U tseba hakae ka PDC sehang?

Mabapi le PDC (Polycrystalline Diamond Compact) Cutter

PDC (Polycrystalline Diamond Compact) Cutter ke mofuta o thata haholothepa e kopanyang daemane ea polycrystalline le substrate ea tungsten carbide ka mocheso o phahameng haholo le khatello.

Ho qaptjoa ha mochine oa PDC ho ile ha etsa hore hosekoahelo se tsitsitsengho ea pele indastering ea ho cheka, 'me khopolo eo hang-hang ea tuma. Ho tloha kaho kutaketso ea li-cutters tsa PDC e sebetsa ho feta ketso e sithabetsang ea konopo kapa leino le nang le meno, li-cutters tse tsitsitseng- hanyaneli batloang haholo.

Ka 1982, likotoana tsa ho phunya PDC li ne li etsa karolo ea 2% feela ea maoto a phuntsoeng. Ka 2010, karolo ea 65% ea sebaka sohle se chekiloeng se ile sa hlahisoa ke PDC.

Li-Cutter tsa PDC li etsoa joang? 

PDC Cutters e entsoe ka tungsten carbide substrate le synthetic diamond grit. E entsoe ho sebelisoa motsoako oa mocheso o phahameng le khatello e phahameng e nang le motsoako oa cobalt alloy ho thusa daemane le carbide nakong ea ts'ebetso ea sintering. Nakong ea ho pholisa, tungsten carbide e honyela ka lebelo la makhetlo a 2,5 ho feta daemane, e kopanyang Diamond le Tungsten Carbide hammoho ebe ka mor'a moo e theha PDC Cutter.

Litšobotsi le Lisebelisoa

Kaha PDC Cutters e na le grit ea daemane le substrate ea tungsten carbide, e kopanya melemo ea daemane le tungsten carbide.： 

1. He thibang mahlaba

2. He hanana le tšusumetso

3. Hsetala sa mocheso o phahameng

Hona joale PDC Cutters e sebelisoa haholo ho cheka sebakeng sa oli, ho hlahloba khase le jeoloji, meepo ea mashala, le lisebelisoa tse ling tse ngata tsa ho cheka le ho sila, lisebelisoa tse kang PDC Drill Bits, tse kang Steel PDC Drill Bits & Matrix PDC Drill Bits bakeng sa ho cheka oli le Tri-cone PDC Drill Bits bakeng sa merafo ea mashala.

Mefokolo

Tšenyo ea phello, ts'enyehelo ea mocheso, le ho roala ha makukuno kaofela li sitisa tšebetso ea boro 'me li ka etsahala esita le maemong a bonolo ka ho fetisisa a jeoloji. Leha ho le joalo, mokhoa o thata ka ho fetisisa oa ho phunya PDC ke o senyang haholo.

E kholo VS sehahi se senyane

Ka kakaretso, li-cutters tse kholo (19mm ho 25mm) li mabifi ho feta li-cutters tse nyenyane. Leha ho le joalo, li ka eketsa ho feto-fetoha ha torque. Ho feta moo, haeba BHA ha ea etsetsoa ho sebetsana le ho ba mabifi, ho ka baka ho se tsitse.

Li-cutters tse nyane (8mm, 10mm, 13mm, le 16mm) li bonts'itsoe li cheka ho ROP e phahameng ho feta li-cutters tse kholo lits'ebetsong tse itseng. Tšebeliso e 'ngoe e joalo ke mokoetla.
Hape, li-bits li entsoe ka li-cutters tse nyane empa tse ngata tsa tsona li ka mamella tšusumetso e phahameng loading. 

Ho feta moo, li-cuttings tse nyane li hlahisa li-cuttings tse nyane ha li-cuttings tse kholo li hlahisa li-cuttings tse kholoanyane. Li-cuttings tse kholo li ka baka mathata a ho hloekisa masoba haeba mokelikeli oa ho cheka o sitoa ho jara li-cuttings ho ea fihla annulus.

sebopeho sa sehahi

Sebopeho se tloaelehileng ka ho fetisisa sa PDC ke cylinder, karolo e 'ngoe hobane li-cutter tsa cylindrical li ka hlophisoa habonolo ka har'a tšitiso ea profil e fanoeng ho fihlela li-cutter tse kholo. Mechini e ntšang terata ea elektrone e ka khaola le ho theha litafole tsa daemane tsa PDC ka nepo. Khokahano e seng ea moralo lipakeng tsa tafole ea daemane le substrate e fokotsa khatello ea maikutlo. Likarolo tsena li ntlafatsa ho hanyetsa ho chefo, spalling le delamination ea litaemane. Meralo e meng ea li-interface e eketsa khatello ea maikutlo ka ho fokotsa maemo a setseng a khatello ea maikutlo.