Ubuchwepheshe bokukhiqiza izinsimbi ze-graphite zokuncibilikisa ithusi buyashintsha. Le nqubo isebenzisa indlela yokucindezela ye-isostatic esezingeni eliphezulu kakhulu emhlabeni futhi yakhiwe ngaphansi kwengcindezi ephezulu engu-600MPa ukuze kuqinisekiswe ukuthi isakhiwo sangaphakathi se-crucible siyafana futhi asinasici futhi sinamandla aphezulu kakhulu. Lokhu okusha akuthuthukisi kuphela ukusebenza kwe-crucible, kodwa futhi kwenza impumelelo enkulu ekongiweni kwamandla kanye nokuvikelwa kwemvelo.
Izinzuzo zokucindezela okubandayo kwe-isostatic
Isakhiwo sangaphakathi siyafana futhi asinasici
Ngaphansi kokubunjwa kokucindezela okuphezulu, isakhiwo sangaphakathi se-copper-graphite crucible sifana kakhulu ngaphandle kokulimala. Lokhu kuphambene kakhulu nezindlela zendabuko zokusika. Ngenxa yokucindezela okuphansi, izindlela zendabuko ngokungenakugwenywa ziholela ekukhubazekeni kwesakhiwo sangaphakathi esithinta amandla ayo kanye nokuhamba kokushisa.
Amandla aphezulu, udonga oluncane lwe-crucible
Indlela yokucindezela ye-isostatic ebandayo ithuthukisa kakhulu amandla e-crucible ngaphansi kwengcindezi ephezulu. Amandla amakhulu avumela izindonga ze-crucible ukuba zenziwe zibe mncane, ngaleyo ndlela zikhulise ukuqhutshwa kokushisa nokunciphisa ukusetshenziswa kwamandla. Uma kuqhathaniswa neziphambano zendabuko, lolu hlobo olusha lwe-crucible lufaneleka kakhulu ukukhiqiza okuphumelelayo nezidingo zokonga amandla.
Excellent conductivity ezishisayo kanye low energy ukusetshenziswa
Amandla aphezulu kanye nesakhiwo esinezindonga ezincane ezincibilikisiwe ze-graphite zethusi ziphumela ekuziphatheni okungcono kakhulu kokushisa uma kuqhathaniswa nezinsimbi ezivamile. Ukuthuthukisa ukuhanjiswa kwe-thermal kusho ukuthi ukushisa kungadluliswa ngokulinganayo nangokushesha ngesikhathi senqubo yokuncibilikisa ama-alloys e-aluminium, ama-zinc alloys, njll., ngaleyo ndlela kunciphisa ukusetshenziswa kwamandla nokuthuthukisa ukusebenza kahle kokukhiqiza.
Ukuqhathanisa nezindlela zokukhiqiza zendabuko
Imikhawulo yezindlela zokusika
Iningi lama-graphite crucibles akhiqizwa ekhaya enziwa ngokusika bese ngokufakwa. Le ndlela iholela ezinhlakeni zangaphakathi ezingalingani, ezinesici, nezinamandla aphansi ngenxa yengcindezi ephansi. Ngaphezu kwalokho, ine-conductivity ephansi ye-thermal kanye nokusetshenziswa okuphezulu kwamandla, okwenza kube nzima ukuhlangabezana nezidingo zemboni yesimanje yokusebenza kahle kakhulu nokonga amandla.
Ububi babalingisi
Abanye abakhiqizi balingisa indlela yokucindezela ye-isostatic ebandayo ukuze bakhiqize iziphambano, kodwa ngenxa yengcindezi yokukhiqiza enganele, iningi labo likhiqiza izinsimbi ze-silicon carbide. Lawa ma-crucibles anezindonga eziwugqinsi, ukungaphatheki kahle kwe-thermal, kanye nokusetshenziswa kwamandla okuphezulu, okukude ne-copper graphite crucibles yangempela encibilikisiwe ekhiqizwa ukucindezela okubandayo kwe-isostatic.
Izimiso zobuchwepheshe kanye nezicelo
Enqubweni yokuncibilikisa i-aluminium ne-zinc alloys, ukumelana ne-oxidation kanye nokusebenza okushisayo kwe-crucible yizici ezibalulekile. Ama-crucibles akhiqizwa kusetshenziswa indlela ebandayo ye-isostatic pressing igcizelela ngokukhethekile ukumelana ne-oxidation kuyilapho igwema imiphumela emibi yokuguquguquka okuqukethe i-fluoride. Lezi zikhilimu zigcina ukusebenza okuhle kakhulu emazingeni okushisa aphezulu ngaphandle kokungcolisa insimbi, kuthuthukisa kakhulu ukuqina.
