Ma tooth bits a API Mill IADC217 mainchesi 12 1/4 (311mm) obowolera zitsime

Tricone bit ndi chida chofunikira kwambiri chobowola mafuta, magwiridwe ake antchito adzakhudza mwachindunji ubwino wa kubowola, kugwira ntchito bwino kwa kubowola, komanso ndalama zobowola. Kubowola mafuta ndi geological drill ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri kapena chopangidwa ndi makona. Chopangidwa ndi makona chimakhala ndi mphamvu yogwedeza, kuphwanya ndi kudula mwala wopangidwa mozungulira, kotero chopangidwa ndi makonacho chimatha kusinthidwa kukhala zigawo zofewa, zapakati komanso zolimba. Makamaka mu chopangidwa ndi makonacho ndi nozzle yayitali pambuyo pa kutuluka kwa chopangidwa ndi makonacho, liwiro la kubowola kwa chopangidwa ndi makonacho lakula kwambiri, ndipo mbiri ya chitukuko cha chopangidwa ndi makonacho ndi kusintha kwakukulu. Chopangidwa ndi makonacho chingagawidwe m'magawo a mano (dzino) malinga ndi mtundu wa dzino, dzino (bit) (mano opangidwa ndi mano okhala ndi carbide mano) chopangidwa ndi makonacho; malinga ndi kuchuluka kwa mano kungagawidwe m'magulu ang'onoang'ono, awiri, atatu-cone ndi multi-cone bit. Kunyumba ndi kunja, chogwiritsidwa ntchito kwambiri ndi chopangidwa ndi makonacho.