TLHALOSO
Mofuta oa 347 / 347H tšepe e sa hloekang ke mofuta oa austenitic oa tšepe ea chromium, e nang le columbium e le ntho e tsitsitseng. Tantalum e ka boela ea eketsoa bakeng sa ho finyella botsitso. Sena se felisa pula ea carbide, hammoho le kutu ea intergranular liphaepheng tsa tšepe. Mofuta oa 347 / 347H lipeipi tsa tšepe tse sa hloekang li fana ka thepa e phahameng ea ho phunyeha le khatello ea maikutlo ho feta grade 304 le 304L. Sena se etsa hore li tšoanelehe bakeng sa ho pepesehela ts'usumetso le corrosion ea intergranular. Ho feta moo, ho kenyelletsoa ha columbium ho lumella liphaephe tse 347 ho ba le khanyetso e ntle ea kutu, esita le ho feta ea liphaephe tse 321 tsa tšepe e sa hloekang. Leha ho le joalo, tšepe ea 347H ke sebaka se phahameng sa khabone se nkang sebaka sa phaephe ea tšepe e sa hloekang sehlopheng sa 347. Ka hona, li-tubes tsa tšepe tsa 347H li fana ka mocheso o phahameng o ntlafalitsoeng le thepa ea creep.
347 / 347H MESEBETSI EA TŠEPI E TŠEPANG
Tse latelang ke thepa ea lipeipi tsa tšepe tse 347 / 347H tse fanoang ke Arch City Steel & Alloy:
Corrosion Resistance:
- E bonts'a khanyetso ea oxidation e ts'oanang le litšepe tse ling tsa austenitic
- E ratoa ho feta kereiti ea 321 bakeng sa libaka tse nang le metsi le mocheso o mong o tlase
- Thepa e ntle ea mocheso o phahameng ho feta 304 kapa 304L
- Khanyetso e ntle ea ho nyenyefatsa maemong a mocheso o phahameng
- E loketse lisebelisoa tse cheselitsoeng tse boima tse ke keng tsa thijoa
- E sebelisetsoa lisebelisoa tse sebetsang pakeng tsa 800 ho isa ho 150 ° F (427 HO 816 ° C)
Weldability:
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347 / 347H liphaephe / liphaephe tsa tšepe tse sa hloekang li nkuoa e le tsona tse chesehang ka ho fetesisa har'a lipeipi tsohle tsa tšepe tsa maemo a holimo.
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Li ka chesoa ka mekhoa eohle ea khoebo
Kalafo ea Mocheso:
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347 / 347H liphaephe le liphaephe tsa tšepe tse sa hloekang li fana ka mocheso o fapaneng oa 1800 ho isa ho 2000 ° F.
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Ba ka imolla khatello ea maikutlo ntle le kotsi ea ho bola ha intergranular ka har'a sebaka sa pula ea 800 ho isa ho 1500 ° F.
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Ha e khone ho thatafatsoa ke kalafo ea mocheso
Lisebelisoa:
Liphaephe tsa 347 / 347H hangata li sebelisoa bakeng sa ho etsa thepa e lokelang ho sebelisoa tlas'a maemo a matla a ho senya. Hape, hangata li sebelisoa indastering ea ho hloekisa peterole. Lisebelisoa tse kholo li kenyelletsa:
- Mekhoa ea lik'hemik'hale e phahameng ea mocheso
- Li-tubes tse futhumatsang mocheso
- Liphaephe tse matla tsa mouoane
- Mouoane o phahameng oa mocheso le liphaephe / liphaephe
- Sistimi ea ho felloa ke matla haholo
- Li-superheaters tse khanyang
- Liphaephe tsa ho hloekisa ka kakaretso
MOTS'EOA CHEMEKE
| Sebopeho sa Lik'hemik'hale se Tloaelehileng % (boholo ba boleng, ntle le ha bo boletsoe) | ||||||||
| Kereiti | C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
| 347 | 0.08 max | mets: 17.0 boholo: 20.0 | 2.0 max | mets: 9.0 boholo: 13.0 | 0.04 boholo | 0.30 max | 0.75 boholo | mets:10x C boholo: 1.0 |
| 347H | mets: 0.04 boholo: 0.10 | mets: 17.0 boholo: 20.0 | 2.0 max | mets: 9.0 boholo: 13.0 | 0.03 boholo | 0.30 max | 0.75 boholo | mets:10x C boholo: 1.0 |
Nako ea poso: Oct-09-2020