1. Dab tsi yog ASTM A671 CJE115 Chav Kawm 23?
Txuj: Hluav taws xob-fusion-welded (EFW) carbon steel yeeb nkab rauultra- kev pabcuam cryogenic tseem ceeb(-115 ° F / -81.7 ° C).
Chav Kawm 23: Hydrostatic xeem siab ntawm23,000 psi (159 MPa)(tus qauv tshiab hauv A671 tus qauv).
Tus cim tseem ceeb:
"CJE115"=Charpy V-notch impact tested at-115℃Fnrog txhim kho min. 20 ft-lb (27 J).
Muab ob npaug rau-kev kho cua sov zoo li qubrau superior grain qauv.
2. Lub hom phiaj daim ntawv thov?
Tom ntej no -gen zog infrastructure:
Ua kua hydrogen export terminals
Qhov chaw tso tawm cryogenic roj systems
Ib puag ncig huab cua:
Sib sib zog nqus- hiav txwv mining siab tsev
Polar LNG ua modules
Nuclear fusion: Cryogenic hlau nplaum muaj
3. Txhim kho cov khoom tshwj xeeb?
Lub zog:
Tensile: Ntau dua lossis sib npaug rau 65 ksi (448 MPa)
Tawm tswv yim: Ntau dua lossis sib npaug rau 40 ksi (276 MPa)
Toughness:
200% cuam tshuam kuaj kev pab cuam ntawm-115℃F
Min. elongation: 25%
Chemistry:
Micro{0}}alloyed nrog Nb/V rau kev tswj cov nplej
Ultra{0}}S / P qis (tsawg dua lossis sib npaug rau 0.025%)
4. Advanced manufacturing raws tu qauv?
Vuam:
EFW nrogphased-array UT + DR radiography.
Kev sim:
Hydrostatic:23,000 psi(159 MPa) + cyclic siab ntsuas.
100% automated dimensional scanning.
Traceability:
Blockchain{0}} raws li cov ntaub ntawv pov thawj.
5. Txiav - ntug kev cai?
Vuam:
Laser{0}}pab preheat (250–450℃F / 121–232℃).
Yuav tsum tau PWHT nrog digital temp cav.
Kev tsim:
AI- saib xyuas txias khoov (min. 8D radius).
Kev sau kub yuav tsum tau rov-normalization + retesting.
Kev tswj tsis raug:
Tsis muaj kev sib tsoo kho rau ntawm niam txiv cov khoom.
