Ntshiabtitanium rodsthiab titanium alloy rods tau siv ntau thiab dav hauv kev lag luam, kev kho mob, thiab aerospace sectors. Hauv qab no, peb yuav tshuaj xyuas qhov sib txawv ntawm ob.
Ntshiab titanium: Ntshiab titanium yog 99% titanium thiab muaj corrosion thiab acid tsis kam. Kev lag luam - qib ntshiab titanium feem ntau siv hauv kev lag luam yog Gr2, uas yooj yim rau tshuab vim nws qhov nruab nrab corrosion tsis kam thiab tag nrho cov khoom siv kho tshuab.
Gr2 yog kev lag luam- qib titanium nrog ib theem. Nws yog kev lag luam -qib ntshiab titanium feem ntau siv hauv kev lag luam vim nws qhov nruab nrab corrosion tsis kam thiab tag nrho cov khoom siv kho tshuab. TA3 tuaj yeem siv tau thaum hnav hnyav dua thiab lub zog xav tau. Gr1 tuaj yeem siv tau thaum xav tau kev tsim kho kom zoo dua.
"Low thermal conductivity" txhais tau hais tias cov cua sov hloov mus qeeb. Kev hloov hluav taws xob qeeb qeeb ua rau muaj kev kub ntxhov hauv cheeb tsam thaum lub sijhawm machining, uas tuaj yeem yooj yim hlawv tawm cov cuab yeej txiav. Yog li ntawd, txhawm rau tiv thaiv kev tsim hluav taws xob ntau dhau, kev txiav ceev tau ceev heev thaum machining titanium alloys, ua rau lub sijhawm ua haujlwm ntev heev.
Kev lag luam- qib ntshiab titanium raug faib ua peb qib -Gr1, Gr2, thiab Gr3-raws li cov ntsiab lus tsis huv. Cov theem ntawm interstitial impurity ntsiab maj mam nce nyob rau hauv peb qib, uas ua rau ib tug sib txuas stepwise nce nyob rau hauv txhua yam muaj zog thiab hardness, tab sis ib tug sib thooj txo nyob rau hauv ductility thiab toughness.
Gr2 yog cov qib siv feem ntau ntawm kev lag luam ntshiab titanium hauv kev lag luam vim nws qhov nruab nrab corrosion tsis kam thiab tag nrho cov khoom siv kho tshuab. Gr3 yuav siv tau thaum hnav hnyav dua thiab lub zog xav tau. Gr1 yuav siv tau thaum xav tau kev tsim kho kom zoo dua.
Gr1, Gr2, thiab Gr3 nyob rau hauv Suav Teb Tus Txheej Txheem sib raug rau Gr1, Gr2, thiab Gr3 hauv UNS system.
Gr1 thiab Gr2, nrog cov ntsiab lus hlau ω ntawm 0.095%, cov ntsiab lus oxygen ω ntawm 0.08%, hydrogen cov ntsiab lus ω ntawm 0.0009%, thiab nitrogen cov ntsiab lus ω ntawm 0.0062%, pom zoo heev qis - kub toughness thiab siab qis -kub lub zog 5 3 structural .
Cov yam ntxwv ntawm Industrial-Qib Ntshiab Titanium:
Nws muaj lub zog me me tab sis zoo plasticity, ua rau nws yooj yim rau txheej txheem, daim ntawv, stamp, thiab vuam, nrog zoo machinability. Nws pom zoo corrosion kuj nyob rau hauv atmospheric huab cua, seawater, moist chlorine gas, thiab oxidizing, nruab nrab, thiab weakly txo cov xov xwm; Nws cov oxidation tsis kam yog superior rau ntawm feem ntau austenitic stainless hlau. Txawm li cas los xij, nws muaj kev tiv thaiv tsis zoo, yog li kev ua haujlwm kub yuav tsum tsis txhob siab dhau.
Daim ntawv thov ntawm Industrial-Qib Ntshiab Titanium:
Kev lag luam - qib ntshiab titanium feem ntau yog siv rau qhov chaw stamped thiab corrosion-cov khoom siv tiv thaiv kev ua haujlwm ntawm qhov kub qis dua 350℃uas raug rau kev ntxhov siab tsawg tab sis yuav tsum tau ua kom zoo. Piv txwv li: aircraft thav duab, tawv nqaij, thiab cov khoom siv cav; seawater-corrosion-cov kav dej, li qub, twj, hydrofoils, thiab cov khoom siv rau seawater desalination systems hauv kev lag luam marine; Hauv kev lag luam tshuaj, cov khoom siv hluav taws xob, cov twj tso kua mis lub cev, cov kab distillation, txias txias, agitators, tees, impellers, fasteners, ion twj, compressor li qub, nrog rau diesel cav pistons, txuas rods, thiab nplooj springs.
