ASTM A671 CJE115 Chav Kawm 13 yog dab tsi?A carbon steel yeeb nkabrauqis-kev pabcuam kub, kev sib ntsib:
"CJE115": Hluav taws xob-fusion-welded (EFW) nrogCharpy V- ntsuas qhov cuam tshuam ntawm -115℃F (-81.7 degree).
Chav Kawm 13: Hydrostatic xeem siab ntawm13,000 psi (90 MPa).
Cov ntawv thov tseem ceeb?
Cryogenic systems(LNG / LPG pipelines, kua nitrogen / oxygen cia).
Cov nroj tsuag tub yees(Ammonia / CO₂ piping).
Arctic / subzero infrastructure(offshore platforms, txias- huab cua pipelines).
Cov khoom siv?
Tensile zog: Ntau dua lossis sib npaug ntawm 60 ksi (414 MPa).
Yield zog: Ntau dua lossis sib npaug rau 35 ksi (241 MPa).
Impact toughness: Min.15 ft -lb (20 J)ntawm-115℃F.
Kev kho cua sov: Li qub(yuav tsum tau rau CJE115).
Manufacturing & kuaj?
Vuam: EFW nrog100% radiography(RT) lossis kuaj ultrasonic (UT).
Kev tswj tsis raug: Kho ibASTM A671 Tshooj 12.
Hydrostatic xeem: 13,000 psi (90 MPa) yam tsawg kawg nkaus.
Cov txheej txheem Fabrication?
Preheat200-400℃F (93-204 degree) rau vuam.
PWHT: Pom zoo kom txo kev ntxhov siab.
Txias khoov: Tso cai nrog lub vojvoog Ntau dua lossis sib npaug ntawm 5x txoj kab uas hla.
