Lub luag hauj lwm ntawm titanium alloy, khoom, yam ntxwv?

Titanium alloy yog dav siv nyob rau hauv ntau yam teb vim nws lub zog siab, zoo corrosion kuj thiab kub kub kuj. Ntau lub teb chaws hauv ntiaj teb tau paub txog qhov tseem ceeb ntawm titanium alloy cov ntaub ntawv, thiab tau ua tiav ntawm kev tshawb fawb thiab kev tsim kho, thiab tau txais kev siv tswv yim. Nyob rau xyoo 1950 thiab 1960, nws tsuas yog tsim kub kub titanium alloy rau aeroengine thiab titanium alloy structural rau lub cev. Nyob rau xyoo 1970, ib pawg ntawm corrosion resistant titanium alloy tau tsim. Txij li thaum xyoo 1980s, corrosion resistant titanium alloy thiab siab zog titanium alloy tau tsim ntxiv. Titanium alloy feem ntau yog siv los ua lub dav hlau lub cav compressor qhov chaw, ua raws li cov foob pob hluav taws, missiles thiab high-speed aircraft structural qhov chaw.

Siab zog

Qhov ceev ntawm titanium alloy feem ntau yog li 4.5g / cm3, tsuas yog 60 feem pua ​​​​ntawm cov hlau, lub zog ntawm cov titanium ntshiab yog ze rau lub zog ntawm cov hlau zoo tib yam, qee qhov siab zog titanium alloy tshaj lub zog ntawm ntau cov hlau alloy steel. Yog li ntawd, lub zog tshwj xeeb (lub zog / ntom) ntawm titanium alloy yog siab dua li ntawm lwm cov khoom siv hlau, raws li qhia hauv Table 7-1. Nws tuaj yeem tsim cov khoom siv nrog lub zog siab, zoo rigidity thiab lub teeb yuag. Tam sim no, titanium alloy yog siv rau cov khoom siv cav, pob txha, tawv nqaij, fasteners thiab tsaws iav.

Siab thermal zog

Kev siv qhov kub thiab txias yog ob peb puas degrees siab dua aluminium alloy, ntawm qhov kub nruab nrab tseem tuaj yeem tswj tau lub zog uas yuav tsum tau ua, tuaj yeem ua haujlwm hauv 450 ~ 500 degree kub rau lub sijhawm ntev ob hom titanium alloy nyob rau hauv thaj tsam ntawm 150 degree ~ 500 degree. tseem muaj lub zog tshwj xeeb, thiab aluminium alloy ntawm 150 degree dua li lub zog poob qis. Kev ua haujlwm kub ntawm titanium alloy tuaj yeem ncav cuag 500 degree, thiab cov aluminium alloy yog qis dua 200 degree.

Zoo tiv thaiv corrosion

Lub corrosion kuj ntawm titanium alloy yog zoo dua li ntawm stainless hlau thaum ua hauj lwm nyob rau hauv cov huab cua thiab seawater nruab nrab. Kev tiv thaiv pitting corrosion, acid corrosion, kev nyuaj siab corrosion yog tshwj xeeb tshaj yog muaj zog; Zoo heev corrosion kuj rau alkali, chloride, chlorine organic khoom, nitric acid, sulfuric acid thiab hais txog. Tab sis titanium muaj qhov tsis zoo corrosion los txo cov pa oxygen thiab chromite nruab nrab.

Kev ua haujlwm kub tsis zoo

Titanium alloy tuaj yeem khaws nws cov khoom siv hluav taws xob ntawm qhov kub thiab txias qis. Titanium alloys nrog kev ua haujlwm kub tsis zoo thiab kev tshem tawm tsawg heev, xws li TA7, tuaj yeem tswj tau qee yam yas ntawm -253 degree . Yog li ntawd, titanium alloy kuj yog ib qho tseem ceeb uas tsis muaj qhov kub thiab txias cov khoom siv.

Tshuaj active

Titanium muaj cov tshuaj ua haujlwm siab, thiab muaj cov tshuaj tiv thaiv muaj zog nrog O, N, H, CO, CO2, dej vapor thiab ammonia hauv huab cua. Thaum cov ntsiab lus carbon ntau dua 0.2 feem pua, TiC nyuaj yuav raug tsim nyob rau hauv titanium alloy. Thaum qhov kub siab dua, qhov kev txiav txim nrog N tseem yuav tsim TiN titanium alloy khoom

Hard txheej txheej; Tshaj 600 degree, titanium absorbs oxygen los ua ib txheej tawv tawv nrog siab hardness. Thaum cov ntsiab lus hydrogen nce, embrittlement txheej kuj yuav tsim. Qhov tob ntawm cov tawv tawv tawv uas tsim los ntawm kev nqus roj tuaj yeem ncav cuag 0.1 ~ 0.15mm, thiab hardening degree yog 20% ​​~ 30 feem pua. Titanium tshuaj affinity kuj loj, yooj yim rau kev sib txhuam nto adhesion tshwm sim.

Me me thermal conductivity, me me elastic modulus

Lub thermal conductivity ntawm titanium λ=15.24W / (mK) yog hais txog 1/4 ntawm nickel, 1/5 ntawm hlau, 1/14 ntawm txhuas, thiab thermal conductivity ntawm ntau yam titanium alloys yog li 50 feem pua tshaj li ntawm titanium. Lub elastic modulus ntawm titanium alloy yog hais txog 1/2 ntawm cov hlau, yog li nws rigidity yog tsis zoo, yooj yim deformation, yuav tsum tsis txhob ua slender pas nrig thiab nyias phab ntsa, txiav cov txheej txheem ntawm lub springback yog heev loj, txog 2 ~ 3 zaug ntawm stainless hlau, ua rau muaj kev sib txhuam hnyav, adhesion, adhesion hnav ntawm cov cuab yeej nto

Yog tias koj muaj lus nug, thov hu rau peb. Peb lub tuam txhab tuaj yeem tsim ntau yam koob txhaj tshuaj, koob tshuaj kho mob, koob txhaj tshuaj, koob tshuaj hypodermic, koob txhaj tshuaj, koob tshuaj tiv thaiv kab mob, koob txhaj tshuaj, koob txhaj tshuaj, koob txhaj tshuaj, koob xaum koob, koob ovum khaws koob, koob txhaj tshuaj, thiab lwm yam Yog tias koj xav tau kev kho koob cov khoom, thov hu rau peb. Peb tos ntsoov rau koj qhov kev nug! Qhov zoo ntawm cov khoom tsim nyob rau hauv peb lub Hoobkas yuav txaus siab rau koj!

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