ASTM A213 T91(ASME SA213 T91) ndi chitoliro chachitsulo chopanda msoko chomwe chimagwiritsidwa ntchito kwambiri chokhala ndi 8.0% mpaka 9.5% Cr, 0.85% mpaka 1.05% Mo, ndi zinthu zina zazing'ono zopangira.
Zowonjezera izi zimapatsa machubu achitsulo a T91 mphamvu yabwino kwambiri yotentha, kukana kugwedezeka, komanso kukana okosijeni, zomwe zimapangitsa kuti azigwiritsidwa ntchito kwambiri mu ma boiler, ma superheater, ndi ma heat exchanger omwe amagwira ntchito pansi pa kutentha kwambiri komanso kuthamanga kwambiri.
Nambala ya UNS: K90901.
Mapaipi achitsulo a T91 akhoza kugawidwa m'magulu awiri:Mtundu 1ndiMtundu Wachiwiri, kusiyana kwakukulu kuli kusintha pang'ono kwa kapangidwe ka mankhwala.
Mtundu wachiwiri uli ndi zofunikira zolimba pa zinthu za mankhwala; mwachitsanzo, kuchuluka kwa S kumachepetsedwa kuchoka pa 0.010% mu Mtundu 1 kufika pa 0.005%, ndipo malire apamwamba ndi otsika a zinthu zina amasinthidwanso.
Mtundu wachiwiri umapangidwira makamaka malo otentha kwambiri kapena owononga, zomwe zimapangitsa kuti zikhale zolimba komanso zotsutsana ndi kukwera kwa nthaka.
Kenako, tiyeni tiwone bwino zofunikira pa kapangidwe ka mankhwala a Mtundu 1 ndi Mtundu 2 pakusanthula kwa mankhwala.
| Kapangidwe, % | Mtundu 1 wa ASTM A213 T91 | Mtundu wa ASTM A213 T91 2 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | 0.020 pasadakhale | |
| S | 0.010 payokha | 0.005 payokha |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | 0.40 pasadakhale | 0.20 payokha |
| Cr | 8.0 ~ 9.5 | |
| Mo | 0.85 ~ 1.05 | 0.80 ~ 1.05 |
| V | 0.18 ~ 0.25 | 0.16 ~ 0.27 |
| B | — | 0.001 payokha |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | 0.02 payokha | 0.020 pasadakhale |
| W | — | 0.05 payokha |
| Ti | 0.01 payokha | |
| Zr | 0.01 payokha | |
| Zinthu Zina | — | Cu: 0.10 pazipita Sb: 0.003 payokha Kuchuluka: 0.010 Monga: 0.010 pasadakhale N/Al: Mphindi 4.0 |
Mitundu ya T91 1 ndi 2 ili ndi kusiyana pang'ono pa kapangidwe ka mankhwala, koma imagawana zofunikira zomwezo pa kapangidwe ka makina ndi chithandizo cha kutentha.
Katundu Wokoka
| Giredi | Kulimba kwamakokedwe | Mphamvu Yopereka | Kutalikitsa mu mainchesi awiri kapena 50 mm |
| Mtundu wa T91 1 ndi 2 | 85 ksi [585 MPa] mphindi | 60 ksi [415 MPa] mphindi | Mphindi 20% |
Katundu Wolimba
| Giredi | Brinell / Vickers | Rockwell |
| Mtundu wa T91 1 ndi 2 | 190 mpaka 250 HBW 196 mpaka 265 HV | 90 HRB mpaka 25 HRC |
Mayeso Ophwanyika
Njira yoyesera iyenera kutsatira zofunikira za Gawo 19 la ASTM A1016.
Kuyesa kumodzi kosalala kuyenera kupangidwa pa zitsanzo kuchokera kumapeto onse a chubu chimodzi chomalizidwa, osati chomwe chimagwiritsidwa ntchito poyesa kuyatsa, kuchokera ku gawo lililonse.
Mayeso Oyaka
Njira yoyesera iyenera kutsatira zofunikira za Gawo 22 la ASTM A1016.
Kuyesa kamodzi koyatsa moto kuyenera kupangidwa pa zitsanzo kuchokera kumapeto onse a chubu chimodzi chomalizidwa, osati chomwe chimagwiritsidwa ntchito poyesa kupyapyala, kuchokera ku gawo lililonse.
Wopanga ndi Mkhalidwe
Machubu a ASTM A213 T91 ayenera kupangidwa ndi njira yopanda msoko ndipo ayenera kumalizidwa ndi kutentha kapena kuzizira, monga momwe akufunira.
Mapaipi achitsulo chosasunthika, yokhala ndi kapangidwe kake kosalekeza komanso kopanda kupotoka, imagawa kupsinjika mofanana pansi pa kutentha kwambiri, kupanikizika kwambiri, komanso mikhalidwe yovuta yonyamula katundu, zomwe zimapangitsa kuti ikhale yolimba, yolimba, komanso yolimba.
Kutentha Chithandizo
Mapaipi onse achitsulo a T91 ayenera kutenthedwanso ndi kutenthedwa motsatira zofunikira zomwe zafotokozedwa patebulo.
Kutentha kuyenera kuchitika padera komanso kuwonjezera pa kutentha kuti kukhale kotentha.
| Giredi | Mtundu wa chithandizo cha kutentha | Chithandizo cha Austenitizing / Solution | Kuzizira kapena Kutentha Kosafunikira |
| Mtundu wa T91 1 ndi 2 | kusinthasintha ndi kusinthasintha | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Pa zinthu za mtundu wa 2 za mtundu wa T91, kutentha kuyenera kuonetsetsa kuti kutentha kozizira kuyambira 1650 °F mpaka 900 °F [900 °C mpaka 480 °C] sikuchepera 9 °F/min [5 °C/min].
Kukula kwa machubu a T91 ndi makulidwe a makoma nthawi zambiri amakhala ndi mainchesi amkati kuyambira 3.2 mm mpaka mainchesi akunja a 127 mm, ndipo makulidwe a makoma osachepera kuyambira 0.4 mm mpaka 12.7 mm.
Mapaipi ena achitsulo a T91 amathanso kuperekedwa, bola ngati zofunikira zina zonse za ASTM A213 zakwaniritsidwa.
Kulekerera kwa T91 ndi kofanana ndi kwa T11. Kuti mudziwe zambiri, mutha kuwonaMiyeso ndi Kulekerera kwa T11.
| UNS | ASME | ASTM | EN | GB |
| K90901 | ASME SA213 T91 | ASTM A335 P91 | EN 10216-2 X10CrMoVNb9-1 | GB/T 5310 10Cr9Mo1VNbN |
Chogulitsa:Mapaipi ndi zolumikizira zachitsulo zopanda msoko za ASTM A213 T91 Mtundu 1 ndi Mtundu 2;
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 mapaipi achitsulo a T91.
