Tungsten carbide e chesa morao

Ho chesa ka morao ho bolela mokhoa oa ho qoelisa hape bakeng sa ho koba lihlahisoa tse holofetseng, tse kentsoeng ka hare, lihlahisoa tse khaotsoeng lelihlahisoa tsa tungsten carbidee nang le masoba a feteletseng.(1) Ho chesa ka morao ha lihlahisoa tse kentsoeng le tse senyehileng.Carburizing le ho chesa ka morao hangata li sebelisa likaroloana tsa graphite tse phahameng tsa mocheso kapa motsoako oa likaroloana tsa graphite le phofo ea Al2O3 e le mokhoa oa ho chesa ka morao tlas'a tšireletso ea hydrogen.
Decarburization le backburning hangata sebelisa Al203 phofo calcined ka mocheso phahameng kapa motsoako oa Al203 phofo le e ntle W phofo e le seaplane, le backburning o etsoa tlas'a tšireletso ea hydrogen.
(2) Porosity e feta tekanyo mme e chesa morao.Haeba porosity ea tungsten carbidelihlahisoa tse sintered (li-pores tse seng kholo ho feta 25 μm) li feta tekanyetso, sebōpi sa sintering sa khatello se ka sebelisoa bakeng sa ho tšela khatello ka khatello ea hoo e ka bang 10MPa.Thempereichara ea sintering e lokela ho ba ka tlase ho 20 ° C ho feta mocheso oa pele oa sintering oa sehlahisoa.Ho sebetsa ka likhatello tse phahameng ho sebelisa ho hatelloa ho chesang ha isostatic ho sebetsa haholoanyane.
(3) Ho otlolla.Backburning e etsoa ka ho sebelisa khatello le ho sebelisa tšireletso ea haedrojene kapa boemo ba vacuum ka mocheso o phahameng hanyane ho feta mocheso oa eutectic.Boima ba khatello bo ka fetoloa kapa mocheso oa ho lokisa o ka eketsoa ho ea ka boemo ba ho lokisa sehlahisoa, empa mocheso oa ho lokisa ha oa lokela ho ba o phahameng ho feta mocheso oa pele oa sintering oa sehlahisoa.