Titanium Alloys: titanium alloys muaj 90% titanium thiab feature siab zog thiab siab hardness. Lawv muaj ntau yam zoo, nrog rau kev ua haujlwm zoo corrosion, tsis tshua muaj ntom, siab tshwj xeeb lub zog, thiab zoo toughness thiab weldability.
GR5 titanium alloy yog dav siv hauv kev lag luam thiab kev tshawb fawb kev lag luam. Kev loj hlob sai ntawm titanium alloys tau lees paub los ntawm thoob ntiaj teb kev lag luam thiab kev lag luam aerospace. Tshwj xeeb, GR5 titanium alloy tuav thiab GR5 titanium forgings muaj kev cia siab rau kev lag luam. Ua los ntawm Ti-6Al-4V, GR5 alloy muaj cov yam ntxwv hauv qab no:
(1) Ti-6Al-4V yog + - hom alloy thiab yog siv dav.
(2) GR5 muaj kev ua tau zoo; nws cov pa kub deformation tshwm sim nyob rau hauv ob-theem cheeb tsam, thiab lub deformation yuav tsum tshaj 50% los hloov cov ntxhib qub Widmanstätten qauv mus rau hauv ib tug equiaxed qauv.
(3) Tom qab deformation, GR5 tuaj yeem ua rau muaj kev ntxhov siab- nyem annealing ( tuav ntawm 600℃, huab cua -cooled ), cov pa annealing ( tuav ntawm 700-800℃, cua -cooled ), recrystallization annealing ( tuav ntawm 9 } 800℃, ces cua-txias), thiab muab ob npaug rau annealing ( tuav ntawm 940℃, cua- txias, ua raws li tuav ntawm 700℃, cua-txias), ntawm lwm cov txheej txheem kho cua sov. Lub microstructure tau los ntawm kev ntxhov siab-relief annealing thiab pa annealing tsis yog{18}}recrystallized los yog ib nrab recrystallized, ua rau muaj zog dua; Recrystallization annealing yields ib qho equiaxed + intergranular p microstructure, uas nthuav tawm cov yas zoo; ob chav annealing tshwm sim nyob rau hauv ib qho equiaxed + microstructure, mus txog ib tug dual-theem qauv, thiab muaj tag nrho cov khoom zoo (t_u kwv yees li 900–1000 MPa, δ 10%, ψ kwv yees li 35%–45%).
(4) Thaum GR5 tau txais kev kho cua sov, nws lub zog tuaj yeem nce ntxiv los ntawm 20% -30%. Nws feem ntau lees txais tias kev laus ntawm 850-950℃yields microstructure nrog tus nqi tsim nyog ntawm thawj thiab zoo tag nrho cov khoom. GR5 alloy muaj qhov tsis zoo hardenability; Yog li ntawd, tus ntoo khaub lig- ntu ntu ntawm qhov chaw uas muaj kev txhawb zog rau kev kho cua sov feem ntau tsis ntau dua 40 mm.
(5) GR5 alloy muaj zoo weldability; Qhov kub ntawm qhov chaw vuam tsis muaj tsawg dua 90% ntawm cov matrix, thiab nws cov ductility zoo ib yam li cov hlau matrix.
(6) Kev tiv thaiv corrosion ntawm GR5 yog ze rau ntawm cov ntshiab titanium; Nws tuaj yeem ua haujlwm rau lub sijhawm ntev ntawm qhov kub qis dua 400 degree, thiab luv luv -lub sijhawm ua haujlwm kub tuaj yeem ncav cuag 700-750℃. Thaum cov pa oxygen thiab nitrogen cov ntsiab lus hauv cov hlau tsis tshua muaj, GR5ELI alloy tuaj yeem tuav cov yas zoo txawm tias nyob rau ntawm -196 degree, ua rau nws tsim nyog rau kev tsim cov khoom qis - kub, siab - cov hlab ntsha.
Titanium alloys yog siv nyob rau hauv qee lub chaw ua haujlwm loj, qhov twg cov kua nitrogen yog ua haujlwm rau kev ua haujlwm thiab cua txias los txhim kho kev ua haujlwm. Tsis tas li ntawd, yog tias qhov txias txias tsis txaus, cov feeb ntawm cov titanium alloy cov khib nyiab tsim tawm thaum lub tshuab ua haujlwm tuaj yeem kub hnyiab ntawm qhov kub ntawm 200 degree. Qhov no ua rau cov nqi ua haujlwm siab heev, thiab titanium alloys tau lees paub dav hauv kev lag luam machining yog ib qho ntawm cov khoom siv nyuaj tshaj plaws rau tshuab. Lawv cov nqi ua haujlwm tuaj yeem nyob ntawm ob peb mus rau kaum ob npaug ntawm tus nqi ntawm cov khoom nws tus kheej.
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