O le tulaga A335 (ASTM A335/ASME S-A335) o se faʻasalalauga faʻavaomalo mo paipa uʻamea faʻaogaina ferritic uʻamea faʻaaogaina i le maualuga o le vevela ma le maualuga o le siosiomaga. E fa'aaogaina lautele i le petrochemical, malosi (maalili / malosi faaniukilia), fau ma fa'amama alamanuia. O paipa uʻamea i lalo o lenei faʻataʻitaʻiga o loʻo i ai le malosi maualuga o le vevela, faʻalavelave fetolofi ma le faʻaleagaina, ma e talafeagai mo tulaga ogaoga o galuega.
Mea masani ma vailaʻau faʻapipiʻi o le tulaga A335
A335 meafaitino e iloga i numera "P", ma togi eseese e talafeagai mo le eseese o le vevela ma siosiomaga pala:
| Vasega | Vaega kemikolo autu | Uiga | Tau talafeagai |
| A335 P5 | Cr 4-6%, Mo 0.45-0.65% | Tete'e i le sulfur pala ma fetolofi i le vevela tau | ≤650°C |
| A335 P9 | Cr 8-10%, Mo 0.9-1.1% | E iai le maualuga o le vevela o le faʻamaʻiina o le faʻamaʻiina ma le malosi maualuga | ≤650°C |
| A335 P11 | Cr 1.0-1.5%, Mo 0.44-0.65% | Lelei weldability ma feololo malosi malosi | ≤550°C |
| A335 P12 | Cr 0.8-1.25%, Mo 0.44-0.65% | E tutusa ma le P11, o se filifiliga taugofie | ≤550°C |
| A335 P22 | Cr 2.0-2.5%, Mo 0.9-1.1% | Anti-hydrogen corrosion, e masani ona faʻaaogaina i pusa eletise | ≤600°C |
| A335 P91 | Cr 8-9.5%, Mo 0.85-1.05% | Malosi maualuga-maualuga, e sili mo iunite mataʻutia | ≤650°C |
| A335 P92 | P91 + W | Tete'e maualuga maualuga, talafeagai mo iunite ultra-supercritical | ≤700°C |
Fa'atatauga fa'aoga o paipa u'amea A335
1. Alamanuia Petrokimia
A335 P5/P9: vaega ta'e fa'amamafa i fale fa'amamā, paipa o lo'o iai le sulfur maualuga.
A335 P11/P12: fa'afesuia'i vevela, paipa fe'avea'i ausa e feololo.
2. Alamanuia malosi (malosi vevela/malosi faaniukilia)
A335 P22: Pipa ausa autu ma ulutala o fale eletise masani.
A335 P91/P92: Supercritical/ultra-supercritical units, paipa eletise malosi faaniukilia.
3. Pula ma ipu mamafa
A335 P91: Vaega maualuga-vevela o pusa faʻaola faʻaonaponei.
A335 P92: Laina paipa e tete'e atu i le vevela mo pusa fa'avela maualuga.
E fa'afefea ona filifili le mea sa'o A335? Manaoga vevela:
Manaoga vevela:
≤550°C: P11/P12
≤650°C: P5/P9/P22/P91
≤700°C: P92
Siosiomaga pala:
Ala e iai le sulfur → P5/P9
Si'osi'omaga fa'aleagaina o le vai → P22/P91
Tau ma le malosi:
Filifiliga tau tamaoaiga → P11/P12
Manaoga maualuga malosi → P91/P92
Fa'ava-o-malo tulaga tutusa mo paipa u'amea A335
| A335 | （EN） | (JIS) |
| P11 | 13CrMo4-5 | STPA23 |
| P22 | 10CrMo9-10 | STPA24 |
| P91 | X10CrMoVNb9-1 | STPA26 |
FAQ
Q1: O le a le eseesega i le va o le A335 P91 ma le P22?
P91: E sili atu le maualuga o le chromium ma le molybdenum, sili atu le malosi o le fetolofi, talafeagai mo iunite faʻapitoa.
P22: Tau maualalo, talafeagai mo fau afi eletise masani.
Q2: E manaʻomia e le paipa uʻamea A335 togafitiga vevela?
E mana'omia le Normalizing + tempering treatment, ma le P91/P92 e mana'omia ai fo'i le pulea lelei o le fua o le mālūlū.
Q3: E sili atu le A335 P92 nai lo le P91?
P92 e maualuga atu le vevela (≤700 ° C) ona o le i ai o le tungsten (W), ae o le tau e maualuga atu foi.
A335 u'amea masani paipa u'amea seamless o se mea autu i lalo o le vevela maualuga ma tulaga maualuga o le mamafa. O mea eseese (pei o le P5, P9, P11, P22, P91, P92) e talafeagai mo faʻaaliga eseese. Pe a filifilia, e manaʻomia le faʻavasegaina o le vevela, faʻaleagaina, malosi ma le tau, ma faʻasino i tulaga tutusa faʻavaomalo (e pei ole EN, JIS).
Taimi meli: Iuni-06-2025
