Cov txheej txheem los tsim cov graphite electrodes

Cov txheej txheem los tsim cov duab impregnated
Kev Impregnation yog ib theem xaiv tau ua kom txhim kho cov khoom ntawm cov khoom kawg. Tars, Pitches, resins, molten hlau thiab lwm yam reagents tuaj yeem ntxiv rau cov duab ci (hauv cov ntawv thov tshwj xeeb graphite duab kuj tuaj yeem impregnated) thiab lwm yam reagents siv los sau cov voids tsim nyob rau hauv cov khoom siv carbonised. Soaking nrog kub thee tar pitch nrog lossis tsis muaj lub tshuab nqus tsev thiab autoclaving siv. Ntau yam impregnating txheej txheem siv nyob ntawm cov khoom xws li tab sis batch lossis quasi-continuous ua haujlwm siv. Lub voj voog impregnation feem ntau cuam tshuam nrog preheating cov duab, impregnation thiab txias. Lub reactor hardening kuj tseem siv tau. Electrodes uas yuav tsum tau impregnated tuaj yeem preheated los ntawm cov cua sov pov tseg ntawm lub thermal oxidiser. Tsuas yog cov pa roj carbon tshwj xeeb yog impregnated nrog ntau yam hlau. Cov khoom ci lossis graphitised yuav raug impregnated nrog lwm yam khoom, piv txwv li resins lossis hlau. Impregnation yog nqa tawm los ntawm kev soaking, qee zaum nyob rau hauv lub tshuab nqus tsev thiab qee zaum nyob rau hauv siab, autoclaves siv. Cov khoom uas tau muab cov thee tar pitch tso rau hauv los yog sib txuas ua ke lawm ces yuav rov ci dua. Yog tias siv cov resin bonding lawm, ces yuav kho tau.

Cov txheej txheem los tsim cov duab rov ua dua los ntawm cov duab impregnated
Kev ci thiab rov ci dua Kev ci dua tsuas yog siv rau cov duab uas tau muab tso rau hauv dej xwb. Cov duab ntsuab (lossis cov duab uas tau muab tso rau hauv dej) raug rov ci dua ntawm qhov kub txog li 1300 ° C siv ntau yam cub tawg xws li qhov av, ib chav, ntau chav, annular thiab thawb pas nrig cub tawg nyob ntawm qhov loj thiab qhov nyuaj ntawm cov khoom. Kev ci tas mus li kuj raug ua tiav. Cov haujlwm ntawm lub cub tawg zoo ib yam li cov uas siv rau cov txheej txheem ci cov duab electrode, tab sis
cov cub tawg feem ntau me dua.