ASTM A671 CJF115 Chav Kawm 60 yog dab tsi?
Qhov kev qhia tshwj xeeb no suav nrog hluav taws xob- fusion-welded steel yeeb nkab nrog 2.25% npib tsib xee alloy (CJF115) tsim los rau kev pabcuam huab cua txias mus rau -75℃F (-60℃). Chav Kawm 60 qhia tau hais tias muaj qhov tshwj xeeb siab hydrostatic xeem siab ntawm 60,000 psi (414 MPa), ua rau nws haum rau cov kev thov siab tshaj plaws.
--Cov ntawv thov tseem ceeb yog dab tsi?
Ultra-siab siab LNG kis tau tus mob
Cryogenic ua cov nroj tsuag nrog kev xav tau siab heev
Deepwater roj thiab roj tej yaam num hauv cheeb tsam Arctic
Siab -siab hydrogen cia thiab kev thauj mus los
Tshwj xeeb tub rog thiab aerospace cryogenic systems
--Dab tsi yog qhov tseem ceeb ntawm kev tsim khoom thiab kev sim?
Muab ob npaug rau -welded kev tsim kho nrog tag nrho cov nkag welds
100% radiographic thiab ultrasonic kuaj
Extended Charpy V-kev ntsuas ntsuas ntawm -75℃F (-60 degree)
quenched thiab tempered kev kho cua sov kom pom cov khoom zoo
Kev tswj nruj nruj (tsawg dua lossis sib npaug ntawm 200 HBW) nrog rau PWHT ntxiv
--Dab tsi mechanical zog nws yuav tsum tau ntsib?
Tensile zog: Ntau dua los yog sib npaug rau 75 ksi (517 MPa)
Yield zog: Ntau dua los yog sib npaug rau 45 ksi (310 MPa)
Elongation: Ntau dua lossis sib npaug li 18% hauv 2 ntiv tes
Impact toughness: Yam tsawg kawg 25 ft -lb ntawm qhov ntsuas kub
Hardness: Tsawg dua lossis sib npaug li 200 HBW nrog cov cua sov nruj- cuam tshuam thaj chaw tswj
--Class 60 txawv ntawm cov chav kawm qis li cas?
Chav Kawm 60 sawv cev rau qib siab tshaj plaws hauv qhov kev qhia tshwj xeeb no nrog:
Kev ntsuas siab siab tshaj plaws (60k psi / 414 MPa)
Cov txheej txheem xeem nruj tshaj plaws
Txhim kho cov ntaub ntawv pov thawj xav tau
nruj me ntsis tolerances
Cov ntawv tshaj tawm ntxiv -weld heat treatment mandates
Kev ua tau zoo tshaj plaws hauv kev sib xyaw ua ke siab -siab / qis- qhov kub thiab txias
