ASTM A335 P9, yomwe imadziwikanso kuti ASME SA335 P9, ndi chitoliro chachitsulo chosasunthika cha ferritic chothandizira kutentha kwambiriUNS No. K90941.
Ma alloying amapangidwa makamaka ndi chromium ndi molybdenum.Zomwe zili mu chromium zimachokera ku 8.00 - 10.00%, pamene molybdenum zili mu 0.90% - 1.10%.
P9ali ndi mphamvu zabwino kwambiri komanso kukana kwa dzimbiri m'malo otentha kwambiri ndipo amagwiritsidwa ntchito kwambiri m'ma boilers, zida za petrochemical, ndi malo opangira magetsi komwe kumafunika kutentha kwambiri komanso kupanikizika kwambiri.
⇒ NkhaniASTM A335 P9 / ASME SA335 P9 opanda aloyi zitsulo chitoliro.
⇒M'mimba mwake: 1/8 "- 24".
⇒Khoma makulidweZofunikira za ASME B36.10.
⇒Ndandanda: SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140 ndi SCH160.
⇒Chizindikiritso: STD (muyezo), XS (yowonjezera-yamphamvu), kapena XXS (yowiri mowonjezera).
⇒Utali: Kutalika kwachindunji kapena mwachisawawa.
⇒Kusintha mwamakonda: Non-standard awiri akunja, makulidwe khoma, kutalika, etc. malinga ndi zofunika.
⇒Zosakaniza: Titha kupereka ma bends omwewo, ma flanges opondaponda, ndi zinthu zina zothandizira chitoliro.
⇒Chitsimikizo cha IBR: Satifiketi ya IBR ikhoza kuperekedwa ngati ikufunika.
⇒TSIRIZA: Mapeto ang'onoang'ono, mapeto opindika, kapena mapeto a chitoliro.
⇒Kulongedza: matabwa mlandu, zitsulo lamba kapena zitsulo waya kulongedza katundu, pulasitiki kapena chitsulo chitoliro mapeto mtetezi.
⇒Mayendedwe: panyanja kapena pandege.
Chitoliro chachitsulo cha ASTM A335 chiyenera kukhala chopanda msoko.
Seamless zitsulo chitoliro ndi chitoliro zitsulo popanda welds lonse.
Popeza chitoliro chopanda chitsulo chosasunthika chilibe zitsulo zowotcherera m'mapangidwe ake, zimapewa zoopsa zomwe zingakhalepo zomwe zingagwirizane ndi nkhani za weld quality.Mbali imeneyi imalola chitoliro chosasunthika kupirira zipsyinjo zapamwamba, ndipo mawonekedwe ake osakanikirana amatsimikiziranso kukhulupirika ndi chitetezo cha chitoliro m'madera othamanga kwambiri.
Kuphatikiza apo, kudalirika kwa machubu a ASTM A335 kumakulitsidwa ndikuwonjezedwa kwazinthu zinazake zolumikizira kutentha kwambiri komanso kupanikizika kwambiri.
Mitundu yochizira kutentha yomwe ilipo pazida za P9 imaphatikizanso kuziziritsa kwathunthu kapena kutenthetsa, komanso kukhazikika komanso kutentha.Kutenthetsa ndi kutentha kumakhala ndi kutentha kwa 1250 ° F [675 ° C].
Zinthu zazikuluzikulu za P9 ndizoCrndiMo, omwe ndi aloyi a chromium-molybdenum.
Cr (Chromium): Monga chinthu chachikulu cha aloyi, Cr imapereka mphamvu zabwino kwambiri zotentha komanso kukana makutidwe ndi okosijeni.Zimapanga filimu wandiweyani ya chromium oxide pamwamba pazitsulo, ndikuwonjezera kukhazikika komanso kukana kwa dzimbiri kwa chitoliro pa kutentha kwambiri.
Mo (Molybdenum): Kuwonjezera kwa Mo kumawonjezera mphamvu ndi kulimba kwa ma alloys, makamaka m'madera otentha kwambiri.Mo imathandizanso kupititsa patsogolo kulimba kwa zinthuzo, mwachitsanzo, kutha kukana mapindikidwe pansi pa kutentha kwanthawi yayitali.
Tensile Properties
P5, P5b, P5c, P9,P11, P15, P21, ndi P22: Mphamvu zamakokedwe ndi zokolola ndizofanana.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, ndi P22: Kutalika komweko.
AGulu 5 limapereka ziwerengero zochepa zomwe zawerengedwa.
Kumene makulidwe a khoma ali pakati pa zikhalidwe ziwiri pamwambapa, mtengo wocheperako wotalikirapo umatsimikiziridwa ndi njira iyi:
Longitudinal, P9: E = 48t + 15.00 [E = 1.87t + 15.00]
Chodutsa, P9: E = 32t + 15.00 [E = 1.25t + 15.00]
kumene:
E = elongation mu 2 in. kapena 50 mm, %,
t = makulidwe enieni a zitsanzo, mu. [mm].
Kuuma
P9 safuna kuyesa kuuma.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, ndi P921: Palibe kuyesa kuuma kofunikira.
Pamene m'mimba mwake > 10 in. [250 mm] ndi makulidwe a khoma ≤ 0.75 mkati [19 mm], zonse zidzayesedwa ndi hydrostatically.
Kupanikizika koyesera kungathe kuwerengedwa pogwiritsa ntchito equation yotsatira.
