Yadda za a zabi madaidaicin masu yankan PDC?

PDC drill Bits Design na yau azaman matrix yana da ɗan kamanni da na ko da ƴan shekarun da suka gabata.Ƙarfin ƙarfi da juriya mai tasiri sun karu da aƙalla 33%, kuma ƙarfin brazes mai yanke ya karu da ≈80%.A lokaci guda, geometries da fasaha na kayan tallafi sun inganta, wanda ya haifar da samfurori masu ƙarfi da matrix.
Abun Yankan
PDC Cutters an yi su ne daga ma'aunin carbide da grit lu'u-lu'u.Babban zafi na kusa da digiri 2800 da babban matsa lamba na kusan 1,000,000 psi ya haifar da ƙarami.Har ila yau, cobalt gami yana aiki a matsayin mai kara kuzari ga tsarin sintiri.Cobalt yana taimakawa wajen haɗa carbide da lu'u-lu'u.
Yawan Yankan
Mu yawanci muna amfani da ƴan yankan raƙuman raƙuman ruwa na PDC masu laushi yayin da kowane mai yankan ke cire zurfin yanke.Don ƙarin gyare-gyare, yana da mahimmanci a yi amfani da ƙarin masu yankewa don rama ƙananan zurfin yanke.

PDC Drill Bits - Girman Yankan
Don gyare-gyare masu laushi, yawanci muna zabar manyan sassa fiye da mafi wuyar tsari.Yawancin lokaci, daidaitaccen kewayon masu girma dabam daga 8 mm zuwa 19 mm akan kowane bit.

Gabaɗaya muna bayyana madaidaicin ƙirar ƙirar rake ta hanyar rake na baya da kusurwar rake na gefe.
●Rake mai yankan baya shine kusurwar da fuskar mai yankan ke nunawa zuwa ga samuwar kuma ana auna ta daga tsaye.Kusurwoyin rake na baya sun bambanta tsakanin, yawanci, 15° zuwa 45°.Ba su dawwama a cikin bitar, kuma ba daga bit zuwa bit ba.Girman kusurwar rake mai yanka don raƙuman raƙuman ruwa na PDC yana shafar ƙimar Kutse (ROP) da juriyar sawa.Yayin da kusurwar rake ke ƙaruwa, ROP yana raguwa, amma juriya don sawa yana ƙaruwa yayin da nauyin da aka yi amfani da shi ya bazu a kan yanki mafi girma.Masu yankan PDC tare da ƙananan rake na baya suna ɗaukar zurfin zurfin yanke kuma saboda haka sun fi ƙarfin hali, suna haifar da babban karfin juyi, kuma suna fuskantar saurin lalacewa da babban haɗarin tasiri.

●Rake na gefen yanka shine daidai gwargwado na daidaitawar mai yankan daga hagu zuwa dama.Kusurwoyin rake yawanci ƙanana ne.Kusurwar rake na gefen yana taimakawa tsaftace rami ta hanyar jagorantar yankan zuwa ga annulus.