Lefatšeng la ho cheka, phetoho ea li-cutter tsa PDC (polycrystalline daemane compact) e bile phetoho e kholo indastering ea oli le khase. Ho theosa le lilemo, li-cutter tsa PDC li bile le liphetoho tse kholo moralong le ts'ebetsong, li ntlafatsa ts'ebetso ea tsona le ho atolosa nako ea tsona ea bophelo.
Qalong, disehi tsa PDC di ne di etseditswe ho fana ka mokhoa o mong o tshwarellang le o sebetsang hantle ho feta disehi tsa tungsten carbide tsa setso. Di ile tsa hlahiswa ka lekgetlo la pele dilemong tsa bo-1970 mme tsa tuma kapele ka lebaka la bokgoni ba tsona ba ho mamella dithempereichara tse phahameng le dikgatello ditshebedisong tse tebileng tsa ho tjheka. Leha ho le jwalo, disehi tsa pele tsa PDC di ne di lekanyeditswe ke tlhaho ya tsona ya ho robeha habonolo mme di ne di sekametse ho kgaoheng le ho robeheng.
Ha theknoloji e ntse e tswela pele, bahlahisi ba ile ba qala ho leka thepa le meralo e mecha ho ntlafatsa tshebetso ya disehi tsa PDC. E nngwe ya diphetoho tsa bohlokwa ka ho fetisisa e bile ho kenngwa ha disehi tsa polycrystalline daemane (TSP) tse tsitsitseng mochesong. Disehi tsena di ne di ena le lera la daemane le matla mme di ne di ka mamella mocheso le kgatello e phahameng ho feta disehi tsa PDC tsa setso.
Tšimoloho e 'ngoe e kholo theknolojing ea ho seha ea PDC e bile ho hlahisoa ha li-cutter tse tsoakiloeng. Li-cutter tsena li kopantse ho tšoarella ha PDC le ho tiea ha tungsten carbide ho etsa sesebelisoa sa ho seha se ka sebetsanang le lits'ebetso tse thata ka ho fetisisa tsa ho cheka.
Lilemong tsa morao tjena, tsoelo-pele mahlaleng a tlhahiso e lumelletse ho thehoa ha li-geometri tse rarahaneng ho li-cutter tsa PDC. Sena se lebisitse nts'etsopele ea li-cutter tse khethehileng tse etselitsoeng lits'ebetso tse ikhethileng tsa ho cheka, joalo ka ho cheka ka tsela e tobileng le ho cheka ka khatello e phahameng/mocheso o phahameng.
Phetoho ea li-cutter tsa PDC e bile le tšusumetso e kholo indastering ea oli le khase. Ka bokhoni ba tsona ba ho mamella maemo a feteletseng le ho nka nako e telele ho feta lisebelisoa tsa setso tsa ho seha, li-cutter tsa PDC li ekelitse bokhoni ba ho cheka le ho fokotsa nako ea ho sebetsa. Ha theknoloji ea ho cheka e ntse e tsoela pele, ho ka etsahala hore re bone tsoelo-pele e eketsehileng moralong le ts'ebetsong ea li-cutter tsa PDC.
Qetellong, li-cutter tsa PDC li tsamaile hole ho tloha ha li hlahisoa lilemong tsa bo-1970. Ho tloha matsatsing a tsona a pele e le mokhoa o tšoarellang ho feta li-insert tsa tungsten carbide, ho ea nts'etsopele ea li-cutter tse khethehileng tse etselitsoeng lits'ebetso tse ikhethileng tsa ho cheka, phetoho ea li-cutter tsa PDC e bile ntho e ikhethang. Ha indasteri ea oli le khase e ntse e tsoela pele ho fetoha, li-cutter tsa PDC ntle ho pelaelo li tla bapala karolo ea bohlokoa ho khanneng katleho le tlhahiso ts'ebetsong ea ho cheka.
Nako ea poso: Hlakubele-04-2023
