I-ASTM A335 P5, eyaziwa nangokuthi i-ASME SA335 P5, iyipayipi lensimbi elinengxubevange ephansi eliklanyelwe isevisi eshisa kakhulu.
I-P5 iqukethe u-4.00 ~ 6.00 % chromium no-0.45 ~ 0.65% molybdenum, enikeza amandla amahle kakhulu nokusebenza ngaphansi kwamazinga okushisa aphakeme nezingcindezi. Isetshenziswa kabanzi kumishini efana nama-boilers, ama-superheaters, nama-heaters.
Igama layo le-UNS yi-K41545.
Umkhiqizi kanye Nesimo
Amapayipi ensimbi e-ASTM A335 P5 azokwenziwa ngenqubo engenamthungo futhi azoshiswa aqedwe noma adonswe kubanda, njengoba kucacisiwe.
Amapayipi aqedwe ukushisa amapayipi ensimbi angenamthungo akhiqizwa ngamabhilidi ngokusebenzisa izinqubo zokufudumeza nokugingqika, kuyilapho amapayipi adonswa ngokubanda angamapayipi ensimbi angenamthungo akhiqizwa ngokudweba amapayipi aphelile ukushisa ekamelweni lokushisa.
Uma ungathanda ukufunda kabanzi mayelana nezinqubo zokukhiqiza zalezi zinhlobo ezimbili zamapayipi ensimbi angenamthungo, ungachofoza“Iyini i-Seamless Steel Pipe?”ukuze uthole imininingwane eyengeziwe.
Ukwelashwa Kokushisa
Amapayipi e-ASTM A335 P5 kufanele ashiselwe kabusha ukuze alashwe futhi aphathwe ukushisaukukhishwa okugcwele noma kwe-isothermal or normalizing kanye nokushisa.
Izidingo eziqondile zikhonjiswe kuthebula elingezansi:
| Ibanga | Uhlobo lokuphatha ukushisa | I-Subcritical Annealing noma Izinga lokushisa |
| I-ASTM A335 P5 | umgodi ogcwele noma we-isothermal | - |
| normalize futhi uthukuthele | 1250 ℉ [675 ℃] iminithi |
Imisebenzi ehilela ukushisisa amapayipi ensimbi ngaphezu kwezinga lokushisa lawo elibucayi, njengokushisela, i-flanging, nokugoba okushisayo, kufanele kulandelwe ukwelashwa okufanele kokushisa.
Izindlela zokuhlola ukwakheka kwamakhemikhali kanye nezakhiwo zemishini zamapayipi ensimbi e-P5 kufanele zihambisane nezinhlinzeko ezifanele ze-ASTM A999.
| Ibanga | Ukwakhiwa, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | 0.15 ubuningi | 0.30 ~ 0.60 | 0.025 ubuningi | 0.025 ubuningi | 0.50 ubuningi | 4.00 ~ 6.00 | 0.45 ~ 0.65 |
I-Tensile Properties
| Ibanga | Amandla Okuqina | Isivuno Amandla | Ukwelula ku-2 in. noma 50 mm |
| P5 | 60 ksi [415 MPa] imiz | 30 ksi [205 MPa] imiz | 30% min |
Ukuqina Izakhiwo
Izinga le-ASTM A335 alicacisi noma yiziphi izidingo zokuqina zamapayipi ensimbi e-P5.
Ukuhlola Ukucaba
Ukuhlolwa kokucaba kuzokwenziwa futhi kuthathwe isampula ngokuhambisana nezidingo ezifanele ze-ASTM A999, futhi iziphetho zamapayipi anqanyuliwe zingasetshenziswa njengezibonelo.
Bend Test
Epayipini elinobubanzi obungaphezu kwe-NPS 25 futhi isilinganiso saso sobubanzi bodonga obungu-7.0 noma ngaphansi lizohlolwa ngokugoba esikhundleni sokuhlolwa kokucaba.
Izibonelo zokuhlola ukugoba zizogotshwa endaweni yokushisa yegumbi ngo-180 ° ngaphandle kokuqhekeka ngaphandle kwengxenye egobile. Ububanzi bangaphakathi bokugoba buzoba yiyimitha elingu-1 [25 mm].
Ukubukeka
Ingaphezulu lepayipi lensimbi lizoba bushelelezi futhi lilingane, lingabi nama-scabs, i-seams, ama-laps, izinyembezi, noma ama-slivers.
Uma ukujula kwanoma isiphi isici kudlula u-12.5% wogqinsi oluvamile lodonga noma uma ukujiya kodonga olusele kungaphansi kogqinsi olubekiwe, indawo izobhekwa njengengenasici.
Lapho ukuqina kodonga olusele kusengaphakathi kwemingcele ebekiwe, isici singasuswa ngokugaya.
Uma ubukhulu bodonga obusele bungaphansi kwemfuneko encane, isici sizolungiswa ngokushisela noma sisuswe ngokusika.
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 | Ukubekezelela, % ifomu Licacisiwe |
| 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 |
| t = Ukuqina Kodonga Okucacisiwe; D = Ububanzi obucacisiwe bangaphandle. | |
Amapayipi ensimbi e-ASTM A335 P5 asetshenziswa ngokuyinhloko ezinhlelweni zamapayipi ezisebenza ngaphansi kwezimo ezishisa kakhulu nezinomfutho ophezulu.
Ngenxa yokumelana kwawo nezinga lokushisa eliphezulu okuhle kakhulu kanye nezakhiwo zemishini, asetshenziswa kakhulu embonini ye-petrochemical, ekhiqiza amandla, kanye nezimboni zokucwenga.
Izinhlelo zokusebenza ezithize zifaka:
- Ukufakwa kwe-boiler
- Izishintshi zokushisa
- Imigqa yenqubo ye-Petrochemical
- Amapayipi eplanti yamandla
- Izitsha zomfutho we-boiler
| ASME | I-ASTM | EN | I-JIS |
| I-ASME SA335 P5 | I-ASTM A213 T5 | EN 10216-2 X11CrMo5+I | I-JIS G 3458 STPA25 |
Okubalulekile:I-ASTM A335 P5 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 wakamuva wepayipi lensimbi le-T11.
