Hauv kev lag luam metallurgy thiab cov ntaub ntawv science,graphite silicon carbide cruciblesua lub luag haujlwm tseem ceeb hauv ntau yam txheej txheem xws li melting, casting thiab kev kho cua sov ntawm cov hlau. Txawm li cas los xij, kev ncaj ncees ntawm covgraphite silicon carbide crucible tuaj yeem cuam tshuam los ntawm ntau yam, ua rau cov kab nrib pleb thiab muaj peev xwm ua tsis tiav. Kev nkag siab txog qhov ua rau thiab kev tiv thaiv ntawm cov kab nrib pleb no yog qhov tseem ceeb rau kev ua kom muaj txiaj ntsig thiab kev nyab xeeb ntawm cov txheej txheem kev lag luam.
Ib hom kev tawg uas tuaj yeem tshwm sim hauv agraphite silicon carbide crucible yog transverse tawg nyob rau hauv qab. Cov kab nrib pleb no feem ntau tshwm sim vim qhov hloov pauv sai ntawm qhov kub thiab txias thaum lub sij hawm preheating, tapping hauv qab nrog ib qho khoom tawv, thermal expansion ntawm cov hlau seem, los yog cuam tshuam ntawm cov khoom cam khwb cia. Kev kub ceev ceev thaum lub sij hawm preheating tuaj yeem raug tusgraphite silicon carbide crucible mus rau thermal stress, ua rau tsim cov kab nrib pleb. Tsis tas li ntawd, ntaus hauv qab nrog ib qho khoom siv tawv lossis ntaus cov khoom siv casting tuaj yeem ua rau tsis muaj zoggraphite silicon carbide crucible's structural kev ncaj ncees, ua rau nws yooj yim rau breakage.
Lwm hom kev hloov pauv tuaj yeem tshwm sim txog ib nrab ntawm txoj kevgraphite silicon carbide crucible thiab feem ntau yog ntaus nqi los tso covgraphite silicon carbide crucible ntawm lub hauv paus tsis tsim nyog, siv zog ntau dhau ntawm txoj haujlwm clamping ntawm lubgraphite silicon carbide crucible Tongs, los yog tsis raug burner tswj uas ua rau cov cua sov tsis sib xws. Tso lubgraphite silicon carbide crucible ntawm lub hauv paus tsis tsim nyog tuaj yeem tsim cov ntsiab lus kev ntxhov siab uas tuaj yeem ua rau tawg. Ib yam li ntawd, lub zog ntau dhau nyob rau hauv txoj hauj lwm clamping ntawm lubgraphite silicon carbide crucible clamp yuav exert uneven siab ntawm lubgraphite silicon carbide crucible, ua raugraphite silicon carbide crucible ua txhaum. Tsis tas li ntawd, kev tswj lub tshuab hluav taws xob tsis raug tuaj yeem ua rau cov cua sov tsis sib xws, uas tuaj yeem ua rau thermal stress thiab tawg tsim.
Thaum siv lub ncuavgraphite silicon carbide crucible nrog ib lub qhov ncauj, vim tsis tsim nyog installation, lub refractory av nyob rau hauv lubgraphite silicon carbide crucible lub qhov ncauj yog nyem, thiab transverse kab nrib pleb yuav tshwm nyob rau hauv qis ib feem ntawm lubgraphite silicon carbide crucible qhov ncauj. Qhov no misalignment tuaj yeem tsim cov ntsiab lus siab uas tuaj yeem ua rau covgraphite silicon carbide crucible tawg.
Tsis tas li ntawd, cov kab nrib pleb ntev khiav mus rau hauv qab ntawm qhov qis qis ntawm qhov tshiabgraphite silicon carbide crucible tej zaum yuav tshwm sim los ntawm qhov txiasgraphite silicon carbide crucible raug hluav taws kub kub los yog cua kub hauv qab sai heev thaum lub caij txias. Thermal stresses generated los ntawm cov teebmeem no tuaj yeem ua rau cov kab nrib plebgraphite silicon carbide crucible hauv qab, feem ntau nrog glaze tev thiab lwm yam tshwm sim.
Txhawm rau txo qhov tshwm sim ntawm cov kab nrib pleb no, muaj qee qhov kev tiv thaiv uas tuaj yeem ua tau. Xyuas kom meej tias qhov kub thiab txias yog tswj tau thiab maj mam nce thaum lub sij hawm preheating yuav pab txo qis thermal stress ntawm lubgraphite silicon carbide crucible. Tsis tas li ntawd, siv cov cuab yeej tsim nyog thiab cov txheej txheem tuav, xws li tsis txhob tsoo hauv qab nrog cov khoom tawv thiab ua kom covgraphite silicon carbide crucible yog ntsia kom raug, tuaj yeem pab tiv thaiv cov kab nrib pleb los ntawm kev sib sau. Kev tso kawm kom rauggraphite silicon carbide crucible ntawm lub hauv paus tsim nyog thiab ceev faj tswj ntawm clamping quab yuam kuj yuav pab txo qhov kev pheej hmoo ntawm cov kab nrib pleb. Tsis tas li ntawd, kev tswj xyuas cov cua sov tsis sib xws thiab zam kev hloov pauv ntawm qhov kub thiab txias tuaj yeem pab tiv thaiv thermal stresses thiab tawg los ntawm kev tsim nyob rau hauv.graphite silicon carbide crucible.
Nyob rau hauv cov ntsiab lus, nkag siab qhov ua rau ntawm transverse thiab longitudinal tawg nyob rau hauvgraphite silicon carbide crucibles yog qhov tseem ceeb rau kev tswj xyuas kev ncaj ncees thiab kev ua haujlwm ntawm cov khoom tseem ceeb hauv cov txheej txheem kev lag luam. Los ntawm kev ua raws li kev ceev faj tsim nyog thiab kev tuav cov txheej txheem, qhov tshwm sim ntawm cov kab nrib pleb no tuaj yeem raug txo kom tsawg, ua kom muaj txiaj ntsig thiab kev nyab xeeb ntawm kev ua haujlwm metallurgical.
Post lub sij hawm: Apr-16-2024