① Ukuqina okuphezulu: Ithuluzi le-carbide elihlanganisiwe lenziwe nge-carbide enobulukhuni obuphezulu nendawo encibilikayo (ebizwa ngokuthi isigaba esinzima) kanye ne-metal binder (ebizwa ngokuthi isigaba se-bonding) ngendlela ye-powder metallurgy, ukuqina kwayo kufinyelela ku-89 ~ 93HRA, ephakeme kakhulu kunensimbi enesivinini esikhulu, ku-5400C, ubulukhuni busengafinyelela ku-82 ~ 87HRA, nokuqina kwensimbi ngesivinini esiphezulu ekamelweni lokushisa (83 ~ 86HRA) okufanayo.Inani lobulukhuni be-carbide enosimende liyahlukahluka kuye ngohlobo, ubuningi, usayizi wezinhlayiyana nokuqukethwe kwesigaba sokubopha insimbi, futhi ngokuvamile liyehla ngokunyuka kokuqukethwe kwesigaba sensimbi sokubopha.Ukuqina kwengxubevange ye-YT kungaphezu kobengxube ye-YG uma okuqukethwe kwesigaba sokubopha kuyafana, futhi ingxubevange ene-TaC(NbC) inokuqina okuphezulu kwezinga lokushisa.
② Amandla okugoba nokuqina: amandla okugoba e-carbide enosimende evame ukusetshenziswa akububanzi obungu-900 ~ 1500MPa.Ukuphakama kokuqukethwe kwesigaba sokubopha insimbi, kuyanda amandla okugoba.Uma okuqukethwe kokunamathela kufana, amandla engxubevange ye-YG (WC-Co) aphezulu kunalawo e-YT (WC-TiC-Co) alloy, futhi amandla ayancipha ngokunyuka kokuqukethwe kwe-TiC.I-Tungsten carbide iyimpahla ephukayo, futhi ukuqina kwayo komthelela ekushiseni kwegumbi kungu-1/30 kuphela kuya ku-1/8 wensimbi enesivinini esikhulu.
(3) Ukusetshenziswa kwethuluzi le-carbide elisetshenziswa kakhulu
Ama-alloys e-YG asetshenziswa kakhulu ekucubunguleni i-iron cast, izinsimbi ezingenayo insimbi nezinto ezingezona ezensimbi.I-fine-grain carbide (efana ne-YG3X, YG6X) ngenani elifanayo le-cobalt kunokuqina okusanhlamvu nokumelana nokugqokwa iphakeme, ifanele ukucubungula insimbi ekhethekile eqinile, insimbi engagqwali ye-austenitic, ingxubevange engashisi, ingxubevange ye-titanium, ithusi eliqinile. nezinto zokuvikela ezingagugi.
Izinzuzo ezivelele ze-YT class cemented carbide ubulukhuni obukhulu, ukumelana nokushisa okuhle, ubulukhuni bokushisa okuphezulu namandla acindezelayo kunesigaba se-YG, ukumelana okuhle kwe-oxidation.Ngakho-ke, lapho ummese udingeka ukuthi ube nokumelana nokushisa okuphezulu nokumelana nokugqokwa, uhlobo olunokuqukethwe okuphezulu kwe-TiC kufanele kukhethwe.Ingxubevange ye-YT ifanele ukucubungula izinto zepulasitiki ezifana nensimbi, kodwa ayifanele ukucubungula i-titanium alloy, i-silicon aluminium alloy.
Ama-alloys e-YW anezakhiwo ze-YG ne-YT alloys, futhi anezakhiwo ezinhle ezihlanganisayo.Ingasetshenziselwa ukucubungula insimbi, insimbi ekhonjiwe kanye nezinsimbi ezingenayo insimbi.Ama-alloys anjalo, uma okuqukethwe kwe-cobalt akhuphuka kahle, angaba namandla kakhulu futhi angasetshenziselwa ukusika ama-machining kanye nokusika ngezikhathi ezithile zezinto ezihlukahlukene ezinzima.
Isikhathi sokuthumela: Dec-04-2023