Iresiphi ye-Graphite Silicon Carbide Crucibles: Isihluthulelo se-High-Performance Metallurgy

Emhlabeni we-metallurgy nesayensi yezinto zokwakha,i-crucibleiyithuluzi elibalulekile lokuncibilikisa nokuphonsa izinsimbi. Phakathi kwezinhlobo ezihlukahlukene zama-crucibles, i-graphite silicon carbide (SiC) crucibles ivelele ngenxa yezakhiwo zayo ezingavamile, njengokuhamba okuphezulu kwe-thermal, ukumelana nokushaqeka okuhle kakhulu kwe-thermal, kanye nokuzinza kwamakhemikhali okuphakeme. Kulesi sihloko, sizocubungula iresiphi ye-graphite SiC crucibles futhi sihlole ukuthi ukubunjwa kwabo kunomthelela kanjani ekusebenzeni kwabo okuphawulekayo ekusetshenzisweni kwezinga lokushisa eliphezulu.

Izithako Eziyisisekelo

Izingxenye eziyinhloko ze-graphite SiC crucibles yi-flake graphite ne-silicon carbide. I-Flake graphite, ngokuvamile eyakha i-40% -50% ye-crucible, ihlinzeka ngokushisa okuhle kakhulu kwe-thermal conductivity kanye ne-lubricity, okusiza ekukhululweni kalula kwensimbi ekhonjiwe. I-silicon carbide, eyenza u-20% -50% we-crucible, inesibopho sokumelana nokushaqeka okuphezulu kwe-crucible kanye nokuzinza kwamakhemikhali emazingeni okushisa aphakeme.

Izingxenye Ezengeziwe Zokusebenza Okuthuthukisiwe

Ukuqhubeka nokuthuthukisa ukusebenza kwezinga lokushisa eliphezulu nokuzinza kwamakhemikhali e-crucible, izingxenye ezengeziwe zengezwa kuresiphi:

1. I-silicon powder ye-Elemental (4% -10%): Ithuthukisa amandla okushisa aphezulu kanye nokumelana ne-oxidation ye-crucible.
2. I-Boron carbide powder (1% -5%): Inyusa ukuqina kwamakhemikhali kanye nokumelana nezinsimbi ezigqwalayo.
3. Ubumba (5% -15%): Isebenza njengesibopho futhi ithuthukisa amandla emishini nokuzinza kokushisa kwe-crucible.
4. I-Thermosetting binder (5% -10%): Isiza ekubopheni zonke izingxenye ndawonye ukuze zakhe isakhiwo esihlangene.

I-High-End Formula

Kuzinhlelo zokusebenza ezifuna ukusebenza okuphezulu nakakhulu, kusetshenziswa ifomula ye-graphite crucible ephezulu. Le fomula inezinhlayiya ezingama-98% zegraphite, 2% calcium oxide, 1% zirconium oxide, 1% boric acid, 1% sodium silicate, kanye ne-1% ye-aluminium silicate. Lezi zithako ezengeziwe zinikeza ukumelana okungenakuqhathaniswa emazingeni okushisa aphezulu kanye nezindawo zamakhemikhali ezinolaka.

Inqubo Yokukhiqiza

Ukulungiswa kwe-graphite SiC crucibles kuhilela inqubo ecophelelayo. Ekuqaleni, i-flake graphite ne-silicon carbide zixutshwe kahle. Khona-ke, i-elemental silicon powder, i-boron carbide powder, ubumba, kanye ne-thermosetting binder yengezwa kule ngxube. Ingxube ibe isicindezelwa ibe yisimo kusetshenziswa umshini wokucindezela obandayo. Okokugcina, ama-crucibles amisekile afakwa esithandweni sokushisa okuphezulu ukuze kuthuthukiswe amandla azo emishini nokuzinza kokushisa.

Izicelo kanye Nezinzuzo

I-graphite SiC crucibles isetshenziswa kabanzi embonini ye-metallurgical ukuncibilikisa nokuphonsa izinsimbi ezifana nensimbi, insimbi, ithusi, ne-aluminium. I-conductivity yabo ephakeme yokushisa iqinisekisa ukushisa okufanayo futhi kunciphisa ukusetshenziswa kwamandla. Ukumelana nokushaqeka okuphezulu kokushisa kunciphisa ingozi yokuqhekeka ngesikhathi sokushintsha kwezinga lokushisa okusheshayo, kuyilapho ukuzinza kwabo kwamakhemikhali kuqinisekisa ukuhlanzeka kwensimbi encibilikisiwe.

Sengiphetha, iresiphi ye-graphite silicon carbide crucibles iyinhlanganisela ecushwe kahle yezinto ezihlinzeka ngebhalansi ye-thermal conductivity, ukumelana nokushaqeka okushisayo, nokuzinza kwamakhemikhali. Lokhu kwakheka kubenza babaluleke kakhulu emkhakheni we-metallurgy, lapho bedlala indima ebalulekile ekuncibilikiseni okusebenzayo nokuthembekile nokujikijelwa kwezinsimbi.

Ngokuqonda izingxenye kanye nenqubo yokukhiqiza ye-graphite SiC crucibles, izimboni zingenza izinqumo ezinolwazi ngezicelo zazo ezithile, ziqinisekise ukusebenza kahle nokuphila isikhathi eside kwe-crucibles yazo. Njengoba ubuchwepheshe buthuthuka, kulindeleke ukuthi kuthuthukiswe okwengeziwe ku-recipe nezindlela zokukhiqiza ze-graphite SiC crucibles, okuvula indlela yezinqubo zensimbi ezisebenza kahle kakhulu nezisimeme.