1. A671 CC65 Class63 steel yeeb nkab yog dab tsi?
Teb:
A671 CC65 Class63 yog ibhluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabua raws liASTM A671 Cov Lus Qhia Tshwj Xeeb, tsim rauultra-xav tau cryogenic thiab siab - kev pabcuam siab.
"CC65": Qhia qhov tsawg kawg nkaus yield zog ntawm65 ksi (448 MPa).
Chav Kawm 63: Qhiaquenching + tempering (Q&T) nrog kev ntxhov siab ntxiv - lub voj voog nyem, muab qhov siab tshaj plaws toughness ntawm A671 chav kawm.
2. Cov ntawv thov tseem ceeb ntawm A671 CC65 Class63 kav?
Teb:
Cov kav dej no yog qhov tseem ceeb hauv:
LNG cia / thauj(kev pabcuam kub qis rau-320℃F / -196 degree).
Nuclear reactor coolant systems(siab-siab, hluav taws xob-resistant welds).
Chaw / aerospace cryogenic roj kab.
3. Mechanical zog ntawm A671 CC65 Class63?
Teb:
Yield zog: Ntau dua lossis sib npaug rau 65 ksi (448 MPa).
Tensile zog80-100 ksi (550-690 MPa).
Impact Toughness: Charpy V-notch tested at-320℃F / -196 degree(yam tsawg kawg 20 ft-lb absorbed zog).
Hardness: Tsawg dua los yog sib npaug rau 197 HB (kev tswj nruj rau kev sib koom ua ke).
4. Class63 txawv li cas rau lwm chav A671 CC65?
Teb:
Kev kho cua sov: Chav Kawm 63 tau txaisQ&T + kev ntxhov siab ntxiv- lub voj voog nyem, tshaj:
Class61 (austenitized + tempered).
Class62 (ob chav normalized + tempered).
Kev ua tau zoo: Optimal rauhuab cua kub caij tsheb kauj vab thiab dynamic loads.
Nqi: Siab tshaj vim kev ua haujlwm nruj.
5. Kev ua raws cai thiab ntawv pov thawj?
Teb:
Cov qauvASTM A671-25 (kuj kho tshiab), ASME BPVC Tshooj VIII.
Kev sim:
100% UT / RTntawm welds.
Subzero Charpy xeem(-320℃F / -196 degree).
Kev ntsuam xyuas hydrostaticntawm 2x tsim siab.
