Isici esibalulekile sokusebenza okungabizi kakhulu kwesithando somlilo se-vacuum sintering ukusetshenziswa kwezomnotho kwegesi yenqubo namandla. Ngokwezinhlobo ezahlukene zegesi, lezi zingxenye ezimbili zezindleko zenqubo ye-sintering zingabalelwa ku-50% wesamba sezindleko. Ukuze kongiwe ukusetshenziswa kwegesi, imodi yokucindezela ingxenye yegesi eguquguqukayo kufanele isetshenziswe ukuze kuqinisekiswe ukuthi izinqubo zokukhipha amafutha kanye ne-sintering zikhululekile ekungcoleni. Ukuze kuncishiswe ukusetshenziswa kwamandla, izinto zokushisisa ezithuthukisiwe zisetshenziselwa ukukhiqiza izindawo ezishisayo ukuze kwehliswe ukulahlekelwa ukushisa. Ukuze ubone lawa maphuzu edizayini futhi ulawule izindleko ze-R & D phakathi kwebanga elinengqondo, isithando somlilo sesimanje esilondoloza izinsiza sizosebenzisa amathuluzi okubala we-hydrodynamic ukuze kutholwe ukugeleza komoya okuphelele nemodi yokugeleza kokushisa.
Ukusebenza kwezinhlobo ezahlukene zesithando somlilo
Ngaphandle kwesistimu eyenziwe ngokwezifiso nekhetheke kakhulu, izithando zomlilo eziningi emakethe zingahlukaniswa zibe isithando somlilo se-vacuum ngezikhathi ezithile kanye nesithando somlilo esiqhubekayo. Izingxenye ezinsundu ngemuva kokubunjwa komjovo kanye ne-catalytic / degreasing ziqukethe i-polymer esele. Zombili izinhlobo zesithando somlilo zihlinzeka ngohlelo lokukhishwa okushisayo kwe-polymer.
Ngakolunye uhlangothi, kufaneleka kakhulu ukusebenzisa ngokugcwele isithando somlilo esiqhubekayo uma siyingxenye enkulu enokukhiqizwa kwenqwaba okungaguquki ngokuphelele noma ukuma okufanayo. Kulokhu, ngomjikelezo omfushane kanye nomthamo ophezulu we-sintering, inani elifanele lezindleko-inzuzo lingatholakala. Kodwa-ke, emigqeni yokukhiqiza emincane naphakathi, lesi sithando somlilo esiqhubekayo esinomphumela omncane wonyaka we-150-200t, izindleko zokufakwayo eziphezulu kanye nevolumu enkulu akukona ukonga. Ngaphezu kwalokho, isithando somlilo esiqhubekayo sidinga isikhathi eside sokuvala shaqa, okunciphisa ukuguquguquka kokukhiqiza.
Ngakolunye uhlangothi, i-periodic vacuum sintering furnace inobuchwepheshe obuvelele bokulawula inqubo yokwehlisa amafutha. Imikhawulo okukhulunywe ngayo ekuqaleni, okuhlanganisa ukuwohloka kwejometri nokubola kwamakhemikhali ezingxenyeni ze-MIM, kungaxazululwa ngempumelelo. Isixazululo esisodwa ukugeza izinto ezibophezelayo eziguquguqukayo ngegesi yenqubo ye-laminar ngokusebenzisa isistimu yokulawula igesi enembile. Ngaphezu kwalokho, ngokunciphisa umthamo wendawo eshisayo, ukufana kwezinga lokushisa kwesithando somlilo kuhle kakhulu, kuze kufike ku-LK. Ngokuvamile, isithando somlilo sinokuhlanzeka okuhle komkhathi, imingcele yenqubo eguquguqukayo yesithando somlilo esiphezulu se-vacuum sintering kanye nokudlidliza kwengxenye encane, okwenza kube ukukhetha kobuchwepheshe ukukhiqizwa kwezingxenye ezisezingeni eliphezulu (njengamadivayisi ezokwelapha). Izinkampani eziningi zibhekana nama-oda ashintshashintshayo futhi zidinga ukukhiqiza izingxenye ezinokwakheka nezinto ezihlukile. Okokufaka okuphansi kanye nokuguquguquka komjikelezo ophezulu wesithando somlilo se-vacuum sintering kuzodala izimo ezivumayo kubo. Ukugijima kweqembu leziqhumiso ze-vacuum akukwazi nje ukunikeza imigqa yokukhiqiza eningi, kodwa futhi kuqhube izinqubo zezinqubo ezahlukene ngesikhathi esisodwa.
Kodwa-ke, amanye amafurnashi e-vacuum sintering asebenzayo anezinzuzo zobuchwepheshe ezingenhla anqunyelwe umthamo omncane otholakalayo. Ukungalungi kwabo esilinganisweni sokuphumayo kanye nokusetshenziswa kwamandla aphansi kwenza izindleko ze-sintering zezingxenye zinciphise izindleko ezilondolozwe kwenye i-MIM pr.
Isikhathi sokuthumela: May-07-2022