Cov yam ntxwv tseem ceeb yog flake graphite:
1. Lub melting point ntawm kub resistant graphite yog 3850 degree ± 50 degree, thiab lub boiling point yog 4250 degree. Txawm hais tias nws raug hlawv los ntawm ultra-siab arc, qhov poob ntawm qhov hnyav yog me me, thiab cov coefficient ntawm linear expansion kuj tsawg heev. Lub zog ntawm graphite nce nrog qhov nce ntawm qhov kub thiab txias. Thaum 2000 degree, lub zog ntawm graphite doubles
2. Hluav taws xob thiab thermal conductivity. Lub thermal conductivity ntawm graphite yog ob zaug siab dua li ntawm cov ntxhia uas tsis yog xim hlau. Cov thermal conductivity tshaj cov khoom siv hlau xws li hlau, hlau, thiab txhuas. Thermal conductivity txo nrog qhov kub thiab txias, thiab txawm tias kub heev, graphite ua raws li thermal insulator.
3. Lubricity. Lubricity ntawm graphite nyob ntawm qhov loj ntawm graphite flakes. Qhov loj ntawm cov flakes, qhov me me ntawm kev sib txhuam coefficient thiab qhov zoo ntawm lubricating kev ua tau zoo.
4. Tshuaj lom neeg ruaj khov, graphite muaj tshuaj lom neeg ruaj khov ntawm chav tsev kub, zoo tiv thaiv acid & alkali tsis kam, corrosion kuj ntawm cov kuab tshuaj organic thiab lwm yam.
5. Plasticity. Graphite muaj zog tensile zoo thiab tuaj yeem dov rau hauv cov ntawv nyias nyias.
6. Thermal shock resistance. Thaum siv qhov kub thiab txias, graphite tuaj yeem tiv taus qhov kub thiab txias tsis muaj kev puas tsuaj. Thaum qhov kub hloov pauv tam sim ntawd, qhov ntim ntawm graphite hloov me ntsis, yog li tsis muaj kab nrib pleb.
Tus neeg sawv cev khi txuas cov matrix thiab cov khoom. Nyob rau hauv qhov tseeb ntau lawm thiab daim ntawv thov txheej txheem, lub matrix thiab binding tus neeg sawv cev system yog ob yam tsis muaj zog ntawm magnesia-carbon bricks.
Thov kom khi tus neeg sawv cev ntawm magnesia carbon cib suav nrog:
1. Muaj qee yam viscosity thiab fluidity nyob rau hauv chav tsev kub, thiab muaj zoo wettability rau magnesia thiab graphite
2. Nyob rau hauv cov txheej txheem ntawm kev kho cua sov, lub binder tuaj yeem ntxiv condensed, kom cov khoom muaj zog dua
3. Thaum lub sij hawm kho cua sov txheej txheem, lub binder yuav tsis ua rau ntau expansion thiab contraction ntawm cov khoom kom tsis txhob tawg ntawm cov khoom.
4. Cov ntsiab lus C yuav tsum siab, thiab cov pa roj carbon polymer tom qab kev kho coking muaj qhov kub thiab txias zog
