Nyob zoo, lub hom phiaj yog raws li nram no
Filament kev lag luam
Tungsten yog thawj zaug siv los ua incandescent filaments.Tungsten rhenium alloys tau kawm ntau heev.Lub tshuab melting thiab tsim tshuab ntawm tungsten kuj tau kawm.Tungsten ingots yog tau los ntawm consumable arc thiab electron beam melting, thiab ib co khoom yog tsim los ntawm extrusion thiab yas ua;Txawm li cas los xij, lub melting ingot muaj coarse nplej, tsis zoo plasticity, nyuaj ua thiab tsis tshua muaj yield, yog li cov txheej txheem melting yas tsis tau dhau los ua cov txheej txheem tseem ceeb.Ntxiv rau cov tshuaj vapor deposition (CVD) thiab plasma spraying, uas tuaj yeem tsim cov khoom tsawg heev, hmoov metallurgy tseem yog lub ntsiab lus tseem ceeb los tsim cov khoom tungsten.
Folding ntawv kev lag luam
Hauv xyoo 1960, kev tshawb fawb tau ua tiav ntawm tungsten smelting, hmoov metallurgy thiab kev siv tshuab.Tam sim no nws tuaj yeem tsim daim hlau, ntawv, ntawv ci, tuav, kav, xaim thiab lwm yam profiled.
Folding cov ntaub ntawv kub kub
Kev siv kub ntawm cov khoom siv tungsten yog siab, thiab nws tsis zoo los txhim kho qhov kub thiab txias zog ntawm tungsten tsuas yog siv cov tshuaj ntxiv dag zog.Txawm li cas los xij, kev sib cais (los yog nag lossis daus) ntxiv dag zog rau lub hauv paus ntawm cov tshuaj tiv thaiv kom muaj zog tuaj yeem txhim kho qhov kub thiab txias zog, thiab kev txhawb zog ntawm ThO2 thiab precipitated HfC dispersion hais yog qhov zoo tshaj plaws.W-Hf-C thiab W-ThO2 alloys muaj qhov kub thiab txias zog thiab creep zog ntawm txog 1900 ℃.Nws yog ib txoj hauv kev zoo los ntxiv dag zog rau cov tungsten alloy siv hauv qab qhov ntsuas kub ntawm recrystallization los ntawm kev siv cov txheej txheem ntawm kev ua haujlwm sov kom ua kom muaj zog ntxiv.Yog tias cov hlau zoo tungsten muaj lub zog tensile siab, tag nrho cov txheej txheem deformation yog
99.999% zoo tungsten hlau nrog txoj kab uas hla ntawm 0.015 hli, tensile lub zog ntawm 438 kgf / mm nyob rau hauv chav tsev kub
Ntawm cov hlau refractory, tungsten thiab tungsten alloys muaj qhov kub siab tshaj plaws ntawm cov yas hloov pauv.Cov yas hloov pauv kub ntawm sintered thiab melted polycrystalline tungsten cov ntaub ntawv yog hais txog 150 ~ 450 ℃, ua rau muaj teeb meem hauv kev ua thiab siv, thaum lub sij hawm ib leeg siv lead ua tungsten qis dua chav tsev kub.Interstitial impurities, microstructures thiab alloying ntsiab nyob rau hauv tungsten cov ntaub ntawv, raws li zoo raws li cov yas ua thiab deg lub xeev, muaj zoo cuam tshuam rau cov yas brittle hloov kub ntawm tungsten cov ntaub ntawv.Tsuas yog tias rhenium tuaj yeem txo cov yas hloov pauv kub ntawm cov ntaub ntawv tungsten, lwm cov ntsiab lus alloy muaj qhov cuam tshuam me ntsis ntawm kev txo cov yas hloov pauv kub (saib hlau ntxiv zog).
Tungsten tsis muaj oxidation tsis kam.Nws cov yam ntxwv oxidation zoo ib yam li molybdenum.Tungsten trioxide volatilizes saum 1000 ℃, ua rau "kev puas tsuaj" oxidation.Yog li ntawd, tungsten cov ntaub ntawv yuav tsum tau tiv thaiv los ntawm lub tshuab nqus tsev los yog inert cua thaum lawv siv kub.Yog hais tias lawv siv nyob rau hauv high-kub oxidation cua, tiv thaiv txheej yuav tsum tau ntxiv.
Folding tub rog riam phom kev lag luam
Nrog rau txoj kev loj hlob thiab kev loj hlob ntawm kev tshawb fawb, tungsten alloy cov ntaub ntawv tau dhau los ua cov khoom siv raw rau kev ua tub rog cov khoom niaj hnub no, xws li cov mos txwv, armor thiab shells, mos txwv hau, grenades, phom phom, mos txwv hau, mos txwv tsheb, armored tank, tub rog aviation, artillery. qhov chaw, phom, thiab lwm yam. Cov armor piercing projectile ua los ntawm tungsten alloy tuaj yeem tawg los ntawm cov cuab yeej thiab cov cuab yeej ua ke nrog lub kaum sab xis loj, thiab yog lub ntsiab tiv thaiv lub tank riam phom.
Tungsten alloys yog cov alloys raws li tungsten thiab tsim los ntawm lwm cov khoom.Ntawm cov hlau, tungsten muaj qhov siab tshaj plaws melting point, kub siab zog, creep resistance, thermal conductivity, hluav taws xob conductivity thiab electron emission kev ua tau zoo, uas yog ib qho tseem ceeb heev, tshwj tsis yog rau ib tug loj tus naj npawb ntawm daim ntawv thov nyob rau hauv lub tsim ntawm cemented carbides thiab alloy additives.
Tungsten thiab nws cov alloys yog dav siv nyob rau hauv cov khoom siv hluav taws xob thiab hluav taws xob teeb pom kev lag luam, nrog rau hauv aerospace, casting, riam phom thiab lwm yam lag luam los ua foob pob hluav taws nozzles, tuag-casting pwm, armor tho mos txwv cores, tiv tauj, cua sov thiab cua sov. ntaub thaiv npog.