Emhlabeni wokumba, ukuvela kwabasiki be-PDC (i-polycrystalline diamond compact) kube wushintsho embonini kawoyela negesi. Ngokuhamba kweminyaka, abasiki be-PDC baye baba nezinguquko eziphawulekayo ekuklanyweni nasekusebenzeni, bathuthukisa ukusebenza kwabo futhi banweba isikhathi sabo sokuphila.
Ekuqaleni, abasiki be-PDC babeklanyelwe ukuhlinzeka ngenye indlela ehlala isikhathi eside futhi ephumelelayo yokufaka kwendabuko ye-tungsten carbide. Zaqala ukwethulwa ngawo-1970 futhi zathola ukuthandwa ngokushesha ngenxa yekhono lazo lokumelana nezinga lokushisa eliphezulu nezingcindezi ekusetshenzisweni kokumba okujulile. Kodwa-ke, abasiki be-PDC bokuqala babenqunyelwe imvelo yabo ebuthakathaka futhi bejwayele ukucwiliswa nokuphuka.
Njengoba ubuchwepheshe buthuthuka, abakhiqizi baqala ukuzama izinto ezintsha nemiklamo ukuthuthukisa ukusebenza kwabasiki be-PDC. Enye yezinto ezibaluleke kakhulu ukwethulwa kwabasiki bedayimane be-polycrystalline (TSP) abazinzile. Lezi zisiki zifake ungqimba lwedayimane oluqine kakhulu futhi zingamelana namazinga okushisa aphezulu nezingcindezi kunabasiki bendabuko be-PDC.
Enye impumelelo enkulu kubuchwepheshe bokusika i-PDC kwaba ukwethulwa kwabasiki be-hybrid. Laba basiki bahlanganisa ukuqina kwe-PDC nokuqina kwe-tungsten carbide ukuze bakhe ithuluzi lokusika elikwazi ukubhekana nezinhlelo zokusebenza zokumba eziyinselele kakhulu.
Eminyakeni yamuva nje, intuthuko kumasu okukhiqiza ivumele ukwakhiwa kwamajiyometri ayinkimbinkimbi kubasiki bePDC. Lokhu kuye kwaholela ekuthuthukisweni kwama-cutters akhethekile aklanyelwe izinhlelo zokusebenza ezithile zokumba, njengokumba okuqondisayo kanye nokubhola okunomfutho ophezulu/ukushisa okuphezulu.
Ukuvela kwabasiki be-PDC kube nomthelela omkhulu embonini kawoyela negesi. Ngokukwazi kwabo ukumelana nezimo ezimbi kakhulu futhi kuhlala isikhathi eside kunamathuluzi okusika endabuko, abasiki be-PDC baye bandisa ukusebenza kahle kokumba futhi banciphisa isikhathi sokuphumula. Njengoba ubuchwepheshe bokumba buqhubeka buthuthuka, kungenzeka ukuthi sizobona intuthuko ekwakhiweni kwe-PDC cutter kanye nokusebenza.
Sengiphetha, abasiki be-PDC sebehambe ibanga elide kusukela bethulwa ngawo-1970. Kusukela ezinsukwini zabo zakuqala njengenye indlela eqinile yokufaka i-tungsten carbide, kuya ekuthuthukisweni kwabasiki abakhethekile abaklanyelwe izinhlelo ezithile zokumba, ukuvela kwabasiki be-PDC bekuyinto emangalisayo. Njengoba imboni kawoyela negesi iqhubeka nokuvela, abasiki be-PDC ngokungangabazeki bazodlala indima ebalulekile ekuqhubekiseni ukusebenza kahle nasekukhiqizeni emisebenzini yokumba.
Isikhathi sokuthumela: Mar-04-2023
