Ua fa'avaeina e Womic Steel o ia lava e tu'uina atu fa'atuatuaina mea e sili ona lelei ma fofo ile 20 tausaga. Faatasi ai ma se tautinoga i le tulaga lelei, o le kamupani e faʻatautaia le tele o alamanuia, ofoina atu fofo faʻafetaui e faʻafetaui ai manaʻoga faʻapitoa. O latou su'esu'ega, e aofia ai mea fa'apitoa ASTM A335 P91 Type 2, o lo'o maua mai i kamupani gaosi fa'ava-o-malo ma fa'aauau pea ona fa'afouina ina ia ausia tulaga maualuga. O le Womic Steel e faʻapitoa i le tuʻuina atu o mea P91 mo le maualuga o le malosi, e aofia ai paipa, faʻapipiʻi, valve, flanges, ma isi mea, faʻamautinoa e maua e tagata faʻatau oloa sili ona lelei.

Standards e mafai ona tuʻuina atu mai le Womic Steel Group:

A335 Chrome Moly Paipa

A335 Alloy Steel Paipa

A335 P5 Alloy Steel Paipa

A335 P9 Alloy Steel Paipa

A335 P11 Alloy Steel Paipa

A335 P12 Alloy Steel Paipa

A335 P22 Alloy Steel Paipa

A335 P91 Alloy Steel Paipa

Vaega Autu o ASTM A335 P91 Type 2 tubes
ASTM A335 P91 Ituaiga 2 o se chrome-moly u'amea uamea ua lauiloa mo lona malosi tulaga ese, tetee vevela, ma le malosi fetolofi. O loʻo faʻavasegaina o se uʻamea ferritic faʻaleleia le malosi o le fetolofi (CSEF), ma faʻamaonia ai mo le maualuga o le vevela ma le maualuga o le mamafa. O le meafaitino e feagai ma se faʻagasologa o togafitiga vevela faʻapitoa:

Fa'asalaina ile 1050 °C.

Ea mālūlū i le 200 °C.

Fa'avevela ile 760 °C.

O lenei faiga e faʻaleleia ai lona malosi fetolofi ma le tumau, ma avea ai ma filifiliga sili atu mo siosiomaga faigata.

Fa'atulagaina ma Fa'amanuiaga ole ASTM A335 P91 Pipa Uamea
Chromium (9%): Faʻaleleia le malosi o le vevela maualuga, faʻamaʻi faʻamaʻi, ma mea faʻainisinia.

Molybdenum (1%): Faʻaleleia le elasticity, ofuina le teteʻe, ma le maualuga-vevela malosi fetolofi.

Vanadium ma Columbium / Niobium: Faʻaleleia atili le malosi o le fetolofi ma le faʻafefe vaivai.

Tulaga lelei o le ASTM A335 P91 Steel Tubes
Faʻaitiitia le mafiafia o puipui: Faʻataga mo vaega mama, faʻaitiitia le taimi uʻamea, ma faʻaitiitia uʻamea faʻatumu.

Ole ola vaivai ole vevela: E oʻo ile 10 taimi sili atu nai lo mea muamua e pei ole T22 poʻo le P22.

Faʻateleina le vevela faʻaogaina: Faʻaleleia le lelei i faʻaoga maualuga-vevela.

Talosaga o ASTM A335 P91 Uamea Tubes
P91 o loʻo faʻaaogaina lautele i alamanuia e manaʻomia mea e mafai ona tatalia le vevela ma le mamafa. O talosaga masani e aofia ai:

Fa'aola eletise: Fauu, toe fa'avevela laina, ma la'au ta'amilosaga tu'ufa'atasi.

La'au suau'u: Mea fa'avevela, mea e fa'agai ai kesi, ma auaunaga tau suau'u.

Faiga paipa maualuga-vevela: E fetaui lelei mo le punou, fa'au'u, ma fa'agaioiga uelo.

Fa'avasegaina o vaila'au o ASTM A335 P91 Tu'u Uamea
O le vailaʻau faʻapitoa o le P91 e faʻamautinoa ai lona faʻatinoga sili atu:

Carbon: 0.08% – 0.12%

Manganese: 0.30% – 0.60%

Chromium: 8.00% – 9.50%

Molybdenum: 0.85% - 1.05%

Vanadium: 0.18% - 0.25%

Nitrogen: 0.030% – 0.070%

Isi elemene: Nikeli, alumini, columbium, titanium, ma le zirconium i aofaiga pulea.

Meatotino Fa'ainisinia
Malosi Tetele: La'ititi 85,000 PSI (585 MPa).

Malosi e maua ai: La'ititi 60,000 PSI (415 MPa).

Uilaina ma Togafitiga vevela ASTM A335 P91 uamea paipa
Uelo P91 e manaʻomia le tausisia atoatoa i taualumaga e tausia ai ona meatotino:

Fa'avevela: Taua e puipuia ai le ta'e o le hydrogen.

Pulea o le vevela i totonu ole va'aiga: Fa'atumauina ile fa'aogaina o faiga fa'avevela fa'aonaponei.

Togafitiga o le vevela pe a maeʻa faʻauʻu (PWHT): Taua e ausia le microstructure manaʻomia ma aloese mai faʻaletonu.

Uila eletise: E tatau ona fetaui ma le tuufaatasiga o mea a matua.

Aisea e Filifilia ai Womic uamea ASTM A335 P91 uamea paipa?
Tele su'esu'ega: Mea maualuga P91 mo au mana'oga uma.

Tomai Fa'apitoa: 'Au fa'apitoa e ta'ita'ia oe ile filifiliga o meafaitino ma fa'aoga.

Tautinoga i tulaga lelei: Na'o mea sili ona lelei mai fale gaosi fa'amaonia.

Mo au ASTM A335 P91 Type 2 mana'oga uma, fa'afeso'ota'i le Womic Steel i le aso. Ua sauni la latou 'au e tu'uina atu fofo e sili atu i ou fa'amoemoega ma tu'uina atu mea e sili ona lelei mo au galuega.