1. Dab tsi txhais tau tias ASTM A671 CJF115 Chav Kawm 40?
Txuj: EFW carbon steel yeeb nkab raukev pabcuam cryogenic heev(-115 ° F / -81.7 ° C)
Chav Kawm 40: 40,000 psi (276 MPa)Hydrostatic xeem siab (kev lag luam siab tshaj plaws rau qib CJF115)
Cov yam ntxwv tseem ceeb:
"CJF115"=Enhanced Charpy V-kev ntsuas ntsuas ntawm-115℃F(min{0}} ft-lb/108 J)
Quintuple-normalized + triple-tempered kev kho cua sov
2. Lub hom phiaj daim ntawv thov?
Kev lag luam:
LNG mega{0}} tsheb ciav hlau thiab xa tawm cov davhlau ya nyob twg
Cryogenic cia tank piping
Zog:
Ultra-siab- kev ua haujlwm siab roj
Subzero tub yees systems
3. Khoom specifications?
Lub zog:
Tensile: Ntau dua lossis sib npaug rau 140 ksi (965 MPa)
Tawm tswv yim: Ntau dua lossis sib npaug rau 115 ksi (793 MPa)
Toughness:
Tag nrho - lub cev cuam tshuam daim ntawv qhia ntawm-115℃F
Min. elongation: 50%
Chemistry:
Carbon: Tsawg dua lossis sib npaug rau 0.05%
S / P Tsawg dua lossis sib npaug li 0.001%
4. Kev tsim khoom siv tshuab?
Vuam:
EFW nrog quintuple normalization + triple tempering
Kev sim:
Hydrostatic:40,000 psi(276 MPa)
NDE: RT + UT + TOFD + PAUT (100% kev pab them nqi)
Zoo:
3D laser -scanned dimensional verification
5. Fabrication xav tau?
Vuam:
Preheat: 800-1000 ° F (427-538 ° C)
Yuav tsum tau PWHT + ncej-weld normalization
Kev tsim:
Khoov txias (min. 50D radius)
Kev tshuaj xyuas:
Tag nrho NDE + hardness + grain qauv tsom xam
