Ngā kāwai e rima Te taputapu matua mō te mīhini

E rima ngā wāhanga o te taputapu e ai ki te mata o te wahi mahi. Te tukatuka i ngā momo mata o waho o ngā taputapu, tae atu ki ngā taputapu hurihuri, te mīhini whakarite, te mīhini mira, te mata o waho o te mea tapahi me te mea tapahi; ngā taputapu tukatuka kōhao, tae atu ki te wiri, te mīhini whakakī, te maripi poka, te mīhini whakakī me te mea tapahi mata o roto; ngā taputapu, tae atu ki ngā taputapu tap, te mate, te whakatuwhera me te kati aunoa i te tapahi miro, ngā taputapu hurihuri miro me te mīhini tapahi miro, me ētahi atu; ngā taputapu tukatuka taputapu, tae atu ki te oumu, te mīhini tapahi āhua, te mīhini tapahi heu, te taputapu tapahi taputapu piko, te taputapu tapahi, ngā mata kani niho, ngā kani roopu, ngā kani kopere, ngā mīhini tapahi me ngā mata kani, me ētahi atu. Hei tāpiri, he huinga taputapu anō hoki.

E ai ki te nekehanga tapahi me te āhua o te mata e rite ana, ka taea te wehewehe i te taputapu kia toru ngā wāhanga. Ngā taputapu whānui pērā i ngā taputapu hurihuri, ngā mīhini whakarite, ngā mīhini mira (haunga ngā taputapu hurihuri hanga, ngā mīhini whakarite me ngā mīhini whakarite), ngā taputapu keri, ngā wiri, ngā mīhini riipene, ngā mīhini riipene me ngā kani; ngā taputapu hanga, he rite te rahi, he tata rānei ki te rahi o te wahi mahi, pērā i te maripi hanga, te mīhini whakarite, te mīhini tapahi hanga, te mīhini whakarara, te mīhini riipene kōne me te maha atu o ngā taputapu tukatuka miro; ngā wahi mahi niho, rite rānei pērā i te oumu, te āhua, te mīhini tapahi heu, te mīhini whakarite taputapu piko me te mīhini tapahi taputapu piko.

Ka wehea ngā rauemi taputapu ki ēnei wāhanga e whai ake nei: te maitai tere-rahi, te carbide sima, te cermet, te uku, te polycrystalline cubic boron nitride me te taimana polycrystalline.

Ko te nuinga o taku whakamahi i ngā uku, he roa ake te uku mō te tapahi i te taputapu i te carbide, engari nā tōna pakarukaru, he tino puhoi te whanaketanga. Engari mai i te rautau whakamutunga i muri i te tekau tau atu i 1970, kua tere ake te whanaketanga. Ko ngā rauemi taputapu uku he raina matua e rua, arā, ko te pūnaha alumina me te silicon nitride. He iti te utu, he pakeke teitei, he pai te mahi pāmahana teitei mō ngā uku hei taputapu, ā, he pai te tirohanga.