Lub voj voog ntawm graphite hluav taws xob siv sijhawm ntev npaum li cas?

Dab tsi yog qhov cuam tshuam ntawm hluav taws xob tiv taus kev ua tau zoo ntawm kev siv cov electrodes hauv steelmaking?
Qhov tsis kam ntawm graphite electrodes yog qhov ntsuas lub cev uas qhia txog kev ua haujlwm ntawm cov chaw tsim hluav taws xob, uas cuam tshuam nrog kev tsim khoom ntawm electrode. Lub teb chaws muaj cov kev cai tsim nyog ntawm kev tiv thaiv ntawm graphite hluav taws xob ntawm cov sib txawv tshwj xeeb thiab ntau yam. Feem ntau hais lus, thaum xaiv cov hluav taws xob ntawm qee qhov tshwj xeeb, cov hlau mills yuav tsum xaiv nyob rau hauv cov qauv cuam tshuam los ntawm National Metallurgical. Ntau dhau resistivity yuav ua rau electrode tig liab thiab ua kom sov thaum energized, nce kev noj ntawm electrode oxidation.
Dab tsi yog qhov cuam tshuam ntawm bulk ntom ntom ua haujlwm ntawm kev siv hluav taws xob hauv steelmaking?
Qhov kev ceev ceev ntawm graphite cov hluav taws xob cuam tshuam txog lub xeev tuab ntawm cov electrodes thiab yog ze ze rau kev tsim khoom ntawm cov electrodes. Lub teb chaws muaj cov txiaj ntsig tshwj xeeb rau cov tuab ceev ntawm graphite electrodes ntawm cov kev sib txawv thiab ntau yam. Cov khoom lag luam uas muaj cov tuab tuab uas pom tias cov qauv porosity tag nrho ntawm cov khoom lag luam yog qhov kub thiab cov tshuaj oxidation Feem ntau hais lus, thaum hlau mills xaiv cov hluav taws xob ceev, nws yog qhov zoo dua rau qhov ntom ntawm electrode ntawm cov nqi tshwj xeeb, tab sis ntau dua qhov ntom ntom, zoo dua. Vim tias qee cov hluav taws xob nrog cov ntom ntom ntom ntom tej zaum qee qhov tsis zoo thermal poob siab thiab muaj kev tawg thaum lub sij hawm statmaking, uas tuaj yeem cuam tshuam statmaking.
Vim li cas yuav tsum cov mills steel tiv thaiv kev sib xyaw ntawm cov khoom lag luam ntau thaum siv hluav taws xob graphite?
Cov graphite hluav taws xob siv los ntawm cov hlau mills feem ntau muab los ntawm ntau cov tuam txhab tsim khoom, thiab ntau cov khoom tau sib xyaw thaum lub sij hawm steelmaking. Qhov no tsis yog ua rau nws nyuaj rau cov hlau mills los suav cov khoom noj thiab cov tshuaj sib txawv thiab cov txheej txheem sib txawv vim yog cov txheej txheem sib txawv uas siv los ntawm txhua lub chaw tsim khoom. Yog li ntawd, kev ua kom haum siab thiab lwm yam uas yuav tshwm sim thaum sib xyaw ua ke tuaj yeem ua rau elecet detachment thiab tawg. Txoj kev raug siv yog siv cov khoom lag luam los ntawm ib qho chaw tsim khoom ib leeg thiab tom qab ntawd txuas rau lwm cov chaw tsim khoom lag luam. Nws yog qhov tsim nyog los txo cov naj npawb ntawm cov hloov hluav taws xob los ntawm cov chaw tsim khoom sib txawv thiab siv cov txuas txuas uas tau sib xyaw nrog cov khoom lag luam kom tiv thaiv kev sib xyaw.
Dab tsi yog cov yam ntxwv ntawm koob coke?
Koob coke yog cov khoom lag luam zoo carbon raw, muab faib ua thee series thiab roj series. Nws cov nplaim tau pom tseeb sawb sawb-puab cov qauv, thiab feem ntau ntawm lawv yog ntev koob ua cov tawg thaum tawg. Hauv lub tshuab tsom, cov qauv kev sib tw tuaj yeem pom, yog li nws hu ua koob Coke. Koob coke yog nquag mus rau graphitization ntawm qhov kub siab dua 2000 degrees. Daim duab graphite electrodes ua los ntawm nws tsis tsuas yog muaj qhov tsis txaus ntseeg, tab sis kuj tseem muaj cov khoom siv hluav taws xob tsis muaj zog rau kev tsim cov ultra-siab fais fab hluav taws xob thiab high-fais fab electrodes. Tus nqi ntawm Koob Coke yog ntau dua li ntawm Coke dog dig, tam sim no txog {{5} {zaus siab dua.
Cov hmoov av sau cov plua plav rau ntawm cov hluav taws xob arc muaj qhov cuam tshuam rau kev noj ntawm cov hluav taws xob?
Tus kiv cua siv nyob rau hauv lub tshuab nqus tsev ua rau muaj qee qhov kev tsis zoo thaum lub sijhawm steel flow hauv lub sijhawm Thaum steelmaking steel, ib qho kev tswj hwm lub tsev nqus dej tsis yog tswj kev ua haujlwm zoo tab sis kuj tseem tso tseg kev noj ntawm electrode.
Yuav ua li cas kom zam dhau kev nce electrode kev noj thaum steelmaking?
