Indlela yokwenza i-graphite crucible: kusuka ezintweni ezingavuthiwe kuya emikhiqizweni ephelile

I-Graphite Carbon Cruciblezingamathuluzi asetshenziswa kakhulu ekuncibilikiseni insimbi, ekufakweni kwaselabhorethri, nakwezinye izinqubo zokwelapha ezisezingeni eliphezulu. Zinokusimama okuhle kakhulu kwezinga lokushisa eliphezulu kanye ne-thermal conductivity, okwenza zidume kakhulu kulezi zinhlelo zokusebenza. Lesi sihloko sizodingida indlela yokwenzaI-Carbon Graphite Crucible,kusukela ekukhethweni kwezinto ezingavuthiwe kuya ohlelweni lokukhiqiza umkhiqizo wokugcina.

Isinyathelo 1: Khetha impahla yegraphite efanele

Isinyathelo sokuqala sokwenza i-graphite crucible ukukhetha izinto ezifanele ze-graphite. Izinsimbi ze-graphite ngokuvamile zenziwe nge-graphite yemvelo noma yokwenziwa. Nazi ezinye izici okufanele uzicabangele lapho ukhetha izinto ze-graphite:

1. Ubumsulwa:

Ukuhlanzeka kwe-graphite kubalulekile ekusebenzeni kwe-crucible. I-high pure pure graphite crucibles ingasebenza ngokuzinza emazingeni okushisa aphezulu futhi ayithinteki kalula ukusabela kwamakhemikhali. Ngakho-ke, ukukhiqiza ama-graphite crucibles asezingeni eliphezulu ngokuvamile kudinga ukusetshenziswa kwezinto ezihlanzekile kakhulu ze-graphite.

2. Isakhiwo:

Ukwakheka kwe-Graphite Lined Crucible nakho kuyisici esibalulekile. I-graphite enezinhlamvu ezinhle ivame ukusetshenziselwa ukwenza ingaphakathi le-crucibles, kuyilapho i-graphite e-coarser grained isetshenziselwa ukwenza igobolondo langaphandle. Lesi sakhiwo singanikeza ukumelana nokushisa okudingekayo kanye ne-thermal conductivity ye-crucible.

3. I-Thermal conductivity:

I-graphite iyinto enhle kakhulu ye-thermal conductive, okungenye yezizathu zokuthi kungani ama-graphite crucibles asetshenziswa kabanzi ekusetshenzisweni kokushisa okuphezulu. Ukukhetha izinto ze-graphite ezine-conductivity ephezulu yokushisa kungathuthukisa izinga lokushisa nokupholisa kwe-crucible.

4. Ukumelana nokugqwala:

Kuye ngezakhiwo zezinto ezicutshungulwayo, ngezinye izikhathi kuyadingeka ukukhetha izinto ze-graphite ezinokumelana nokugqwala. Isibonelo, ama-crucibles aphatha izinto ezine-acidic noma ezine-alkali ngokuvamile adinga i-graphite enokumelana nokugqwala.

 

Isinyathelo sesi-2: Lungiselela into yokuqala yegraphite

Lapho sekukhethiwe okufanelekile kwe-graphite, isinyathelo esilandelayo siwukulungisa ukwakheka kwe-graphite yasekuqaleni ibe sesimweni se-crucible. Le nqubo ngokuvamile ihlanganisa izinyathelo ezilandelayo:

1. Ukuchoboza:

Izinto zokuqala ze-graphite zivame ukuba zikhulu futhi zidinga ukuchotshozwa zibe yizinhlayiya ezincane ukuze zicutshungulwe ngokulandelayo. Lokhu kungafezwa ngokuchotshozwa ngomshini noma izindlela zamakhemikhali.

2. Ukuxuba nokubopha:

Izinhlayiya zegraphite ngokuvamile zidinga ukuxutshwa nama-agent abophayo ukuze zakhe umumo wokuqala we-crucible. Ama-binders angaba ama-resin, ama-adhesives, noma ezinye izinto ezisetshenziselwa ukuhlanganisa izinhlayiya ze-graphite ukugcina isakhiwo esiqinile ezinyathelweni ezilandelayo.

