Thaum tungsten tau kub, nws nthuav tawm ntau yam khoom nthuav. Tungsten muaj qhov siab tshaj plaws melting point ntawm tag nrho cov hlau ntshiab, nyob rau hauv 3,400 degrees Celsius (6,192 degrees Fahrenheit). Qhov no txhais tau hais tias nws tuaj yeem tiv taus qhov kub siab heev yam tsis muaj melting, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau cov ntawv thov uas yuav tsum tau muaj kev kub ntxhov siab, xws li cov teeb ci incandescent,cua kub ntsiab, thiab lwm yam kev lag luam siv.

Ntawm qhov kub thiab txias, tungsten kuj dhau los ua cov tshuaj tiv thaiv corrosion, ua rau nws haum rau siv nyob rau hauv ib puag ncig uas lwm yam hlau yuav degrade. Tsis tas li ntawd, tungsten muaj cov coefficient tsawg heev ntawm thermal expansion, txhais tau tias nws tsis nthuav lossis cog lus loj heev thaum rhuab los yog txias, uas ua rau nws muaj txiaj ntsig zoo hauv cov ntawv thov kom muaj qhov ruaj khov ntawm qhov kub siab. kev ncaj ncees thiab nthuav tawm cov khoom tshwj xeeb uas ua rau nws muaj txiaj ntsig zoo hauv ntau qhov kev siv kub-kub.

Tungsten hlau yog cov khoom siv feem ntau siv hauv cov khoom siv hluav taws xob, teeb pom kev zoo, thiab lwm yam. Nws tuaj yeem nthuav dav vim muaj qhov kub thiab txias thaum siv mus ntev. Tungsten xaim dhau qhov nthuav dav thiab kev cog lus thaum lub sijhawm hloov pauv kub, uas yog txiav txim siab los ntawm nws cov khoom siv lub cev. Thaum qhov kub thiab txias, qhov molecular thermal zog ntawm tungsten hlau nce, qhov cuam tshuam ntawm kev sib cuam tshuam tsis muaj zog, ua rau muaj kev hloov me ntsis ntawm qhov ntev ntawm tungsten hlau, uas yog, nthuav phenomenon tshwm sim.

Kev nthuav dav ntawm tungsten hlau yog linearly ntsig txog qhov kub thiab txias, uas yog, raws li qhov kub thiab txias, qhov nthuav dav ntawm tungsten hlau kuj nce. Feem ntau, qhov kub ntawm tungsten xaim muaj feem xyuam rau nws lub zog hluav taws xob. Hauv cov khoom siv hluav taws xob, tungsten hlau feem ntau ua haujlwm ntawm 2000-3000 degrees Celsius. Thaum qhov kub siab tshaj 4000 degrees, qhov nthuav dav ntawm tungsten hlau nce ntau, uas tuaj yeem ua rau kev puas tsuaj rau tungsten hlau.

Kev nthuav dav ntawm tungsten hlau yog tshwm sim los ntawm kev siv zog ntawm molecular thermal zog thiab qhov nce ntawm atomic vibration zaus tom qab cua sov, uas ua rau tsis muaj zog ntawm cov atoms thiab ua rau muaj kev nce hauv atomic nrug. Tsis tas li ntawd, tus nqi ntawm kev nthuav dav thiab so ntawm tungsten hlau kuj cuam tshuam los ntawm kev hloov kev ntxhov siab. Nyob rau hauv ib txwm muaj xwm txheej, tungsten hlau yog raug rau cov kev ntxhov siab nyob rau hauv cov lus qhia sib txawv, ua rau muaj qhov sib txawv ntawm qhov sib txawv thiab kev sib cog lus ntawm qhov kub thiab txias.

Qhov kub hloov pauv ntawm tungsten hlau tuaj yeem ua rau muaj qhov tshwm sim nthuav dav, thiab tus nqi nthuav dav yog proportional rau qhov kub thiab cuam tshuam los ntawm kev hloov pauv kev ntxhov siab. Thaum tsim thiab tsim cov khoom siv hluav taws xob, nws yog ib qho tsim nyog yuav tsum tswj xyuas qhov kub thiab txias ntawm cov tungsten hlau kom tsis txhob muaj kev nthuav dav ntawm tungsten hlau nyob rau hauv ib puag ncig kub thiab kev puas tsuaj.