Thermally Stable Polycrystalline Diamond Bit Cutter

Thermally tsitsitseng polycrystalline litaemane li-cutters li ile tsa hlahisoa ha ho fumanoa hore li-cutters tsa PDC ka linako tse ling li ne li phunngoa nakong ea ho cheka. Ho hloleha hona ho bile teng ka lebaka la likhatello tsa ka hare tse bakoang ke katoloso e fapaneng ea thepa ea daemane le e kopanyang.

Cobalt ke setlamo se sebelisoang haholo ho fetisisa lihlahisoa tsa PCD tse sirelelitsoeng. Sesebelisoa sena se na le coefficient ea mocheso ea katoloso ea 1.2 x 10 ^-5 deg. C bapisoa le 2.7 x 10 ^-6 bakeng sa taemane. Ka hona cobalt e hola ka potlako ho feta daemane. Ha mocheso o mongata oa seha o phahama ka holimo ho 730 deg C likhatello tsa ka hare tse bakoang ke litekanyetso tse fapaneng tsa ho atolosa ho lebisa ho phunyeha ho matla ha li-intergranular, macro chipping, le ho hlōleha ka potlako ha sehahi.

Lithempereichara tsena li phahame haholo ho feta lithempereichara tse ka fumanoang ka tlaase ho sekoti (ka tloaelo 100 deg C ho 8000 ft). Li hlaha ho tsoa ho khohlano e hlahisoang ke ketso ea ho kuta eo ka eona likotoana tsena li sehang lejoe.

Tšitiso ena ea mocheso ea 730 deg C e hlahisitse litšitiso tse tebileng bakeng sa ts'ebetso e ntlafetseng ea li-PCD cutter bits.

Baetsi ba ile ba etsa liteko tsa ho ntlafatsa botsitso ba mocheso oa li-cutters le li-cutters tse tsitsitseng tsa daemane tsa polycrystalline tse tsitsitseng.

Li-bits cutters tsena li tsitsitse haholoanyane mochesong o phahameng hobane cobalt binder e tlositsoe 'me sena se felisa khatello ea kelello e ka hare e bakoang ke ho atolosoa ha phapang. Kaha boholo ba li-binder li hokahane, phekolo e atolositsoeng ka li-acids e ka ntša boholo ba eona. Maqhama pakeng tsa likaroloana tsa daemane tse haufi ha a amehe, a boloka 50-80% ea matla a li-compact. Leached PCD e tsitsitse ka mocheso sebakeng sa inert kapa se fokotsa maemo a leholimo ho 1200 deg C empa e tla theola ho 875 deg C boteng ba oksijene.

Ho ile ha pakoa hore haeba thepa ea cobalt e ka tlosoa lekhalong la lijo-thollo, botsitso ba mocheso oa meno a PDC bo tla ntlafatsoa haholo e le hore sekoti se ka phunya hantle ka mekhoa e thata le e thata haholoanyane. Theknoloji ena ea ho tlosa cobalt e ntlafatsa khanyetso ea meno ea PDC ka har'a mafika a thata a thata haholo 'me e atolosa le ho feta mefuta e mengata ea lisebelisoa tsa PDC.

Bakeng sa tlhaiso-leseling e batsi ka li-cutters tsa PDC, amohela ho re etela ho www.zzbetter.com