Daim ntawv qhia rau graphite silicate sibide crucailes: tus yuam sij rau high-ua tau zoo mellurgy

Nyob hauv lub ntiaj teb ntawm Metallurgy thiab cov ntaub ntawv kawm txuj ci,tus crucibleyog cov cuab yeej tseem ceeb rau melting thiab casting hlau. Ntawm ntau hom crucailes, graphite silicon carbide (sic) crucibles sawv tawm rau lawv cov khoom siv thermal tsis txaus, thiab zoo nkauj tshuaj ruaj khov. Hauv tsab xov xwm no, peb yuav delve rau hauv daim ntawv qhia rau graphite sic crucibles thiab tshawb nrhiav li cas lawv cov kev ua tau zoo ua rau lawv cov kev ua tau zoo ntawm cov kev siv kub siab.

Cov khoom xyaw yooj yim

Thawj Cheebtsam ntawm Graphite Sic CruciBles yog Fleake Graphite thiab silicon carbide. Fleake graphite, feem ntau yog constituting 40% -50% ntawm crucal, muab cov thermal bermal thiab lubricity, uas pab nyob rau hauv qhov yooj yim tso tawm ntawm cov hlau cam khwb cia. Silicon carbide, ua 20% -50 ntawm crucible, yog lub luag haujlwm rau Crucible, lub zog hluav taws xob tsis kam thiab ntsuas kub.

Cov khoom sib ntxiv ntxiv rau kev ua tau zoo

Txhawm rau txhawm rau txhim kho qhov kev ua tau zoo thiab tshuaj lom neeg ruaj khov ntawm cov crucible, ntxiv cov khoom sib piv tau ntxiv rau daim ntawv qhia:

1. Silicon hmoov (4% -10%): Txhim kho lub zog siab thiab oxidation tsis kam ntawm tus ntoo khaub zig.
2. Boron carbide hmoov (1% -5%): Ua kom cov tshuaj ruaj khov ruaj khov thiab tiv taus rau cov hlau corrosive.
3. Av nplaum (5% -15%): Ua raws li phau ntawv thiab txhim kho cov tshuab zog muaj zog thiab thermal ruaj khov ntawm cov crucible.
4. Thermosetting binder (5% -10%): Pab hauv kev khi txhua qhov sib xyaw ua ke los ua ib qho qauv cohesive.

Lub siab kawg cov mis

Rau cov ntawv thov xav tau kev ua haujlwm siab dua, ib lub siab kawg graphite crucite crucible crucuent crucuent. Cov mis no muaj 98% graphite hais, 2% zirium oxide, 1% sodium salicate, thiab 1% cov tshuaj txhuas silicate. Cov khoom siv ntxiv no muab cov tsis sib xws rau kev kub thiab kub hnyiab thiab txhoj puab.

Cov txheej txheem tsim khoom

Kev npaj ntawm graphite sic crucailes cuam tshuam nrog cov txheej txheem tsis zoo. Thaum pib, flake graphite thiab silicon carbide tau sib xyaw kom huv si. Tom qab ntawd, cov khoom lag luam silicon hmoov, boron carbide hmoov, av nplaum, thiab cov thnondosetting phau ntawv yog ntxiv rau qhov sib xyaw. Kev sib tov yog ces nias rau hauv cov duab uas siv tshuab txias tshuab. Thaum kawg, tus txiv ntoo cruciles yog sintered nyob rau hauv lub tshuab cua sov siab los txhim kho lawv lub zog kho tshuab zog thiab thermal stability.

Cov ntawv thov thiab cov txiaj ntsig

Graphite sic crucibles yog dav siv hauv kev lag luam metallurgical rau melting thiab casting hlau, hlau, tooj, thiab txhuas. Lawv cov cua sov zoo tshaj ua kom muaj zog ua kom muaj cua sov thiab txo kev siv hluav taws xob. Lub siab thermal poob siab heev me ntsis kev pheej hmoo ntawm kev tawg thaum lub sij hawm nrawm hloov, thaum lawv cov tshuaj ruaj khov ua kom cov hlau molten.

Hauv kev xaus, daim ntawv qhia txog graphite silicate silicite sicicar crucai yog qhov sib npaug ntawm thermal conductivity, thermal poob siab kuj, thiab tshuaj lom neeg ruaj khov. Cov kab ntawv no ua rau lawv tsis tseem ceeb hauv thaj teb ntawm Metallurgy, uas lawv ua lub luag haujlwm tseem ceeb hauv kev ua tau zoo thiab txhim khu kev qha ntawm cov hlau.

Los ntawm kev nkag siab ntawm cov khoom siv thiab cov txheej txheem tsim ntawm graphite sic crucibles, kev lag luam tuaj yeem xaiv tau kev paub txog lawv cov ntawv thov tshwj xeeb thiab kev ua siab ntev ntawm lawv cov crucibles. Raws li thev naus laus zis ua kev sib tw, kev txhim kho ntxiv hauv daim ntawv qhia thiab tsim cov tswv yim ntawm graphite sic crucibles yuav tsum tau ua kom muaj txiaj ntsig zoo dua thiab muaj peev xwm siv mellurgical.