Cov khoom siv graphite tau siv dav

Graphite yog ib yam khoom siv tau ntau yam nrog ntau yam kev siv thiab qhov zoo, tshwj xeeb tshaj yog hauv kev tsim cov khoom siv refractory. Refractories yog qhov tseem ceeb hauv kev lag luam xws li kev ua hlau, qhov chaw uas lawv siv los ua kab hluav taws xob, crucibles thiab pwm, nrog rau kev tsim cov khoom siv tiv taus kub siab. Kev lag luam refractory tau dhau los ua qhov kev hloov pauv tseem ceeb hauv xyoo tas los no, suav nrog kev siv dav dav ntawm magnesia carbon cib thiab txhuas carbon cib, ob qho tib si muaj feem cuam tshuam nrog kev lag luam steelmaking.

Ib qho ntawm cov kev siv tseem ceeb ntawm graphite yog nyob rau hauv kev tsim cov khoom siv refractory. Graphite yog ib qho tseem ceeb hauv kev tsim cov cib refractory, crucibles, continuous casting hmoov, cores, pwm, detergents, cov ntaub ntawv tiv taus kub siab, thiab lwm yam. Cov ntaub ntawv no ua lub luag haujlwm tseem ceeb hauv ntau yam txheej txheem kev lag luam, tshwj xeeb tshaj yog nyob rau hauv kev lag luam steelmaking. Kwv yees li 10% ntawm lub ntiaj teb cov ntaub ntawv refractory yog siv los ntawm kev lag luam steelmaking, qhia txog qhov cuam tshuam tseem ceeb ntawm graphite refractories hauv kev lag luam no.

Kev siv cov cib magnesia carbon dav dav hauv cov ntaub thaiv qhov cub ua hlau yog ib qho kev hloov pauv tseem ceeb hauv kev lag luam refractory hauv xyoo tas los no. Muaj cov magnesium oxide thiab carbon sib xyaw ua ke, cov cib no muaj kev tiv taus cua sov zoo heev thiab ruaj khov heev, ua rau lawv zoo tagnrho rau kev siv cov ntaub thaiv qhov cub ua hlau. Tsis tas li ntawd, kev siv cov cib carbon txhuas hauv kev casting tas mus li kuj tau pom kev txhim kho tseem ceeb. Cov cib no muaj txhuas thiab carbon tau ua pov thawj tias muaj txiaj ntsig zoo hauv cov txheej txheem casting tas mus li, qhia ntxiv txog kev hloov pauv thiab kev hloov pauv ntawm cov ntaub ntawv graphite refractory.

Cov khoom siv graphite refractory muaj feem cuam tshuam nrog kev lag luam steelmaking, thiab lawv cov kev siv thiab cov txiaj ntsig pom tseeb hauv txhua yam ntawm kev tsim hlau. Lub peev xwm ntawm graphite los tiv taus qhov kub siab thiab cov xwm txheej hnyav ua rau nws yog cov khoom siv zoo tshaj plaws rau kev siv rau hauv cov cub tawg thiab lwm yam khoom siv steelmaking. Qhov ruaj khov thiab tiv taus cua sov ntawm graphite refractories pab txhim kho kev ua haujlwm zoo thiab kev ntseeg siab ntawm cov txheej txheem tsim hlau, thaum kawg cuam tshuam rau qhov zoo thiab kev sib xws ntawm cov khoom kawg.

Ntxiv rau nws siv rau hauv kev lag luam hlau, graphite muaj ntau qhov zoo ua cov khoom siv refractory. Ib qho ntawm nws cov txiaj ntsig tseem ceeb yog nws cov thermal conductivity siab, uas ua rau muaj kev hloov pauv cua sov thiab faib tawm hauv cov txheej txheem kev lag luam. Cov yam ntxwv no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas yuav tsum tau tswj qhov kub siab tas li, xws li hauv kev tsim cov hlau thiab lwm yam khoom siv kub siab.

Tsis tas li ntawd xwb, cov khoom siv graphite refractory muaj kev ruaj khov zoo heev, ua rau lawv tiv taus kev xeb thiab tshuaj lom neeg ntawm qhov kub siab. Hauv cov chaw uas muaj cov tshuaj lom neeg hnyav thiab cov hlau yaj ntau zaus, qhov no yog qhov tseem ceeb vim nws ua kom cov khoom siv refractory siv tau ntev thiab ntseeg tau.

Lwm qhov zoo ntawm cov khoom graphite yog lawv lub peev xwm los tiv taus kev kub ntxhov, qhov kev hloov pauv sai sai ntawm qhov kub uas tuaj yeem ua rau cov khoom tawg lossis ua tsis tiav. Lub peev xwm ntawm graphite los tiv taus kev kub ntxhov ua rau nws yog qhov kev xaiv txhim khu kev qha rau cov ntawv thov uas qhov kub hloov pauv sai, xws li hauv kev lag luam hlau thiab kev lag luam casting hlau.

Tsis tas li ntawd xwb, cov khoom siv graphite refractories paub txog lawv qhov porosity qis, uas pab ua kom lawv lub zog thiab muaj peev xwm tiv taus kev nkag los ntawm cov hlau molten thiab lwm yam khoom. Cov yam ntxwv no tseem ceeb heev rau cov ntawv thov uas qhov kev sib khi thiab kev rwb thaiv tsev yog qhov tseem ceeb, vim nws ua kom muaj kev ncaj ncees ntawm cov khoom siv refractory nyob rau hauv cov xwm txheej hnyav.

Cov khoom graphite muaj ntau yam siv tau hauv kev lag luam hlau. Cov khoom siv graphite refractories kuj siv tau rau ntau yam kev siv kub siab, suav nrog kev tsim cov khoom siv ceramics, iav thiab lwm yam khoom siv uas xav tau kev ruaj khov thermal thiab kev tiv taus rau cov xwm txheej hnyav.

Kev siv thiab qhov zoo ntawm cov khoom graphite hauv kev tsim cov khoom siv refractory yog qhov tseem ceeb thiab dav. Kev siv dav dav ntawm graphite hauv kev tsim cov cib refractory, crucibles, hmoov casting tas mus li, cores thiab cov khoom siv tiv taus kub siab qhia txog nws qhov tseem ceeb hauv ntau yam txheej txheem kev lag luam, tshwj xeeb tshaj yog hauv kev lag luam steelmaking. Cov kev txhim kho tshiab hauv kev lag luam refractory, xws li kev siv cov cib magnesia carbon thiab cov cib carbon txhuas, ntxiv qhia txog kev hloov pauv thiab kev ua haujlwm ntawm cov khoom siv graphite refractory. Nrog nws cov thermal conductivity siab, tshuaj lom neeg ruaj khov, thermal shock tsis kam thiab porosity qis, graphite tseem yog thawj qhov kev xaiv rau cov ntawv thov uas xav tau cov khoom siv refractory txhim khu kev qha thiab ruaj khov. Raws li kev lag luam txuas ntxiv mus hloov pauv thiab xav tau cov khoom siv ua tau zoo, cov khoom graphite yuav ua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li cov kev xav tau no thiab tsav tsheb kev tsim kho tshiab hauv cov khoom siv refractory.