Isostatic latsa graphitesabon nau'in kayan graphite ne wanda aka haɓaka a cikin 1960s, wanda ke da jerin kyawawan kaddarorin. Alal misali, graphite isostatic yana da kyakkyawan juriya na zafi. A cikin yanayi mara kyau, ƙarfin injinsa ba kawai ya ragu tare da haɓakar zafin jiki ba, har ma yana ƙaruwa, yana kaiwa mafi girman darajarsa a kusan 2500 ℃; Idan aka kwatanta da graphite na yau da kullun, tsarinsa yana da kyau kuma yana da yawa, kuma daidaitonsa yana da kyau; Ƙididdigar haɓakar haɓakar thermal yana da ƙananan ƙananan kuma yana da kyakkyawan juriya na thermal; Isotropic; Ƙarfin juriya na lalata sinadarai, kyakkyawan yanayin zafi da lantarki; Yana da kyakkyawan aikin sarrafa injina.
Daidai ne saboda kyakkyawan aikin sa wanda ake amfani da graphite na istatic a ko'ina a fannoni kamar ƙarfe, sunadarai, lantarki, sararin samaniya, da masana'antar makamashin atomic. Haka kuma, tare da ci gaban kimiyya da fasaha, filayen aikace-aikacen suna ci gaba da fadadawa.
Production tsari na isostatic latsa graphite
Ana nuna tsarin samar da matsi na istatic graphite a cikin Hoto 1. A bayyane yake cewa tsarin samar da matsi na graphite ya bambanta da na lantarki na graphite.
Isostatic latsa graphite yana buƙatar kayan albarkatun isotropic na tsari, waɗanda ke buƙatar ƙasa zuwa ƙoshin foda. Cold isostatic latsa kafa fasaha yana buƙatar amfani da fasaha, kuma sake zagayowar gasa yana da tsayi sosai. Domin cimma maƙasudin yawa, mahara impregnation gasa hawan keke ake bukata, da graphitization sake zagayowar ya fi na talakawa graphite tsawo da yawa.
Wata hanya don samar da isostatic latsa graphite shine amfani da mesophase carbon microspheres azaman albarkatun ƙasa. Da fari dai, mesophase carbon microspheres suna fuskantar maganin daidaitawar iskar shaka a yanayin zafi mafi girma, sannan kuma latsawar isostatic, biye da ƙarin ƙididdiga da graphitization. Ba a gabatar da wannan hanyar a cikin wannan labarin ba.
1.1 Kayan danye
The albarkatun kasa don samar da isostatic latsa graphite sun haɗa da aggregates da binders. Aggregates yawanci ana yin su ne daga man petroleum coke da kwalta coke, da kuma kwalta coke na ƙasa. Misali, AXF jerin isostatic graphite da POCO ke samarwa a Amurka an yi shi ne daga coke na kwalta Gilsontecoke.
Domin daidaita aikin samfur bisa ga amfani daban-daban, ana amfani da baƙar fata na carbon da graphite na wucin gadi azaman ƙari. Gabaɗaya, coke na man fetur da coke na kwalta suna buƙatar a ƙididdige su a 1200 ~ 1400 ℃ don cire danshi da abubuwa maras tabbas kafin amfani.
Koyaya, don haɓaka kaddarorin injina da ƙarancin tsarin samfuran, akwai kuma samar da kai tsaye na istatic graphite ta amfani da albarkatun ƙasa kamar coke. Siffar coking ita ce tana ƙunshe da kwayoyin halitta masu canzawa, yana da kaddarorin sarrafa kansa, kuma yana faɗaɗawa da kwangila tare da haɗin gwiwa tare da coke mai ɗaure. Mai ɗaure yawanci yana amfani da farar kwal ɗin kwal, kuma bisa ga yanayin kayan aiki daban-daban da buƙatun aiwatar da kowane kamfani, wurin laushi na farar kwal ɗin da aka yi amfani da shi ya bambanta daga 50 ℃ zuwa 250 ℃.
Ayyukan graphite na matsi na isostatic yana tasiri sosai da albarkatun ƙasa, kuma zaɓin albarkatun ƙasa shine maɓalli mai mahimmanci wajen samar da samfurin ƙarshe da ake buƙata. Kafin ciyarwa, dole ne a bincika halaye da daidaitattun kayan albarkatun ƙasa.
1.2 Niƙa
Girman jimlar graphite isostatic ana buƙatar yawanci don isa ƙasa da 20um. A halin yanzu, graphite mafi inganci mafi inganci yana da matsakaicin diamita na 1 μm. Siriri ne sosai.
Don niƙa jimlar coke a cikin irin wannan foda mai kyau, ana buƙatar muƙamuƙi mai kyau. Yin niƙa tare da matsakaicin matsakaicin girman 10-20 μ Foda na m yana buƙatar amfani da injin nadi a tsaye, tare da matsakaicin matsakaicin girman ƙasa da 10 μ Foda na m yana buƙatar amfani da injin injin iska.
1.3 Yin cuku da cuku
A sa foda na ƙasa da maɗaurin kwal ɗin kwal ɗin daidai gwargwado a cikin mahaɗin dumama don ƙulluwa, ta yadda za a manne kwalta a ko'ina a saman barbashi na coke na foda. Bayan kun gama, cire manna kuma bar shi ya huce.
Lokacin aikawa: Satumba-27-2023