Isicelo ku-aluminium alloy smelting
I-graphite crucible idlala indima ebalulekile ekuncibilikeni kwama-alloys e-aluminium, ikakhulukazi ekukhiqizeni ama-die castings nama-castings. Izinga lokushisa elincibilikayo le-aluminium alloy liphakathi kuka-700°C no-750°C, okuphinde kube yibanga lokushisa lapho i-graphite ifakwa khona i-oxidized kalula. Ngakho-ke, ama-graphite crucibles akhiqizwa ukucindezela okubandayo kwe-isostatic agcizelela ngokukhethekile ukumelana ne-oxidation ukuqinisekisa ukusebenza okuhle kakhulu emazingeni okushisa aphezulu.
Idizayinelwe izindlela ezahlukene zokuncibilika
I-graphite crucible ifaneleka ezinhlobonhlobo zezindlela zokuncibilikisa, okuhlanganisa ukuncibilikisa kwesithando somlilo esisodwa kanye nokuncibilikisa okuhlangene nokugcinwa kokushisa. Ngokusakazwa kwe-aluminium alloy, idizayini ye-crucible idinga ukuhlangabezana nezidingo zokuvimbela ukumuncwa kwe-H2 nokuxutshwa kwe-oxide, ngakho-ke kusetshenziswa i-crucible evamile noma i-crucible emise okwesitsha somlomo omkhulu. Ezithandweni zokuncibilikisa ezimaphakathi, izithando zomlilo ezitshekisayo zivame ukusetshenziselwa ukuvuselela imfucuza encibilikayo.
Ukuqhathaniswa kwezici zokusebenza
Ukuminyana okuphezulu kanye ne-thermal conductivity
Ukuminyana kwama-graphite crucibles akhiqizwa ukucindezela okubandayo kwe-isostatic kuphakathi kuka-2.2 no-2.3, okuwukuminyana okuphezulu kakhulu phakathi kwama-crucible emhlabeni. Lokhu kuminyana okuphezulu kunikeza i-crucible optimal conductivity ye-thermal, engcono kakhulu kunezinye izinhlobo ze-crucibles.
Ukumelana nokugqwala nokugqwala
Ingaphezulu le-aluminium encibilikisiwe ye-graphite crucible limbozwe izingqimba ezine ze-glaze ekhethekile, ehlanganiswe nezinto ezibunjwayo eziminyene, ithuthukisa kakhulu ukumelana nokugqwala kwe-crucible futhi inwebe impilo yayo yenkonzo. Ngokuphambene nalokho, ama-crucibles asekhaya anengqimba kuphela ye-cement eqinisiwe ebusweni, ewonaka kalula futhi ibangele i-oxidation ngaphambi kwesikhathi ye-crucible.
Ukwakheka kanye conductivity ezishisayo
I-copper graphite crucible encibilikisiwe isebenzisa i-graphite yemvelo, ene-conductivity enhle kakhulu yokushisa. Ngokuphambene, ama-graphite crucibles asekhaya asebenzisa i-graphite yokwenziwa, ukunciphisa okuqukethwe kwe-graphite ukunciphisa izindleko, futhi engeza inani elikhulu lobumba lokubumba, ngakho-ke ukuqhutshwa kokushisa kuyancipha kakhulu.
Izindawo zokupakisha nezicelo
Ukupakisha
I-copper graphite crucible encibilikisiwe ngokuvamile ihlanganiswa futhi ihlanganiswe ngentambo yotshani, okuyindlela elula nesebenzayo.
Ukunwetshwa kwezinkambu zezicelo
Ngokuthuthuka okuqhubekayo kobuchwepheshe, izinkambu zokufaka izicelo zama-graphite crucibles ziyaqhubeka nokukhula. Ikakhulukazi ekukhiqizweni kwe-aluminium alloy die castings kanye ne-castings, ama-graphite crucibles kancane kancane ashintsha amabhodwe ensimbi ajwayelekile ukuze ahlangabezane nezidingo zokukhiqiza izingxenye zezimoto ezisezingeni eliphezulu.
Ekuphetheni
Ukusetshenziswa kwendlela yokucindezela ye-isostatic ebandayo kulethe ukusebenza nokusebenza kahle kokuncibilikiswa kwe-copper-graphite crucible ezingeni elisha. Kungakhathaliseki ukuthi ukufana, amandla noma ukuqhutshwa kokushisa kwesakhiwo sangaphakathi, kungcono kakhulu kunezindlela zokukhiqiza zendabuko. Ngokusetshenziswa okubanzi kwalobu buchwepheshe obuthuthukisiwe, isidingo semakethe se-graphite crucibles sizoqhubeka nokukhula, siqhubekisele yonke imboni ikusasa elisebenza kahle nelinobungani bemvelo.
Isikhathi sokuthumela: Jun-05-2024