Yuav ua li cas Yog refractory Co?

Hais txog refractory co, nws yog to taub dab tsi co poob nyob rau hauv lub ntsiab txhais no. Vanadium, tungsten, molybdenum, niobium, rhenium, tantalum, zirconium thiab hafnium - co uas nws melting kub nce mus txog 1650-1700 ° C.

Nyob rau hauv cov ntshiab daim ntawv no, refractory co tsis tshwm sim nyob rau hauv cov xwm. Lawv tau txais los ntawm ore concentrates siv ib tug complex peb-theem tshuab. Thawj kauj ruam muaj nyob rau hauv qhib lub concentrate, ces muaj yog lub rho tawm thiab purification tshuaj tebchaw thiab thaum kawg - rov qab thiab refining ntawm hlau.

Lub Scope ntawm kev siv cov refractory co yog dav txaus. Refractory co siv nyob rau hauv mechanical engineering, shipbuilding, electronics thiab tshuaj industries, vim hais tias ntawm lawv cov cim zog, namely lawv siv raws li thaum tshav kub kub resistant alloys cov ntaub ntawv.

Xav txog txhua yam ntawm refractory co nyias.

Vanadium - khoom hlau steel-grey nyob rau hauv cov xim. Lub npe ntawm no hlau yog nyob rau hauv Honor ntawm tus vajtswv poj niam ntawm kev zoo nkauj Vanadis, ua tsaug rau cov xim ntawm cov ntsev uas yog muaj nyob rau hauv nws muaj pes tsawg leeg. Vanadium yog resistant rau dej thiab ntau yam acids. Nws yog siv nyob rau hauv qhov siv thiab ua roj hmab, tej hub, iav, thiab ntawm cov hoob kawm steels. Raws li ib tug zoo electrode nyob rau hauv lub roj teeb yog siv vanadium pentoxide.

Tungsten - grey khoom hlau, siv tus qauv tej yam kev mob nws yuav muab hu ua cov feem ntau refractory hlau, siv nyob rau hauv metallurgy li ib lub hauv paus. Lub npe ntawm lub tungsten mineral wolframite tau txais los ntawm (nyob rau hauv txoj kab. Nrog nws. "Hma ua npuas ncauj"), uas yog lub npe hu nyob rau hauv lub xyoo pua 15th raws li tungsten hampered tin smelting. Wolfram pom nws daim ntawv thov nyob rau hauv qhov siv thiab ua tshwj xeeb tej nkoj nquam siv rau loj hlob ib muaju, melting iav, thiab lwm yam ..

Molybdenum - refractory hlau silvery-dawb xim. Molybdenum tsis yog raug rau oxidation thiab cov tshuaj tiv thaiv nrog hydrogen tshwm sim thaum molybdenum nce mus txog lub melting point (2620 ° C). Nws siv nyob rau hauv qhuav ntawm filaments rau hluav taws xob teeb, raws li zoo raws li rau qhov siv thiab ua cov hluav taws xob cathodes pab kiag li lawm.

Niobium - lub teeb grey refractory hlau, yooj yim kho tau, resistant rau corrosion. Yog ib feem ntawm cov stainless steel, Thaum tshav kub kub-resistant thiab corrosion-resistant alloys, kev txhim kho lawv cov txhua yam khoom.

Rhenium yog cov loj tshaj plaws ntawm refractory hlau. Alloys ntawm no lub teeb grey hlau nrog tungsten thiab molybdenum hluav taws kuj thiab yog siv rau cov zus tau tej cov supersonic aircraft thiab cuaj luaj.

Tantalum - sib ruaj khov refractory hlau lub teeb grey nrog ib tug liab doog Hawj txawm. Lub metallurgy yog siv raws li ib feem ntawm corrosion-resistant, Thaum tshav kub kub-resistant thiab nyuaj alloys.

Ntshiab zirconium yog ci iab hlau uas yog ib qho yooj yim ua ob kub thiab txias ua hauj lwm. Lub qhov txawv feature ntawm cov hlau nyob rau hauv hais tias nws muaj ib tug heev kuj mus corrosion.

Hafnium yog pom nyob rau hauv zirconium ores. Hlau nrog nyiaj glitter, yog siv los tsim ntxeem tau dej cores ntawm nuclear reactors.