A335 muyezo (ASTM A335/ASME S-A335) ndi mfundo zapadziko lonse lapansi zamapaipi azitsulo a ferritic alloy opanda zitsulo omwe amagwiritsidwa ntchito potentha kwambiri komanso m'malo opanikizika kwambiri. Amagwiritsidwa ntchito kwambiri mu petrochemical, mphamvu (mafuta / nyukiliya mphamvu), m'mabotolo otenthetsera ndi kuyeretsa mafakitale. Mapaipi achitsulo omwe ali pansi pa mulingo uwu ali ndi mphamvu yabwino kwambiri ya kutentha, kukana kuyandama komanso kukana kwa dzimbiri, ndipo ndi oyenera kugwira ntchito mopitilira muyeso.
Zida wamba komanso kapangidwe kake ka A335
Zida za A335 zimasiyanitsidwa ndi manambala a "P", ndipo magiredi osiyanasiyana ndi oyenera kutentha kosiyanasiyana ndi malo owononga:
| Gulu | Zigawo zazikulu za mankhwala | Makhalidwe | Kutentha koyenera |
| A335 P5 | Cr 4-6%, Mo 0.45-0.65% | Kugonjetsedwa ndi dzimbiri sulfure ndi kukwawa pa sing'anga kutentha | ≤650°C |
| A335 P9 | Cr 8-10%, Mo 0.9-1.1% | Imakhala ndi kutentha kwambiri kwa okosijeni komanso mphamvu zambiri | ≤650°C |
| A335 P11 | Cr 1.0-1.5%, Mo 0.44-0.65% | Good weldability ndi sing'anga-kutentha mphamvu | ≤550°C |
| A335 P12 | Cr 0.8-1.25%, Mo 0.44-0.65% | Zofanana ndi P11, kusankha kwachuma | ≤550°C |
| A335 P22 | Cr 2.0-2.5%, Mo 0.9-1.1% | Anti-hydrogen corrosion, yomwe imagwiritsidwa ntchito kwambiri pama boilers apamagetsi | ≤600°C |
| A335 P91 | Cr 8-9.5%, Mo 0.85-1.05% | Mphamvu zapamwamba kwambiri, zokondedwa pamayunitsi apamwamba kwambiri | ≤650°C |
| A335 P92 | P91 + W | Kukana kutentha kwapamwamba, koyenera kwa ultra-supercritical units | ≤700°C |
Zochitika zogwiritsira ntchito mapaipi achitsulo A335
1. Makampani a petrochemical
A335 P5/P9: mayunitsi osweka m'malo oyeretsera, mapaipi okhala ndi sulfure wotentha kwambiri.
A335 P11/P12: osinthanitsa kutentha, mapaipi opatsirana ndi nthunzi yapakatikati.
2. Makampani opanga magetsi (mphamvu yamafuta/nyukiliya)
A335 P22: Mapaipi akuluakulu a nthunzi ndi mitu yazomera zamphamvu zamagetsi.
A335 P91 / P92: Magawo apamwamba kwambiri / apamwamba kwambiri, mapaipi amphamvu kwambiri a nyukiliya.
3. Mabotolo ndi zotengera zokakamiza
A335 P91: Zigawo zotentha kwambiri zama boiler amakono apamwamba kwambiri.
A335 P92: Mapaipi osamva kutentha kwambiri kwa ma boiler apamwamba kwambiri.
Momwe mungasankhire zinthu zoyenera za A335? Zofunikira pa kutentha:
Zofunikira pa kutentha:
≤550°C: P11/P12
≤650°C: P5/P9/P22/P91
≤700°C: P92
Malo owononga:
Sulfur-containing medium → P5/P9
Malo owononga haidrojeni → P22/P91
Mtengo ndi mphamvu:
Kusankha kwachuma → P11/P12
Zofunikira zamphamvu kwambiri → P91/P92
Miyezo yofanana yapadziko lonse lapansi yamapaipi achitsulo A335
| A335 | (EN) | (JIS) |
| p11 | 13CrMo4-5 | Chithunzi cha STPA23 |
| P22 | 10CrMo9-10 | Chithunzi cha STPA24 |
| p91 | X10CrMoVNb9-1 | Chithunzi cha STPA26 |
FAQ
Q1: Kodi pali kusiyana kotani pakati pa A335 P91 ndi P22?
P91: Zomwe zili pamwamba pa chromium ndi molybdenum, kukana kwamphamvu kwamphamvu, koyenera mayunitsi apamwamba kwambiri.
P22: Mtengo wotsika, woyenera ma boiler opangira magetsi azikhalidwe.
Q2: Kodi chitoliro chachitsulo cha A335 chimafunikira chithandizo cha kutentha?
Chithandizo cha Normalizing + kutentha chimafunika, ndipo P91/P92 imafunanso kuwongolera kozizira kwambiri.
Q3: Kodi A335 P92 ili bwino kuposa P91?
P92 imakhala ndi kutentha kwakukulu (≤700 ° C) chifukwa cha kukhalapo kwa tungsten (W), koma mtengo wake ndi wapamwamba.
A335 muyezo aloyi aloyi zitsulo chitoliro chosasinthika chitsulo chitoliro ndi mfundo zofunika pansi pa kutentha kwambiri ndi mikhalidwe yothamanga kwambiri. Zida zosiyanasiyana (monga P5, P9, P11, P22, P91, P92) ndizoyenera pazochitika zosiyanasiyana. Posankha, m'pofunika kuganizira mozama kutentha, kuwononga, mphamvu ndi zinthu zamtengo wapatali, ndikutchulanso miyezo yapadziko lonse lapansi (monga EN, JIS).
Nthawi yotumiza: Jun-06-2025
