Keeb kwm ntawm tungsten

Jan 05, 2024 Tso lus

Tungsten yog cov hlau tsis muaj hlau thiab cov hlau tseem ceeb, thiab tungsten ore tau hu ua "pob zeb hnyav" nyob rau hauv ancient sij hawm. Nyob rau hauv 1781, scheelite tau pom los ntawm Swedish chemist Carl Wilhelm Scherer, thiab ib tug tshiab elemental acid - tungsten acid tau muab rho tawm, thiab nyob rau hauv 1783, wolframite twb nrhiav tau los ntawm Spaniard Depurja, thiab tungsten acid kuj tau muab rho tawm los ntawm nws, thiab tib yam. xyoo, tungsten hmoov tau txais thawj zaug los ntawm kev txo cov tungsten trioxide nrog carbon, thiab lub caij muaj npe. Tus nqi ntawm tungsten nyob rau hauv lub ntiaj teb crust yog 0.001%. Muaj 20 tungsten-muaj cov zaub mov uas tau tshawb pom. Tungsten deposits feem ntau yog tsim nrog cov kev ua ntawm granite magma. Tom qab smelting, tungsten yog ib tug silvery-dawb lustrous hlau nrog ib tug heev melting point thiab zoo hardness. Tungsten yog cov hlau uas muaj qhov siab tshaj plaws melting point.


Nyob rau hauv lub 50s ntawm lub xyoo pua 18th, chemists pom cov nyhuv ntawm tungsten rau cov khoom ntawm hlau. Txawm li cas los xij, tungsten steel pib tsim thiab dav siv nyob rau hauv lig 19th thiab ntxov 20th centuries.


Nyob rau hauv 1900, nyob rau hauv lub Universal Exhibition nyob rau hauv Paris, high-ceev steel tau nthuav tawm thawj zaug. Yog li ntawd, kev lag luam tungsten extraction tau tsim sai heev. Lub advent ntawm no steel cim ib tug loj technologies ua ntej nyob rau hauv lub teb ntawm hlau txiav ua. Tungsten tau dhau los ua qhov tseem ceeb tshaj plaws alloying.


Nyob rau hauv 1900, Lavxias teb sab inventor AN Ладыгин thawj zaug npaj siv tungsten nyob rau hauv lub teeb pom kev zoo. Xyoo 1909, tom qab Кулидж tau tsim cov txheej txheem raws li cov hmoov hlau metallurgy thiab kev ua haujlwm siab, tungsten tuaj yeem siv dav hauv hluav taws xob nqus tshuab.


Los ntawm 1927 txog 1928, tungsten carbide tau siv los ua cov khoom tseem ceeb los tsim cov cemented carbide, uas yog ib qho tseem ceeb hauv kev tsim kho keeb kwm ntawm tungsten. Cov alloys no tshaj cov cuab yeej zoo tshaj plaws hauv txhua qhov kev hwm thiab tau siv dav hauv cov cuab yeej siv niaj hnub no.