Raws li tus neeg muag khoom ntawm graphite crucibles, Kuv feem ntau ntsib ntau yam kev nug los ntawm cov neeg siv khoom txog daim ntawv thov ntawm peb cov khoom. Ib lo lus nug uas tau tshwm sim tsis ntev los no yog seb lub graphite crucible puas tuaj yeem siv rau melting bio - cov ntaub ntawv. Hauv blog no, kuv mam li piav qhia txog cov ntsiab lus no, tshawb nrhiav qhov ua tau, qhov zoo, thiab cov teeb meem uas siv graphite crucibles rau melting bio - cov ntaub ntawv.
Nkag siab Graphite Crucibles
Ua ntej peb tham txog kev siv cov graphite crucibles rau bio - cov ntaub ntawv, cia peb xub nkag siab tias graphite crucibles yog dab tsi. Graphite crucibles yog cov thawv ua los ntawm siab - purity graphite cov ntaub ntawv. Lawv zoo - paub txog lawv zoo heev thermal conductivity, siab melting point (graphite muaj ib tug melting point ntawm ib ncig ntawm 3652 - 3697 degree), thiab zoo tshuaj stability. Cov khoom no ua rau lawv muaj kev xaiv nrov hauv ntau daim ntawv thov kev lag luam, tshwj xeeb tshaj yog hauv cov hlau smelting. Yog xav paub ntxiv txog peb cov khoom siv graphite, koj tuaj yeem mus saib peb cov nplooj ntawv Foundry Graphite Crucible thiab Foundry Graphite Crucibles nplooj ntawv.
Bio - cov ntaub ntawv thiab Lawv Cov Kev Xav Tau Kev Sib Tw
Bio - cov ntaub ntawv xa mus rau cov khoom uas cuam tshuam nrog cov kab mob lom. Lawv tuaj yeem yog ntuj lossis hluavtaws thiab siv ntau yam kev siv, xws li cov cuab yeej kho mob, cov ntaub so ntswg engineering, thiab kev xa tshuaj. Thaum nws los txog rau melting bio - cov ntaub ntawv, ntau hom muaj qhov sib txawv.
Qee cov bio - polymers, piv txwv li, muaj cov ntsiab lus melting tsawg, feem ntau nyob rau hauv thaj tsam ntawm 100 - 300℃. Cov polymers muaj xws li polyethylene, polypropylene, thiab polylactic acid (PLA). Ntawm qhov tod tes, qee qhov bio - ceramics thiab bio - iav yuav xav tau ntau qhov kub thiab txias rau melting, feem ntau tshaj 1000℃.
Kev siv Graphite Crucibles rau Melting Bio - cov ntaub ntawv
Thermal Suitability
Lub siab thermal conductivity ntawm graphite crucibles yog qhov zoo dua thaum melting bio - cov ntaub ntawv. Nws tso cai rau kev hloov pauv sai thiab sib xws, kom ntseeg tau tias cov khoom siv bio - melts tusyees. Rau bio - polymers nrog cov ntsiab lus melting tsawg, cov graphite crucible tuaj yeem ncav cuag qhov kub thiab txias, txo lub sij hawm melting thiab txo qhov kev pheej hmoo ntawm thermal degradation ntawm bio - khoom.
Rau bio - ceramics thiab bio - tsom iav nrog cov ntsiab lus melting siab, qhov siab melting point ntawm graphite ua rau nws muaj peev xwm tiv taus qhov kub thiab txias yam tsis muaj deforming lossis melting nws tus kheej. Qhov no txhais tau hais tias graphite crucibles tuaj yeem siv rau hauv siab - cov txheej txheem kub melting yuav tsum tau rau cov bio - cov ntaub ntawv.
Tshuaj Compatibility
Graphite yog tshuaj ruaj khov thiab muaj kev tiv thaiv zoo rau ntau yam tshuaj. Feem ntau, nws tsis hnov mob nrog bio - cov ntaub ntawv thaum lub sij hawm melting. Qhov no yog ib qho tseem ceeb heev vim hais tias ib qho tshuaj tiv thaiv ntawm crucible thiab bio - cov ntaub ntawv tuaj yeem paug cov bio - cov khoom, cuam tshuam rau nws cov khoom thiab kev ua haujlwm.
Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias qee qhov bio - cov ntaub ntawv yuav muaj cov khoom siv rov ua dua tshiab, xws li cov neeg ua haujlwm oxidizing muaj zog. Hauv cov xwm txheej zoo li no, muaj kev pheej hmoo ntawm cov tshuaj tiv thaiv ntawm graphite thiab oxidizing cov neeg ua haujlwm ntawm qhov kub thiab txias. Yog li ntawd, kev ntsuam xyuas tag nrho ntawm cov tshuaj muaj pes tsawg leeg ntawm bio - cov ntaub ntawv yog tsim nyog ua ntej siv graphite crucible.
Qhov zoo ntawm Kev Siv Graphite Crucibles rau Melting Bio - cov ntaub ntawv
Tus nqi - kev ua tau zoo
Graphite crucibles kuj raug nqi - zoo dua piv rau lwm hom crucibles ua los ntawm cov hlau muaj txiaj ntsig lossis cov alloys tshwj xeeb. Qhov no ua rau lawv muaj kev xaiv txaus nyiam rau cov khoom siv yaj bio -, tshwj xeeb tshaj yog nyob rau hauv loj - nplai ntau lawm. Lub neej ua haujlwm ntev ntawm graphite crucibles kuj ua rau kev txuag nyiaj hauv lub sijhawm ntev.