P = 2St/D
P= hydrostatic test pressure mu psi [MPa];
S= kupsinjika kwa khoma la chitoliro mu psi kapena [MPa];
t= makulidwe a khoma lotchulidwa, makulidwe a khoma mwadzina malinga ndi nambala ya ANSI yotchulidwa kapena 1.143 kuwirikiza pang'ono makulidwe a khoma, mkati. [mm];
D= kutchulidwa kunja kwake, m'mimba mwake molingana ndi kukula kwake kwa chitoliro cha ANSI, kapena m'mimba mwake wakunja kuwerengedwera powonjezera 2t (monga tafotokozera pamwambapa) kumtunda wamkati womwe wafotokozedwa, mu. [mm].
Nthawi yoyesera: sungani osachepera 5s, osataya kutayikira.
Pamene chitoliro sichiyenera kuyesedwa ndi hydrotested, kuyesa kosawononga kumayenera kuchitidwa pa chitoliro chilichonse kuti muwone zolakwika.
Kuyesa kosawononga kwa zinthu za P9 kuyenera kuchitidwa ndi imodzi mwa njirazoE213, E309 or E570.
E213: Yesetsani Kuyesa kwa Akupanga kwa Chitoliro cha Zitsulo ndi Tubing;
E309: Phunzirani kwa Eddy Panopa Kuwunika kwa Zitsulo Tubular Zamgulu Pogwiritsa Ntchito Magnetic Saturation;
E570: Yesani Flux Kutayikira Mayeso a Ferromagnetic Zitsulo Tubular Products;
Kusiyanasiyana Kovomerezeka mu Diameter
Kupatuka kwa m'mimba mwake kumatha kugawidwa molingana ndi 1. kutengera m'mimba mwake mkati kapena 2. kutengera m'mimba mwake mwadzina kapena kunja.
1. M'mimba mwake: ± 1%.
2. NPS [DN] kapena m'mimba mwake: Izi zikugwirizana ndi zolakwika zomwe zili mu tebulo ili m'munsimu.
Kusiyanasiyana Kovomerezeka mu Makulidwe a Khoma
Makulidwe a khoma la chitoliro pa nthawi iliyonse sayenera kupitirira kulolerana kwapadera.
Makulidwe ochepa a khoma ndi mainchesi akunja kuti awonedwe kuti atsatire lamulo ili la chitoliro cholamulidwa ndi NPS [DN] ndi nambala yandandanda ikuwonetsedwa muASME B36.10M.
Zamkatimu zolembera: Dzina la wopanga kapena chizindikiro;nambala yokhazikika;kalasi;kutalika ndi chizindikiro chowonjezera "S".
Zizindikiro za kuthamanga kwa hydrostatic ndi kuyesa kosawononga mu tebulo ili m'munsimu ziyeneranso kuphatikizidwa.
Kuyika malo: Kuyika chizindikiro kuyenera kuyamba pafupifupi mainchesi 12 (300 mm) kuchokera kumapeto kwa chitoliro.
Kwa mapaipi ofikira ku NPS 2 kapena osakwana 3 ft (1 m) m'litali, cholembacho chikhoza kumangirizidwa pa tag.
Chitoliro chachitsulo cha ASTM A335 P9 chimagwiritsidwa ntchito kwambiri m'ma boilers, malo opangira magetsi a petrochemical, etc., omwe amafunikira kupirira kutentha kwambiri komanso kuthamanga kwambiri chifukwa cha kutentha kwambiri komanso kukana kwambiri.
Mabotolo: Makamaka m'mapaipi akuluakulu a nthunzi ndi kupoperanso mapaipi amadzi otentha kwambiri komanso okwera kwambiri chifukwa cha kutentha kwambiri komanso kupanikizika.
Petrochemical zida: Monga mapaipi ophwanyira ndi mapaipi otentha kwambiri, omwe amagwiritsira ntchito mpweya wotentha kwambiri ndi mankhwala, amafuna zipangizo zomwe zimakhala ndi kutentha kwambiri komanso kukana kwa dzimbiri.
Malo opangira magetsi: Kwa mapaipi akuluakulu a nthunzi ndi ma heaters apamwamba kwambiri, komanso mapaipi amkati a turbine kuti athe kupirira kutentha kwambiri komanso kuthamanga kwanthawi yayitali.
P9 Materials ali ndi magiredi awo muyeso mumitundu yosiyanasiyana yamitundu.
EN 10216-2: 10CrMo9-10;
GB/T 5310: 12Cr2Mo;
JIS G3462: STBA 26;
ISO 9329: 12CrMo195;
GOST 550: 12ChM;
Musanasankhe chinthu chilichonse chofanana, tikulimbikitsidwa kuti kufananitsa mwatsatanetsatane magwiridwe antchito ndi kuyezetsa kuchitidwe kuti zitsimikizire kuti zinthu zina zidzakwaniritsa zofunikira pakupanga koyambirira.
Kuyambira pomwe idakhazikitsidwa mu 2014,Botop Steelwakhala katundu kutsogolera mpweya zitsulo chitoliro ku Northern China, kudziwika ndi utumiki kwambiri, mankhwala apamwamba, ndi mayankho mabuku.
Kampaniyi imapereka mapaipi osiyanasiyana a zitsulo za carbon ndi zinthu zomwe zimagwirizana nazo, kuphatikizapo zopanda msoko, ERW, LSAW, ndi chitoliro chachitsulo cha SSAW, komanso mzere wathunthu wazitsulo ndi flanges.Zopangira zake zapadera zimaphatikizanso ma alloys apamwamba kwambiri ndi zitsulo zosapanga dzimbiri za austenitic, zopangidwa kuti zikwaniritse zofunikira zama projekiti osiyanasiyana a mapaipi.
Chonde khalani omasuka kutilankhula nafe ngati muli ndi zosowa kapena mafunso okhudza zitsulo zachitsulo.Tikuyembekezera kulandira zambiri zanu ndipo tikuyembekezera kukuthandizani.
