Tungsten’s keeb kwm

Tungsten carbide yog cov khoom sib xyaw uas muaj WC raws li theem nyuaj thiab cobalt (Co) raws li qib binder.Cov ntaub ntawv keeb kwm no tuaj yeem rov qab mus rau xyoo 1700s. Lub sijhawm ntawd, cov neeg ua haujlwm mining hauv Erz Roob hauv Saxony Lub Tebchaws Yelemees pom tias qee qhov ore yuav cuam tshuam nrog kev txo qis.cassiterite thiab tsim slag.Byog tungstenthawj muab rho tawm los ntawm ore wolframitelos ntawm Juan JoseD’Elhuyar thiab nws tus tij laug Fausto. Tnyob muajtsuas yog txo tungstic acid siv charcoal los tsim cov hlau.Los ntawm kev ua li ntawd, lawv tau pom tias qhov siab tshaj plaws melting point ntawm lub caij no3422degrees Celsius ---- Cov hlau nrog lub siab tshaj plaws melting pointtshaj ob zaug lub melting point ntawm platinum.Xyoo 1841, kws tshuaj kws tshuaj Robert Oxland tau txais British patent txoj cai rau kev tsim cov tshuaj sodium tungstate, tungstic acid, thiab hlau tungsten. Qhov no yog qhov tseem ceeb ua ntej hauv keeb kwm niaj hnub ntawm tungsten chemistry thiab qhib txoj hauv kev rau kev tsim khoom ntawm tungsten.

Xyoo 1896, kev sib tsoo ntawm tungsten carbide tau coj kev hloov pauv rau kev lag luam thiab muaj kev cuam tshuam loj rau tag nrho lub zej zog.It tau pom los ntawmHenri Moissanleej twg yog tusNobel nqi zog yeejr. Nrhiav los tsiman pob zeb diamond dag, Moisson rhuab qab zib thiab tungsten oxide nyob rau hauv ib lub qhov cub. Cov piam thaj ua raws li tus neeg sawv cev txo qis rau oxide rau cov khoome melted tungsten carbide. Nws pom tau tias muaj qee yam khoom tsim nyog, tab sis nws yog nkig dhau los siv rau hauv kev lag luam.However, Lub Osram Teeb Ua Haujlwm ntawm Berlin wholees paubzejlub peev xwm carbide Tsis ntev los no tau txeeb lub sijhawm los tsim cov khoom siv hlau nplaum, nrog cov tungsten carbide hais tau muab tso rau hauv cobalt matrix. Cov carbide yog qhov nyuaj heev thiab tseem muaj plaub zaug tuab li titanium. Qhov industry tau ua haujlwm sai sai ntawm cov khoom siv hlau hauv nws cov txheej txheem tsim khoom. 

In 1913, Ib qho tsis txausofmuaj pob zeb diamonds hauv lub teb chaws Yelemees coj cov kws tshawb fawb los nrhiav lwm txoj hauv kev rau pob zeb diamond tuag, uas yog siv los kos hlau.

Lub tuam txhab German hluav taws xob teeb xa tawm patent rau tungsten carbide los yog nyuaj hlau hauv 1923. Nws yog tsim los ntawm "cementing"heevnyuaj tungsten mono carbide (WC) nplej nyob rau hauv ib tug binder matrix ntawm tawv cobalt hlau los ntawm cov kua theem sintering. Cov txiaj ntsig tau hloov pauv keeb kwm ntawm tungsten: cov khoom sivuascombines siab zog, toughness, thiab siab hardness.

Thaum lub ntiaj tebWWII, cov Germans yog thawj zaug siv tungsten carbide core nyob rau hauv siab-ceev armor-piercing projectiles. British tanks zoo li "melted" thaum ntaus los ntawm cov tungsten carbide projectiles.

Cov1950s: Txoj kev loj hlob ntawm cov hlau, npib tsib xee, thiab cobalt-based superalloys pib ua kom tiav qhov kev xav tau ntawm cov khoom siv uas tuaj yeem tiv taus qhov kub tsis txaus ntawm cov tshuab dav hlau.

1960-1990: Tungsten carbide yogheevnyuaj,Pob zeb diamond yogtsuas yog cov khoom ntuj uas tuaj yeem khawb nws.

Nowniaj hnub tungsten carbide yog dav heev, thiab nws daim ntawv thov suav nrogs hlau txiav, machining ntawm ntoo, composites, mos ceramics, chipless forming (kub thiab txias), mining, kev tsim kho, pob zeb drilling, structural yam, hnav qhov chaw, thiab tub rog Cheebtsam. Los ntawm extra-grippy cycling tires rau cov cuab yeej phais kom meej, nws yog ib qho nyuaj los nrhiav cov khoom siv ruaj khov uas tsis siv qee hom carbid.e.