I-ASTM A213 T91(ASME SA213 T91) ipayipi lensimbi elingenamthungo elisetshenziswa kakhulu eliqukethe u-8.0% kuya ku-9.5% Cr, u-0.85% kuya ku-1.05% Mo, nezinye izinto ezincane ezixubayo.
Lezi zengezo zokuhlanganisa zinikeza amashubhu ensimbi e-T91 amandla amahle kakhulu okushisa okuphezulu, ukumelana nokuqhekeka, kanye nokumelana nokushiswa kwe-oxidation, okwenza asetshenziswe kabanzi kuma-boiler, ama-superheater, kanye nama-heat exchanger asebenza ngaphansi kwezimo zokushisa okuphezulu kanye nokucindezela okuphezulu.
Inombolo ye-UNS: K90901.
Amapayipi ensimbi e-T91 angahlukaniswa ngezigabaUhlobo 1futhiUhlobo 2, umehluko omkhulu uwukulungiswa okuncane kokwakheka kwamakhemikhali.
Uhlobo 2 lunezidingo eziqinile zezinto zamakhemikhali; isibonelo, okuqukethwe yi-S kuncishisiwe kusuka ku-0.010% ku-Type 1 kuya ku-0.005%, kanti imikhawulo ephezulu nephansi yezinye izinto nayo iyalungiswa.
Uhlobo 2 luhloselwe ikakhulukazi izindawo ezishisa kakhulu noma ezigqwalisayo, ezihlinzeka ngokuqina okuthuthukisiwe kanye nokumelana nokukhukhuleka.
Okulandelayo, ake sibheke kabanzi izidingo zokwakheka kwamakhemikhali zohlobo 1 nohlobo 2 ekuhlaziyweni komkhiqizo.
| Ukwakheka, % | Uhlobo 1 lwe-ASTM A213 T91 | Uhlobo 2 lwe-ASTM A213 T91 |
| C | 0.07 ~ 0.14 | 0.07 ~ 0.13 |
| Mn | 0.30 ~ 0.60 | 0.30 ~ 0.50 |
| P | Umkhawulo ongu-0.020 | |
| S | Umkhawulo ongu-0.010 | Umkhawulo ongu-0.005 |
| Si | 0.20 ~ 0.50 | 0.20 ~ 0.40 |
| Ni | Ubuningi obungu-0.40 | Ubuningi obungu-0.20 |
| Cr | 8.0 ~ 9.5 | |
| Mo | 0.85 ~ 1.05 | 0.80 ~ 1.05 |
| V | 0.18 ~ 0.25 | 0.16 ~ 0.27 |
| B | — | Umkhawulo ongu-0.001 |
| Nb | 0.06 ~ 0.10 | 0.05 ~ 0.11 |
| N | 0.030 ~ 0.070 | 0.035 ~ 0.070 |
| Al | Umkhawulo ongu-0.02 | Umkhawulo ongu-0.020 |
| W | — | Umkhawulo ongu-0.05 |
| Ti | Umkhawulo ongu-0.01 | |
| Zr | Umkhawulo ongu-0.01 | |
| Ezinye Izinto | — | I-Cu: ubuningi obungu-0.10 Isilinganiso: 0.003 ubuningi Isilinganiso: 0.010 ubuningi Njengoba: 0.010 ubuningi Akukho: 4.0 min |
Uhlobo lwe-T91 1 no-2 lunomehluko omncane ekwakhiweni kwamakhemikhali, kodwa banezidingo ezifanayo zezakhiwo zemishini kanye nokwelashwa kokushisa.
Izakhiwo Zokunamathela
| Ibanga | Amandla Okudonsa | Amandla Okukhiqiza | Ukwelulwa ngamasentimitha ama-2 noma ama-50 mm |
| Uhlobo lwe-T91 1 no-2 | 85 ksi [585 MPa] min | 60 ksi [415 MPa] min | 20% iminithi |
Izakhiwo Zokuqina
| Ibanga | UBrinell / uVickers | Rockwell |
| Uhlobo lwe-T91 1 no-2 | 190 kuya ku-250 HBW 196 kuya ku-265 HV | 90 HRB kuya ku-25 HRC |
Ukuhlolwa Kokuthamba
Indlela yokuhlola kufanele ihambisane nezidingo ezifanele zeSigaba 19 se-ASTM A1016.
