I-Isostatic icinezela igraphiteluhlobo olutsha lwemathiriyeli yegraphite eyaphuhliswa ngeminyaka yee-1960, enothotho lweempawu ezibalaseleyo.Umzekelo, i-isostatic yokucinezela igraphite inokumelana nobushushu.Kwi-atmosfera engasebenziyo, amandla ayo omatshini awehli nje ngokunyuka kwamaqondo obushushu, kodwa ayanyuka, afikelele kwixabiso lawo eliphezulu malunga ne-2500 ℃;Xa kuthelekiswa negraphite eqhelekileyo, isakhiwo sayo silungile kwaye sixinene, kwaye ukufana kwayo kulungile;I-coefficient yokwandiswa kwe-thermal iphantsi kakhulu kwaye inokumelana nokutshatyalaliswa kwe-thermal;Isotropic;Ukuxhathisa okuqinileyo kweekhemikhali, ukuqhutyelwa kakuhle kwe-thermal kunye nombane;Inomsebenzi obalaseleyo wokulungisa oomatshini.
Kungenxa yentsebenzo yayo egqwesileyo ukuba i-isostatic pressing graphite isetyenziswe ngokubanzi kwimimandla efana nesinyithi, ikhemistri, umbane, i-aerospace, kunye neshishini lamandla e-atom.Ngaphezu koko, ngophuhliso lwesayensi kunye nethekhnoloji, iindawo zesicelo zihlala zisanda.
Inkqubo yokuveliswa kwegraphite ye-isostatic
Inkqubo yokuvelisa i-isostatic pressing graphite iboniswe kuMfanekiso 1. Kucacile ukuba inkqubo yokuvelisa i-isostatic pressing graphite yahlukile kwi-electrode yegraphite.
I-Isostatic pressing graphite ifuna imathiriyeli ekrwada ye-isotropic ngokwesakhiwo, ekufuneka icolwe ibe ngumgubo ocolekileyo.Itekhnoloji yokwenza itekhnoloji yokucofa i-isostatic ebandayo kufuneka isetyenziswe, kwaye umjikelo wokuqhotsa ude kakhulu.Ukuze kuphunyezwe ukuxinana okujoliswe kuko, kufuneka imijikelo yokuqhotsa i-multiple impregnation, kwaye umjikelo wegraphitization mude kakhulu kunolo wegraphite eqhelekileyo.
Enye indlela yokuvelisa i-isostatic ecinezela igraphite kukusebenzisa i-mesophase carbon microspheres njengemathiriyeli ekrwada.Okokuqala, i-mesophase carbon microspheres iphantsi konyango lokuzinzisa i-oxidation kumaqondo obushushu aphezulu, ilandelwa yi-isostatic pressing, ilandelwa ngokubala okuqhubekayo kunye ne-graphitization.Le ndlela ayiziswanga kweli nqaku.
1.1 Iimathiriyeli ekrwada
The imathiriyeli ekrwada ukuvelisa isostatic pressing graphite ziquka aggregates kunye nezibophelelo.Ii-aggregates zenziwa kwi-petroleum coke kunye ne-asphalt coke, kunye ne-asphalt coke yomhlaba.Ngokomzekelo, i-AXF i-isostatic graphite eveliswa yi-POCO e-United States yenziwe kwi-asphalt yomhlaba i-coke Gilsontecoke.
Ukuze ulungelelanise ukusebenza kwemveliso ngokweendlela ezahlukeneyo zokusetyenziswa, i-carbon emnyama kunye negraphite eyenziweyo nayo isetyenziswa njengezongezo.Ngokubanzi, i-petroleum coke kunye ne-asphalt coke kufuneka ifakwe kwi-calcined kwi-1200 ~ 1400 ℃ ukususa ukufuma kunye nezinto eziguquguqukayo ngaphambi kokusetyenziswa.
Nangona kunjalo, ukuze kuphuculwe iipropathi zoomatshini kunye nokuxinana kwesakhiwo seemveliso, kukho ukuveliswa ngokuthe ngqo kwegraphite ye-isostatic ecinezelayo kusetyenziswa izinto ezikrwada ezifana necoke.Uphawu lokupheka kukuba iqulethe izinto eziguquguqukayo, ineempawu zokuzibamba, kwaye yanda kwaye yenza iikhontrakthi ngokuhambelana ne-binder coke.Isibophelelo sikholisa ukusebenzisa itela yetha yamalahle, kwaye ngokweemeko zezixhobo ezahlukeneyo kunye neemfuno zenkqubo yeshishini ngalinye, indawo yokuthambisa yetela yamalahle esetyenzisiweyo isuka kuma-50 ℃ ukuya kuma-250 ℃.
Ukusebenza kwegraphite ye-isostatic yokucinezela kuchaphazeleka kakhulu ngezinto eziluhlaza, kwaye ukukhethwa kwezinto eziluhlaza likhonkco eliphambili ekuveliseni imveliso yokugqibela efunekayo.Ngaphambi kokutya, iimpawu kunye nokufana kwezinto eziluhlaza kufuneka zihlolwe ngokungqongqo.
1.2 Ukusila
Ubungakanani be-aggregate yegraphite ecinezelayo ye-isostatic ikholisa ukufunwa ukufikelela ngaphantsi kwe-20um.Okwangoku, eyona graphite icokisekileyo ye-isostatic icokisekileyo inobukhulu beqhekeza le-1 μ m.Ibhityile kakhulu.
Ukusila i-aggregate coke ibe ngumgubo ocolekileyo, kufuneka isityumzi esicolekileyo kakhulu.Ukugaya nge-particle ye-particle ye-10-20 μ I-powder ye-m idinga ukusetyenziswa kwe-roller mill, kunye ne-avareji yobukhulu be-particle engaphantsi kwe-10 μ I-powder ye-m idinga ukusetyenziswa kwe-grinder yokuhamba emoyeni.
1.3 Ukuxuba kunye nokuxova
Beka umgubo womhlaba kunye nesibophelelo setela yetha yelahle ngokulinganayo kwisixube sokufudumeza sokuxova, ukuze umaleko we-asphalt unamathele ngokulinganayo kumphezulu wamasuntswana ecoke yomgubo.Emva kokuxova, susa intlama kwaye uyiyeke ipholile.
Ixesha lokuposa: Sep-27-2023