Izinto zamathuluzi e-alloy zenziwe nge-carbide (ebizwa ngokuthi isigaba esiqinile) kanye nensimbi (ebizwa ngokuthi isigaba se-binder) enobunzima obukhulu kanye nendawo yokuncibilika ngokusebenzisa i-powder metallurgy. Lapho izinto zamathuluzi e-alloy carbide ezisetshenziswa kakhulu zine-WC, TiC, TaC, NbC, njll., izinto zokubopha ezisetshenziswa kakhulu yi-Co, i-titanium carbide-based binder yi-Mo, Ni.
Izakhiwo zomzimba nezemishini zezinto zethuluzi le-alloy zincike ekwakhiweni kwe-alloy, ukujiya kwezinhlayiya zempuphu kanye nenqubo yokusila kwe-alloy. Uma izigaba ziqinile kakhulu ezinobunzima obuphezulu kanye nendawo yokuncibilika ephezulu, kulapho ukuqina nokuqina kokushisa okuphezulu kwethuluzi le-alloy kukhuphuka khona. Uma i-binder inamandla amaningi, kulapho amandla aphezulu khona. Ukwengezwa kwe-TaC ne-NbC ku-alloy kuzuzisa ukucwenga okusanhlamvu nokuthuthukisa ukumelana nokushisa kwe-alloy. I-carbide esetshenziswa kakhulu ehlanganisiwe iqukethe inani elikhulu le-WC ne-TiC, ngakho-ke ubunzima, ukumelana nokuguguleka kanye nokumelana. Ukumelana nokushisa kuphakeme kunokwensimbi yethuluzi, ubunzima ekushiseni kwegumbi bungu-89~94HRA, kanti ukumelana nokushisa kungama-degrees angu-80~1000.
Isikhathi sokuthunyelwe: Septhemba-01-2021
