1.4 Tej Sib Tsw Sib Tsoo
Cov tshuaj txhuam yog crushed, hauv av, thiab sieved rau hauv cov nplais ntawm kaum mus rau ntau pua ntawm cov micrometers loj ua ntej tau sib xyaw tusyees. Nws yog siv los ua cov khoom nias, hu ua cov hmoov nias. Cov cuab yeej siv rau theem nrab sib tsoo feem ntau siv ib ntsug ntawm cov menyuam ntsug los yog pob zeb.
1.5 Txoj Kev
Tsis zoo li dog dig extrusion thiab moulding,Isostatic nias Graphiteyog tsim siv khaub thuas isostatic nias tshuab (Daim Duab 2). Sau cov khoom siv raw rau hauv cov roj hmab pwm, thiab compact cov hmoov los ntawm high-figh hluav taws xob kev co. Tom qab sealing, nqus cov hmoov hmoov kom ua pa ntawm huab cua ntawm lawv. Tso nws nyob rau hauv lub siab-siab ntim cov kua tawm ua kua xws li roj lossis roj, nias nws mus rau 100-200mpa, thiab nias nws mus rau hauv cov khoom siv hluav taws xob cylindrical lossis duab dhos me.
Raws li lub hauv paus ntsiab lus pascal, siab yog siv rau cov roj hmab pwm los ntawm cov kua nruab nrab xws li dej, thiab lub siab yog sib npaug hauv txhua qhov kev qhia. Nyob rau hauv txoj kev no, cov hmoov xau tsis yog taw qhia nyob rau hauv kev sau ua ke hauv pwm, tab sis yog compressed nyob rau hauv ib qho kev npaj tsis xwm yeem. Yog li ntawd, txawm hais tias graphite yog aniototropic hauv crystallogrographic cov khoom, tag nrho, cov iSoster nias graphite yog isotropic. Cov khoom tsim tsim tsis tsuas yog muaj cov ntawv sib dhos thiab duab plaub hau, tab sis kuj thooj li cylindrical thiab cov ntoo uas muag muag.
Lub asostatic nias tshuab yog tsuas yog siv nyob rau hauv cov hmoov metallurgy kev lag luam. Vim tias qhov kev thov ntawm kev lag luam siab ntev xws li kev lag luam siab, kev ua haujlwm nyuaj, thiab nws muaj qhov siab ntawm 5000mm, thiab qhov siab tshaj plaws ua haujlwm ntawm 600MPA. Tam sim no, qhov siab tshaj plaws ntawm kev txias heev iostatic nias tshuab Siv rau hauv cov pa roj carbon monoxent yog φ 2150mm, nrog qhov siab tshaj plaws ua haujlwm ntawm 180MPA.
1.6 ci
Thaum lub sijhawm ua cov txheej txheem ci, ib qho kev tiv thaiv cov tshuaj nyuaj tshwm sim ntawm cov lus sib sau ua ke thiab cov phau ntawv ua kom muaj teeb meem loj thiab tso tawm cov tshuaj tiv thaiv kev ua kom hws. Nyob rau hauv qis-kub preheating theem, cov khoom lag luam nthuav tawm vim muaj cua sov, thiab hauv cov txheej txheem cua sov tom ntej, lub ntim shrints vim cov tshuaj tiv thaiv hws.
Qhov loj dua qhov loj ntawm cov khoom nyoos ntawm cov khoom nyoos, thiab cov khoom siv hluav taws xob sib txawv thiab sab hauv, uas tuaj yeem ua rau tawg rau hauv cov khoom nyoos.
Vim nws cov qauv zoo, iSostical nias graphite yuav tsum muaj kev sib xyaw tshwj xeeb, tshwj xeeb tshaj yog thaum lub rooj sov sov uas asphalt volatiles tau tso tawm sai sai. Cov txheej txheem cua sov yuav tsum tau nqa tawm nrog kev ceev faj, nrog cov cua kub tsis tshaj 1 ℃ / h thiab qhov sib txawv kub nyob rau hauv qhov cub tshaj 20 ℃. Txoj kev no yuav siv sijhawm li 1-2 hlis.
1.7 impregnation
Thaum ci, cov teeb meem uas tsis muaj ntxhiab ntawm cov thee sar pitch yog tso tawm. Cov hws nyob sab hauv cov khoom thaum lub sijhawm roj tawm thiab ntim cov khoom sib xyaw, yuav luag txhua yam uas qhib pores.
Txhawm rau txhim kho lub ntim ntom ntom, lub zog siv, thermal imporivity txoj kev siv tau, thiab cov tshuaj lom neeg impralic thee rau sab hauv ntawm cov khoom lag luam los ntawm cov khoom qhib.
Cov khoom yuav tsum tau ua ntej ua ntej, thiab tom qab ntawd nqus thiab degassed hauv lub tshuab impregnation. Tom qab ntawd, cov melted thee tarphalt yog ntxiv rau impregnation tank thiab nias kom tso cai rau kev hais tawm ntawm kev ua raws sab hauv ntawm cov khoom lag luam sab hauv. Feem ntau, isostatic nias graphite undergoes ntau lub voj voog ntawm impregnation qheb.
1.8 Graphitization
Ua kom sov cov khoom calcined rau kwv yees li 3000 ℃, npaj lub ntxaij atracts hauv cov pa roj carbon rau graphite, uas yog hu ua graphitization.
Cov txheej txheem graphitization suav nrog Acheson txujci, sab hauv cov txheej txheem thermal thermal, thiab cov khoom lag luam zoo li niaj zaus yuav siv sijhawm li 1-1.5 rau cov khoom lag luam kom raug thauj khoom thiab tso tawm los ntawm qhov cub tawg. Txhua qhov cub tuaj yeem ua rau muaj ntau tons mus kaum deszens ntawm tons ntawm cov khoom ci.
Lub sijhawm Post: Sep-29-2023