Tungsten nthuav tawm lub cev-centered cubic (bcc) lattice. Nws muaj qhov siab tshaj plaws melting point ntawm cov hlau, 3,410 degree C (6,170 degree F), thiab yog cov conductive heev. Vim tias qhov sib xyaw ua ke tshwj xeeb ntawm cov khoom no, nws tau dav siv los ua ib qho filament hauv cov teeb pom kev zoo, kev sib cuag hluav taws xob, thiab ua ib qho hluav taws xob emitter hauv cov khoom siv hluav taws xob.
Tungsten kuj tau siv dav los ua cov khoom siv alloying hauv cov cuab yeej steel thiab hnav-resistant alloys. Tungsten carbide yog siv los txiav cov cuab yeej thiab cov ntaub ntawv nyuaj vim nws cov tawv tawv thiab hnav tsis kam. Cov hlau yog nkig nyob rau hauv chav tsev kub tab sis ductile thiab muaj zog ntawm qhov kub thiab txias. Nws cov alloys yog siv nyob rau hauv lub foob pob hluav taws cav nozzles thiab lwm yam kev siv aerospace.
Cov txheej txheem ntawm kev uatungsten rodstsis nyuaj thiab nyuaj. Cov neeg muag khoom tungsten tsim tungsten rods los ntawm kev sib tsoo tungsten hlau ore rau hauv cov hmoov zoo. Cov hmoov yog tom qab ntawd kho tshuaj los tsim tungsten oxide, uas yog rhuab kom txo cov hlau ore hmoov rau hauv cov hmoov tungsten ntshiab.
Cov hmoov ntshiab no tau muab tso rau hauv pwm thiab hydraulically nias rau hauv lub pas nrig. Vim hais tias tus pas nrig resulting yog nkig heev, cov chaw tsim tshuaj paus yuav tsum ces sinter tus pas nrig. Sintering txuas ntxiv khi cov hmoov hlau rau hauv tus pas nrig, npaj tus pas nrig rau kev xa mus rau cov chaw tsim khoom.
Cov tshuaj tiv thaiv thiab kev pom cuam tshuam nrog kev ua kom zoo dua qub thiab ua tiav qhov xav tau purity theem yog txheej txheem nyuaj thiab meej, tab sis feem ntau ua rau cov hmoov purity siab. Yog li ntawd, qhov loj me thiab cov duab ntawm cov hmoov tuaj yeem sib txawv nyob ntawm lub hom phiaj npaj. Qee lub sij hawm nws yog siv los ua hmoov, tab sis ntau zaus nws yog compressed thiab teem rau hauv ib daim ntawv.
Qhov kev sib sau ua ke no suav nrog cov txheej txheem ntau yam ntsig txog qhov kub siab, hluav taws xob tam sim no, thiab huab cua hydrogen. Thaum lub sij hawm txoj kev no, lub tungsten condenses thiab hardens, tsim ib daim hlab. Nyob rau ntawm lub sijhawm no, tus pas nrig tungsten tsis muaj qhov elasticity thiab lub zog uas xav tau rau kev tsim khoom thiab yuav tsum tau ua haujlwm ntxiv kom nws tuaj yeem dov, kos, lossis flattened rau hauv qhov kawg xav tau.
Kev ua haujlwm tom qab feem ntau yog rub tus pas nrig tungsten los ntawm kev tuag, dov nws los ntawm lub tshuab dov thiab siv cov kub kub thiab hluav taws xob tam sim no.
Ntim: Cov ntim sib txawv tuaj yeem muab tau raws li cov neeg siv khoom xav tau.
Nco tseg: Cov khoom lag luam nrog lwm cov kev qhia tshwj xeeb tuaj yeem tsim tau raws li cov neeg siv khoom xav tau