Ntau yam
Graphite crucibles tuaj yeem siv rau melting ntau yam bio - cov ntaub ntawv, los ntawm qis - melting - point polymers mus rau siab - melting - point ceramics thiab iav. Qhov kev ua tau zoo no ua rau lawv muaj txiaj ntsig zoo hauv kev tshawb fawb thiab kev tsim kho nrog rau kev tsim khoom ntawm bio - cov ntaub ntawv.
Yooj yim siv
Graphite crucibles yog ib qho yooj yim los lis thiab nruab. Lawv tuaj yeem siv tau rau hauv ntau hom rauv, nrog rau cov hluav taws xob rauv taws, lub tshuab hluav taws xob, thiab qhov cub induction. Qhov yooj yim hauv qhov cub ua kom sib haum ua rau nws yooj yim rau cov neeg siv los koom ua ke graphite crucibles rau hauv lawv cov txheej txheem melting uas twb muaj lawm.
Muaj peev xwm sib tw thiab kev daws teeb meem
Oxidation
Graphite tuaj yeem oxidize ntawm qhov kub thiab txias thaum muaj oxygen. Thaum melting bio - cov ntaub ntawv, tshwj xeeb tshaj yog nyob rau hauv high kub, muaj kev pheej hmoo ntawm graphite oxidation, uas yuav txo tau lub neej kev pab cuam ntawm crucible thiab tej zaum yuav paug cov bio - cov ntaub ntawv.
Txhawm rau daws qhov teeb meem no, cov txheej txheem tiv thaiv tuaj yeem siv rau saum npoo ntawm graphite crucible. Cov txheej txheem no ua ib qho thaiv ntawm graphite thiab oxygen, tiv thaiv oxidation. Tsis tas li ntawd, cov txheej txheem melting tuaj yeem ua tau nyob rau hauv qhov chaw tsis muaj roj, xws li nitrogen lossis argon, kom txo tau cov pa oxygen.
Kev kis kab mob
Txawm hais tias graphite feem ntau yog tshuaj lom neeg ruaj khov, tseem muaj kev pheej hmoo me me ntawm kev sib kis. Piv txwv li, cov kab ntawm cov impurities hauv cov graphite crucible tuaj yeem nkag mus rau hauv bio - cov ntaub ntawv thaum lub sij hawm melting txheej txheem.
Txhawm rau txo qhov kev pheej hmoo ntawm kev sib kis, siab - purity graphite yuav tsum tau siv los tsim cov crucibles. Tsis tas li ntawd, cov crucibles yuav tsum tau muab ntxuav kom zoo thiab ua ntej - kho ua ntej siv los tshem tawm cov kab mob ntawm qhov chaw.
Kev siv ntawm Graphite Crucibles hauv Bio - cov khoom Melting
Kev tsim khoom siv kho mob
Hauv kev tsim cov khoom siv kho mob, xws li kev cog hniav thiab cov khoom siv prosthetics, bio - cov ntaub ntawv yuav tsum tau yaj thiab molded rau hauv cov duab tshwj xeeb. Graphite crucibles tuaj yeem siv los yaj bio - polymers thiab bio - ceramics, uas feem ntau siv hauv cov ntawv thov no. Cov txheej txheem melting muab los ntawm graphite crucibles ua kom zoo thiab sib xws ntawm cov khoom siv kho mob.
Tissue Engineering
Cov ntaub so ntswg engineering koom nrog kev tsim cov ntaub so ntswg thiab cov kabmob. Bio - cov ntaub ntawv yog siv los tsim scaffolds uas txhawb kev loj hlob ntawm tes. Graphite crucibles tuaj yeem siv los yaj bio - polymers thiab bio - iav los tsim cov Scaffolds. Lub peev xwm los tswj cov txheej txheem melting precisely siv graphite crucibles yog qhov tseem ceeb rau kev tsim scaffolds nrog cov khoom xav tau.
Xaus
Hauv kev xaus, graphite crucibles tuaj yeem siv rau melting bio - cov ntaub ntawv, thiab lawv muaj ntau yam zoo, suav nrog thermal haum, tshuaj sib raug zoo, tus nqi - kev ua tau zoo, ntau yam, thiab siv tau yooj yim. Txawm li cas los xij, tseem muaj cov kev cov nyom, xws li oxidation thiab kev sib kis, uas yuav tsum tau daws.
Raws li graphite crucible tsum, peb tau cog lus los muab siab - cov khoom zoo thiab kev txhawb nqa rau peb cov neeg siv khoom. Yog tias koj txaus siab siv graphite crucibles rau melting bio - cov ntaub ntawv los yog muaj lus nug txog peb cov khoom, thov koj xav tiv tauj peb kom muaj kev sib tham ntxiv thiab kev yuav khoom. Koj tuaj yeem tshawb xyuas peb Graphite Tube rau lwm yam khoom siv graphite.
Cov ntaub ntawv
Zhang, X., Li, Y. (2018). Cov khoom cua sov ntawm cov ntaub ntawv graphite thiab lawv cov ntawv thov hauv siab - txheej txheem kub. Phau ntawv Journal of Materials Science, 53(10), 7256 - 7268.
Wang, J., & Chen, S. (2019). Chemical compatibility ntawm graphite crucibles nrog cov khoom sib txawv. Phau ntawv Journal of Chemical Engineering, 27(3), 456 - 463.
Brown, RA, & Ntsuab, MJ (2020). Bio - cov ntaub ntawv: Khoom thiab daim ntawv thov. Cambridge University Press.