PDC drill drill Bits Design ea kajeno e le matrix ha e tšoane haholo le ea lilemong tse 'maloa tse fetileng. Matla a tsitsipano le ho hanyetsa tšusumetso li eketsehile ka bonyane 33%, 'me matla a li-cutter brazes a eketsehile ka ≈80%. Ka nako e ts'oanang, li-geometri le thekenoloji ea meaho e tšehetsang li ntlafetse, e hlahisang lihlahisoa tse matla le tse hlahisang litholoana tsa matrix.
Lisebelisoa tsa Cutters
Li-Cutter tsa PDC li entsoe ka substrate ea carbide le grit ea daemane. Mocheso o phahameng oa likhato tse ka bang 2800 le khatello e phahameng ea hoo e ka bang 1,000,000 psi e theha compact. Alloy ea cobalt e boetse e sebetsa e le mohloli oa ts'ebetso ea sintering. Cobalt e thusa ho kopanya carbide le daemane.
Palo ea Basehang
Hangata re sebelisa li-cutters tse fokolang holim'a likotoana tse bonolo tsa PDC ha seha se seng le se seng se tlosa botebo bo boholo ba sehiloeng. Bakeng sa libopeho tse thata, ho bohlokoa ho sebelisa li-cutters tse ngata ho lefella botebo bo bonyenyane ba sehiloeng.
PDC Drill Bits - Boholo ba Cutters
Bakeng sa libopeho tse bonolo, hangata re khetha li-cutters tse kholo ho feta tse thata. Hangata, boholo bo tloaelehileng bo tloha ho 8 mm ho isa ho 19 mm ho mang kapa mang.
Ka kakaretso re hlalosa sebopeho sa moralo oa li-racks ka mokokotlo oa mokokotlo le li-angles tsa rake tsa mahlakoreng.
● The cutter back rake ke angle e hlahisoang ke sefahleho sa sehahi ho ea ho sebopeho 'me e lekanyetsoa ho tloha holimo. Li-angles tse ka morao li fapana pakeng tsa, hangata, 15 ° ho isa ho 45 °. Ha li tsitse hanyenyane, leha e le ho tloha hanyenyane ho ea ho se seng. Boholo ba "cutter rake angle" bakeng sa likotoana tsa ho cheka tsa PDC bo ama Penetration Rate (ROP) le khanyetso ea sehaho ea ho apara. Ha sekhahla sa rake se ntse se eketseha, ROP e fokotseha, empa ho hanyetsa ho apara hoa eketseha ha mojaro o sebelisitsoeng o se o hasana sebakeng se seholo haholo. Li-cutters tsa PDC tse nang le li-rake tse nyane tse ka morao li nka botebo bo boholo ba sehiloeng, ka hona li mabifi ho feta, li hlahisa Torque e phahameng, 'me li tlas'a ts'ebetso e potlakileng le kotsi e kholo ea tšenyo ea tšusumetso.
● The cutter side rake ke tekanyo e lekanang ea chebahatso ea sehaho ho tloha ho le letšehali ho ea ho le letona. Li-angles tsa mahlakoreng hangata li nyane. Karolo e ka lehlakoreng ea rake e thusa ho hloekisa lesoba ka ho tsamaisa li-cuttings ho annulus.
Nako ea poso: Aug-10-2023