Tungsten crucible yog ib qho ntawm cov khoom siv hlau tungsten. Nws yog tsuas yog muab faib ua sintering molding (siv rau hmoov metallurgy technology), stamping molding, thiab spinning hom. Nws yog tsim los ntawm tig tungsten rods (feem ntau me me nyob rau hauv loj) thiab welded rau hauv ntau yam duab. Nws yog ua los ntawm ntshiab tungsten daim hlau, tungsten nplooj thiab ntshiab tungsten rods ua tiav los ntawm cov txheej txheem sib xws.
Tungsten crucible tshuaj muaj zog;
Tungsten yog ib qho tsis tshua muaj siab melting point hlau uas tuaj yeem txhim kho qhov kub-kub hardness ntawm hlau. Nws belongs rau Group VIB nyob rau hauv lub thib rau lub sij hawm ntawm lub sij hawm ntawm lub ntsiab lus. Tungsten yog cov hlau dawb-dawb uas zoo li hlau. Tungsten muaj qhov siab melting point, tsawg vapor siab, thiab tsawg evaporation tus nqi.
Cov yam ntxwv ntawm tungsten yog ruaj khov heev. Nws tsis hnov mob nrog huab cua thiab dej ntawm chav tsev kub. Yog tsis muaj cua sov, ib qho concentration ntawm hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid thiab aqua regia tsis cuam tshuam rau tungsten. Thaum qhov kub nce mus txog 80 degree -100 Thaum degree , ntawm ntau cov kua qaub uas tau hais los saum toj no, tshwj tsis yog hydrofluoric acid, lwm cov kua qaub muaj zog ntawm tungsten.
Nyob rau hauv chav tsev kub, tungsten tuaj yeem yaj sai sai hauv cov kua qaub sib xyaw ntawm hydrofluoric acid thiab concentrated nitric acid, tab sis nws tsis ua haujlwm hauv cov tshuaj alkaline. Nyob rau hauv lub xub ntiag ntawm huab cua, molten alkali tuaj yeem oxidize tungsten rau hauv tungstate. Nyob rau hauv lub xub ntiag ntawm oxidants (NaNO3, NaNO2, KClO3, PbO2), cov tshuaj tiv thaiv tsim tungstate yog nruj dua. Nws tuaj yeem ua ke nrog cov tshuaj chlorine, bromine, iodine, carbon, nitrogen, sulfur, thiab lwm yam ntawm qhov kub thiab txias, tab sis tsis nrog hydrogen. Ntxiv rau cov khoom siv saum toj no, lub tuam txhab tseem muab cov tungsten rods, tungsten nplooj ntawv thiab lwm yam khoom.
