mati whakamahere PDC rorohiko
Te rākau whakanui PDC wing e whakamahia mo te tūranga whakanui he whakamua nui i ngā mahi whakanui, e hīkina nei ngā whakaawe ā-mata ki te whakapai i te noho me te wehewehe i ngā mahi whakanui. Ko te rākau whakawai kēnei e mau ana i ngā hiku kē, e tūhono ana ngā kutu PDC ki runga i te whakapae whatitiri, e whakamana ana i te whakanui i te whenua me te akiaki. Ko te whakapae whatitiri o te rākau e hanga ana he pūtake rangatira mō te wheako whakawai e taea ai te whakanui i te wehi, ā, e whakatatū ana i te haere tonu. E hanga ana ēnei rākau i ngā paiaka whai mana, e whakauru ana ngā kutu PDC (polycrystalline diamond compact) e whakamana ana i te wehi hei whakakaha i te wehenga me te wehenga whakanui. Ko te hanga hiku e whakawhanake ana i te wehenga akiaki e hanga ana i te huringa waiwhitinga ki waho i te rākau, e whakaiti ana i te whakapae akiaki me te whakamahi wehewehe. Ko te whakatakotoranga o te rākau kei te whai mana hei whakamahi i ngā momo whenua e rerekē ana, mai i ngā whenua māku ki ngā whenua kotahi-kotahi, me te whakaritea i tēnā ka whai mana mō ngā mahi whakanui e rerekē ana. Nā ngā mahi hanga matua e whakamana ana i te tūranga kutu me te whakapai wheako, e whai ake ana i te whakapai i te ratemai whakanui (ROP) me te whakatīmata i te oranga o te rākau. Ko te hanga rākau PDC wing e whakauru ana i ngā whiuwaka matua e whakamana ana i te whakamahi wai mō te whakamātau me te whakakī i te wehenga, e whakamana ana i te wehenga pai i ngā tikanga whakanui e hē ake ana.