Ibisobanuro birambuye kuri Isostatic Pressing Graphite (2)

1.4 Gusya kwa kabiri

Iyo paste irajanjagurwa, hasi, ikayungurura ibice bya micrometero mirongo kugeza ku magana mu bunini mbere yo kuvangwa neza. Ikoreshwa nkibikoresho bikanda, byitwa gukanda. Ibikoresho byo gusya bwa kabiri mubisanzwe bikoresha vertical roller urusyo cyangwa urusyo.

1.5 Gushiraho

Bitandukanye no gusohora bisanzwe no kubumba,isostatike ikanda igishushanyoikorwa hifashishijwe ikoranabuhanga rikonje rya isostatike (Ishusho 2). Uzuza ifu y'ibikoresho fatizo mububiko bwa reberi, hanyuma ugabanye ifu unyuze mumashanyarazi yumuriro mwinshi. Nyuma yo gufunga, vuga ibice by'ifu kugirango unanize umwuka hagati yabo. Shyira mu kintu cyumuvuduko mwinshi kirimo itangazamakuru ryamazi nkamazi cyangwa amavuta, kanda kuri 100-200MPa, hanyuma ukande mubicuruzwa bya silindrike cyangwa urukiramende.

Ukurikije ihame rya Pascal, igitutu gikoreshwa muburyo bwa reberi binyuze mumazi nkamazi, kandi umuvuduko uringaniye mubyerekezo byose. Muri ubu buryo, ibice by'ifu ntabwo byerekejwe mu cyerekezo cyuzuye muburyo, ahubwo bigabanijwe muburyo budasanzwe. Kubwibyo, nubwo grafite ari anisotropique mumiterere ya kristu yerekana, muri rusange, gukanda isostatike ni isotropic. Ibicuruzwa byakozwe ntabwo bifite gusa silindrike nu mpande enye, ahubwo bifite na silindrike kandi ikomeye.

Imashini ikanda ya isostatike ikoreshwa cyane cyane munganda zikora ifu. Bitewe ninganda zinganda zo mu rwego rwo hejuru nko mu kirere, inganda za kirimbuzi, amavuta akomeye, hamwe na electromagnetic nini cyane, iterambere ry’ikoranabuhanga rikanda ryihuta cyane, kandi rifite ubushobozi bwo gukora imashini zikanda za isostatike zikonje hamwe na silinderi ikora imbere imbere ya 3000mm, uburebure bwa 5000mm, hamwe nigitutu kinini cyakazi cya 600MPa. Kugeza ubu, ibisobanuro ntarengwa by’imashini zikonjesha isostatike zikoreshwa mu nganda za karubone mu gukora ibishushanyo mbonera bya isostatike ni Φ 2150mm × 4700mm, hamwe n’umuvuduko mwinshi wa 180MPa.

1.6 Guteka

Mugihe cyo gutwika, imiti igoye iba hagati yikusanyirizo hamwe nigitereko, bigatuma igitereko cyangirika kandi kikarekura ibintu byinshi bihindagurika, mugihe nanone bigenda byoroha. Mu cyiciro cyo gushyushya ubushyuhe buke, ibicuruzwa bibisi byiyongera kubera gushyuha, kandi mugihe cyo gushyushya gukurikiraho, amajwi aragabanuka kubera reaction ya reaction.

Ninini yubunini bwibicuruzwa bibisi, niko bigorana kurekura ibintu bihindagurika, kandi hejuru hamwe nimbere yibicuruzwa bibisi bikunda gutandukana nubushyuhe, kwaguka kwinshi hamwe no kugabanuka, bishobora gutera gucika mubicuruzwa bibisi.

Bitewe nuburyo bwiza, gukanda grafite isostatike bisaba uburyo bwo gutwika buhoro, kandi ubushyuhe buri mu itanura bugomba kuba bumwe, cyane cyane mugihe cyubushyuhe aho imyuka ya asifalt isohoka vuba. Igikorwa cyo gushyushya kigomba gukorwa mubwitonzi, hamwe nubushyuhe butarenze 1 ℃ / h hamwe nubushyuhe bwubushyuhe mu itanura ritarenze 20 ℃. Iyi nzira itwara amezi 1-2.

1.7 Kwinjira

Mugihe cyo kotsa, ibintu bihindagurika byikara ryamakara birasohoka. Ibinure byiza bisigara mubicuruzwa mugihe cyo gusohora gaze no kugabanuka kwijwi, hafi ya byose ni imyenge ifunguye.

Mu rwego rwo kunoza ubwinshi bwijwi, imbaraga zumukanishi, ubwikorezi, ubushyuhe bwumuriro, hamwe n’imiti irwanya imiti, uburyo bwo kwinjiza igitutu burashobora gukoreshwa, bikubiyemo kwinjiza ikariso y’amakara imbere y’ibicuruzwa binyuze mu byobo bifunguye.

Ibicuruzwa bigomba kubanza gushyukwa, hanyuma bigahinduka kandi bikangirika mu kigega cyo gutera akabariro. Hanyuma, asifalt yamakara yashongeshejwe yongewe mukigega cyo gutera akabariro hanyuma kotswa igitutu kugirango asifalt yinjiza yinjira imbere mubicuruzwa. Mubisanzwe, isostatike ikanda grafite ikora inzinguzingo nyinshi zo gutwika.

1.8 Igishushanyo

Shyushya ibicuruzwa bibarwa kugeza kuri 3000 ℃, tegura uruzitiro rwa atome ya karubone muburyo bukurikiranye, hanyuma urangize guhinduka kuva karubone ujya kuri grafite, ibyo bita grafite.

Uburyo bwo gushushanya burimo uburyo bwa Acheson, uburyo bwo guhuza ubushyuhe bwimbere bwimbere, uburyo bwo kwinjiza inshuro nyinshi, nibindi. Ubusanzwe inzira ya Acheson itwara amezi agera kuri 1-1.5 kugirango ibicuruzwa bipakururwe kandi bisohore mu itanura. Buri ziko rishobora gutwara toni nyinshi kugeza kuri toni icumi yibicuruzwa byokeje.