pūtātai pdc kōhui hauora hangi maha
Nā ngā pūtē PDC (Polycrystalline Diamond Compact) te whakamana i tētahi whakarerekē hou i roto i te hanganga kōwhai, e whakapakiri ana i te whanonga taea me te paihere mōhio. E ai ki ēnei rautaki hanga matihiko, he torutoru rānei o ngā whenua kimia e hono nei ki te papa tungsten carbide i raro i ngā āhuatanga nui me te werawera. Kua hanga ngā pūtē PDC me ngā whatunga taea e whakatakoto ake ana i ngā wāhi matua, e kite ana i te mahi pai o te tahua i runga i te mahi kotahi o te whakaputu, e whakapai ana i te paihere o te hanga kōwhai i mua i ngā pūtē poraka tradisionāl. Ko te hanga matataupu e whakauru ana i ngā puipui taea tatau hei whakamana i te paihere hahau, e tiakina ana i te whakawhiti kai me te whakaire i te whatunga taea i te wā e mahi ana. Kei te pai ngā pūtē PDC i waenganui i ngā taiao hanga kōwhai, mai i ngā tahuhu riro ki ngā tahuhu iti-hard, ka mutu, kei te pai hoki i te whakatika i te whanonga i runga i ngā wā e hirari ana. Hei tūtohu hoki ngā pūtē i te hunga taea matataupu e whakamana ana i te whiuwhiu tae atu me te paihere ā-wāhi, e hīkoi ana i te mana o te rautaki i roto i ngā āhuatanga korenga i raro i te papa. Ki te kitea te whakahaere tino whakapae, ka puta haere i te rahinga whakaputu haere, ahakoa ko te utu iti rawa mo te ra e hanga kōwhai ana.