Ku-ASTM A213, ngaphezu kwezidingo zezakhiwo zokubopha kanye nokuqina, kudingeka nokuhlolwa okulandelayo: Ukuhlolwa Kokugoba kanye Nokuhlolwa Kokugoba.
I-ASTM A335 P22(ASME SA335 P22) iyipayipi lensimbi ye-chromium-molybdenum alloy elisebenza ngokushisa okuphezulu, elisetshenziswa kabanzi e-USamabhoyila, ama-superheater, kanye nokushisaabashintshi.
Iqukethe i-1.90%kuya ku-2.60% chromium kanye no-0.87% kuya ku-1.13% molybdenum, inokumelana okuhle kakhulu nokushisa, futhi ifaneleka futhi ekusebenzeni kokugoba, ukufulela, noma okufanayo.
Inombolo ye-UNS: K21590.
I-ASTM A335 iyincazelo ejwayelekile yamapayipi ensimbi e-ferritic alloy-steel angenamthungo ahloselwe isevisi yokushisa okuphezulu. Isetshenziswa kabanzi kuma-boiler, ama-superheater, ama-heat exchanger, nezinye izinhlelo zokusebenza ezisebenza ngaphansi kwezimo zokushisa okuphezulu kanye nokucindezela okuphezulu. Ngaphezu kwe-Grade P22, amanye amazinga e-alloy avamile afaka phakathiI-P5 (UNS K41545), I-P9 (UNS K90941), I-P11 (UNS K11597), futhiI-P91 (UNS P90901).
Umkhiqizi kanye Nesimo
Amapayipi ensimbi e-ASTM A335 P22 kumele enziwe ngenqubo engenamthungo futhi kufanele aqedwe ngokushisa noma adonswe ngokubandayo ngokwelashwa kokuqeda.
Amapayipi ensimbi angenamthungoamapayipi angenazo izindwangu zokushisela, okunikeza amapayipi ensimbi e-P22 ukuzinza nokuthembeka okuphezulu ezindaweni ezinokushisa okuphezulu kanye nokucindezela okuphezulu.
Ukwelashwa Kokushisa
Amapayipi ensimbi e-P22 kufanele aphinde afudumale futhi aphathwe ngokushisa ngokufaka i-full annealing, i-isothermal annealing, noma ngokulungisa nokulungisa.
| Ibanga | Uhlobo lokwelapha ukushisa | Ukufakwa Kwezinga Elingaphansi Kokubalulekile noma Ukushisa |
| I-ASTM A335 P22 | i-anneal egcwele noma engeyona eyethermal | — |
| ukwenza ngokwejwayelekile kanye nokushisa | 1250 ℉ [675 ℃] iminithi |
I-Chromium (Cr) kanye ne-molybdenum (Mo) ziyizinto ezibalulekile zokuhlanganisa insimbi ye-P22, ezithuthukisa amandla okushisa aphezulu, ukumelana nokushiswa kwe-oxidation, kanye nokuqina. Ukwakheka kwamakhemikhali athile kuboniswe ngezansi:
| Ibanga | Ukwakheka, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | Ubuningi obungu-0.025 | Ubuningi obungu-0.025 | Umkhawulo ongu-0.50 | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Ukuhlolwa kwempahla yemishini ye-P22 kufanele kwenziwe ngokuhambisana nezidingo ezifanele ze-ASTM A999.
Izakhiwo Zokunamathela
| Ibanga | I-ASTM A335 P22 | |
| Amandla okudonsa, ubuncane | 60 ksi [415 MPa] | |
| Amandla okukhiqiza, ubuncane | 30 ksi [205 MPa] | |
| Ukwelulwa okungu-2 in. noma 50 mm (noma 4D), min | I-Longitudinal | I-Transverse |
| Ukwelulwa okuncane okuyisisekelo kodonga oluyi-5/16 in [8 mm] nangaphezulu ngobukhulu, ukuhlolwa kwe-strip, kanye nabo bonke osayizi abancane abahlolwe esigabeni esigcwele | 30% | 20% |
| Uma kusetshenziswa isampula ejwayelekile eyindilinga engu-2 intshi noma engu-50 mm ubude begeji noma isampula encane ngokulingana enobude begeji obulingana no-4D (ububanzi obuphindwe kane) | 22% | 14% |
| Kuzivivinyo ze-strip, kufanele kukhishwe ukwehla ngakunye okungu-1/32 ku-[0.8 mm] kobukhulu bodonga obungaphansi kuka-1/32 in. [8 mm] kusukela ekunwetshweni okuyisisekelo okuncane kwamaphuzu alandelayo amaphesenti. | 1.50% | 1.00% |
Izakhiwo Zokuqina
Izinga le-ASTM A335 alizichazi izidingo ezithile zobulukhuni zamapayipi ensimbi e-P22.
Ezinye Izinto Zokuhlola
Ukubekezelelana kobubanzi
Kumapayipi a-odwe yi-NPS [DN] noma ububanzi bangaphandle, ukwehluka kobubanzi bangaphandle akumele kudlule izidingo eziboniswe kuthebula elingezansi:
| Umklami we-NPS [DN] | Izinguquko Ezivumelekile | |
| ku. | mm | |
| 1/8 kuya ku-1 1/2 [6 kuya ku-40], intshi. | ±1/64 [0.015] | ±0.40 |
| Ngaphezu kwe-1 1/2 kuya ku-4 [40 kuya ku-100], intshi. | ±1/32 [0.031] | ±0.79 |
| Ngaphezu kwamasentimitha angu-4 kuya kwangu-8 [100 kuya kwangu-200]. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Ngaphezu kuka-8 kuya ku-12 [200 kuya ku-300], intshi. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Ngaphezulu kwe-12 [300] | ±1% yobubanzi obungaphandle obucacisiwe | |
Uma ipayipi lihlelwe ububanzi bangaphakathi, ububanzi bangaphakathi akufanele buhluke ngaphezu kwe-1% kunobubanzi bangaphakathi obubekiwe.
Ukubekezelela Ubukhulu Bodonga
Ngaphezu komkhawulo ongabonakali wobukhulu bodonga lwepayipi obekwe umkhawulo wesisindo ku-ASTM A999, ubukhulu bodonga lwepayipi nganoma yisiphi isikhathi kufanele bube ngaphakathi kokubekezelelana okuchazwe kuthebula elingezansi:
| Umklami we-NPS [DN] | Ukubekezelelana |
| 1/8 kuya ku-2 1/2 [6 kuya ku-65] kufaka phakathi zonke izilinganiso ze-t/D | -12.5 % ~ +20.0 % |
| Ngaphezulu kuka-2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Ngaphezulu kuka-2 1/2, t/D ＞ 5% | -12.5 % ~ +15.0 % |
| I-ASME | I-ASTM | EN | I-DIN | I-JIS |
| I-ASME SA335 P22 | I-ASTM A213 T22 | I-DIN 10216-2 10CrMo9-10 | I-DIN 17175 10CrMo9-10 | I-JIS G 3458 STPA25 |
Izinto:Amapayipi ensimbi angenamthungo e-ASTM A335 P22 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-T11;
