Zinthu zambiri za PDC zatumizidwa zisanachitike tchuthi

Ma PDC bits okhala ndi chitsulo, opangidwa ndi chitsulo champhamvu kwambiri, amapereka kulimba kwakukulu komanso kukana kugunda, amagwira ntchito bwino m'mapangidwe ophatikizika, malo ogwedezeka kwambiri, komanso akakumana ndi zingwe zolimba kapena miyala. Kapangidwe kake kachitsulo kolimba kamapirira kugwedezeka kwa pansi ndipo kamachepetsa chiopsezo cha kusweka kwa brittle poyerekeza ndi matrix bits a thupi.
Phindu lalikulu ndi kuthekera kokonza bwino kwambiri: zodulira zowonongeka zimatha kusinthidwa, ndipo masamba kapena nozzles zimatha kukonzedwanso, zomwe zimapangitsa kuti nthawi yogwirira ntchito ikhale yayitali komanso kuchepetsa ndalama zogwirira ntchito. Zimawononganso ndalama zochepa popanga, zomwe zimapangitsa kuti zikhale zosavuta kuzigwiritsa ntchito poyamba.
Kugwira ntchito bwino kwa zitsulo kumathandiza kuti mapangidwe a masamba osinthasintha, ma hydraulic okonzedwa bwino, komanso kuchotsa zidutswa bwino, zomwe zimapangitsa kuti zilowe m'malo mofewa mpaka pakati. Chifukwa cha kulimba kwa kapangidwe kake komanso kukana kutopa, zidutswazi zimaonetsetsa kuti kubowola kokhazikika komanso kuti zigwiritsidwe ntchito bwino. Zimagwiritsidwa ntchito kwambiri pobowola mafuta, migodi, ndi zitsime zamadzi chifukwa cha kusinthasintha kwawo, kulimba, komanso kugwiritsa ntchito bwino ndalama.