1. Tus Qauv Kub: Dab tsi ua rau Ti-6V (qib 5) feem ntau siv titanium alloy, tshwj xeeb tshaj yog nyob rau hauv daim foos?
Ti {- 6V lub dominance, tshwj xeeb hauv daim ntawv ntawm cov khoom uas tau raws li cov kev xav tau ntawm kev lag luam xaus. Nws yog feem ntau hu ua "cov ua haujlwm ua haujlwm" lossis "tus qauv kub" ntawm titanium alloys rau ntau qhov tseem ceeb:
Qhov muaj zog tshaj plaws-} rau {{1} {} {} {}} {mpa lossis txog 110 ksi). Qhov kev txuag hluav taws xob no yog thawj tsav tsheb hauv aerospace, qhov chaw txhua qhov kev txo qis roj ntxiv, cov payload, lossis siv tau ntau dua.
Cov khoom ntiag kho cov khoom ntiag tug ntxiv: nws tsis yog tsuas yog hais txog lub zog. Qib 5 muaj ib qho superb tshuav ntawm:
Siab qaug zog muaj zog: Qhov tseem ceeb rau cov khoom sib xyaw ua ke rov qab ua tiav cancix (piv txwv li, dav hlau wings, lub cav nplooj).
Zoo bacture nyuaj: nws tiv taus cov lus tshaj tawm tsis txaus siab, muab cov npoo ntawm kev nyab xeeb tiv thaiv kev puas tsuaj.
Kev Nkag Siab Nruab Nrab: Nws tuaj yeem tswj nws cov neeg kho tshuab kev ntseeg siab ntawm kev nce qib kub txog li 400℃(750℃f).
Zoo siab corrosion: nws tau txais kev tiv thaiv zoo rau cov atmospheric, cov tubrog nkoj, thiab ntau qhov chaw muaj kev lag luam los ntawm nws lub hauv paus titanium. Nws tsim ib qho tenacious, tus kheej-} kho oxide txheej (tio₂) uas tiv thaiv nws los ntawm kev corrosion.
Biocompatibility: nyob rau hauv nws ELI (ntxiv qhov kev xaiv qis dua) daim ntawv, ua rau nws txoj kev xaiv premier, ua rau kev hloov kho qhov kev hloov kho thiab cov txha hniav sib zog.
Daim foos ROD yog qhov tseem ceeb thaum nws ua haujlwm raws li cov khoom pib rau cov khoom tsis muaj suav. Cov pas nrig no yog forged, machined, thiab tig mus rau txhua yam los ntawm cov dav hlau tsaws iav thiab lub cav sib ceg kom phais cov khoom lag luam thiab siab}}} Kev ua lag luam ntsuas tsheb.
2. Lub alpha - Beta Micre Comptructure: Li cas? Ntu sib xyaw ntawm Ti-6V txhais tau tias nws cov khoom thiab cov txheej txheem?
Ti-6Al-4V is an alpha-beta ( - ) alloy, meaning its microstructure at room temperature is a mixture of two distinct crystal phases. Qhov ob-theem xwm no yog qhov tseem ceeb rau nws cov versatility.
Ob ntu:
Alpha () theem: ib qho hexagonal kaw {{0} packed (HCP) qauv, ruaj khov feem ntau los ntawm 6% cov ntsiab lus. Cov theem no muab:
Lub zog thiab creep tsis kam: nws yog qhov muaj zog dua, muaj cov theem ruaj khov dua ntawm qhov kub qis dua.
Beta () theem: lub cev - Chaw Sau Lus Sau (BCC) cov qauv, ruaj khov los ntawm 4% vanadium. Cov theem no muab:
Ductility thiab tawv: nws yog ntau ducas, txhim kho cov alloy txoj kev formability thiab fracture kuj.
HardenTability: Nws tso cai rau cov alloy kom muaj zog ntawm kev kho cua sov.
Yuav ua li cas micrtructure drives properties:
Qhov loj me, cov duab, thiab faib ntawm cov alpha thiab beta theem, tswj tau thaum lub sij hawm tsim khoom ntawm pas nrig, dictate cov khoom siv cov neeg kho kom kawg. Ib qho nplua, equiaxed (glajular) alcha qauv hauv qhov kev hloov pauv betformed hauv kev ua kom zoo tshaj plaws, ductility, thiab lub neej qaug zog.
