Kev Txhim Kho Keeb Kwm ntawm Silicon carbide crucible

Hauv kev lag luam metallurgy, cov keeb kwm tsim khoom ntawm Silicon carbide crucible siv rau smelting non-ferrous hlau tuaj yeem taug qab mus rau xyoo 1930s. Nws cov txheej txheem nyuaj suav nrog cov khoom siv raw crushing, batching, tes spinning lossis yob txoj kev, ziab, tua, oiling thiab ya raws-pov thawj. Cov khoom xyaw siv muaj xws li graphite, av nplaum, pyrophyllite clinker los yog high-alumina bauxite clinker, monosilica hmoov los yog ferrosilicon hmoov thiab dej, tov nyob rau hauv ib qho kev faib ua feem. Nyob rau tib lub sijhawm, silicon carbide tau koom ua ke los txhim kho thermal conductivity thiab txhim kho zoo. Txawm li cas los xij, txoj kev no ib txwm muaj kev siv hluav taws xob ntau, lub voj voog ntev ntev, thiab kev poob loj thiab deformation nyob rau hauv cov khoom ua tiav ib nrab.

Nyob rau hauv sib piv, niaj hnub no tus txheej txheem crucible siab tshaj plaws yog isostatic nias. Lub tshuab no siv graphite-silicon carbide crucible, nrog phenolic resin, tar lossis asphalt ua tus neeg sawv cev, thiab graphite thiab silicon carbide ua cov ntaub ntawv tseem ceeb. Lub resulting crucible muaj tsawg porosity, siab ceev, uniform zoo nkauj thiab muaj zog corrosion kuj. Txawm tias muaj txiaj ntsig zoo, cov txheej txheem combustion tso tawm cov pa phem thiab plua plav, ua rau muaj kuab paug ib puag ncig.

Cov evolution ntawm Silicon carbide crucible ntau lawm qhia txog kev lag luam txoj kev nrhiav kev ua tau zoo, zoo thiab ib puag ncig lub luag haujlwm. Raws li kev siv thev naus laus zis, kev tsom mus rau kev tsim cov txheej txheem los txo qis kev siv hluav taws xob, txo cov voj voog ntau lawm thiab txo qhov cuam tshuam ib puag ncig. Crucible manufacturers tab tom tshawb nrhiav cov ntaub ntawv tshiab thiab cov txheej txheem kom ua tiav cov hom phiaj no, txhawm rau txhawm rau sib npaug ntawm kev coj noj coj ua thiab niaj hnub. Raws li kev thov rau cov hlau tsis-ferrous smelting txuas ntxiv zuj zus, kev txhim kho hauv crucible ntau lawm yuav ua lub luag haujlwm tseem ceeb hauv kev tsim lub neej yav tom ntej ntawm metallurgy.