Tekanyetso ea A335 (ASTM A335/ASME S-A335) ke tlhaloso ea machaba bakeng sa liphaephe tsa tšepe tse se nang sekoli tsa tšepe ea ferritic alloy tse sebelisoang libakeng tse nang le mocheso o phahameng le khatello e phahameng. E sebelisoa haholo indastering ea petrochemical, motlakase (matla a mocheso/a nyutlelie), boiler le ho hloekisa. Liphaephe tsa tšepe tse tlas'a maemo ana li na le matla a matle a mocheso o phahameng, ho hanyetsa ho hasana le ho hanyetsa mafome, 'me li loketse maemo a feteletseng a mosebetsi.
Lisebelisoa tse tloaelehileng le metsoako ea lik'hemik'hale tsa tekanyetso ea A335
Lisebelisoa tsa A335 li khetholloa ka linomoro tsa "P", 'me limaraka tse fapaneng li loketse mocheso o fapaneng le libaka tse senyang:
| Sehlopha | Likarolo tse ka sehloohong tsa lik'hemik'hale | Litšobotsi | Mocheso o sebetsang |
| A335 P5 | Cr 4-6%, Mo 0.45-0.65% | E hanela ho bola ha sebabole 'me e thekesela mochesong o mahareng | ≤650°C |
| A335 P9 | Cr 8-10%, Mo 0.9-1.1% | E na le khanyetso ea oxidation mochesong o phahameng le matla a phahameng haholo | ≤650°C |
| A335 P11 | Cr 1.0-1.5%, Mo 0.44-0.65% | Ho tjheseletsa hantle le matla a mocheso o mahareng | ≤550°C |
| A335 P12 | Cr 0.8-1.25%, Mo 0.44-0.65% | Ho tšoana le P11, khetho e theko e tlaase | ≤550°C |
| A335 P22 | Cr 2.0-2.5%, Mo 0.9-1.1% | Ho thibela ho bola ha haeterojene, e sebelisoang haholo liboiler tsa seteishene sa motlakase | ≤600°C |
| A335 P91 | Cr 8-9.5%, Mo 0.85-1.05% | Matla a phahameng haholo, a khethoa bakeng sa diyuniti tse nang le boleng bo phahameng haholo | ≤650°C |
| A335 P92 | P91 + W | Ho hanyetsa mocheso o phahameng, ho loketse diyuniti tse nang le boleng bo hodimo haholo | ≤700°C |
Maemo a tshebediso ya diphaephe tsa tshepe tsa A335
1. Indasteri ea Petrochemical
A335 P5/P9: diyuniti tsa ho petsoha ha di-catalytic difemeng tsa ho hlwekisa, diphaephe tse nang le sebabole tse nang le mocheso o phahameng.
A335 P11/P12: diphaephe tsa phetiso ya mouoane tse nang le mocheso o mahareng, tse fapanyetsanang mocheso.
2. Indasteri ea motlakase (matla a mocheso/matla a nyutlelie)
A335 P22: Liphaephe tse kholo tsa mouoane le lihlooho tsa lifeme tsa motlakase tsa setso.
A335 P91/P92: Diyuniti tse hlokolosi haholo/tse tebileng haholo, diphaephe tsa kgatello e phahameng ya matla a nyutlelie.
3. Liboiler le lijana tsa khatello
A335 P91: Likarolo tse nang le mocheso o phahameng tsa liboiler tsa sejoale-joale tse sebetsang hantle haholo.
A335 P92: Liphaephe tse hanelang mocheso o phahameng bakeng sa liboiler tse nang le liparamente tse phahameng.
Mokhoa oa ho khetha thepa e nepahetseng ea A335? Litlhoko tsa mocheso:
Litlhoko tsa mocheso:
≤550°C: P11/P12
≤650°C: P5/P9/P22/P91
≤700°C: P92
Tikoloho e senyang:
Sesebediswa se nang le sebabole → P5/P9
Tikoloho e senyang ea haedrojene → P22/P91
Litšenyehelo le matla:
Khetho e theko e tlase → P11/P12
Litlhoko tse matla haholo → P91/P92
Litekanyetso tse lekanang tsa machaba bakeng sa liphaephe tsa tšepe tsa A335
| A335 | (EN) | (JIS) |
| P11 | 13CrMo4-5 | STPA23 |
| P22 | 10CrMo9-10 | STPA24 |
| P91 | X10CrMoVNb9-1 | STPA26 |
LBH
P1: Phapang ke efe pakeng tsa A335 P91 le P22?
P91: Chromium e ngata le molybdenum e nang le dikahare tse ngata, e na le kganyetso e matla ya ho kgefutsa, e loketse diyuniti tse nang le dikotsi tse kgolo.
P22: Theko e tlase, e loketse liboiler tsa motlakase tsa setso.
P2: Na phaephe ea tšepe ea A335 e hloka phekolo ea mocheso?
Ho lokisa le ho lokisa mocheso hoa hlokahala, 'me P91/P92 e boetse e hloka taolo e tiileng ea sekhahla sa ho pholisa.
P3: Na A335 P92 e betere ho feta P91?
P92 e na le khanyetso e phahameng ea mocheso (≤700°C) ka lebaka la boteng ba tungsten (W), empa litšenyehelo le tsona li phahame.
Phaephe e tloaelehileng ea tšepe e se nang seamless ea motsoako oa A335 ke thepa ea bohlokoa tlas'a maemo a mocheso o phahameng le khatello e phahameng. Lisebelisoa tse fapaneng (tse kang P5, P9, P11, P22, P91, P92) li loketse maemo a fapaneng. Ha u khetha, ho hlokahala ho nahana ka botlalo ka mocheso, ho bola, matla le lintlha tsa litšenyehelo, le ho sheba maemo a lekanang a machaba (joalo ka EN, JIS).
Nako ea poso: Phuptjane-06-2025
