Qhov sib txawv ntawm cam titanium alloys thiab titanium alloys

Titanium alloys, vim lawv lub zog siab, xeb kuj, tau dhau los ua cov ntaub ntawv tseem ceeb, tau dhau los ua cov tub ntxhais kawm, kho mob, tshuaj lom neeg, thiab lwm daim teb. Txawm li cas los xij, tsis pub dhau ntawm kev faib tawm ntawm titanium alloys, "nrum titanium alloys" thiab "rub tawm titanium alloys" feem ntau tsis meej pem. Txawm hais tias ob qho tib si yog cov ntaub ntawv titanium-raws li lawv txawv nyob rau hauv lawv cov txheej txheem kev npaj, microstructures, kev ua yam ntxwv.

Kev Txhais Lus thiab Kev Sib Koom: Pib Taw Qhia Ntawm Cov Ntawv Daim Ntawv

Titanium alloys tau tsim los ntawm kev ntxiv cov khoom siv xws li txhuas, vanadium, thiab molybdenum rau ib titanium matrix. Lawv cov kev cais tawm feem ntau yog raws li kev kho kom sov thiab kev kho kom sov:

-Tus alloys (piv txwv li, ti,

-Tus Alloys (piv txwv li, ti, 10V-2FE-3Afe-3al): Muaj zog rau lub siab-zog Txheej Txheem;

{+ -} Hom, Ti-6al-4V): Kev ua kom zoo tshaj plaws, suav rau ntau tshaj 50% ntawm titanium alloy siv.

Nrum titanium alloys yog ib daim ntawv tshwj xeeb ntawm titanium alloy, hais txog cov khoom siv titanium alloy ncaj qha los ntawm cov txheej txheem xws li peev Casting thiab Graphite casting. Nws cov tub ntxhais feature yog "kev sib sau ua ke," ua kom muaj kev tsim cov khoom ntawm cov nyom nrog tsawg heev lossis tsis machining. Piv txwv li, Cheebtsam xws li cov dav hlau cav dav hlau txawb pob zeb thiab submarine cov kws lij choj cia siab rau kev ua cov khoom siv kom haum.

 

Txheej Txheem Flow: Txawv hauv txoj kev los ntawm melting rau kev sib sau

Qhov kev npaj ntawm wrought titanium alloys feem ntau ntawm cov txheej txheem thermomechanical xws li Forging, Dov, thiab Extrusion. Tus txheej txheem suav nrog:

Cov khoom siv raw melting: Titanium Ingots yog melted nyob rau hauv lub tshuab nqus tsev muaj cov tshuab hluav taws xob arc (var);

Qhib Forging: Ntau hom kev pom zoo Forging hauv theem lossis + theem cheeb tsam yog ua rau tawg ua coarse nplej;

Kev Kho Cua Sov: Kev kho mob kev kho ua ke nrog kev ua haujlwm laus yog siv los tswj cov microstructure thiab cov zog.

Kev npaj ua pov thawj titanium alloys yog nyob ntawm ib puag ncig kev nqis peev casting, nrog cov txheej txheem hauv qab no:

Qauv Ua: Ib daim ntawv ciab lossis 3D-luam tawm cov pwm pwm yog tsim raws li cov duab;

Cov khoom lag luam pwm: cov khoom siv refractory yog coated nyob rau saum npoo ntawm tus qauv los ua ib tug ceramic pwm plhaub;

Melting thiab nchuav: Titanium alloy tau melted thiab hliv rau hauv cov pwm plhaub hauv qab nqus plua plav lossis cov roj kev tiv thaiv;

Tom qab ua: Lub pwm muag tau raug tshem tawm, lub rooj vag yog txiav, thiab kub iSostatic nias (hip) yog ua rau tshem tawm porosity.

Qhov sib txawv:Wrought titanium alloys ua kom lawv cov nplej ua kom huv los ntawm kev deformation yas, thaum cam cating titanium alloys cia siab rau Melting thiab solidification los tswj lawv microstructure. Piv txwv li, ZTC4 alloy (Ti-6al-4V rau Casting) yuav ua rau muaj kev siv micrroporosity hauv nws cov duab kos, whereas-4v ua kom pom cov txheej txheem zoo nkauj, muaj cov khoom lag luam zoo nkauj.

 

Microstructure: lub hauv paus ntawm kev ua haujlwm sib txawv

Cov yam ntxwv Microstructure ntawm wreught titanium alloys:

Equiaeved nplej: tau los ntawm kev zais zais cia, ua rau muaj cov qoob loo zoo loj (<10μm) and uniform mechanical properties;

Fullex qauv: thiab theem theem tau faib rau hauv Lamellar cov qauv, ntsuas lub zog thiab tawv;

Pob tawb Lamellae yog tsim tom qab kev zam kub siab, ua rau zoo nkauj creep resistance.

