Av nplaum cruciblesyog ib hom high -kub refractory ceramic thawv siv nyob rau hauv cov txheej txheem tshuaj tua hluav taws. Lawv lub luag haujlwm tseem ceeb yog kev sib cais, sib sau, thiab kev txiav txim siab ntawm cov hlau muaj txiaj ntsig (kub, nyiaj, platinum, thiab lwm yam) thaum lub sijhawm siab - cov txheej txheem kub xws li melting, oxidation, thiab txo. Hom crucible no nthuav tawm cov khoom zoo heev refractory, thermal poob siab tsis kam, thiab tshuaj lom neeg ruaj khov, tswj kev ncaj ncees nyob rau hauv ntau yam thermal cycling.
1. Technical Parameters ntawmAv nplaum Crucibles
|
SiO2,% |
60-65 |
|
MgO,% |
＜0.2 |
|
CaO, % |
＜0.6 |
|
Al2O3,% |
30-40 |
|
Fe 2O3,% |
＜2 |
|
TiO 2,% |
＜2 |
|
Na2O,% |
＜0.1 |
|
K2O, % |
＜0.5 |
|
Qhov ceev, g / cm3 |
＞2 |
|
Txias Crushing zog, MPa |
＞20 |
2. Cov khoom piav qhia
Thawj raw cov ntaub ntawv rauav nplaum cruciblesyog siab -alumina cov ntaub ntawv thiab cov av nplaum refractory, nrog rau qhov sib ntxiv ntawm qhov tsim nyog ntawm quartz thiab feldspar li fluxes. Cov no yog sintered ntawm qhov kub thiab txias los tsim cov qauv ntom ntom ceramic. Kev khiav hauj lwm kub yog 1150℃txog 1300 degree. Hauv kev ntsuas kub thiab nyiaj thiab kev txiav txim siab, cov khoom tuaj yeem siv tau ntev -lub sij hawm ntawm 1200℃thiab tiv taus thermal shocks los ntawm cua kub ceev.
Cov noav nplaum cruciblestswj kev ruaj ntseg zoo txawm tias nyob rau hauv qhov kub thiab txias thiab muaj zog oxidizing fluxes (xws li borax, soda tshauv, lead oxide, thiab lwm yam). Lawv kuj ua kom pom kev ruaj ntseg hauv kev tswj cov duab thiab lub zog txhua yam ntawm qhov kub thiab txias, hloov mus rau cov txheej txheem ntau zaus ntawm kev them nqi, cua sov, thiab tawm. Lawv cov coefficient qis ntawm thermal expansion pab txo qis deformation lossis tawg, thaum lub porosity nruab nrab pab txhawb kev nkag mus thiab cov tshuaj tiv thaiv.
Av nplaum crucibles feem ntau yog siv rau kev tsom xam thiab kev txiav txim siab ntawm cov hlau muaj txiaj ntsig, nrog rau cov txheej txheem xws li oxidizing smelting, nqus, thiab sib cais.
3. Cov yam ntxwv tseem ceeb
Kev ruaj ntseg tshuaj zoo: Resistant corrosion los ntawm fluxes xws li borates, carbonates, thiab lead oxide.
Muaj zog thermal shock tsis kam: Haum rau cov txheej txheem ntau zaus ntawm kev them nyiaj, cua sov, thiab tawm.
High -kub tsis kam thiab kev ua haujlwm ruaj khov: Khaws cov duab thiab lub zog ruaj khov ntawm qhov kub thiab txias.
Tsawg coefficient ntawm thermal expansion: Zoo txo cov℃ntawm deformation los yog tawg.
4. Cov ntawv thov tseem ceeb
Av nplaum cruciblesFeem ntau yog siv rau kev tsom xam, kev txiav txim siab, thiab kev sib cais ntawm cov hlau muaj txiaj ntsig.
5. Ceev faj
Ua kom qis -kub preheating ua ntej siv los txo thermal shock.
Cov cua kub thaum siv yuav tsum qeeb; zam kev kub ceev ceev ceev.
Tso cai rau lub ntuj txias tom qab siv los tiv thaiv kev tawg vim yog cua txias sai.
Koj puas xav nrhiav tus kws tshaj lij ntawm cov khoom siv refractory?
Koj puas xav nrhiav tus neeg muag khoom ruaj khov thiab ntseeg tau?
Tom qab ntawd thov hu rau peb.
Hu rau kuv:
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