Ku-ASTM A213, ngaphezu kwezidingo zezakhiwo eziqinile nobulukhuni, izivivinyo ezilandelayo nazo ziyadingeka: Ukuhlolwa Kwe-Flattening kanye Nokuhlolwa Kwe-Bend.
I-ASTM A335 P22(ASME SA335 P22) iyisevisi yokushisa ephezulu engenamthungo ipayipi lensimbi ye-chromium-molybdenum, esetshenziswa kabanziama-boilers, izifudumezi ezinkulu, nokushisaabashintshisani.
Iqukethe 1.90%ukuya ku-2.60% chromium kanye no-0.87% kuya ku-1.13% molybdenum, inokumelana nokushisa okuhle kakhulu, futhi ilungele ukugoba, ukugoba, noma ukwakheka okufanayo.
Inombolo ye-UNS: K21590.
I-ASTM A335 iwukucaciswa okujwayelekile kwamapayipi ensimbi angenamthungo e-ferritic alloy ahloselwe isevisi yezinga lokushisa eliphezulu. Isetshenziswa kabanzi kuma-boilers, ama-superheaters, ama-heaters, nezinye izinhlelo zokusebenza ezisebenza ngaphansi kwezimo ezishisa kakhulu nezinomfutho ophezulu. Ngaphezu kweBanga P22, amanye amabanga ajwayelekile e-alloy afakaI-P5 (UNS K41545), I-P9 (UNS K90941), I-P11 (UNS K11597), futhiI-P91 (UNS P90901).
Umkhiqizi kanye Nesimo
Amapayipi ensimbi e-ASTM A335 P22 azokwenziwa ngenqubo engenamthungo futhi azoqedwa ngokushisa noma adonswe ngokubanda ngokwelashwa kokuqeda.
Amapayipi ensimbi angenamthungoamapayipi angenawo ama-welds, ahlinzeka ngamapayipi ensimbi e-P22 ngokuzinza okuphezulu nokuthembeka ezindaweni ezishisa kakhulu nezinomfutho ophezulu.
Ukwelashwa Kokushisa
Amapayipi ensimbi e-P22 kufanele ashise futhi aphathwe ngokushisisa ngokufaka i-annealing egcwele, i-isothermal annealing, noma ngokujwayelekile kanye nokufudumeza.
| Ibanga | Uhlobo lokuphatha ukushisa | I-Subcritical Annealing noma Izinga lokushisa |
| I-ASTM A335 P22 | umgodi ogcwele noma we-isothermal | - |
| normalize futhi uthukuthele | 1250 ℉ [675 ℃] iminithi |
I-Chromium (Cr) ne-molybdenum (Mo) ama-elementi abalulekile engxubevange kunsimbi ye-P22, athuthukisa amandla ezinga lokushisa eliphezulu, ukumelana ne-oxidation, nokuqina. Ukwakheka kwamakhemikhali okukhethekile kukhonjisiwe ngezansi:
| Ibanga | Ukwakhiwa, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 ubuningi | 0.025 ubuningi | 0.50 ubuningi | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Ukuhlolwa kwempahla eyimishini ye-P22 kuzokwenziwa ngokuhambisana nezidingo ezifanele ze-ASTM A999.
I-Tensile Properties
| Ibanga | I-ASTM A335 P22 | |
| Amandla aqinile, imiz | 60 ksi [415 MPa] | |
| Amandla okukhiqiza, imiz | 30 ksi [205 MPa] | |
| Ubude ku-2 in. noma 50 mm (noma 4D), min | I-Longitudinal | Phenduka |
| Ubude obuncane obuyisisekelo bodonga 5/16 ku-[8 mm] nangaphezulu ngogqinsi, ukuhlolwa kwemicu, kanye nawo wonke amasayizi amancane ahlolwe esigabeni esigcwele. | 30% | 20% |
| Lapho kusetshenziswa indinganiso eyindilinga engu-2 noma engu-50 mm ubude begeji noma isampula yosayizi omncane ngokulinganayo enobude begeji obulingana no-4D (izikhathi ezingu-4 ububanzi) | 22% | 14% |
| Ekuhlolweni kwama-strip kuzokwenziwa imali ebanjwayo ngo-1/32 ngakunye ku-[0.8 mm] ekujikeni kodonga ngaphansi kuka-1/32 in. | 1.50% | 1.00% |
Ukuqina Izakhiwo
Izinga le-ASTM A335 alicacisi izidingo ezithile zokuqina zamapayipi ensimbi e-P22.
Ezinye Izinto Zokuhlola
Ukubekezelela Ububanzi
Kumapayipi a-odwe yi-NPS [DN] noma ububanzi bangaphandle, ukuhluka kobubanzi obungaphandle akumele kudlule izimfuneko eziboniswe kuthebula elingezansi:
| I-NPS [DN] Umklami | Izinguquko Ezivumelekile | |
| phakathi. | mm | |
| 1/8 kuya ku-1 1/2 [6 kuya ku-40], intshi. | ±1/64 [0.015] | ±0.40 |
| Ngaphezu kuka-1 1/2 kuya ku-4 [40 kuya ku-100], intshi. | ±1/32 [0.031] | ±0.79 |
| Ngaphezu kuka-4 kuya ku-8 [100 kuya ku-200], intshi. | -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 |
| Ngaphezu kwe-12 [300] | ±1 % wobubanzi obushiwo bangaphandle | |
Epayipini eli-odwe libe phakathi kobubanzi, ububanzi bangaphakathi akumele buhluke ngaphezu kuka-1% ukusuka kububanzi obushiwo bangaphakathi.
Ukubekezelela Ukuqina Kwezindonga
Ngokungeziwe emkhawulweni osobala wokujiya kodonga lwepayipi obekwe umkhawulo wesisindo ku-ASTM A999, ukujiya kodonga lwepayipi kunoma iyiphi indawo kufanele kube ngaphakathi kokubekezelela okuchazwe kuthebula elingezansi:
| I-NPS [DN] Umklami | Ukubekezelelana |
| 1/8 kuya ku-2 1/2 [6 kuya ku-65] kuhlanganisa. zonke izilinganiso ze-t/D | -12.5% ~ +20.0% |
| Ngaphezulu kokungu-2 1/2 [65], t/D ≤ 5% | -12.5% ~ +22.5% |
| Ngaphezulu kuka-2 1/2, t/D ＞ 5% | -12.5% ~ +15.0% |
| 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 |
Okubalulekile:I-ASTM A335 P22 amapayipi ensimbi angenamthungo nokufakwa;
Usayizi:1/8" kuya ku-24", noma ngokwezifiso ngokwezidingo zakho;
Ubude:Ubude obungahleliwe noma ukusika ukuze u-oda;
Ukupakishwa:Ukugqoka okumnyama, iziphetho eziboshwe, izivikeli zokuphela kwamapayipi, amakhreyithi enziwe ngokhuni, njll.
Ukusekela:Isitifiketi se-IBR, ukuhlolwa kwe-TPI, i-MTC, ukusika, ukucubungula, nokwenza ngokwezifiso;
I-MOQ:1 m;
Imigomo Yokukhokha:T/T noma L/C;
Inani:Xhumana nathi ukuze uthole amanani akamuva epayipi lensimbi le-T11;
