Te whanaketanga o ngā taputapu tapahi PDC

I te ao keri, ko te whanaketanga o ngā taputapu tapahi PDC (polycrystalline diamond compact) kua tino whakarerekē i te ao hinu me te hau. I roto i ngā tau, kua rerekē te hoahoa me te mahi o ngā taputapu tapahi PDC, kua pai ake te mahi, ā, kua roa ake te ora.

I te tīmatanga, i hangaia ngā taputapu tapahi PDC hei whakarato i tētahi atu huarahi pakari ake, whai hua ake hoki ki ngā whakaurunga tungsten carbide tuku iho. I whakaurua tuatahitia mai i te tekau tau atu i 1970, ā, i tere te rongonui nā te kaha ki te tu atu i ngā pāmahana me ngā pēhanga teitei i roto i ngā mahi keri hohonu. Heoi, i whakawhāitihia ngā taputapu tapahi PDC o mua e tō rātou āhua pakarukaru, ā, he ngāwari ki te pakarukaru, ki te whatiwhati hoki.

I te whanaketanga o te hangarau, ka tīmata ngā kaihanga ki te whakamātau i ngā rauemi me ngā hoahoa hou hei whakapai ake i te mahi a ngā taputapu tapahi PDC. Ko tētahi o ngā whanaketanga nui ko te whakaurunga mai o ngā taputapu tapahi taimana polycrystalline (TSP) pumau-wera. He paparanga taimana pakari ake ēnei taputapu tapahi, ā, ka taea te tu atu i ngā pāmahana me ngā pēhanga teitei ake i ngā taputapu tapahi PDC tuku iho.

Ko tētahi atu putanga nui i roto i te hangarau tapahi PDC ko te whakaurunga mai o ngā tapahi ranu. I whakakotahihia e ēnei tapahi te pakari o te PDC me te pakari o te tungsten carbide hei hanga i tētahi taputapu tapahi ka taea te whakahaere i ngā mahi keri tino uaua.

I ngā tau tata nei, nā ngā whanaketanga o ngā tikanga hanga kua taea te hanga i ngā āhuahanga uaua i roto i ngā taputapu tapahi PDC. Nā tēnei kua hua ake te whanaketanga o ngā taputapu tapahi motuhake kua hangaia mō ngā tono keri motuhake, pērā i te keri ahunga me te keri pēhanga teitei/pāmahana teitei.

He nui te pānga o te whanaketanga o ngā taputapu tapahi PDC ki te umanga hinu me te hau. Nā te kaha ki te tu atu ki ngā āhuatanga tino kino, me te roa ake o te ora i ngā taputapu tapahi tuku iho, kua piki ake te pai o te keri me te whakaiti i te wā kore mahi a ngā taputapu tapahi PDC. I te haere tonu o te whanaketanga o te hangarau keri, tera pea ka kite tātou i ētahi atu whanaketanga i roto i te hoahoa me te mahi a te taputapu tapahi PDC.

Hei whakamutunga, kua roa te ahunga whakamua o ngā taputapu tapahi PDC mai i tōna whakaurunga mai i te tekau tau atu i 1970. Mai i ōna rā tuatahi hei whakakapinga pakari mō ngā whakaurunga tungsten carbide, tae noa ki te whanaketanga o ngā taputapu tapahi motuhake i hangaia mō ngā tono keri motuhake, he mea whakamiharo te whanaketanga o ngā taputapu tapahi PDC. I te whanaketanga tonu o te umanga hinu me te hau, kāore e kore ka whai wāhi nui ngā taputapu tapahi PDC ki te whakatairanga i te whai hua me te hua o ngā mahi keri.