3. Ukucindezelwa:

I-graphite exubile ne-binder ngokuvamile idinga ukucindezelwa esimweni se-crucible ngaphansi kwezinga lokushisa eliphezulu nokucindezela. Lesi sinyathelo ngokuvamile siqedwa kusetshenziswa isikhunta esikhethekile se-crucible kanye nomshini wokunyathelisa.

4. Ukomisa:

I-crucible ecindezelwe ngokuvamile idinga ukomiswa ukuze kukhishwe umswakama nezinye izinto ezincibilikayo ku-ejenti ebophayo. Lesi sinyathelo singenziwa ekushiseni okuphansi ukuvimbela ukuguquguquka noma ukuqhekeka kwe-crucible.

 

Isinyathelo sesi-3: I-Sintering nokucubungula

Uma i-crucible yasekuqaleni isilungisiwe, izinqubo ze-sintering nezokwelashwa zidinga ukwenziwa ukuze kuqinisekiswe ukuthi i-crucible inokusebenza okudingekayo. Le nqubo ngokuvamile ihlanganisa izinyathelo ezilandelayo:

1. Ukucula:

I-Crucible yasekuqaleni ngokuvamile idinga ukucwiliswa emazingeni okushisa aphezulu ukuze kwenziwe izinhlayiya ze-graphite zihlangane ziqine futhi zithuthukise ukuminyana namandla e-crucible. Lesi sinyathelo ngokuvamile senziwa ngaphansi kwe-nitrogen noma i-inert atmosphere ukuvimbela i-oxidation.

2. Ukwelashwa kwendawo:

Izindawo zangaphakathi nezingaphandle zama-crucibles ngokuvamile zidinga ukwelashwa okukhethekile ukuze kuthuthukiswe ukusebenza kwazo. Indawo yangaphakathi ingase idinge ukumbozwa noma ukunamathela ukuze kwandiswe ukumelana nokugqwala noma ukuthuthukisa ukuqhutshwa kokushisa. Indawo yangaphandle ingase idinge ukupholishwa noma ukupholishwa ukuze uthole indawo ebushelelezi.

3. Ukuhlola nokulawula ikhwalithi:

Ukuhlolwa okuqinile nokulawulwa kwekhwalithi kufanele kwenziwe ngesikhathi sokukhiqiza ukuze kuqinisekiswe ukuthi i-crucible ihlangabezana nezidingo ezibekiwe. Lokhu kuhlanganisa ukuhlola usayizi, ukuminyana, ukuqhutshwa kwe-thermal, nokumelana nokugqwala kwe-crucible.

Isinyathelo sesi-4: Ukucubungula kokugcina kanye nemikhiqizo eqediwe

Okokugcina, i-crucible elungiswe ngezinyathelo ezingenhla ingacutshungulwa okokugcina ukuze kutholwe umkhiqizo osuphelile. Lokhu kufaka phakathi ukusika imiphetho ye-crucible, ukuqinisekisa ubukhulu obunembile, kanye nokuhlola ikhwalithi yokugcina. Uma i-crucible isidlulile ukulawulwa kwekhwalithi, ingapakishwa futhi isatshalaliswe kumakhasimende.

 

Ngamafuphi, ukwenza ama-graphite crucibles kuyinqubo eyinkimbinkimbi edinga ubuciko obunembile kanye nezinto eziphezulu ze-graphite. Ngokukhetha izinto ezifanele, ukulungiselela izinto ezingavuthiwe, ukucwiliswa kwe-sintering nokucubungula, nokusebenzisa ukulawulwa kwekhwalithi okuqinile, ama-graphite crucibles asebenza kahle angakhiqizwa ngezicelo ezahlukahlukene zokushisa okuphezulu. Ukwenziwa kwezinsimbi ze-graphite kuyingxenye ebalulekile yenkambu yobunjiniyela be-graphite, okuhlinzeka ngethuluzi elibalulekile lezinhlelo zokusebenza ezihlukahlukene zezimboni nezesayensi.