Iresiphi yeGraphite Silicon Carbide Crucibles: Isitshixo sokuSebenza okuPhezulu kweMetallurgy

Kwihlabathi lesinyithi kunye nesayensi yezixhobo,isiphambukasisixhobo esibalulekileyo sokunyibilika kunye nokuphosa isinyithi.Phakathi kweentlobo ngeentlobo ze-crucibles, i-graphite silicon carbide (i-SiC) i-crucibles ivelele kwiipropati zabo ezikhethekileyo, ezifana ne-conductivity ephezulu ye-thermal, ukuxhathisa ukothuka kwe-thermal, kunye nokuzinza okuphezulu kweekhemikhali.Kweli nqaku, siza kuhlolisisa iresiphi ye-graphite ye-SiC crucibles kwaye sihlolisise indlela ukubunjwa kwabo negalelo ngayo ekusebenzeni okuphawulekayo kwizicelo zokushisa okuphezulu.

Izithako ezisisiseko

Amacandelo aphambili e-graphite SiC crucibles yi-flake graphite kunye ne-silicon carbide.I-Flake graphite, ngokuqhelekileyo ibandakanya i-40% -50% ye-crucible, inika i-conductivity egqwesileyo ye-thermal kunye ne-lubricity, enceda ekukhululweni lula kwesinyithi.I-Silicon carbide, eyenza i-20% -50% ye-crucible, ijongene ne-crucible's high-thermal shock resistance kunye nokuzinza kweekhemikhali kumaqondo okushisa aphezulu.

Izixhobo ezongezelelweyo zokuSebenza okuPhuculweyo

Ukuqhubela phambili ukuphucula ukusebenza kobushushu obuphezulu kunye nokuzinza kweekhemikhali ze-crucible, iinqununu ezongezelelweyo zongezwa kwiresiphi:

1. I-Elemental silicon powder (4% -10%): Ukwandisa amandla okushisa aphezulu kunye nokumelana ne-oxidation ye-crucible.
2. I-Boron carbide powder (1% -5%): Yandisa ukuzinza kweekhemikhali kunye nokuchasana nezinyithi ezivuthayo.
3. Udongwe (5% -15%): Isebenza njenge-binder kwaye iphucula amandla omatshini kunye nokuzinza kwe-thermal ye-crucible.
4. I-Thermosetting binder (5% -10%): Inceda ekubopheni onke amacandelo kunye ukwenza isakhiwo esidibeneyo.

Ifomula ekwinqanaba eliphezulu

Kwizicelo ezifuna ukusebenza okuphezulu ngakumbi, i-high-end graphite crucible formula isetyenziswa.Le fomula iquka i-98% ye-graphite particles, i-2% ye-calcium oxide, i-1% ye-zirconium oxide, i-1% ye-boric acid, i-1% ye-sodium silicate, kunye ne-1% ye-aluminium silicate.Ezi zithako ezongezelelweyo zibonelela ngokuchasana okungenakulinganiswa kumaqondo okushisa aphezulu kunye neendawo ezinobungozi beekhemikhali.

Inkqubo yokuVelisa

Ukulungiswa kwee-graphite ze-SiC crucibles kubandakanya inkqubo ecokisekileyo.Ekuqaleni, i-flake graphite kunye ne-silicon carbide zixutywe kakuhle.Emva koko, i-elemental silicon powder, i-boron carbide powder, udongwe, kunye ne-thermosetting binder zongezwa kumxube.Umxube ke ucinezelekile ube kwimilo usebenzisa umatshini wokushicilela obandayo.Ekugqibeleni, i-crucibles shaped sintered kwi-furnace ephezulu yokunyusa amandla abo omatshini kunye nokuzinza kwe-thermal.

Usetyenziso kunye nezinto eziluncedo

I-Graphite SiC crucibles isetyenziswa ngokubanzi kwishishini le-metallurgical yokunyibilika kunye nokuphosa iintsimbi ezifana nentsimbi, intsimbi, ubhedu kunye ne-aluminium.I-conductivity yabo ephezulu ye-thermal iqinisekisa ukushisa okufanayo kunye nokunciphisa ukusetyenziswa kwamandla.Ukuxhatshazwa kokutshatyalaliswa kwe-thermal ephezulu kunciphisa umngcipheko wokuqhekeka ngexesha lokutshintsha kweqondo lokushisa ngokukhawuleza, ngelixa ukuzinza kwabo kweekhemikhali kuqinisekisa ukucoceka kwesinyithi esinyibilikisiweyo.

Ukuqukumbela, iresiphi ye-graphite silicon carbide crucibles yi-fine-tuned blend of materials enika ibhalansi ye-thermal conductivity, i-thermal shock resistance, kunye nokuzinza kweekhemikhali.Olu qulunqo luzenza zibe yimfuneko kwintsimi yesinyithi, apho zidlala indima ebalulekileyo ekunyibilikeni okusebenzayo nokuthembekileyo kunye nokuphosa isinyithi.

Ngokuqonda amacandelo kunye nenkqubo yokuvelisa i-graphite ye-SiC crucibles, amashishini angenza ukhetho olunolwazi kwizicelo zabo ezithile, ukuqinisekisa ukusebenza kakuhle kunye nobude bezinto ezinqamlekileyo.Njengoko iteknoloji ihambela phambili, uphuculo olongezelelekileyo kwiresiphi kunye nobuchule bokwenziwa kwe-graphite SiC crucibles kulindeleke, ivule indlela yeenkqubo ezisebenzayo nezizinzileyo ze-metallurgical.