Ezweni lokubhoboza, ukuvela kwezicucu ze-PDC (polycrystalline diamond compact) kube yinto eshintsha kakhulu embonini kawoyela negesi. Eminyakeni edlule, izicucu ze-PDC ziye zashintsha kakhulu ekwakhiweni nasekusebenzeni kwazo, zathuthukisa ukusebenza kwazo futhi zandisa isikhathi sazo sokuphila.
Ekuqaleni, izisiki ze-PDC zaklanywa ukuze zinikeze okunye okuhlala isikhathi eside futhi okusebenzayo kunezisiki ze-tungsten carbide zendabuko. Zethulwa okokuqala ngawo-1970 futhi zasheshe zathandwa ngenxa yekhono lazo lokubekezelela amazinga okushisa aphezulu kanye nezingcindezi ekusetshenzisweni kokubhoboza okujulile. Kodwa-ke, izisiki ze-PDC zakuqala zazinqunyelwe yimvelo yazo yokuqhekeka futhi zazivame ukuqhekeka nokuphuka.
Njengoba ubuchwepheshe buthuthuka, abakhiqizi baqala ukuzama izinto ezintsha kanye nemiklamo yokuthuthukisa ukusebenza kwabasiki be-PDC. Enye yentuthuko ebaluleke kakhulu kwaba ukwethulwa kwabasiki be-polycrystalline diamond (TSP) abazinzile ngokushisa. Labasiki babenesendlalelo sedayimane esiqinile futhi babekwazi ukumelana namazinga okushisa aphezulu kanye nokucindezeleka kunebasiki be-PDC bendabuko.
Enye intuthuko enkulu kubuchwepheshe bokusika be-PDC kwaba ukwethula abasiki be-hybrid. Laba basiki bahlanganisa ukuqina kwe-PDC nokuqina kwe-tungsten carbide ukuze bakhe ithuluzi lokusika elingasingatha ngisho nezinhlelo zokusebenza zokubhoboza eziyinselele kakhulu.
Eminyakeni yamuva nje, intuthuko kwezobuchwepheshe bokukhiqiza ivumele ukudalwa kwejiyometri eziyinkimbinkimbi kubasiki be-PDC. Lokhu kuholele ekuthuthukisweni kwabasiki abakhethekile abaklanyelwe izinhlelo ezithile zokubhoboza, njengokubhoboza okuqondiswayo kanye nokubhoboza ngomfutho ophezulu/ngokushisa okuphezulu.
Ukuthuthuka kwemishini yokusika ye-PDC kube nomthelela omkhulu embonini kawoyela negesi. Ngenxa yekhono layo lokubekezelela izimo ezimbi kakhulu futhi lihlale isikhathi eside kunamathuluzi okusika endabuko, imishini yokusika ye-PDC ikhulise ukusebenza kahle kokumba futhi yehlisa isikhathi sokungasebenzi. Njengoba ubuchwepheshe bokumba buqhubeka nokuthuthuka, kungenzeka ukuthi sizobona intuthuko eyengeziwe ekwakhiweni nasekusebenzeni kwemishini yokusika ye-PDC.
Ekuphetheni, abasiki be-PDC bahambe ibanga elide selokhu basungulwa ngawo-1970. Kusukela ezinsukwini zabo zokuqala njengenye indlela ehlala isikhathi eside esikhundleni se-tungsten carbide inserts, kuya ekuthuthukisweni kwabasiki abakhethekile abaklanyelwe ukusetshenziswa okuthile kokubhoboza, ukuvela kwabasiki be-PDC kube yinto emangalisayo. Njengoba imboni kawoyela negesi iqhubeka nokuthuthuka, abasiki be-PDC ngokungangabazeki bazodlala indima ebalulekile ekushayeleni ukusebenza kahle kanye nokukhiqiza emisebenzini yokubhoboza.
Isikhathi sokuthunyelwe: Mashi-04-2023
