Ukuqonda Ubuchwepheshe Be-PDC Bits
1) Izici zesakhiwo se-PDC drill bits
Izingxenye zokugaya ze-PDC zakhiwe umzimba drill bit, PDC ukusika amazinyo kanye nozzles. Zihlukaniswe zibe uchungechunge olubili: umzimba wensimbi nomzimba we-matrix ngokwezakhiwo ezahlukene kanye nezinqubo zokukhiqiza. Wonke umzimba omncane we-PDC drill bit eqinile wenziwe ngensimbi ye-carbon steel ephakathi futhi icutshungulwa kusetshenziswa izinqubo zokukhiqiza imishini. Geza izimbobo endaweni yokusebenza ye-drill bit futhi ubophe amazinyo okusika e-PDC kumqhele webhithi yokubhoboza ngokulingana kokucindezela. Umqhele we-drill bit uphathwa ngenqubo yokuqina kwendawo (ukufafaza ungqimba olumelana nokugqoka kwe-tungsten carbide, carburizing, njll.) ukuze kuthuthukiswe ukumelana kwayo nokuguguleka. Inzuzo enkulu yalokhu mshini wokubhoboza ukuthi inqubo yokukhiqiza ilula; okubi ukuthi i-drill bit body ayimelani nokuguguleka futhi amazinyo okusika anzima ukuwavikela, ngakho-ke okwamanje akuvamile ukusetshenziswa. Ingxenye engaphezulu ye-drill bit body ye-matrix PDC drill bit ingumzimba wensimbi, futhi ingxenye engezansi iyi-matrix ye-tungsten carbide wear-resistant alloy, ekhiqizwa futhi yakhiwe kusetshenziswa inqubo ye-powder metallurgy sintering. Sebenzisa i-solder enezinga lokushisa eliphansi ukushisela amazinyo okusika e-PDC emiseleni ebekiwe esidunjini. I-tungsten carbide matrix inobulukhuni obuphezulu futhi imelana nokuguguleka. Ngakho-ke, i-matrix PDC drill bit inempilo ende kanye nevidiyo ephezulu, futhi okwamanje isetshenziswa kabanzi.
2) Umgomo wokusebenza we-PDC drill bit
I-PDC drill bits iphula amadwala ngokusika. Amazinyo okuzisika angakwazi ukusika kalula ekubunjweni ngaphansi kwesenzo sokucindezela kokumba, futhi aqhubekele phambili ukugunda idwala ngaphansi kwesenzo se-torque. Amazinyo okusika ama-PDC amaningi asebenza ngesikhathi esisodwa, futhi idwala elingaphansi komthombo linezindawo eziningi ezikhululekile, futhi idwala liphuka kalula ngaphansi kwe-shear, ngakho-ke ukusebenza kahle kokuphuka kwamadwala kuphezulu futhi isivinini sokubhola siyashesha.
3) Ukusetshenziswa okulungile kwamabhithi e-PDC
Izingcezu zokubhola ze-PDC zisebenza kahle kakhulu ezigabeni ezinkulu zokwakheka okuthambile okulinganayo ukuya kokuqinile okumaphakathi. Ayilungele ukumba izingqimba zamatshe kanye nezigaba ezithambile neziqinile. Ukusebenzisa ukucindezela okuphansi kokumba, isivinini esikhulu kanye nokubhoboza okukhulu kokuthutha, i-drill bit inomphumela omuhle.
Ngaphambi kokuba i-drill bit ingene emthonjeni, phansi komthombo kufanele kuhlanzeke ukuze kuqinisekiswe ukuthi azikho izinto zensimbi eziwayo.
Lapho i-drill bit yehliswa okokuqala emthonjeni, ukucindezela okuncane kokumba kanye nesivinini esiphansi sokujikeleza kufanele kusetshenziselwe ukugijima i-drill bit, futhi ukubhoboza okuvamile kufanele kuqalwe kabusha ngemva kokuba phansi komthombo kwakhiwa. I-PDC drill bit iwumshini wokubhoboza obalulekile ongenazo izingxenye ezihambayo futhi ifanele ukubhoboza i-turbine enesivinini esikhulu.
Lapho ukhetha i-aumzimba wensimbi PDC drill izingcezu, kunezici ezimbalwa okufanele zicatshangelwe ukuze kuqinisekiswe ukusebenza kahle. Okokuqala, kubalulekile ukuhlola izimo ezithile zokumba kanye nezici zokubunjwa ukuze kutholwe umklamo ofanelekile webhithi lokubhola kanye nezici. Izinto ezifana nohlobo lokubunjwa, ukujula kokubhola kanye nesivinini sokumba esidingekayo kuzoba nomthelela ekukhethweni kwebhilidi lensimbi elifanele le-PDC lokubhoboza umsebenzi.
Ukwengeza, kubalulekile ukucabangela ukucushwa kwamathuluzi kanye nekhwalithi lapho ukhetha i-steel-bodiedIzingxenye zokugaya ze-PDC. Ukubekwa kanye nobukhulu bamathuluzi okusika kudlala indima ebalulekile ekunqumeni ukusebenza kahle kokusika kanye nokuqina kwe-drill. Amathuluzi okusika ekhwalithi ephezulu asebenzisa ubuchwepheshe obuthuthukisiwe be-PDC angathuthukisa ukusebenza kwawo wonke kanye nempilo yesevisi ye-drill bit, akwenze kube ukutshalwa kwezimali okubalulekile kumaphrojekthi okumba wesikhathi eside.
Ngaphezu kwalokho, ukuklanywa komsebenzi we-hydraulic we-drill bit ayikwazi ukushaywa indiva. Uhlelo olusebenzayo lwe-hydraulic lubalulekile ekugcineni izakhiwo zokusika zihlanzekile futhi zipholile, ikakhulukazi ezimeni zokumba eziyinselele. Isistimu ye-hydraulic eklanywe kahle isiza ukuvimbela i-bit pelletizing futhi iqinisekisa ukususwa okuphumelelayo kokusikwa, okusiza ukuthuthukisa ukusebenza kokumba nokuphila kancane.
Ngamafuphi, ngokucabangela izidingo ezithile zokumba nokukhetha izingcezu zensimbi zokubhola ze-PDC ezinomklamo nezici ezifanele, ochwepheshe bokubhola bangakwazi ukukhulisa ukusebenza kahle kokumba futhi bathole imiphumela ephakeme ekubunjweni okuyinselele.