I-PDC, noma i-polycrystalline diamond compact, izisiki ziye zaba yinto eshintsha kakhulu embonini yokubhoboza. La mathuluzi okusika ashintshe ubuchwepheshe bokubhoboza ngokwandisa ukusebenza kahle nokunciphisa izindleko. Kodwa izisiki ze-PDC zivelaphi, futhi zathandwa kanjani kangaka?
Umlando wabasiki be-PDC uqala emuva ngawo-1950 lapho amadayimane okwenziwa eqala ukwakhiwa. Lawa madayimane akhiqizwa ngokufaka i-graphite ngaphansi kokucindezeleka okuphezulu kanye namazinga okushisa, okwadala into eqinile kunedayimane yemvelo. Amadayimane okwenziwa asheshe athandwa ezisetshenziswa ezimbonini, okuhlanganisa nokubhoboza.
Kodwa-ke, ukusebenzisa amadayimane okwenziwa ekubholeni kwakuyinselele. Amadayimane ayevame ukuphuka noma ukuphuma ethuluzini, okunciphisa ukusebenza kahle kwalo futhi kudingeke ukushintshwa njalo. Ukuze kuxazululwe le nkinga, abacwaningi baqala ukuzama ukuhlanganisa amadayimane okwenziwa nezinye izinto, njenge-tungsten carbide, ukuze bakhe ithuluzi lokusika elihlala isikhathi eside nelisebenza kahle.
Ngawo-1970, kwasungulwa izisiki zokuqala ze-PDC, ezakhiwa ungqimba lwedayimane oluhlanganiswe ne-tungsten carbide substrate. Laba basisiki baqale basetshenziswa embonini yezimayini, kodwa izinzuzo zabo zabonakala ngokushesha ekusetshenzisweni kokumba uwoyela negesi. Izisiki ze-PDC zazinikeza ukumba okusheshayo nokusebenza kahle, zinciphisa izindleko futhi zandisa umkhiqizo.
Njengoba ubuchwepheshe buthuthuka, abasiki be-PDC baba ngcono kakhulu, ngemiklamo emisha nezinto zokwakha ezandisa ukuqina kwazo kanye nokuguquguquka kwazo. Namuhla, abasiki be-PDC basetshenziswa ezinhlobonhlobo zezicelo zokubhoboza, okuhlanganisa ukubhoboza komhlaba, ukumbiwa kwemigodi, ukwakhiwa, nokuningi.
Ukusetshenziswa kwezisiki ze-PDC kuholele nasekuthuthukisweni kwamasu okubhoboza, njengokubhoboza okuvundlile kanye nokubhoboza okuqondiswe ngqo. Lawa masu enziwe aba nokwenzeka ngenxa yokusebenza kahle nokuqina okwandisiwe kwezisiki ze-PDC, okuvumela ukubhoboza okunembe kakhulu nokulawulwayo.
Ekuphetheni, abasiki be-PDC banomlando ocebile osukela ekuthuthukisweni kwamadayimane okwenziwa ngawo-1950. Ukuthuthuka kwabo kanye nentuthuko kuholele ekuthuthukisweni okukhulu kobuchwepheshe bokubhoboza, ukuthuthukisa ukusebenza kahle, ukunciphisa izindleko, kanye nokwandisa ububanzi bezicelo. Njengoba isidingo sokubhoboza okusheshayo nokusebenza kahle siqhubeka nokukhula, kusobala ukuthi abasiki be-PDC bazohlala beyingxenye ebalulekile embonini yokubhoboza.
Isikhathi sokuthunyelwe: Mashi-04-2023
