Mu ASTM A213, kuwonjezera pa zofunikira za makhalidwe olimba ndi kuuma, mayeso otsatirawa amafunikanso: Kuyesa Kosalala ndi Kuyesa Kopindika.
ASTM A335 P22(ASME SA335 P22) ndi chitoliro chachitsulo chopanda chromium-molybdenum chomwe chimagwiritsidwa ntchito kutentha kwambiri, chomwe chimagwiritsidwa ntchito kwambiri muma boiler, ma superheater, ndi kutenthaosinthana zinthu.
Ili ndi 1.90%mpaka 2.60% chromium ndi 0.87% mpaka 1.13% molybdenum, ili ndi kukana kutentha bwino, ndipo imayeneranso kupindika, kupotoza, kapena ntchito zina zofanana.
Nambala ya UNS: K21590.
ASTM A335 ndiye muyezo wokhazikika wa mapaipi opanda chitsulo cha ferritic omwe amagwiritsidwa ntchito kutentha kwambiri. Amagwiritsidwa ntchito kwambiri mu ma boiler, ma superheater, ma heat exchangers, ndi ntchito zina zomwe zimagwira ntchito kutentha kwambiri komanso kuthamanga kwambiri. Kuwonjezera pa Giredi P22, mitundu ina yodziwika bwino ya alloy imaphatikizapoP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597)ndiP91 (UNS P90901).
Wopanga ndi Mkhalidwe
Mapaipi achitsulo a ASTM A335 P22 ayenera kupangidwa ndi njira yopanda msoko ndipo ayenera kumalizidwa ndi kutentha kapena kuzizira ndi njira yomaliza.
Mapaipi achitsulo chosasunthikandi mapaipi opanda ma weld, zomwe zimapangitsa mapaipi achitsulo a P22 kukhala okhazikika komanso odalirika kwambiri m'malo otentha kwambiri komanso opanikizika kwambiri.
Kutentha Chithandizo
Mapaipi achitsulo a P22 ayenera kutenthedwanso ndi kutenthedwa pogwiritsa ntchito annealing yonse, isothermal annealing, kapena normalizing ndi tempering.
| Giredi | Mtundu wa chithandizo cha kutentha | Kuzizira kapena Kutentha Kosafunikira |
| ASTM A335 P22 | anneal yodzaza kapena yosiyana ndi kutentha | — |
| kusinthasintha ndi kusinthasintha | 1250 ℉ [675 ℃] mphindi |
Chromium (Cr) ndi molybdenum (Mo) ndi zinthu zofunika kwambiri zomwe zimapangitsa kuti chitsulo cha P22 chikhale cholimba, zomwe zimapangitsa kuti chikhale cholimba kwambiri, chisamatenthe kwambiri, komanso chikhale cholimba. Kapangidwe kake ka mankhwala kakuwonetsedwa pansipa:
| Giredi | Kapangidwe, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 pasadakhale | 0.025 pasadakhale | 0.50 pasadakhale | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Mayeso a P22 a makina ayenera kuchitika motsatira zofunikira za ASTM A999.
Katundu Wokoka
| Giredi | ASTM A335 P22 | |
| Mphamvu yokoka, mphindi | 60 ksi [415 MPa] | |
| Mphamvu yobereka, mphindi | 30 ksi [205 MPa] | |
| Kutalika kwa mainchesi awiri kapena 50 mm (kapena 4D), mphindi | Longitudinal | Zosintha |
| Kutalikitsa koyambira kwa khoma la 5/16 mu [8 mm] ndi kupitirira mu makulidwe, mayeso a mizere, ndi a kukula konse kakang'ono komwe kayesedwa mu gawo lonse. | 30% | 20% |
| Pamene chitsanzo chozungulira cha mainchesi 2 kapena 50 mm kutalika kapena chocheperako mofanana ndi kutalika kwa chiyerekezo chofanana ndi 4D (kuwirikiza kanayi kukula kwa mainchesi) chikugwiritsidwa ntchito | 22% | 14% |
| Pa mayeso a strip, kuchotsera pa kuchepa kulikonse kwa 1/32 mu [0.8 mm] kwa makulidwe a khoma pansi pa 1/32 mu [8 mm] kuchokera ku kutalika kochepa koyambira kwa magawo otsatirawa kuyenera kupangidwa. | 1.50% | 1.00% |
Katundu Wolimba
Muyezo wa ASTM A335 sutchula zofunikira zenizeni za kuuma kwa mapaipi achitsulo a P22.
Zinthu Zina Zoyesera
Kulekerera kwa m'mimba mwake
Pa chitoliro cholamulidwa ndi NPS [DN] kapena m'mimba mwake wakunja, kusintha kwa m'mimba mwake wakunja sikuyenera kupitirira zofunikira zomwe zawonetsedwa patebulo pansipa:
| Wopanga NPS [DN] | Zosiyanasiyana Zovomerezeka | |
| mu. | mm | |
| 1/8 mpaka 1 1/2 [6 mpaka 40], inchi. | ±1/64 [0.015] | ± 0.40 |
| Kupitirira 1 1/2 mpaka 4 [40 mpaka 100], inchi. | ±1/32 [0.031] | ± 0.79 |
| Kupitirira 4 mpaka 8 [100 mpaka 200], mainchesi. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Kupitirira 8 mpaka 12 [200 mpaka 300], mainchesi. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Oposa 12 [300] | ± 1% ya dayamita yakunja yotchulidwa | |
Pa chitoliro chokonzedwa kuti chikhale m'mimba mwake mkati, m'mimba mwake mkati mwake musasinthe kuposa 1% kuchokera m'mimba mwake mkati mwake.
Kulekerera kwa Makulidwe a Khoma
Kuwonjezera pa malire osabisika a makulidwe a khoma la chitoliro omwe amaperekedwa ndi malire a kulemera mu ASTM A999, makulidwe a khoma la chitoliro nthawi iliyonse ayenera kukhala mkati mwa zolekerera zomwe zafotokozedwa mu tebulo ili m'munsimu:
| Wopanga NPS [DN] | Kulekerera |
| 1/8 mpaka 2 1/2 [6 mpaka 65] kuphatikiza ma ratios onse a t/D | -12.5 % ~ +20.0 % |
| Pamwamba pa 2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Pamwamba pa 2 1/2, t/D ＞ 5% | -12.5 % ~ +15.0 % |
| ASME | ASTM | EN | DIN | JIS |
| ASME SA335 P22 | ASTM A213 T22 | DIN 10216-2 10CrMo9-10 | DIN 17175 10CrMo9-10 | JIS G 3458 STPA25 |
Zipangizo:mapaipi ndi zolumikizira zachitsulo zopanda msoko za ASTM A335 P22;
Kukula:1/8" mpaka 24", kapena kusinthidwa malinga ndi zomwe mukufuna;
Utali:Kutalika kosasinthika kapena kudula motsatira dongosolo;
Kupaka:Zophimba zakuda, malekezero opindika, zoteteza malekezero a mapaipi, mabokosi amatabwa, ndi zina zotero.
Thandizo:Satifiketi ya IBR, kuyang'anira TPI, MTC, kudula, kukonza, ndi kusintha;
MOQ:1 m;
Malamulo Olipira:T/T kapena L/C;
Mtengo:Lumikizanani nafe kuti mudziwe mitengo yaposachedwa ya chitoliro chachitsulo cha T11;
