Kev siv cov titanium alloy raj hauv tsheb mufflers
Titanium alloy muaj cov khoom zoo xws li lub zog siab, zoo corrosion kuj, zoo heev processability, thiab kub kub kuj. Vim nws qhov kev paub tshwj xeeb ntawm cov khoom kim heev thiab kev muaj tswv yim, titanium alloy feem ntau siv hauv tsheb mufflers. Yog li dab tsi yog qhov zoo ntawm titanium alloy siv hauv mufflers? Cia peb saib.
•Titanium daim ntaub ntawv hauv kev lag luam tsheb
Hauv kev lag luam automotive, qhov tseem ceeb thiab kev muaj tswv yim ntawm mufflers tsis tuaj yeem overstated vim hais tias lawv tau muab zais ntawm qhov pom thiab qhov cua kub yog siab tshaj ntawm cov maus taus. Vim muaj qhov kub thiab txias oxidation tsis kam thiab kub tsis kam, kev siv titanium alloys hauv cov mufflers tshwj xeeb yog txwv. Hauv kev teb rau cov xwm txheej zoo li no, txhawm rau kom tsis txhob muaj qhov cuam tshuam loj hauv kev tsim cov titanium alloys, qee lub tuam txhab tau tsim Ti-1.5Al los txhim kho qhov kub thiab txias oxidation tsis kam thiab lub zog kub. Titanium tau tsim los ntawm kev hloov pauv ntawm lub cav thiab cov khoom siv hluav taws xob, thiab lwm yam, thiab nws ua rau kom cov pa roj cua kub ntawm qhov siab dhau los mus rau 700 ~ 750 degrees, yog li nws yog siv rau hauv tsheb mufflers. Xyoo 2009, nws tau sau npe ASTM cov qauv thiab tau txais patents los ntawm Tebchaws Meskas, Tebchaws Askiv, Lub Tebchaws Yelemees, Ltalis, thiab Fabkis.
•Titanium alloy Ti-0.5A1-0.45Si-0.2Nb
Titanium alloy Ti-0.5A1-0.45Si-0.2Nb suav tias yog qhov zoo dua. Piv nrog rau cov ntaub ntawv muffler uas twb muaj lawm thiab JIS Class 2 ntshiab titanium thiab Ti-1.5Al, cov titanium alloy no tau zoo dua kub-kub oxidation kuj. Cov ntaub ntawv uas twb muaj lawm no siv tsis tau vim muaj teeb meem xws li embrittlement. Xav txog kev siv nyob rau hauv qhov chaw kub kub. Tib lub sijhawm, qhov kub tsis kam yog ze rau Ti-1.5Al. Piv nrog JIS Chav Kawm 2 ntshiab titanium, ntawm 400 degrees, lub zog yog 3-4 npaug ntawm cov titanium ntshiab, thiab lub zog tensile yog 2-3 npaug ntawm cov ntshiab titanium. Yog li ntawd, cov titanium alloy no muaj qhov tsim nyog kub ua haujlwm zoo li Ti-1.5Al. Tsis tas li ntawd, raws li JIS 2 tus qauv, cov hlau yuav tsum muaj tib theem ntawm plasticity li ntshiab titanium.
•Qhov zoo tshaj plaws titanium alloy khoom
Rau cov tsheb, qhov kub ntawm qhov chaw tom qab lub hauv paus yeeb nkab yog qis dua, tab sis nyob ntawm seb hom tsheb, txawm tias qhov kub ntawm qhov no tuaj yeem ncav cuag 700 ~ 800 degrees. Thaum cov hlau titanium raug rau qhov kub thiab txias rau lub sijhawm ntev, qhov ntug ntawm qhov saum npoo yuav nkig vim yog tsim cov txheej tawv tawv vim qhov sib txawv thiab nkag mus ntawm oxygen. Nyob rau tib lub sijhawm, tev tawm ntawm lub xeev oxidation tshwm sim thiab cov titanium hlau ib nrab reacts, txo nws lub zog. Tsis tas li ntawd, vim qhov nce ntawm cov qoob loo loj, qaug zog thiab embrittlement kuj txo. Nyob rau hauv qhov kub thiab txias ib puag ncig, muaj qee qhov chaw uas Ti-1.5Al muaj peev xwm tsis muaj zog antioxidant. Yog li ntawd, yog tias cov khoom siv titanium tuaj yeem tsim tau uas tuaj yeem tswj tsis tau qhov kub-kub oxidation tsis kam ntawm Ti-1.5Al thiab saum toj no, tab sis kuj tseem tuav lub zog ntawm Ti-1.5Al thaum molding thiab ua cov muffler system sib dhos, nws yuav siv rau Muffler system sib dhos molding thiab ua, uas yuav yog cov khoom siv suab nrov zoo tshaj.
