Kev ua tau zoo sib piv ntawm TC4 thiab TA2 titanium rods
Nyob rau hauv high-kawg tsim teb xws li aerospace, thiab cov roj ua twj tseem ceeb, thiab lub zog ua haujlwm siab, thiab corrosion-resistant cov khoom. TC4 Titanium Rods (Ti-6V alloy) thiab TA2V alloy) yog ob lub zog muaj zog thiab zoo heev corrosion, feem xyuam. Kab lus no yuav piv ob lub pas nrig no raws li plaub qhov ntev: Cov khoom siv tshuaj, ua cov yam ntxwv, thiab cov ntawv qhia txog cov txheej txheem tom qab lawv qhov sib txawv.
Tshuaj lom neeg tshuaj lom neeg: qhov tseem ceeb sib txawv ntawm alloying thiab purity
TC4 Titanium Rods yog ib + dupleex titanium alloy. Nws cov khoom siv tseem ceeb yog 6% aluminium (al) thiab 4% vanadium (piv txwv li cov seem tsis huv (piv txwv li ntawm 0.3% thiab sib npaug lossis sib npaug 0.1%). Txhuas kev ua raws li lub stabilizer, txhim kho cov khoom siv siab-kub lub zog; Vanadium ua raws li lub stabilizer, txhim kho kev nruj thiab machinability. Qhov kev siv hluav taws xob alloying no pab TC4 kom sib xyaw ua ke lub zog siab nrog kev du me. TA2 titanium pas nrig yog kev lag luam ntshiab titanium ntau tshaj 99%, nitrogen (n tsawg dua lossis sib npaug (h tsawg dua lossis sib npaug rau 0.015%). Thaum nws lub zog yog txhim kho los ntawm cov khoom siv dag zog txhawb nqa vim yog impurities, nws purity imparts tshwj xeeb corrosion tsis kam thiab biocompatibility. Piv txwv li, tus nqi corrosion ntawm Ta2 hauv Seasater yog tsuas yog 0.001 mm / xyoo, tsawg dua li 0.005 mm / xyoo ntawm TC4.
Cov Cuab Yeej Siv Cov Neeg Kho Tshuab: Ib qho kev tsis sib haum xeeb ntawm lub zog thiab tawv
Zog Zog Piv
TC4 Titanium Rods muaj lub zog tensile ntawm 1000-1100 MPa thiab cov txiaj ntsig ntau dua li ntawm Ta2 (ntau dua li ob npaug rau ntawm Ta250-600 mpa, kom lub zog 350-500 mpa). Qhov sib txawv no los ntawm kev tsim qauv ntawm alloy: Txhuas cov ntaub ntawv nplua-aws cov khoom siv, thaum lub sijhawm Vanadium txhawb nqa, ob qho tib si txhim kho lub zog. Piv txwv li, cov dav hlau tshuab compressor ua los ntawm TC4 tuaj yeem tiv taus kub txog 12000 MPA, thaum TA2 tsuas yog haum rau cov khoom poob qis.
Elastic modulus thiab toughning
TC4 tus modulus elastic yog 105-120 GPA, siab dua TA2's 100 GPA, lub ntsiab lus tsawg dua hauv kev thauj khoom thiab muaj zog dua. Txawm li cas los xij, TA2's Beveure Tougness (Kic ≈ 50 mpa ≈0 (Δ5 ntau dua li ntawm 10%), thiab nws ntau dua li ntawm 10%), thiab nws ntau dua li ntawm 10%), thiab nws ntau dua li ntawm 10%), thiab nws ntau dua li cov khoom muaj kev sib tsoo, xws li cov kev cog lus cuav.
Cov yam ntxwv ua: Qhov sib txawv ntawm cov txheej txheem foob
Kub Ntxaij Ua Haujlwm Khoom
TC4 titanium bars must be die-forged at 900-950℃, with a final forging temperature of no less than 650℃to avoid coarsening of the -phase grains and a decrease in toughness. Nws cov khoom siv tsis zoo, thiab cov dej quenching yuav tsum rau cov ntu tuab dua 25 hli. Nyob rau hauv kev sib piv, TA2 cov pas nrig muaj qhov chaw dav dav (800-950 qib) thiab tuaj yeem ua tiav micrupured micrchtructure, ua rau lawv haum rau kev tsim cov khoom siv nyuaj.
Vuam thiab Nto Kho
TC4 tuaj yeem muab welded siv ntau txoj kev, suav nrog Argon arc vuam thiab hluav taws xob nqaj vuam. Lub zog Weld yog sib piv rau cov khoom siv hauv paus, tab sis kev nyuaj siab txhawb nqa ntawm 550-650℃yuav tsum tshem tawm cov kev ntxhov siab uas muaj kev ntxhov siab. TA2 muaj cov ntsiab lus zoo tshaj plaws, thiab nws cov ntsiab lus oxygen (tsawg dua lossis sib npaug nrog 0.2%) txo qhov kev pheej hmoo ntawm weld tawg. Nws tuaj yeem siv ncaj qha tom qab vuam yam tsis muaj kev kho tshwj xeeb. Hais txog kev kho deg, TC4 feem ntau yog tua cov pe (kev ntxhov siab saum npoo (thaum TA2
Kev ua yeeb yam sib txawv ntawm TC4 thiab TA2 titanium pas nrig yog qhov tseem ceeb ntawm kev sib npaug ntawm alloy tsim thiab tswj kev tswj hwm. Lub qub ua tiav lub zog siab thiab kub tiv taus los ntawm txhuas thiab vanadium alloying, ua rau nws haum rau kev ua haujlwm dhau; Cov tom kawg ntawm nws cov khoom ua purity kom ua tiav corrosion corrosion tsis kam thiab biocompatibility, pab rau pej xeem kev sib tw. Nrog rau cov cuab yeej ua tshiab ntawm cov thev naus laus zis tshiab xws li 3D luam thiab hmoov metallurgy, thaj chaw ua haujlwm ntawm ob leeg yog maj nthuav. Piv txwv li, xaiv Laser Melting (SMR) tuaj yeem tsim cov nyom TC4 tuaj yeem tsim cov kev ua kom muaj kev coj siab dawb huv si2 tubing.
