1. Dab tsi yog cov tseem ceeb ntawm cov khoom thiab engineering qhov chaw ntawm 8642 steel?
Teb:
ATM A 519 8642 yog ib qho ultra - lub zog {} chromium almybdenum alloy hlau. Nws muaj pes tsawg leeg (carbon 0.40-0.45%, npib tsib -0.70%, thiab Molybdenum 0.25-0.35%) khav peb cov yam ntxwv.
Qhov kawg lub zog: Tom qab quenching thiab tempering, lub tensile lub zog ncav 1300-1500 MPa, ua rau ib qho ntawm cov qib siab tshaj plaws hauv A519 tus qauv.
Kev ua kom nruj heev: Los ntawm kev ua kom zoo tshaj plaws Molybdenum cov ntsiab lus, tus nqi Kic tuaj yeem ncav cuag ntau dua lossis sib npaug tsawg dua lossis sib npaug nrog 50 hli).
Kev Txom Nyem Tshwj Xeeb: Nws muab ob yam hydrogen embrittlement (hla NACE TM0284-2016 xeem) thiab fretting hnav tsis kam, ua rau kev siv nyob rau hauv ib puag ncig.
2. Tus txheej txheem cua sov li cas rau8642}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Tshaj tawm cov kev txwv ib txwm ua? A: Cov txheej txheem tshiab yuav tsum tau ua raws li cov khoom siv:
Ultra - Tus pos loj -} Tshooj Homogenization:
Siv cov tiaj sib nqus teb -} pab quenching (sib nqus tus nqi
Kho qauv:
Pom zoo laser poob siab peening (lsp, hwj chim ntom 8gw / cmo 8ng) los qhia cov kev ntseeg siab (tob).
Welding Kho:
Hluav Taws Xob Beam Txias, Lub Tshuab Nqus Nruab Nrab Ib puag ncig, tshav kub tawm tsawg dua los yog sib npaug kom tsis txhob siv lub zog ua ke nrog kev siv vuam.
3. Nyob rau hauv lub tswv yim uas muaj tswv yim yog 8642 irreplaceable?
A:
Kev Tiv Thaiv Lub Tebchaws thiab Kev Ruaj Ntseg:
Submarine Siab Hulls (Hy-80 steel xaiv, txo qhov hnyav hnyav), electromic armor colorplates;
Zog puag ncig:
Nuclear Fusion Ntaus Thawj cov qauv phab ntsa ua ntej phab ntsa (resistant rau 14mev Neutradiation
Chaw tshawb nrhiav:
Lunar Base txhawb nqa lub moj khaum-ntawv rau -180℃rau 150 {} Qhov tseem ceeb xaiv rau {}} / 4340?
Teb:
vs . 8640:
Los ntawm kev nce cov ntsiab lus Molybdenum (0.25 - 0.}}}}}} Cov nqi siab) los ntawm 20%, tab sis tus nqi nce li kwv yees li 18%.
vs . 4340:
4340 Ua raws li kev nruj me ntsis ntawm ultra- Tsawg kub (-196 degree), thaum {} '}= -1) yog 30% siab dua.
5. Tag nrho {- txheej txheem zoo tswj thiab txiav - ntug ua tshuab? Teb:
Metallurgical Control:
Ntshav arc thim rov qab (par)
Daim duab qhia txog 3D Inlision Sprision Sprision Sport Access (x - tshav ntawm cov ntaub ntawv tom nyiag) yuav tsum muaj.
Ntse lag luam:
AI Kev yoog tau pom zoo Milling (tiag {- lub sij hawm pub haum lub neej los ntawm 3 zaug).
Adillitive manufacturing yuav tsum tau kub iSostatic nias (1200℃/ 100 mpa × 4 teev).
Hauv - Txoj Haujlwm Saib Xyuas:
Kev ntxuav cov fiber ntau fiber ntau (saib xyuas ntau yam: lim, ntsuas kub, thiab hydrogen siab).
Nonlinear acoustic emission kuaj tau ua txhua txhua 1000 teev (mus ntes cov ntawv loj me).