Kev cuam tshuam ntawm cov txheej txheem:
Kev ua haujlwm kub: lub alloy yog qhov yooj yim forged thiab dov ntawm qhov kub tsis pub dhau lub alpha {}} qib beta teb (feem ntau ~ 95℃f thiab hauv qab). Qhov no tso cai rau kev tswj kom meej meej dua ntawm microstructure.
Kev kho cua sov: qhov no yog qhov twg nws alpha - beta xwm ci. Nws tuaj yeem yog cov tshuaj kho thiab laus (STA). Cov txheej txheem cuam tshuam nrog cua sov lub pas dej rau qhov kub thiab txias dua), thiab tom qab ntawd "qhov kub thiab txias rau precipition zoo alpha, ua rau muaj zog alpha, ua kom muaj zog zuj zus.
Weldability: cov cua txias nrawm tom qab vuam tuaj yeem ua rau muaj kev sib tw ua ke hauv tshav kub {}}} Weld kev kho cua sov.
3. Lub ncoo sib tw: vim li cas yog machining ti-6al-4V pas ua nyuaj, thiab cov kev coj ua zoo tshaj plaws?
Machining ti-6al-4V pas nrig tsis yog loorial nyuaj thiab yog ib qho tseem ceeb ntawm tus nqi siab ntawm cov khoom ua tiav. Cov teeb meem tshwm sim los ntawm alloy cov khoom muaj cov khoom:
TSEEM NYEEM:
Tsawg thermal conductivity: Titanium cov peev xwm tsis zoo los ua kom muaj cua sov (li 1 / 6th uas cov kev txiav tawm los ntawm cov chips lossis lub workpiece. Hloov chaw, nws xav txog ntawm cov cuab yeej txiav ntug, ua rau muaj kev kub heev (ntau dua 1000 degree) thiab cov cuab yeej ceev.
Lub zog siab ntawm kev nce qib siab: nws tswj hwm nws lub zog txawm tias nyob rau hauv qhov chaw kub uas tau ntsib hauv qhov chaw txiav, nce cov rog uas yuav tsum tau ua.
Tshuaj lom neeg xws li, titanium reacts system nrog cov cuab yeej siv (zoo li carbide), ua rau kev sib txawv hnav thiab galling.
Qes me elasters modulus: nws "Springiness" tuaj yeem ua rau lub zog ua haujlwm ntawm lub cuab tam, ua kom muaj kev sib tham thiab kev sib tw tsis muaj peev xwm tshwj tsis yog kev teeb tsa heev heev.
Kev coj ua tau zoo tshaj plaws rau kev ua tiav:
Cov kev xaiv cuab tam: Siv cov ntse, tsis ruaj lossis altnin / tialn -} coated carbide cov cuab yeej. Rau xov, polycrystalline pob zeb diamond (PCD) muaj cov cuab yeej tshwj xeeb.
Tuam geometry: lub suab puam zoo lub kaum ntse ntse yog qhov tseem ceeb rau kev txo cov rog thiab ntau tiam neeg.
Tej Ntsuas:
Kev txiav tawm qis: tswj hwm kub tiam.
High Pub Cov Nqi: Los pab lub cuab tam tau nyob hauv txoj haujlwm -} hast cov khoom siv tshiab.
Txaus ntshai ntawm kev txiav: Txhawm rau tiv thaiv kev txhuam thiab ua haujlwm tawv.
Siab -}} qhov siab txias: Qhov no tsis - sib yeem. Coolant nias ntawm 1000 psi (70 bar) lossis ntau dua yog siv los ua kom muaj qhov kub tawm thiab tshem tawm cov cua sov ntawm lub cuab tam.
Rigidity: Lub tshuab cuab tam, workpiece, thiab fixture yuav tsum tsis tshua muaj zog los tawm tsam titanium tus qauv qis thiab tiv thaiv kev sib tham.
4. Kev kho cua sov Versatility: Yuav ua li cas tuaj yeem kho cua sov hloov pauv cov khoom ntawm tus Ti-6V Qws?
Ib qho ntawm cov txiaj ntsig zoo tshaj plaws ntawm Ti-6V yog nws lub luag haujlwm rau kev kho cua sov, tso cai rau cov khoom siv cua sov, tso cai rau cov khoom siv ntawm tus pas nrig rau ib daim ntawv thov. Ob lub Koom Haum Me Nyuam Yaus yog:
1. Zeb annealed (ma):
Txheej Txheem: Tus pas nrig yog rhuab rau ib tug kub hauv qab ntawm qhov chaw beta (qhov kub uas lub alloy ua 100% beta) thiab tom qab ntawd {txias. Nov yog qhov muaj feem ntau thiab cov qauv.
