafo ena.
Dehydrogen Annealing Mokhoa oa ho Forgings
1. Ho Hloekisa Pele
Pele ho annealing, forging e lokela ho hloekisoa ka oli, litšila, kapa oxide layers ho qoba tšilafalo nakong ea phekolo ea mocheso.
2. Loading into Furnace
Likarolo li kenngoa ka hloko ka seboping se hloekileng, se omeletseng se nang le potoloho e ntle ea moea kapa tšireletso ea sepakapaka e sa sebetseng haeba ho hlokahala.
3. Mothati oa ho futhumatsa
Karolo e futhumatsoa butle-butle ho mocheso oa dehydrogenation. Mefuta e tloaelehileng ea mocheso e kenyelletsa:
-
Lisebelisoa tsa tšepe: 200-300 ° C bakeng sa litšepe tse matla a tlaase, 300-450 ° C bakeng sa litšepe tse matla haholo
-
Lisebelisoa tsa titaniummocheso: 500-700°C
-
Lisebelisoa tsa nickelmocheso: 400–650°C
Ho futhumatsa ka potlako ho qojoa ho thibela khatello ea mocheso kapa ho soahlamana.
4. Nako ea ho lula
The forging e tšoaroa ka mocheso o lebisitsoeng ho lumella hydrogen ho hasana. Nako ea ho pheha e itšetlehile ka:
-
Mofuta oa thepa le boima
-
Botenya ba lebota le geometry
-
Boemo ba ho pepeseha ka haedrojene
Nako e tloaelehileng ea ho noa:
Lihora tse 2 ho isa ho tse 24.
Molao oa letsoho: Hora e le 1 ka inch ea botenya, kapa joalo ka tloaelo e tloaelehileng.
5. Ho phodisa
Ho pholisa ho etsoa butle ka sebōping kapa moeeng ho qoba ho tsosoa ke mocheso. Bakeng sa lits'ebetso tse mahlonoko, ho ka sebelisoa pholiso ea khase ea inert.
sakysteele sebelisa libopi tse lekantsoeng ka mocheso, tse lokisehang tse nang le li-ramp-up le taolo ea nako ea ho inela ho netefatsa liphetho tse tsitsitseng tsa dehydrogen annealing.
Thepa Tse Sebelisitsoeng
-
Libōpi tsa lihlopha tsa motlakase kapa tsa khase
-
Sepakapaka se laoloang kapa libono tsa vacuum (bakeng sa li-alloys tsa titanium / nickel)
-
Thermocouples le ba laola mocheso
-
Lisensara tsa ho lemoha haedrojene (ka boikhethelo)
Litsamaiso tse ikemetseng tse nang le ho rema lifate tsa mocheso li netefatsa hore mokhoa oa ho latella.
Mekhahlelo ea Ts'ebetso: Mohlala bakeng sa Mehala ea tšepe
| Lintho tse bonahalang | Mocheso (°C) | Soak Nako | Sepakapaka |
|---|---|---|---|
| 4140 tšepe | 300–375 | Lihora tse 4-8 | Moea kapa N₂ |
| 4340 tšepe | 325–425 | Lihora tse 6-12 | Moea kapa N₂ |
| Stainless 410 | 350–450 | Lihora tse 4-10 | Moea kapa N₂ |
| Titanium Grade 5 | 600–700 | Lihora tse 2-4 | Argon (khase ea inert) |
| Tlhaloso: 718 | 500–650 | Lihora tse 6-12 | Vacuum kapa N₂ |
Li-parameter li lokela ho netefatsoa ka tlhahlobo ea metallurgical.