Ukuhlolwa okukodwa kokuthamba kufanele kwenziwe kumasampula avela ekugcineni ngakunye kwepayipi elilodwa eliqediwe, hhayi elisetshenziselwa ukuhlolwa kokufutha, kusuka kuhlu ngalunye.
Ukuhlolwa Kokuvutha
Indlela yokuhlola kufanele ihambisane nezidingo ezifanele zeSigaba 22 se-ASTM A1016.
Ukuhlolwa okukodwa kokuvutha kufanele kwenziwe kumasampula avela ekugcineni ngakunye kwepayipi elilodwa eliqediwe, hhayi elisetshenziselwa ukuhlolwa kokusicaba, kusuka kuhlu ngalunye.
Umkhiqizi kanye Nesimo
Amashubhu e-ASTM A213 T91 kumele enziwe ngenqubo engenamthungo futhi kufanele aqedwe ngokushisa noma ngokubandayo, njengoba kudingeka.
Amapayipi ensimbi angenamthungo, ngesakhiwo sazo esiqhubekayo nesingenawo ama-weld, zisabalalisa ukucindezeleka ngokulinganayo ngaphansi kwezimo zokushisa eziphakeme, ukucindezela okuphezulu, kanye nezimo zokulayisha eziyinkimbinkimbi, okunikeza amandla aphezulu, ukuqina, kanye nokumelana nokukhathala.
Ukwelashwa Kokushisa
Wonke amapayipi ensimbi e-T91 kufanele aphinde afudumale futhi aphathwe ngokushisa ngokuhambisana nezidingo ezichazwe etafuleni.
Ukwelashwa ngokushisa kufanele kwenziwe ngokwehlukana futhi ngaphezu kokushisa ukuze kufakwe ukushisa.
| Ibanga | Uhlobo lokwelapha ukushisa | Ukwelashwa Kokuqinisa Impilo/Isixazululo | Ukufakwa Kwezinga Elingaphansi Kokubalulekile noma Ukushisa |
| Uhlobo lwe-T91 1 no-2 | ukwenza ngokwejwayelekile kanye nokushisa | 1900 - 1975 ℉ [1040 - 1080 ℃] | 1350 - 1470 ℉ [730 - 800 ℃] |
Kwezinto ze-Grade T91 Type 2, ukwelashwa kokushisa kuzoqinisekisa ukuthi ngemuva kokupholisa izinga lokupholisa kusuka ku-1650 °F kuya ku-900 °F [900 °C kuya ku-480 °C] alinciphisi ngaphezu kuka-9 °F/min [5 °C/min].
Ubukhulu bamapayipi e-T91 kanye nobukhulu bodonga ngokuvamile kufakwe ububanzi bangaphakathi obusukela ku-3.2 mm kuya kububanzi bangaphandle obungu-127 mm, kanye nobukhulu bodonga obuncane obusukela ku-0.4 mm kuya ku-12.7 mm.
Amanye amasayizi amapayipi ensimbi e-T91 nawo anganikezwa, uma nje zonke ezinye izidingo ze-ASTM A213 zihlangatshezwa.
Ukubekezelelana kobukhulu be-T91 kuyafana nokwe-T11. Ukuze uthole imininingwane, ungabheka ku-Ubukhulu kanye nokubekezelelana kwe-T11.
| I-UNS | I-ASME | I-ASTM | EN | GB |
| K90901 | I-ASME SA213 T91 | I-ASTM A335 P91 | I-EN 10216-2 X10CrMoVNb9-1 | I-GB/T 5310 10Cr9Mo1VNbN |
Umkhiqizo:Amapayipi ensimbi angenamthungo e-ASTM A213 T91 Uhlobo 1 nohlobo 2 kanye nokufakwa kwawo;
Usayizi:1/8" kuya ku-24", noma ngezifiso ngokwezidingo zakho;
Ubude:Ubude obungahleliwe noma ukusika ngokwe-oda;
Ukupakisha:Ukugqoka okumnyama, iziphetho ezigobile, izivikelo zokuphela kwamapayipi, amabhokisi okhuni, njll.
Ukusekelwa:isitifiketi se-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukucubungula, kanye nokwenza ngezifiso;
I-MOQ:1 m;
Imigomo Yokukhokha:I-T/T noma i-L/C;
Intengo:Xhumana nathi ukuthola amanani akamuva epayipi lensimbi le-T91.
