Cov hniav nyiaj hniav kub Smelting Graphite Crucible

Cov hniav nyiaj hniav kub smelting graphite crucible yog ib qho kev xaiv tsis tseem ceeb hauv cov hniav nyiaj hniav kub yaj txheej txheem.
Hauv kev ua kom zoo nkauj thiab kev tshaj lij ntawm kev ua cov hniav nyiaj hniav kub, melting yog thawj kauj ruam hauv kev tsim tus ntsuj plig ntawm cov hlau. Graphite crucibles, raws li tus neeg nqa khoom tseem ceeb hauv cov txheej txheem no, nteg lub hauv paus ruaj khov rau kev tsim cov khoom zoo siab - cov hniav nyiaj hniav kub zoo nrog lawv cov khoom tsis sib xws ntawm lub cev thiab tshuaj lom neeg. Lawv qhov kev ua tau zoo tshaj plaws ua rau lawv nyiam lub thawv melting, los ntawm cov tsoos goldsmith rhiav mus rau niaj hnub precision rhiav.

Graphite crucibles muaj siab heev -kub tsis kam thiab thermal stability zoo heev, kom ntseeg tau meej thiab tswj tau cov txheej txheem melting.
Cov hniav nyiaj hniav kub melting, tshwj xeeb tshaj yog melting ntawm precious hlau xws li kub, platinum, K-kub, thiab nyiaj, yuav tsum tau kub tshaj ib txhiab degrees Celsius. Graphite crucibles muaj siab heev refractoriness, yooj yim withstanding huab cua kub ntawm 1600℃los yog siab dua, ua kom tiav hlau melting tsis crucible softening los yog deformation. Qhov tseem ceeb tshaj, lawv cov thermal conductivity zoo heev thiab tsis tshua muaj thermal expansion coefficient xyuas kom meej tias lub crucible tsis tawg yooj yim nyob rau hauv ceev ceev cua sov thiab txias ib puag ncig, kom ntseeg tau tias cov cua sov zoo, yog li ua rau ib tug uniform hlau kua muaj pes tsawg leeg, txo oxidation thiab hlawv poob, thiab precisely tswj qhov zoo ntawm cov hlau nyob rau hauv txhua txoj kev melting.

Graphite crucibles nthuav tawm cov tshuaj zoo heev inertness thiab corrosion kuj, ua kom cov purity ntawm cov hlau.
Lub purity ntawm precious hlau yog ib qho tseem ceeb ntsuas ntawm cov hniav nyiaj hniav kub tus nqi. Cov khoom siv graphite nws tus kheej muaj cov tshuaj lom neeg ruaj khov zoo heev, muaj zog tiv thaiv corrosion thiab ntub dej los ntawm feem ntau cov hlau molten thiab alloys. Qhov no txhais tau hais tias nyob rau hauv qhov kub thiab txias, cov khoom siv crucible tsis tshua muaj tshwm sim nrog cov hlau molten, zoo tiv thaiv kev taw qhia ntawm impurities thiab ua kom muaj txiaj ntsig zoo tshaj plaws ntawm cov khoom qub purity thiab fineness ntawm cov hlau muaj nuj nqis, muab cov ntaub ntawv purest rau cov txheej txheem casting thiab forging.

Piv nrog rau lwm cov ntaub ntawv, graphite crucibles qhia pom qhov zoo.
Keeb kwm, av nplaum los yog quartz crucibles kuj tau siv, tab sis lawv feem ntau raug kev txom nyem los ntawm cov thermal shock stability, susceptibility rau cracking, tsis sib xws thaum tshav kub kub hloov, los yog reactivity nrog tej yam hlau molten. Graphite crucibles ua tiav zoo dua cov kev xaiv no, muab cov kev daws teeb meem zoo dua thiab muaj txiaj ntsig, sawv cev rau kev hloov kho tshiab hauv cov txheej txheem tsim khoom niaj hnub.

PACKAGE:
Veneer rooj plaub lossis rooj ntoo lossis raws li cov neeg siv khoom xav tau.

LUB SIJ HAWM:
3-20 hnub tom qab lees paub qhov kev txiav txim, nthuav dav hnub xa khoom yuav tsum tau txiav txim siab raws li
ntau lawm lub caij thiab txiav txim kom muaj nuj nqis.

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