Indlela yokuvelisa i-graphite yokufudumeza intonga kwi-vacuum furnace

Indlela yokuvelisa i-graphite yokufudumeza intonga kwi-vacuum furnace

Isithando somlilointonga yegraphiteikwabizwa ngokuba yivacuum furnace graphite heat rod. Ngemihla yamandulo, abantu bajika igraphite ibe yikhabhoni, ngoko ibizwa njalointonga yekhabhoni. Izinto ezikrwada ze-graphite carbon rod yigraphite, ebizwa ngokuba yi-adhesive molding. Ingenziwa kwimveliso yegraphite yeemilo ezahlukeneyo, kubandakanywa intonga ejikelezayo yegraphite. Ngenxa yeempawu zegraphite, ineempawu ezilungileyo ezizodwa ezifanaconductivity, ukuthambisa, ukumelana nobushushu obuphezulukwaye nangokunjalo. Ke ngoko, intonga yekhabhoni yegraphite nayo inayoconductivity ebalaseleyo, ukuqhuba kobushushu, ukuthambisa,ukumelana nobushushu obuphezulukunye nezinye iipropati. Imeko yexesha elizayo kukuba iipropathi zegraphite azitshintshwa. Ngoko ke, ukuveliswa kunye nokunikezelwa kweentonga zegraphite zihluke, kwaye iimpawu ezisebenzayo zeegrafiti eziveliswayo ziya kuba zihluke. Ngoko njani ukwahlula? Iimveliso zegraphite ezenziwe ngokuthe ngqo zenziwe nge-graphite powder kunye ne-adhesive, okanye zenziwe kuqala zibe zixhobo ezinkulu zesikwere, ezicutshungulwa ngumatshini ngokomzobo okanye kwimilo yemveliso.
Kukho umahluko omkhulu kunye neempawu phakathi kwentonga engqukuva yegraphite eyenziwe yindlela yokuqala kunye nentonga engqukuva yegraphite eyenziwe yindlela yesibini. Ngenxa yoxinzelelo olungonelanga ngexesha lokukhupha, iintonga yegraphite ekhutshiweyonge-graphite powder kunye ne-adhesive iya kuba yinto ethambileyo kakhulu, kunye noxinzelelo olubi kunye noxinzelelo olukhulu lomoya (iipores ezinkulu). Uthuli luya kuwa kwimeko yendalo, kwaye luya kusasazeka xa luxutywe ngotywala. Ngelo xesha, ngenxa yesixa esikhulu sokubambelela, ukuqhuba, ukuqhuba ukushisa kunye nokuthambisa intonga yegraphite kuya kuncitshiswa kakhulu, Isizathu silula kakhulu. Igraphite yimathiriyeli eqhubayo kwaye incamathela yiizinto zokugquma, ebophelelwe kakhulu ukunciphisa i-conductivity yentonga yegraphite. Igama eliqhelekileyo lale graphite carbon rod yicarbon arc air gouging carbon rod. Isetyenziselwa ukusika kwi-Foundry. Umphezulu kufuneka ugalelwe umaleko wobhedu ukukhusela ukufuma kunye nokuqhuba umbane. Ngoko ke, olu hlobo lwe-carbon rod lunayo into yokuba i-diameter iya kuba ngaphantsi kwe-0.1-0.2mm iphawulwe, kuba umphezulu uya kufikelela nje kwi-diameter ephawulweyo xa ifakwe nge-10% yesinyithi.
Nangona indlela yesibini nayo yenziwe nge-graphite powder kunye ne-adhesive, kugxininiswa kakhulu kwinkqubo yayo. Okokuqala, i-graphite powder kunye ne-adhesive zisetyenziselwa ukwenza ezinkuluizixhobo zegraphitephantsi koxinzelelo oluphezulu, kwaye emva kokoumithiswengokutshisa okunobushushu obuphezulu (i-evaporation kunye ne-volatilization of adhesive). Ngale ndlela, phantse akukho nto incamathelayo kwigraphite emva kokuqholwa ngokuphindaphindiweyo. Le nkqubo yokuqhola ingundoqo kakhulu. I-graphite encitshisiweyo emva kokugxunyekwa kwe-impregnation ineempawu zegraphite ngokwayo kwaye inayo yonke imisebenzi kunye neempawu zegraphite. Ngenxa yokuba igraphite inobunyulu obuphezulu, ikwabizwa ngokubaigraphite ecocekileyo, kwaye intonga yegraphite eyenziweyo ikwabizwa ngokuba yi-high-purity graphite rod.