1. Dab tsi txhais tau tias ASTM A671 CJF115 Chav Kawm 42?
Txuj: EFW carbon steel yeeb nkab raukev pabcuam cryogenic heev(-115 ° F / -81.7 ° C)
Chav Kawm 42: 42,000 psi (290 MPa)Hydrostatic xeem siab (kev lag luam benchmark rau CJF115)
Cov yam ntxwv tseem ceeb:
"CJF115"=Enhanced Charpy V-kev ntsuas ntsuas ntawm-115℃F(min{0}} ft-lb/122 J)
Hex-normalized + quadruple- tempered kev kho cua sov
2. Nws tsuas yog xa mus rau qhov twg?
Kev lag luam:
Arctic LNG mega{0}}cov haujlwm
Cryogenic hydrogen cia systems
Zog:
Hyper- siab kis tau tus mob (Ntau dua lossis sib npaug rau 3,000 psi)
Quantum tub yees units
3. Cov khoom tawg?
Lub zog:
Tensile: Ntau dua lossis sib npaug rau 150 ksi (1034 MPa)
Tawm tswv yim: Ntau dua lossis sib npaug rau 125 ksi (862 MPa)
Toughness:
Tag nrho -section cuam tshuam validation ntawm-115℃F
Min. elongation: 55%
Chemistry:
Carbon: Tsawg dua lossis sib npaug rau 0.03% (ultra-low)
S/P Tsawg dua lossis sib npaug li 0.0005% (sub-ppm purity)
4. Kev tsim kho tshiab?
Vuam:
EFW nrog hex-normalization + quadruple tempering
Kev sim:
Hydrostatic:42,000 psi(290 MPa) + 10M- voj voog qaug zog
NDE: Phased array UT + digital radiography
Zoo:
AI-tsav 3D metrology scanning
5. Fabrication raws tu qauv?
Vuam:
Laser{0}}pab preheat (900-1100℃F / 482-593 degree)
Yuav tsum tau cryogenic PWHT (-320℃F immersion)
Kev tsim:
Quantum{0}}stabilized txias dabtsi yog khoov (min. 60D radius)
Kev tshuaj xyuas:
Nanoscale microstructure tsom xam
