BT20 Titanium bar

Nominal muaj pes tsawg leeg ntawmBT20 Titanium baryog Ti-6.5Al-2Zr-1Mo1V, uas muaj cov cuab yeej zoo txhua yam. Lub ntsiab ntxiv zog mechanism yog los ntawm kev daws teeb meem ntxiv dag zog ntawm lub a-stabilizing keeb Al. Ntxiv cov ntsiab lus nruab nrab Zr thiab B kom ruaj khov cov ntsiab lus Mo thiab V tuaj yeem txhim kho kev tsim khoom thiab tau siv ntau dua hauv kev lag luam dav hlau.

Nws yog siv los ua cov khoom thauj -cov tswv cuab ntawm chav tsev kub (-60 txog 400 degree) ntawm cov titanium alloys. Nws yog tsim los ua kom tau raws li qhov xav tau ntawm lub dav hlau lub cev cov qauv qhov chaw... Cov yam ntxwv ntawm ze - hom titanium alloys yog: nws muaj lub zog siab, siab tawv thiab siab hardenability ntawm metastable - hom titanium alloys, thiab tseem muaj + Tensile Ductility thiab Elastic Modulus ntawm -Type Titanium Alloys.

BT20 titanium alloy feem ntau yog siv nyob rau hauv aerospace, feem ntau yog siv los ua aircraft cav compressor Cheebtsam, ua raws li cov qauv ntawm cov foob pob ua ntxaij, missiles thiab siab - dav hlau ceev.

Cov lus qhia ntau lawm

BT20|TA15|Ti-6.5Al-2Zr-1Mo1V titanium bar yog smelted los ntawm nqus consumable arc peb zaug kom tau tiav ingots nrog ib txoj kab uas hla ntawm Φ750mm.

Txheej txheem:

-Rau billet forging, ua ntej, qhov kub siab ntawm -theem cheeb tsam yog nqa tawm rau 1 lub sij hawm ntawm kev kos duab, thiab tom qab ntawd 2 zaug ntawm kev ntxhov siab thiab kos duab yog ua nyob rau tib qhov kub;

- nws yog kos rau 3 zaug ntawm qhov kub thiab txias hauv ob - theem cheeb tsam, thiab thaum kawg nws yog sib npaug rau hauv ib qho bar.

- Tom qab forging, cov tuav yog huab cua-cooled thiab annealed ntawm 800℃rau 1 h, thiab ces transversely sampled thiab ua tiav rau hauv lub teb chaws qauv qauv rau microstructure thiab kev ua tau zoo kuaj.

Tshuaj muaj pes tsawg leeg (max) VT20/BT15

Nco tseg: Ti yog lub hauv paus; feem pua ​​ntawm Ti yog muab kwv yees li.

Advantageous nta

Siab siv

Qhov ceev ntawm titanium alloy feem ntau yog hais txog 4.5g / cm3, uas tsuas yog 60% ntawm cov hlau. Lub zog ntawm ntshiab titanium yog ze rau cov hlau zoo tib yam. Qee qhov siab - lub zog titanium alloys tshaj lub zog ntawm ntau cov qauv hlau alloy. Yog li ntawd, lub zog tshwj xeeb (lub zog / ntom) ntawm titanium alloy yog ntau dua li ntawm lwm cov khoom siv hlau, thiab cov khoom thiab cov khoom siv nrog lub zog siab, zoo rigidity thiab lub teeb yuag tuaj yeem tsim tau. Tam sim no, titanium alloys yog siv nyob rau hauv aircraft engine Cheebtsam, skeletons, tawv, fasteners thiab tsaws iav.

Siab thermal zog

Kev khiav hauj lwm kub yog ob peb puas degrees siab dua li ntawm aluminium alloys, thiab qhov yuav tsum tau muaj zog tseem tuaj yeem tswj tau ntawm qhov kub thiab txias, thiab nws tuaj yeem ua haujlwm ntev ntawm qhov kub ntawm 450 txog 500 degree. Lub zog tshwj xeeb ntawm aluminium alloy txo qis ntawm 150 degree. Kev ua haujlwm kub ntawm titanium alloy tuaj yeem ncav cuag 500 degree, thiab kev ua haujlwm kub ntawm aluminium alloy yog qis dua 200 degree.

Zoo corrosion kuj

Titanium alloy ua haujlwm nyob rau hauv huab cua ntub thiab dej hiav txwv nruab nrab, thiab nws cov corrosion kuj zoo dua li cov hlau tsis muaj steel; nws yog tshwj xeeb yog resistant rau pitting corrosion, acid corrosion, thiab kev nyuaj siab corrosion; Nws yog resistant rau alkali, chloride, chlorine, organic tshuaj, nitric acid, sulfuric acid thiab lwm yam muaj zoo heev corrosion kuj. Txawm li cas los xij, titanium muaj kev tiv thaiv tsis zoo rau kev tshaj tawm nrog txo cov pa oxygen thiab chromium ntsev.

Kev ua tau zoo ntawm qhov kub thiab txias

Titanium alloys tseem tuaj yeem tswj hwm lawv cov khoom siv kho tshuab ntawm qhov qis thiab ultra- qhov kub thiab txias. Titanium alloys nrog kev ua haujlwm kub tsis zoo thiab tsis tshua muaj kev cuam tshuam cov ntsiab lus, xws li ta7, tuaj yeem tswj tau qee yam yas ntawm -253℃. Yog li ntawd, titanium alloy kuj yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob qis.

Tshuaj active

Titanium muaj cov tshuaj lom neeg zoo thiab ua rau muaj zog tshuaj lom neeg nrog o, n, h, co, co2, dej vapor, ammonia, thiab lwm yam hauv huab cua. Thaum cov ntsiab lus carbon ntau dua 0.2%, ib qho nyuaj tic yuav raug tsim nyob rau hauv titanium alloy; thaum kub siab, nws tseem yuav tsim cov khoom titanium alloy. Hard txheej txheej; Thaum qhov kub siab tshaj 600 degree, titanium absorbs oxygen los ua ib qho nyuaj hardened txheej; qhov nce ntawm hydrogen cov ntsiab lus tseem yuav tsim ib txheej embrittlement. Qhov tob ntawm cov tawv thiab nkig txheej txheej tsim los ntawm absorbing gas tuaj yeem ncav cuag 0.1 txog 0.15 hli, thiab hardening℃yog 20% ​​mus rau 30%. Cov tshuaj affinity ntawm titanium kuj loj, thiab nws yog ib qho yooj yim mus ua raws li kev sib txhuam nto.

Me me thermal conductivity thiab elastic modulus

Lub thermal conductivity ntawm titanium λ=15.24w / (mk) yog li 1/4 ntawm nickel, 1/5 ntawm hlau, 1/14 ntawm txhuas, thiab thermal conductivity ntawm ntau yam titanium alloys yog li 50% qis dua li ntawm titanium. Lub elastic modulus ntawm titanium alloy yog hais txog 1/2 ntawm cov hlau, yog li nws rigidity tsis zoo thiab nws yooj yim rau deform. Nws tsis tsim nyog los ua cov pas nrig thiab nyias- cov phab ntsa. lub sij hawm, ua rau muaj kev sib txhuam hnyav, adhesion thiab daim ntawv cog lus hnav ntawm lub ntsej muag ntawm lub cuab yeej.

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