Cov yam ntxwv ntawm cam titanium alloys:

CoeceGar nplej: Muaj cov muaju nyiam loj hlob raws cov kev taw qhia ntawm kub ntws thaum lub suab nrov, nquag mus rau anisotropy;

Micropority: tsis txaus ntsws noj ua rau muaj ntau lub porosity, xav tau kub iostatic nias (hip);

-Praques: Nrov -Phite -phase txhawb nqa, muaj feem txo tau kev qaug zog qaug zog.

Cov Ntaub Ntawv Sib Piv:Lub zog tensile ntawm ZTC4 alloy kis ntawm 500 qib yog 800-900 MPa, thaum forged Ti-6al nce 95000 MPa ntawm qhov kub tib yam. Txawm li cas los xij, cov txheej txheem casting tuaj yeem tsim cov qauv yooj yim, cov txheej ntsa nyias nyias nrog lub phab ntsa tuab ntawm tsuas yog 2mm, uas nyuaj rau kev ua tiav nrog kev ua kom tiav nrog cov txheej txheem forging.

 

Cov Lus Pom Zoo Zoo: Cov kev xaiv sib txawv hauv kev thov cov xwm txheej

Qhov zoo ntawm deformed titanium alloys:

Lub zog siab thiab kev nruj: kev kho cua sov tso cai rau kev tswj kom meej ntawm kev tswj hwm lub zog thiab ductility;

Microstructure homogeneity: haum rau cov khoom siv yuav ua rau muaj kev thauj khoom, xws li cov dav hlau tsaws iav;

Cov Khoom Zoo: Tsawg nplaim roughness tom qab ua thiab txhim kho corrosion tsis kam.

Qhov zoo ntawm cam khwb cia titanium alloys:

Cov qauv nyuaj ua kom muaj peev xwm: muaj peev xwm tsim cov Cheebtsam nrog cov qauv hauv cov kab ke qub thiab cov ntoo yees duab cov teeb meem;

Cov cuab yeej siv siab siv: nyob ze-net-puab cov txheej txheem txo kev txiav cov haujlwm thiab cov nqi tsim khoom;

Kev tsim tawm tau zoo: Sijhawm luv luv lub sijhawm ib daig, haum rau me-batch, muaj txiaj ntsig zoo-ntxiv-ntxiv cov khoom lag luam.

Cov Kev Siv Raug:

Aerospace: wrought titanium alloys tau siv nyob rau hauv C919 tsaws iav, thiab cam khwb cia titanium alloys tau siv nyob rau hauv cov cav cav compressor cas;

Kev kho mob: Tsim kom muaj cov khoom siv sib koom ua ke ntawm cov khoom siv cuav, thiab ua pov thawj titanium alloys tau siv rau hauv cov phiaj txheem pob txha customized;

Tshuaj lom neeg: cov tshuaj lom neeg cov titanium yog siv rau hauv kev ua pa cua sov cov pob tw tawm, thiab ua pov cov roj av roj av siv hluav taws xob.

 

Kev sib tw ua haujlwm thiab kev txhim kho

Cov kev sib tw ntawm cam titanium alloys:

Porosity thiab cais iTostatic nias thiab kev hloov kho yuav tsum tau txhim kho microstructure;

Maum cov nqi: Cov Cerbrium Kev Npaj Ua Haujlwm yog ntev, thiab tus nqi ntawm txhua tus pwm muaj siab;

Qhov tseeb ntawm qhov tseeb: Solmification Shrinkage ua rau muaj kev sib txawv, uas yuav tsum tau ua kom zoo los ntawm kev tsim khoom siv tshuab ntxiv.

Tiam sis kev loj hlob:

Adillitive kev sib sau ua ke: Siv hluav taws xob Beamting (EBM) lossis xaiv Laser Melting (SLM) thev naus laus zis kom ua tiav cov khoom lag luam pov tseg ntawm cam cov alloys;

Cov Txheej Txheem Qis Qoob Luv: Tsim cov Crucible Crucible Induction Induction Melting (ISM) thev naus laus zis los txo tus nqi ntawm titanium alloy casts casings;

Kev tsim cov alloys tshiab: xws li Ti-al-v-ZR tagnrho tsev neeg, uas ua rau muaj zog kub thiab corrosion tsis kam ntawm cov roj titanium.

 

Qhov sib txawv ntawm cam khwb cia thiab wrought titanium alloys yog qhov tseem ceeb sib ntaus sib tua ntawm "tsim-tsav tsim" thiab "kev ua haujlwm-tsav tsheb tsim khoom." Cov qub tsom rau cov txheej txheem nyuaj moulding, thaum tom kawg lub hom phiaj rau kev ua tau zoo heev. Hauv kev lag luam Aerospace, ob feem ntau siv nyob rau hauv Tandem: Nrum titchaium alloys tau siv los tsim cov hniav, ua ke tsim muaj zog ntau siv zog.