PDC, kana kuti polycrystalline diamond compact, vateki vave shanduko yemutambo muindasitiri yekuchera. Aya maturusi ekucheka akashandura tekinoroji yekuchera nekuwedzera kugona uye kuderedza mitengo. Asi vacheki vePDC vakabva kupi, uye vakave vakakurumbira sei?
Nhoroondo yePDC cutters yakatanga kumakore ekuma1950 apo madhaimani ekugadzira akatanga kugadzirwa. Aya madhaimani akagadzirwa nekuisa graphite kune yakanyanya kudzvinyirirwa uye tembiricha, kugadzira zvinhu zvaive zvakaoma kupfuura dhaimondi rechisikigo. Synthetic madhaimani akakurumidza kuve akakurumbira mumaindasitiri ekushandisa, kusanganisira kuchera.
Zvisinei, kushandisa madhaimani ekugadzira mukuchera kwakanga kwakaoma. Madhaimondi aiwanzo tyora kana kubvisa kubva pachishandiso, achidzikisa kushanda kwayo uye ichida kugara ichitsiviwa. Kugadzirisa dambudziko iri, vaongorori vakatanga kuyedza kubatanidza madhaimondi ekugadzira nezvimwe zvinhu, senge tungsten carbide, kugadzira chishandiso chakasimba uye chinoshanda chekucheka.
Mumakore ekuma1970, ekutanga maPDC cutters akagadzirwa, anosanganisira dhaimondi rakasungirirwa kune tungsten carbide substrate. Aya makucheka akatanga kushandiswa muindasitiri yezvicherwa, asi mabhenefiti awo akakurumidza kubuda pachena mukuchera oiri negasi. PDC cutters inopa kuchera nekukurumidza uye kwakanyatsoita, kuderedza mitengo uye kuwedzera chibereko.
Sezvo tekinoroji yakavandudzwa, PDC cutters yakawedzera kufambira mberi, nemagadzirirwo matsva uye zvinhu zvichiwedzera kusimba uye kuita zvakasiyana. Nhasi, PDC cutters inoshandiswa mumhando dzakasiyana-siyana dzekuchera, kusanganisira geothermal drilling, migodhi, kuvaka, nezvimwe.
Kushandiswa kwePDC cutters kwakonzerawo kufambiswa mberi kwehunyanzvi hwekuchera, sekuchera kwakachinjika uye kudhirowa kwenzira. Aya matekiniki akaitwa kuti agoneke nekuwedzera kushanda uye kusimba kwePDC cutters, zvichibvumira kuchera kwakaringana uye kwakadzorwa.
Mukupedzisa, PDC cutters vane nhoroondo yakapfuma kubva mukugadzirwa kwemadhaimondi ekugadzira muma1950s. Kushanduka kwavo nekusimudzira kwakatungamira kubudiriro yakakura muhunyanzvi hwekuchera, kuvandudza kushanda zvakanaka, kuderedza mitengo, nekuwedzera huwandu hwekushandisa. Sezvo kudiwa kwekuchera nekukurumidza uye nekubudirira kuri kuramba kuchikura, zviri pachena kuti PDC cutters icharamba iri chinhu chakakosha muindasitiri yekuchera.
Nguva yekutumira: Mar-04-2023
