I-A335 ejwayelekile (I-ASTM A335/ASME S-A335) iwukucaciswa komhlaba wonke kwamapayipi ensimbi angenamthungo ensimbi ye-ferritic alloy asetshenziswa endaweni yokushisa ephezulu kanye nasezindaweni ezinengcindezi ephezulu. Isetshenziswa kakhulu ku-petrochemical, amandla (amandla ashisayo/enuclear), izimboni zokubhayela kanye nezicwengiswayo. Amapayipi ensimbi ngaphansi kwaleli zinga anamandla amahle kakhulu okushisa aphezulu, ukumelana ne-creep kanye nokumelana nokugqwala, futhi afanele izimo zokusebenza ezimbi kakhulu.
Izinto ezijwayelekile kanye nokwakheka kwamakhemikhali kwe-A335 ejwayelekile
Izinto ze-A335 zihlukaniswa ngezinombolo "P", futhi amamaki ahlukene afanele amazinga okushisa ahlukene kanye nezindawo ezibolayo:
| Ibanga | Izingxenye zamakhemikhali eziyinhloko | Izici | Izinga lokushisa elisebenzayo |
| A335 P5 | I-Cr 4-6%, Mo 0.45-0.65% | Imelana nokugqwala kwesibabule futhi inyakaze emazingeni okushisa aphakathi nendawo | ≤650°C |
| A335 P9 | Cr 8-10%, Mo 0.9-1.1% | Inokumelana ne-high-temperature oxidation namandla aphezulu uma kuqhathaniswa | ≤650°C |
| I-A335 P11 | Cr 1.0-1.5%, Mo 0.44-0.65% | Ukushisela okuhle namandla ezinga lokushisa elimaphakathi | ≤550°C |
| I-A335 P12 | Cr 0.8-1.25%, Mo 0.44-0.65% | Okufana ne-P11, ukukhetha ukonga | ≤550°C |
| A335 P22 | Cr 2.0-2.5%, Mo 0.9-1.1% | I-Anti-hydrogen corrosion, evame ukusetshenziswa kuma-boilers esiteshini samandla | ≤600°C |
| A335 P91 | I-Cr 8-9.5%, Mo 0.85-1.05% | Amandla aphezulu kakhulu, ancanyelwayo kumayunithi abaluleke kakhulu | ≤650°C |
| A335 P92 | P91 + W | Ukumelana nezinga lokushisa okuphezulu, kulungele amayunithi aphezulu kakhulu | ≤700°C |
Izimo zokufaka izicelo zamapayipi ensimbi e-A335
1. Imboni ye-Petrochemical
I-A335 P5/P9: amayunithi okuqhekeka kwe-catalytic ezindaweni zokucwenga, amapayipi okushisa aphezulu aqukethe isulfure.
I-A335 P11/P12: izishintshi zokushisa, amapayipi omoya okushisa aphakathi nendawo.
2. Imboni yamandla (amandla ashisayo/amandla enuzi)
I-A335 P22: Amapayipi esitimu amakhulu kanye nezihloko zezitshalo zamandla ashisayo zendabuko.
I-A335 P91/P92: Amayunithi abaluleke kakhulu/aphakeme kakhulu, amapayipi amandla enuzi anengcindezi ephezulu.
3. Ama-boilers kanye nezitsha zokucindezela
I-A335 P91: Izingxenye ezisezingeni eliphezulu zokushisa kwama-boilers wesimanje asebenza kahle kakhulu.
I-A335 P92: Amapayipi amelana nezinga lokushisa eliphezulu amabhayela anepharamitha ephezulu.
Ungakhetha kanjani impahla ye-A335 efanele? Izimfuneko zezinga lokushisa:
Izimfuneko zezinga lokushisa:
≤550°C: P11/P12
≤650°C: P5/P9/P22/P91
≤700°C: P92
Indawo eyonakalisayo:
Okumaphakathi okuqukethe isulfure → P5/P9
Indawo edla i-hydrogen → P22/P91
Izindleko namandla:
Ukukhetha kwezomnotho → P11/P12
Izidingo zamandla aphezulu → P91/P92
Izindinganiso ezilinganayo zamazwe ngamazwe zamapayipi ensimbi e-A335
| A335 | (EN) | (JIS) |
| P11 | 13CrMo4-5 | I-STPA23 |
| P22 | 10CrMo9-10 | I-STPA24 |
| P91 | X10CrMoVNb9-1 | I-STPA26 |
FAQ
Q1: Uyini umehluko phakathi kwe-A335 P91 ne-P22?
I-P91: Okuqukethwe okuphezulu kwe-chromium ne-molybdenum, ukumelana nokukhuphuka okuqinile, kulungele amayunithi abaluleke kakhulu.
I-P22: Izindleko eziphansi, ezifanele amabhoyela ezitshalo zamandla endabuko.
Q2: Ingabe ipayipi yensimbi ye-A335 idinga ukwelashwa kokushisa?
Ukwelashwa okujwayelekile + ukuthulisa kuyadingeka, futhi i-P91/P92 nayo idinga ukulawulwa okuqinile kwezinga lokupholisa.
Q3: Ingabe i-A335 P92 ingcono kune-P91?
I-P92 inokumelana nokushisa okuphezulu (≤700 ° C) ngenxa yokuba khona kwe-tungsten (W), kodwa izindleko nazo ziphakeme.
Ipayipi lensimbi elingenamthungo elijwayelekile le-A335 liyinto esemqoka ngaphansi kokushisa okuphezulu nezimo zengcindezi ephezulu. Izinto ezihlukene (ezifana ne-P5, P9, P11, P22, P91, P92) zifanele izimo ezihlukahlukene. Lapho ukhetha, kuyadingeka ukuthi ucabangele ngokuphelele izinga lokushisa, ukubola, amandla nezinto zezindleko, futhi ubhekisele kumazinga alinganayo wamazwe ngamazwe (afana ne-EN, JIS).
Isikhathi sokuthumela: Jun-06-2025
