A662 Qib C Cov Tshuaj Muaj Tshuaj
| A662 Qib C Cov Tshuaj Muaj Tshuaj | |||||
| Teem nqi | Lub caij max (%) | ||||
| C | Mn | P | S | Si | |
| A662 Qib C | 0.24 | 0.92-1.72 | 0.035 | 0.035 | 0.13-0.55 |
A662 Qib C Txhua Yam Khoom
| Teem nqi | A662 Qib C Txhua Yam Khoom | |||
| Qhov tuab | Pub | Lub tensile | Elongation | |
| A662 Qib C | lub hli | Min MPa | MPa | Min% |
| 200 | 295 | 485-620 | 18 | |
| 50 | 22 | |||
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Muaj Lus Ceeb
Siv (ultrasonic kuaj), ar (li kub kub xwb), tmcp (z35, z35, z35, z35, z35, z35, z35 xeem ntawv (xws li SGS sim), coated lossis txhaj tshuaj blasting thiab
Xim .
Q1:Dab tsi yog qhov tsawg kawg nkaus tsim qauv hlau (MDMT) cov ntawv pov thawj rau A662 Qib C, thiab nws sib piv li cas rau qib A / B?
Cov Kev Pab Pov Thawj:
ASME Tshooj Viii Div .1Pom zoo rau-120 degree(vs qib b's -101 degree)
Charpy V-Ceeb:Ntau dua los yog sib npaug rau 34j ntawm-110 degree(puag hlau) / ntau dua los yog sib npaug rau 40j ntawm -90℃(weld)
Iso 21009-3Kev ua raws cai rau LNG tag nrho cov tshuab muaj
Cov Ntawv Tshwj Xeeb:Yuav tsum tauKev coj ua nplua(Astm tsis muaj . 8} lossis finer)
Q2:Dab tsi yog cov piam thaj chaws Nickel cov ntsiab lus hauv qib C, thiab nws cuam tshuam li cas nws cuam tshuam cinogenic kev ua haujlwm?
Txhim Kho Alloy Chemistry:
Nickel:{{01.50-2.00% (vs 0.80-1.20}% hauv qib b)
Ultra-qis impurities:P tsawg dua lossis sib npaug rau 0.010%, s tsawg dua lossis sib npaug rau 0.008%
Micro-alioying:TI ({0.01-0.03%) + b (0.001-0.003%)
Metallurgical zoo:
DBTT (Ductile-Brittle Transition Temp) <-150°C
Los ntawm-thickness z-kev taw qhia ψ ntau dua lossis sib npaug rau 45%
Q3:Dab tsi yog qhov yuav tsum tau vuam cov txheej txheem rau -196℃ua kua nitrogen kev pab?
Lh2 / ln2 vuam raws tu qauv:
Preheat:{{0 {}}℃(thermocouple-saib)
Consumables:Aws A5.28 ER100S-NI3 (5.5% ni)
Interpass tswj:Tsawg dua los yog sib luag rau 100℃nrog tsawg dua los yog sib npaug rau 15kj / cm sov tawm tswv yim
Kev kho mob weld:
PuvThaum 600 ± 10℃rau 2hrs +Simulated tom qab kev kho cua sov (SPWHT)
Phased array ut + tafd for thickness >30mm
Cim npe nrov: ASTM A662 Qib C rau Siab Hlab Ntshav Phaj, Tuam Tshoj Astm A662 Qib C rau Siab Hlua Ntshav Phaj Cov Khoom Siv, Chaw muag khoom, Hoobkas
