Inqubo yokukhiqiza kanye nenqubo yokubumba yenduku ye-carbide enosimende

Iinduku ye-carbide enosimendeiyinduku eyindilinga ye-carbide enosimende, eyaziwa nangokuthi induku yensimbi ye-tungsten, ngamafuphi, induku eyindingilizi yensimbi ye-tungsten noma induku yelungu le-carbide enosimende. I-carbide enosimende iyinhlanganisela eyenziwe ngezinhlanganisela zensimbi eziphikisayo (isigaba esiqinile) kanye nensimbi eboshiwe (isigaba sokubopha) ekhiqizwa i-powder metallurgy. I-Tungsten carbide yaziwa nangokuthi i-tungsten steel, uma kuqhathaniswa, igama lendawo lehlukile.

Kunezindlela ezimbili zokwenza ukukhiqizwa kwezinduku eziyindilinga ze-carbide ezinosimende: enye i-extrusion molding, futhi ukubunjwa kwe-extrusion kuyindlela efanelekile yokukhiqiza izinduku ezinde. Ingancishiswa ibe yinoma ibuphi ubude obufiswa umsebenzisi ngesikhathi senqubo ye-extrusion. Nokho, ubude bubonke abunakudlula u-350mm. Enye i-die molding, okuyindlela efanelekile yokukhiqiza impahla yebha emifushane. Njengoba igama liphakamisa, i-carbide powder icindezelwa ukuze ibumbe ngesikhunta. Izinhlanganisela eziqinile nezinsimbi eziboshiwe ezenziwe ngezinsimbi eziphikisayo aziguquki emazingeni okushisa angu-500°C ngenqubo ye-powder metallurgy, futhi zisenokuqina okuphezulu ku-1000°C. I-Tungsten carbide isetshenziswa kabanzi ekugqwaleni kanye nochungechunge lwezakhiwo ezinhle kakhulu, ikakhulukazi ubulukhuni bayo obuphezulu nokumelana nokugqokwa, ngisho nasezintweni zamathuluzi, njengamathuluzi okuguqula, amathuluzi okugaya, amathuluzi okusika, izinsimbi, imimese, njll. insimbi, izinsimbi ezingezona ayoni, amapulasitiki, imicu yamakhemikhali, igraphite, ingilazi, itshe nensimbi evamile. Ingase futhi isetshenziselwe ukusika isigayo, ikhabethe okomisa, i-Z mixer, umshini we-pelletizing) -- ukucindezela (ngokucindezela ohlangothini lwe-hydraulic press noma umshini we-extrusion) -- ukushisa insimbi ekwazi ukumelana nokushisa, insimbi engagqwali, insimbi ephezulu yemanganese, insimbi yamathuluzi nokunye okunzima. izinto zokugaya ezimanzi (isithando somlilo, isithando somlilo esihlanganisiwe noma isithando somlilo esiphansi se-HIP).

Izinto ezingavuthiwe ziwumhlabathi omanzi, zomisiwe, zixutshwe neglue ngemva kokumataniswa, bese zomiswa ngehholo lokukhunta noma zikhishwe ukuze kukhululeke ukucindezeleka, futhi ekugcineni zakhiwe ngokususa amafutha kanye nokucwiliswa ukuze kwakhiwe i-alloy yokugcina eyi-gross gross round bar material. Ukuncinza izinhlangothi zombili kuzomosha into ethile. Uma ubude be-tungsten carbide encane enobubanzi obuyindilinga bentonga, ububi bokukhiqizwa kwe-extrusion yentonga eyindilinga ukuthi umjikelezo wokukhiqiza mude. Khipha u-3mm ngaphansi kokugaya okuyisilinda ukuze uthuthukise ukuhambisana komonakalo woboya. Yiqiniso, izinkinga zokuqondisa nokujikeleza zingathuthukiswa ngokugaya kwe-cylindrical esigabeni sakamuva.

Okunye ukubunjwa kwesikhunta, okuyindlela yokukhiqiza induku emfushane, njengoba igama libonisa, isikhunta sizocindezela i-carbide powder enosimende ukuze yakhe. Izinzuzo zale ndlela yokubumba ibha ye-carbide enosimende: enye ingabunjwa ngesikhathi, okuyindlela yokukhiqiza ibha emifushane. Njengoba igama liphakamisa, iyabumba, inciphisa imfucuza. Lula inqubo yokusika umugqa futhi ulondoloze umjikelezo wezinto ezomile wendlela ye-extrusion. Isikhathi esifushane esingenhla singalondoloza izinsuku ezingu-7-10 kumakhasimende.

Ukukhuluma ngokuqinile, ukucindezela kwe-isostatic nakho kuwukwenza ukufa. Ukucindezela kwe-Isostatic kuyindlela ekahle kakhulu yokwenza ukukhiqizwa kwezinduku eziyindilinga ezinkulu nezinde zikasimende ze-carbide. Ngokusebenzisa uphawu lwe-piston olungaphezulu nangaphansi, ipompo yokucindezela izojova i-liquid medium phakathi kwesilinda somfutho ophezulu kanye nerabha yokucindezela, ngokusebenzisa irabha yokucindezela izodlulisela amandla ehholo ukwenza ukubumba kwengcindezi ye-carbide powder enosimende.