Dehydrogen Annealing vs. Stress Relief Annealing
Leha ka bobeli e le kalafo ea mocheso, li sebeletsa merero e fapaneng:
| Sebopeho | Ho hloekisa ka Dehydrogen | Khatello ea Boipheliso ea Khatello |
|---|---|---|
| Morero | Tlosa haedrojene | Fokotsa khatello ea kelello ka hare |
| Mocheso Range | Tlase (200–700°C) | Holimo (500–750°C) |
| Soak Nako | Nako e telele | Khutšoane |
| Mathata a Lebisitsoeng | Ho tlosoa ha hydrogen | Warping, sotha, petsoha |
Lits'ebetsong tse ngata, mekhoa ka bobeli e ka kopanngoa ka potoloho ea phekolo ea mocheso.
Taolo ea Boleng le Teko
Ka mor'a hore dehydrogen annealing, tlhahlobo ea boleng e ka kenyelletsa:
-
Teko ea boima
-
Tlhahlobo ea Microstructure
-
Tlhatlhobo ea litaba tsa haerojene (ka vacuum fusion kapa ho ntšoa ha khase e chesang)
-
Tlhahlobo ea Ultrasonic kapa MPI bakeng sa mapetsong
Lits'oants'o tsa maiketsetso li boetse li lokela ho hlahlobjoa ka pono le ka boholo ho netefatsa botšepehi.
sakysteele fana ka lits'oants'o tse nang le litlaleho tsa boleng bo felletseng le litifikeiti tsa EN10204 3.1 ha li kopa, li kopana le maemo a bareki le indasteri.
Lisebelisoa tsa Dehydrogen Annealed Forgings
Liindasteri tse itšetlehileng ka phekolo ena li kenyelletsa:
●Sepakapaka
Lisebelisoa tsa ho thella, li-turbine shafts, li-fasteners
●Tsa makoloi
Li-axles, likere, likarolo tsa torque e phahameng
●Oli le Khase
'Mele ea li-valve, likarolo tsa sekepe sa khatello
●Phaliso ea Nyutlelie le Matla
Likarolo tsa Reactor, liphaephe, le litšehetso
●Bongaka
Li-implants tsa masapo a Titanium
Lisebelisoa tsena li hloka ts'ebetso e se nang sekoli, 'me dehydrogen annealing e bapala karolo ea bohlokoa ho e fihlela.
Mekhoa e Metle le Likhothaletso
-
Etsa annealing ea dehydrogenka pele ka potlakoka mor'a tlhahiso ea haedrojene
-
Sebelisalibopi tse hloekileng, tse lekantsoeng
-
Qobatshoso ya mochesoka ho laola sekhahla sa ho futhumatsa le ho pholisa
-
Kopanya le liphekolo tse ling (mohlala, ho imolla khatello ea maikutlo, ho kokobetsa) ha ho hlokahala
-
Netefatsa kamehlateko e senyang kapa e sa senyeheng
Sebetsa le mofani oa thepa ea tšeptjoang joalokasakysteelea utloisisang litlhoko tsa tekheniki le litebello tsa indasteri bakeng sa likarolo tse entsoeng ka nepo.
Qetello
Dehydrogen annealing ke ts'ebetso ea bohlokoa ea kalafo ea mocheso bakeng sa ho netefatsa ho tšoarella ha nako e telele le polokeho ea liforomo tse pepeselitsoeng haedrojene nakong ea tlhahiso. Ts'ebetso e nepahetseng ea ts'ebetso ena e thibela ho phunyeha ha hydrogen-induced cracking le ho boloka botšepehi ba mechine ea likarolo tsa bohlokoa.
Ka ho utloisisa liparamente tsa ts'ebetso, lisebelisoa tse sebetsang, le liphapang tse tsoang mekhoeng e meng ea annealing, lienjineri le bareki ba ka etsa bonnete ba hore thepa ea bona ea thepa e fihlella maemo a holimo. Bakeng sa liforomo tsa dehydrogen annealed tse tšehelitsoeng ke litokomane tse felletseng le taolo ea boleng,sakysteelke molekane oa hau ea tšepahalang ho metallurgy indastering.
Nako ea poso: Aug-04-2025