I-Isostatic graphite, eyaziwa nangokuthi i-graphite eyakhelwe i-isostatically, ibhekisela endleleni lapho ingxube yezinto ezingavuthiwe icindezelwa ibe amabhulokhi angunxande noma ayindilinga ohlelweni olubizwa ngokuthi i-cold isostatic pressing (CIP). Ukucindezela okubandayo kwe-isostatic kuyindlela yokucubungula okubalulekile lapho izinguquko zengcindezi yoketshezi oluvalekile, olungenakucindezelwa ludluliselwa ngokungaguquki kuyo yonke ingxenye yoketshezi, okuhlanganisa nangaphezulu kwesiqukathi salo.
Uma kuqhathaniswa namanye amasu afana nokwakhiwa kwe-extrusion kanye nokudlidliza, ubuchwepheshe be-CIP bukhiqiza i-graphite yokwenziwa ye-isotropic kakhulu.I-Isostatic graphitefuthi ngokuvamile inosayizi omncane wokusanhlamvu wanoma iyiphi i-graphite yokwenziwa (cishe ama-microns angu-20).
Inqubo yokukhiqiza ye-isostatic graphite
Ukucindezela kwe-Isostatic kuyinqubo enezigaba eziningi evumela ukuthola amabhulokhi afanayo kakhulu anemingcele engaguquki yomzimba kuzo zonke izingxenye namaphoyinti.
Izici ezijwayelekile ze-isostatic graphite:
• Ukushisa okuphezulu kakhulu nokumelana namakhemikhali
• Ukumelana nokushaqeka okuhle kakhulu okushisayo
• High conductivity kagesi
• High conductivity ezishisayo
• Yandisa amandla ngokukhuphuka kwezinga lokushisa
• Kulula ukucubungula
• Ingakhiqizwa ngokuhlanzeka okuphezulu kakhulu (<5 ppm)
Ukwenziwa kweisostatic graphite
1. Ikhekhe
I-coke iyisakhi esikhiqizwa ezindaweni zokuhluza uwoyela ngokushisisa amalahle aqinile (600-1200°C). Inqubo yenziwa kumahhavini e-coke aklanywe ngokukhethekile kusetshenziswa amagesi avuthayo kanye nokunikezwa okulinganiselwe komoya-mpilo. Inevelu ye-calorific ephakeme kunamalahle avamile ezinsalela.
2. Ukuchoboza
Ngemva kokuhlola impahla eluhlaza, ichotshozwa usayizi othile kuyizinhlayiyana. Imishini ekhethekile yokugaya i-material idlulisa impushana yamalahle enhle kakhulu etholakala ezikhwameni ezikhethekile futhi ihlukanise ngokwesayizi yezinhlayiyana.
Iphimbo
Lokhu kuwumkhiqizo wokuphekwa kwamalahle aqinile, okungukuthi ukugazinga ku-1000-1200°C ngaphandle komoya. I-pitch iwuketshezi olumnyama oluminyene.
3. Ukuxova
Ngemva kokuba inqubo yokugaya i-coke isiqediwe, ihlanganiswa ne-pitch. Zombili izinto zokusetshenziswa zixutshwa ekushiseni okuphezulu ukuze amalahle ancibilike futhi ahlanganiswe nezinhlayiya ze-coke.
4. I-pulverization yesibili
Ngemuva kwenqubo yokuxuba, amabhola ekhabhoni amancane ayakhiwa, okumele aphinde agaywe futhi abe yizinhlayiya ezinhle kakhulu.
5. Ukucindezela kwe-Isostatic
Uma izinhlayiya ezinhle zobukhulu obudingekayo sezilungisiwe, isigaba sokucindezela siyalandela. I-powder etholiwe ifakwe ezibunjeni ezinkulu, ubukhulu bayo obuhambisana nosayizi wokugcina we-block. I-carbon powder ekubunjweni ibhekene nokucindezela okuphezulu (okungaphezu kuka-150 MPa), okusebenzisa amandla afanayo nokucindezela ezinhlayiyeni, ukuwahlela ngokulinganayo futhi ngaleyo ndlela kusatshalaliswe ngokulinganayo. Le ndlela ivumela ukuthola imingcele efanayo ye-graphite kulo lonke isikhunta.
6. I-Carbonization
Isigaba esilandelayo nesinde kunazo zonke (izinyanga ezingu-2-3) sibhaka esithandweni somlilo. Izinto ezicindezelwe ngokwe-isostatically zifakwa esithandweni esikhulu, lapho izinga lokushisa lifinyelela ku-1000°C. Ukuze ugweme noma yikuphi ukukhubazeka noma imifantu, izinga lokushisa esithandweni lihlala lilawulwa. Ngemuva kokuqedwa kokubhaka, ibhulokhi ifinyelela ubulukhuni obudingekayo.
7. I-Pitch Impregnation
Kulesi sigaba, ibhulokhi ingafakwa nge-pitch futhi ishiswe futhi ukuze kuncishiswe i-porosity yayo. I-impregnation imvamisa yenziwa nge-pitch ene-viscosity ephansi kune-pitch esetshenziswa njenge-binder. I-viscosity ephansi iyadingeka ukuze ugcwalise izikhala ngokunembe kakhudlwana.
8. I-Graphitization
Kulesi sigaba, i-matrix ye-athomu ye-carbon iye yahlelwa futhi inqubo yokuguqulwa kusuka ku-carbon kuya ku-graphite ibizwa ngokuthi i-graphitization. I-Graphitization ukushisisa kwebhulokhi ekhiqiziwe ekushiseni okungaba ngu-3000°C. Ngemuva kwe-graphitization, ukuminyana, ukuqhutshwa kukagesi, ukuqhutshwa kwe-thermal kanye nokumelana nokugqwala kuthuthukiswa kakhulu, nokusebenza kahle kokucubungula nakho kuyathuthukiswa.
9. I-Graphite Material
Ngemuva kwe-graphitization, zonke izakhiwo ze-graphite kufanele zihlolwe - kufaka phakathi usayizi wokusanhlamvu, ukuminyana, ukugoba namandla okucindezela.
10. Iyacubungula
Uma impahla isilungisiwe ngokuphelele futhi isihloliwe, ingenziwa ngokuya ngemibhalo yekhasimende.
11. Ukuhlanzwa
Uma i-isostatic graphite isetshenziswa ku-semiconductor, i-crystal crystal silicon eyodwa kanye nezimboni zamandla e-athomu, ukuhlanzeka okuphezulu kuyadingeka, ngakho konke ukungcola kufanele kususwe ngezindlela zamakhemikhali. Umkhuba ojwayelekile wokukhipha ukungcola kwe-graphite ukubeka umkhiqizo owenziwe i-graphitize kugesi we-halogen bese uwushisa ufinyelele ku-2000°C.
12. Ukwelashwa kwendawo
Kuye ngokusetshenziswa kwe-graphite, indawo yayo ingaba phansi futhi ibe nobuso obushelelezi.
13. Ukuthumela ngemikhumbi
Ngemuva kokucubungula kokugcina, imininingwane eqediwe ye-graphite iyapakishwa futhi ithunyelwe kukhasimende.
Ukuze uthole ulwazi olwengeziwe ngamasayizi atholakalayo, amamaki e-isostatic graphite namanani, sicela ukhululeke ukusithinta. Onjiniyela bethu bazokujabulela ukukweluleka ngezinto ezifanele futhi baphendule yonke imibuzo yakho.
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Isikhathi sokuthumela: Sep-14-2024