Resulting cov khoom: Qhov no ua rau muaj kev sib xyaw ua ke zoo, ductility, thiab tawv. Nws yog ib qho chaw ruaj khov nrog kev ntxhov siab qis.
Raug cov khoom siv kho txhua yam:
Qhov kawg tensile lub zog: ~ 895 mpa (130 ksi)
Peple Zog: ~ 828 MPa (120 Ksi)
Elongation: ~ 10%
Cov ntawv thov: Siv rau feem ntau ntawm cov ntawv thov uas muaj zog thiab kev ua kom muaj kev puas tsuaj zoo.
2. Phom kho thiab laus (STA):
Txheej txheej:
Kev kho cov tshuaj: Tus pas nrig yog rhuab rau qhov kub nyob ze ntawm Beta Transus (feem ntau 955-970℃F), tuav, thiab tom qab ntawd nrawm quenched hauv dej lossis roj.
Kev laus: tus pas nrig quenched yog tom qab ntawd rov qab ua kom qis dua (480- 595℃f) rau ob peb teev thiab cua txias.
Resulting cov khoom: Cov txheej txheem no precipates zoo alpha hais nyob rau hauv lub zog, albeit nrog qee qhov txo qis hauv duas thiab pob txha lov.
Raug cov khoom siv kho txhua yam:
Qhov kawg tensile lub zog: ~ 1170 mpa (170 ksi)
Peple Zog: ~ 1100 MPA (160 Ksi)
Elongation: ~ 8%
Cov ntawv thov: tshwj tseg rau cov feem ntau cov kev ntxhov siab yog lub zog tseem ceeb yog lub zog tsim muaj zog, xws li kev phais neeg tseem ceeb thiab qee qhov kev phais mob phais.
5. Los ntawm Qws rau cov khoom siv: Cov ntawv thov tshwj xeeb twg uas tso siab rau Ti-6V Rods?
Ti {- 6 xeem-4V pas nrig yog cov khoom siv raw rau cov khoom tseem ceeb thoob plaws ntau hom kev lag luam High-tech. Daim ntawv Rod yog qhov tseem ceeb raws li nws feem ntau ua los ntawm kev zam, machining, lossis tig los tsim qhov kawg.
Aerospace (tus neeg siv coob tshaj plaws):
Cov Cheebtsam Airframe: tis qauv, fusel tshooj, tsaws iav kab teeb, thiab lub cav mounts. Cov pas nrig feem ntau yog muab tso rau hauv cov duab no.
Dav hlau tshuab: kiv cua disks, compressor hniav, spacers, thiab tsev nyob. Cov no yuav tsum muaj qhov siab- kub lub zog thiab nkees ua rau muaj qib 5.
Lub Chaw Haujlwm: Txhaum rau cov hlab ntsha siab, lub zog satellite, thiab pob zeb lub zog vim nws lub zog} qhov hnyav} Qhov hnyav} qhov hnyav.
Kev kho mob & phais mob:
Orthopedics: femoral stems rau hip hloov khoom siv rau hauv caug hloov, thiab cov phiaj xwm thiab cov screws. Lub ELI (Ntxiv cov qhab nia qis dua) qib yog siv nyob ntawm no rau txhim kho pob txha lov tohleure thiab biocompatibility.
Kev noj hniav: ua cov abutments thiab cog lub cev.
Kev Ntsuas Cov Cuab Yeej: Rau Tshwj Xeeb, Reusable cov cuab yeej uas teeb thiab corrosion tsis tau muaj txiaj ntsig zoo.
High - Performance Automotive & Sib Tw:
Cov Cheebtsam cov khoom sib txuas: cov pas nrig sib txuas, cov li qub, thiab valve springs, qhov twg txo cov reciprocating loj nce cav rpm thiab efficiency.
Chassis & Kev Ncua: Laij Teb, thiab Fasteners, thiab qhov chaw tsis muaj kev cuam tshuam zoo ntxiv txog kev tuav thiab traction.
Tubrog nkoj & Davehore:
Naval vessels: Shafer Shafts, submarine pob li qub, thiab lwm yam tseem ceeb ntawm cov nkoj thiab submersibles uas tsis hlav corrosion yog qhov tseem ceeb.
Cov neeg siv khoom lag luam:
Kev kub siab -} Cov Khoom Siv Kev Ua Si Ntaus: Cov thav duab tsheb kauj vab, cov chav ua si lub taub hau, thiab cov khoom muaj txiaj ntsig thiab cov roob nce toj uas muaj txiaj ntsig.