Txhawm rau zam kev nce hauv cov electrode kev noj thaum lub xeev steelmaking, nws yog qhov tsim nyog siv hluav taws xob tam sim no siv ntau yam uas yuav tsum muaj ntawm cov hluav taws xob hluav taws xob. (2) Tiv thaiv kev arc pib los ntawm nkag mus hauv cov pas dej Molten. (3) tiv thaiv kev raus dej ntawm cov electrodes rau hauv Molten Steel txhawm rau txhawm rau ua kom muaj pa hluav taws xob. (4) Yog tias cov neeg mob tso cai, cov hluav taws xob hauv hluav taws xob ua tshuaj lom cua txias thev naus laus zis. (5) teeb tsa qhov kev tso pa tawm kom raug. (6) txais yuav cov pa oxygen kom raug.
Lub voj voog ntawm graphite hluav taws xob siv sijhawm ntev npaum li cas?
Cov txheej txheem ntau lawm thiab cov sijhawm ua rau ib pob ntawm ultra-siab fais fab hluav taws xob muaj raws li hauv qab no: electrode nias (3 hnub) - immersion (4 hnub) - Gracitizitization (10 hnub) - Machining thiab Kev Soj Ntsuam Zoo (2 hnub) - tiav cov khoom ntim khoom thiab xa khoom (1 hnub). Kev voj voog nrawm tshaj plaws uas tsis muaj kev cuam tshuam los ntawm kev pub mis rau cov khoom lag luam electrode rau cov khoom lag luam electrode
Cov yam ntxwv ntawm cov hluav taws xob tsim tawm los ntawm cov duab txuas cov tshuab hluav taws xob?
Txoj kev qhia kev txhim kho ntawm cov cub tawg yog lub tshav kub sab hauv tshav kub graphitization rauv. Vim yog tib lub ntom ntom tam sim no ntawm cov kab ntawv sib txuas, qhov sib txawv hauv electrode refreativity yog me me; Thib ob, hluav taws xob tiv thaiv ntawm ob xaus ntawm cov khoom sib txuas nrog hauv nruab nrab yog qis dua qhov ntawd yog qhov nce siab dua li qhov ntawd), uas tau txais txiaj ntsig zoo rau kev txo cov Kev tawm tsam ntawm qhov kev sib txuas lus thaum siv cov neeg siv thiab kev txo qis ntawm kev sib txuas ntawm kev sib txuas ntawm kev sib txuas lus sib txuas. Yog li no, cov electrode zoo uniformity tsim los ntawm cov series series graphitization rawg yog qhov zoo dua li ntawm cov khoom siv ua kom zoo nkauj ntawm hluav taws xob tshuab hluav taws xob.
Vim li cas qhov zoo ntawm electrode pob qij txha ua lub luag haujlwm tseem ceeb hauv hluav taws xob arc rauv steelmaking?
Cov koom tes ua si lub luag haujlwm tseem ceeb hauv electrode steelmaking, thiab qhov zoo ntawm cov sib txuam nrog kev siv hluav taws xob hauv hluav taws xob fais statmaking. Txawm li cas los xij electrode zoo yog, yog tias tsis muaj kev sib koom ua ke zoo kom phim nws kom yog, teeb meem kuj tseem yuav tshwm sim thaum muaj steelmaking steelmaking. Raws li cov ntaub ntawv cuam tshuam, ntau dua 80% ntawm elecage siv tawg hauv hluav taws xob rurveter steelmaking yog tshwm sim los ntawm cov pob qij txha thiab loosening. Yog li ntawd, xaiv cov khoom lag luam zoo electrode cov pob qij txha yog qhov lav rau kev siv hluav taws xob ib txwm hauv hluav taws xob fais fab.
Dab tsi qhia qhov ntsuas tau zoo ntawm graphite electrode (sib koom tes) cov khoom muaj feem cuam tshuam rau hluav taws xob tshuab hluav taws kub?
(1) Qhov ntsuas zoo xws li kev ceev ceev, tiv taus, lub zog, modastic modulus, thiab thermal nthuav tawm coeffodes. (2) Qhov ntsuas tau zoo xws li kev ceev ceev, tiv taus, lub zog, modastic modulus, thiab thermal expansion coefficiention ntawm kev sib koom ua ke. (3) lub machining qhov tseeb ntawm cov electrodes thiab pob qij txha, tsis muaj qhov yooj yim ntawm cov electrodes thiab pob qij txha), siv cov nyhuv tsis zoo. (4) Cov txheej txheem sab hauv zoo ua tau zoo ntawm cov hluav taws xob thiab cov pob qij txha yuav tsum tsis muaj cov kab nrib pleb uas yuav ua rau muaj kev phom sij thaum siv thaum siv sijhawm.
Dab tsi yog qhov yuav tshwm ntawm oxidation oxidation ntawm cov hluav taws xob xaus ntsej muag nyob rau sab saud ntawm lub electrode?
Thaum lub sij hawm steelmaking nyob rau hauv smelting rauv, seem steel raug hlawv sab hauv lub cub tawg. Nyob rau tib lub sijhawm, vim muaj cov pa roj oxygen hauv cov nplaim hluav taws xob, qhov siab ntawm lub pob hluav taws xob yog ntau dua ntawm cov khawm hluav taws xob yog ntau dua ntawm cov txhab, uas tuaj yeem yooj yim oxidize lub ntsej muag kawg. Yog tias oxidation yog hnyav, nws tuaj yeem ua rau hluav taws xob tas nrho ntsej muag rau deform los ntawm ib qho chaw tiaj tiaj mus rau ib qho chaw tiaj tiaj. Thaum cov hluav taws xob tshiab txuas nrog rau sab saud, cov oxidation deformation, thiab electrode sib txawv yog qhov loj me, uas yooj yim ua rau oxidation thiab tawg ntawm sab hauv sib koom tes. Qhov kev tiv thaiv zoo tshaj plaws yam tsis tau hloov cov kev hloov pauv me me ntawm lub electrode kawg ntawm lub classive ntawm lub closeard los thaiv hluav taws xob thiab tiv thaiv hluav taws xob tas.